What are the cheapest airlines flying from Washington, D.C. to London round-trip?

PLAY, at £382, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Icelandair and Scandinavian Airlines. These flights start at 35% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Washington, D.C. to London one-way?

The cheapest airline one-way is PLAY, with whom users have recently found tickets for as low as £145. However, be on the lookout for offers from Icelandair and WorldTicket, as they are both options that can get you from Washington, D.C. to London for a low price.

What is the cheapest day to fly from Washington, D.C. to London?

Travellers seeking maximum savings on their Washington, D.C. to London flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from Washington, D.C. to London?

The most popular route from Washington, D.C. to London is Washington, D.C. Dulles Intl - London Heathrow. You may also consider Baltimore/Washington - London Heathrow or Washington, D.C. Dulles Intl - London Gatwick.

What are the cheapest flights from Washington, D.C. to London?

Looking at all options, your cheapest flight can be booked for £189. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £400 on average our data indicates £473 when flying from Washington, D.C. to London.

What are the most reliable airlines from Washington, D.C. to London?

Before booking your flight to London from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Air France (93%), KLM (91%), Delta( 91%).

What are the most popular airlines that fly from Washington, D.C. to London?

Before booking your flight from Washington, D.C. to London check out the most popular airlines for this route: Air France, British Airways or Icelandair.

What is the cheapest day to fly round-trip from Washington, D.C. to London?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 18% on the overall cost on flights from Washington, D.C. to London.

How far in advance should I book a flight from Washington, D.C. to London?

Find a great deal and save up to 18% by booking at least 39 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Washington, D.C. to London within the next two weeks, with the cheapest ticket starting at £629.

What is the cheapest month to fly from Washington, D.C. to London?

January is one of the best times of the year to fly to London from Washington, D.C.. Prices for January average £594 per person but you can even find prices for as low as £305. The most expensive prices can be found in the month of June. Opting for a January flight can save you 38% on your journey compared to booking in June

Can I find deals for flights from Washington, D.C. to London that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to London.

Can I find deals for business class flights from Washington, D.C. to London?

Yes. Cheapflights offers flight deals from Washington, D.C. to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£145+ Flights from Washington, D.C. to London

The best prices from Washington, D.C. to London are usually found in January or October, booked 73 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Washington, D.C. to London

Round-trip from	£382
One-way from	£145
Popular in	June
Cheapest in	January
Average price	£525
Good round-trip deal	£467 or less
Good one-way deal	£289 or less

PLAY
13/3-18/3
2 total stops
21h 50m total
Washington, D.C. to London

Search Deals

PLAY
25/3
1 total stop
10h 50m total
Washington, D.C. to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£87 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Price to beat on a round-trip flight from Washington, D.C. (WAS) to London (LON).

Search Deals

Price to beat on a one-way flight from Washington, D.C. (WAS) to London (LON).

Search Deals

Find flight deals from Washington, D.C. to London

Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Sat 6/918:50BWI - STN

1 stop10h 50mPLAY

Sat 13/911:40STN - BWI

1 stop11h 00mPLAY

Deal found 20/2£379

Wed 5/307:00BWI - LGW

2 stops18h 00mMultiple Airlines

Tue 18/308:00LGW - BWI

1 stop14h 00mMultiple Airlines

Deal found 21/2£383

Mon 7/420:30BWI - LHR

1 stop10h 25mIcelandair

Mon 14/421:25LHR - BWI

1 stop27h 00mIcelandair

Deal found 21/2£393

Mon 3/318:10BWI - STN

1 stop10h 50mMultiple Airlines

Wed 5/311:00STN - BWI

2 stops28h 07mMultiple Airlines

Deal found 19/2£395

Tue 11/319:10BWI - LHR

1 stop20h 20mMultiple Airlines

Tue 18/320:40LHR - BWI

1 stop25h 20mMultiple Airlines

Deal found 20/2£401

Wed 19/320:30BWI - LGW

1 stop10h 25mIcelandair

Wed 26/311:55LGW - BWI

1 stop11h 35mIcelandair

Deal found 20/2£402

Wed 5/317:10IAD - LHR

2 stops14h 45mScandinavian Airlines

Wed 19/318:40LHR - IAD

1 stop26h 00mScandinavian Airlines

Deal found 21/2£440

Wed 30/420:30IAD - LHR

1 stop18h 50mIcelandair

Wed 7/513:05LHR - IAD

1 stop11h 15mIcelandair

Deal found 21/2£441

Sun 6/411:45IAD - LGW

1 stop17h 15mMultiple Airlines

Thu 24/414:00LGW - IAD

1 stop31h 35mMultiple Airlines

Deal found 20/2£442

Thu 20/321:45IAD - LHR

1 stop33h 30mMultiple Airlines

Sun 23/306:00LHR - IAD

1 stop13h 35mMultiple Airlines

Deal found 20/2£442

Mon 10/320:40IAD - LGW

1 stop10h 15mIcelandair

Tue 18/311:55LGW - IAD

1 stop11h 30mIcelandair

Deal found 20/2£444

Mon 17/320:15IAD - LGW

1 stop15h 30mTAP AIR PORTUGAL

Mon 31/316:25LGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 20/2£446

Best flights from Washington, D.C. to London
Discover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Thu 13/319:10BWI - STN

1 stop10h 50mPLAY

Tue 18/311:00STN - BWI

1 stop11h 00mPLAY

Deal found 20/2£382

Wed 5/307:00BWI - LGW

2 stops18h 00mMultiple Airlines

Tue 18/308:00LGW - BWI

1 stop14h 00mMultiple Airlines

Deal found 21/2£383

Mon 7/420:30BWI - LHR

1 stop10h 25mIcelandair

Mon 14/421:25LHR - BWI

1 stop27h 00mIcelandair

Deal found 21/2£393

Mon 3/317:10IAD - LHR

1 stop11h 10mScandinavian Airlines

Tue 11/317:00LHR - IAD

1 stop27h 40mScandinavian Airlines

Deal found 21/2£443

Mon 17/320:15IAD - LGW

1 stop15h 30mTAP AIR PORTUGAL

Mon 31/316:25LGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 20/2£446

Mon 24/311:04DCA - LHR

1 stop14h 51mJetBlue

Thu 27/308:25LHR - DCA

1 stop12h 05mJetBlue

Deal found 20/2£457

Wed 23/422:40IAD - LHR

Nonstop7h 25mIberia

Wed 30/412:45LHR - IAD

Nonstop8h 05mIberia

Deal found 20/2£457

Mon 10/321:45IAD - LHR

1 stop9h 40mAer Lingus

Thu 13/308:50LHR - IAD

1 stop11h 50mAer Lingus

Deal found 20/2£467

Sun 6/414:10BWI - LHR

1 stop12h 05mVirgin Atlantic

Sun 13/420:10LHR - BWI

2 stops32h 11mVirgin Atlantic

Deal found 20/2£481

Wed 23/421:20BWI - LHR

Nonstop7h 15mBritish Airways

Tue 29/416:35LHR - BWI

Nonstop8h 00mBritish Airways

Deal found 19/2£482

Tue 29/418:05DCA - LHR

1 stop22h 35mFinnair

Tue 6/509:30LHR - DCA

2 stops18h 06mFinnair

Deal found 20/2£483

Tue 25/321:45IAD - LCY

1 stop11h 05mSWISS

Mon 7/409:25LCY - IAD

1 stop11h 50mSWISS

Deal found 20/2£483

Direct flights from Washington, D.C. to London
Explore direct flight options from Washington, D.C. to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 February 2025.

Wed 23/422:40IAD - LHR

Nonstop7h 25mIberia

Tue 29/412:45LHR - IAD

Nonstop8h 05mIberia

Deal found 20/2£456

Tue 22/421:20BWI - LHR

Nonstop7h 15mIberia

Wed 30/416:35LHR - BWI

Nonstop8h 00mIberia

Deal found 20/2£458

Wed 23/421:20BWI - LHR

Nonstop7h 15mBritish Airways

Tue 29/416:35LHR - BWI

Nonstop8h 00mBritish Airways

Deal found 19/2£482

Sun 9/319:25IAD - LHR

Nonstop7h 30mVirgin Atlantic

Tue 18/312:25LHR - IAD

Nonstop8h 40mVirgin Atlantic

Deal found 20/2£482

Sun 9/322:55IAD - LHR

Nonstop7h 10mFinnair

Tue 18/316:30LHR - IAD

Nonstop8h 15mFinnair

Deal found 20/2£491

Sat 8/318:25IAD - LHR

Nonstop7h 15mUnited Airlines

Sun 16/316:20LHR - IAD

Nonstop8h 20mUnited Airlines

Deal found 21/2£500

Tue 8/422:40IAD - LHR

Nonstop7h 25mBritish Airways

Tue 22/412:45LHR - IAD

Nonstop8h 05mBritish Airways

Deal found 20/2£503

Mon 14/418:10IAD - LHR

Nonstop7h 35mDelta

Fri 25/412:45LHR - IAD

Nonstop8h 30mDelta

Deal found 19/2£522

Sat 5/422:15IAD - LHR

Nonstop7h 25mAustrian Airlines

Sun 13/416:40LHR - IAD

Nonstop8h 10mAustrian Airlines

Deal found 20/2£528

Thu 20/321:30BWI - LHR

Nonstop7h 10mFinnair

Thu 27/315:25LHR - BWI

Nonstop8h 20mFinnair

Deal found 21/2£532

Thu 27/321:30BWI - LHR

Nonstop7h 10mAmerican Airlines

Tue 8/416:35LHR - BWI

Nonstop8h 00mAmerican Airlines

Deal found 19/2£566

Thu 27/321:30BWI - LHR

Nonstop7h 10mAer Lingus

Tue 1/416:35LHR - BWI

Nonstop8h 00mAer Lingus

Deal found 20/2£715

Last-minute flights from Washington, D.C. to London
Discover last-minute flight deals from Washington, D.C. to London. Data last updated 21 February 2025 and is based on user searches.

Sun 2/320:45IAD - LHR

1 stop9h 40mAer Lingus

Thu 6/308:50LHR - IAD

1 stop11h 50mAer Lingus

Deal found 20/2£467

Mon 3/318:10BWI - STN

1 stop10h 50mPLAY

Wed 12/311:00STN - BWI

1 stop11h 00mPLAY

Deal found 19/2£383

Mon 3/318:10BWI - STN

1 stop10h 50mMultiple Airlines

Wed 5/311:00STN - BWI

2 stops28h 07mMultiple Airlines

Deal found 19/2£395

Mon 3/319:30BWI - LGW

1 stop10h 25mIcelandair

Wed 12/311:55LGW - BWI

1 stop11h 35mIcelandair

Deal found 19/2£402

Mon 3/319:30BWI - LHR

1 stop10h 20mIcelandair

Mon 10/320:40LHR - BWI

1 stop26h 50mIcelandair

Deal found 20/2£406

Mon 3/318:10BWI - LGW

1 stop16h 20mMultiple Airlines

Tue 18/308:00LGW - BWI

1 stop14h 00mMultiple Airlines

Deal found 21/2£418

Mon 3/317:10IAD - LHR

1 stop11h 10mScandinavian Airlines

Tue 11/317:00LHR - IAD

1 stop27h 40mScandinavian Airlines

Deal found 21/2£443

Mon 3/319:40IAD - LHR

1 stop18h 50mIcelandair

Thu 20/312:15LHR - IAD

1 stop11h 10mIcelandair

Deal found 21/2£450

Mon 3/307:59DCA - LHR

1 stop16h 56mJetBlue

Tue 25/308:25LHR - DCA

1 stop12h 05mJetBlue

Deal found 21/2£464

Mon 3/319:15IAD - LGW

1 stop15h 30mTAP AIR PORTUGAL

Fri 7/310:40LGW - IAD

1 stop15h 20mTAP AIR PORTUGAL

Deal found 20/2£482

Mon 3/319:40IAD - LGW

1 stop10h 15mIcelandair

Thu 13/311:55LGW - IAD

1 stop11h 30mIcelandair

Deal found 19/2£485

Mon 3/319:15IAD - LHR

1 stop17h 15mTAP AIR PORTUGAL

Fri 7/312:25LHR - IAD

1 stop13h 35mTAP AIR PORTUGAL

Deal found 20/2£485

One-way flights from Washington, D.C. to London
Search for one-way flight options from Washington, D.C. to London. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Tue 25/319:10BWI - STN

1 stop10h 50mPLAY

Deal found 20/2£145

Wed 26/321:20BWI - LGW

1 stop32h 40mMultiple Airlines

Deal found 20/2£151

Tue 25/319:51BWI - STN

2 stops34h 09mMultiple Airlines

Deal found 20/2£169

Thu 24/420:30BWI - LHR

1 stop18h 50mIcelandair

Deal found 20/2£189

Thu 24/420:30BWI - LGW

1 stop13h 10mIcelandair

Deal found 20/2£189

Tue 4/318:10BWI - LHR

2 stops39h 15mMultiple Airlines

Deal found 20/2£196

Wed 23/420:30IAD - LHR

1 stop18h 50mIcelandair

Deal found 19/2£204

Thu 24/420:30IAD - LGW

1 stop13h 10mIcelandair

Deal found 20/2£213

Mon 24/319:10BWI - STN

1 stop10h 50mWorldTicket

Deal found 20/2£230

Fri 21/321:23IAD - LGW

2 stops32h 37mMultiple Airlines

Deal found 20/2£234

Tue 11/318:30IAD - LHR

1 stop24h 10mTAP AIR PORTUGAL

Deal found 20/2£235

Tue 11/318:30IAD - LGW

1 stop11h 20mTAP AIR PORTUGAL

Deal found 20/2£236

Find flights from Washington, D.C. to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Thu 13/3

19:10-10:00

1 stop10h 50m

London Stansted

Tue 18/3

11:00-18:00

1 stop11h 00m

£382

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Wed 5/3

07:00-06:00

2 stops18h 00m

London Gatwick

Tue 18/3

08:00-18:00

1 stop14h 00m

£383

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Mon 7/4

20:30-11:55

1 stop10h 25m

London Heathrow

Mon 14/4

21:25-19:25

1 stop27h 00m

£393

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Mon 3/3

18:10-10:00

1 stop10h 50m

London Stansted

Wed 5/3

11:00-10:07

2 stops28h 07m

£395

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Tue 11/3

19:10-19:30

1 stop20h 20m

London Heathrow

Tue 18/3

20:40-18:00

1 stop25h 20m

£401

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Wed 19/3

20:30-10:55

1 stop10h 25m

London Gatwick

Wed 26/3

11:55-19:30

1 stop11h 35m

£402

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 5/3

17:10-12:55

2 stops14h 45m

London Heathrow

Wed 19/3

18:40-16:40

1 stop26h 00m

£440

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 30/4

20:30-20:20

1 stop18h 50m

London Heathrow

Wed 7/5

13:05-19:20

1 stop11h 15m

£441

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 17/3

20:15-15:45

1 stop15h 30m

London Gatwick

Mon 31/3

16:25-15:20

1 stop27h 55m

£446

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 24/3

11:04-05:55

1 stop14h 51m

London Heathrow

Thu 27/3

08:25-16:30

1 stop12h 05m

£457

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 60 results

...

Best time to book a flight from Washington, D.C. to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Washington, D.C. to London

Get recent, data-driven insights about flights from Washington, D.C. to London including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Washington, D.C. to London?

The best time to book flights from Washington, D.C. to London is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to London?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to London (average of £112). Flying from Washington, D.C. to London in August is currently the most expensive (average of £163). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to LON?

It’s optimal to fly from Washington, D.C. to London in the evening. By choosing this option you can save up to 57% on the cost of your flight, compared to a flight at midday.

Weekly flight availability from Washington, D.C. to London

The most flights from WAS to LON are scheduled on a Thursday (23 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Read through reviews of airlines operating flights from Washington, D.C. to London, such as Delta, Porter Airlines and KLM. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,213 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Porter Airlines

7.9

Good

276 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,331 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Transat

7.8

Good

380 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. to London round-trip?
PLAY, at £382, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Icelandair and Scandinavian Airlines. These flights start at 35% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. to London one-way?
The cheapest airline one-way is PLAY, with whom users have recently found tickets for as low as £145. However, be on the lookout for offers from Icelandair and WorldTicket, as they are both options that can get you from Washington, D.C. to London for a low price.
What are the most popular routes from Washington, D.C. to London?
The most popular route from Washington, D.C. to London is Washington, D.C. Dulles Intl - London Heathrow. You may also consider Baltimore/Washington - London Heathrow or Washington, D.C. Dulles Intl - London Gatwick.
What are the most reliable airlines from Washington, D.C. to London?
Before booking your flight to London from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Air France (93%), KLM (91%), Delta( 91%).
What are the cheapest flights from Washington, D.C. to London?
Looking at all options, your cheapest flight can be booked for £189. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £400 on average our data indicates £473 when flying from Washington, D.C. to London.
Can I find deals for flights from Washington, D.C. to London that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to London.
Can I find deals for business class flights from Washington, D.C. to London?
Yes. Cheapflights offers flight deals from Washington, D.C. to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. to London?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to London (average of £112). Flying from Washington, D.C. to London in August is currently the most expensive (average of £163). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Deal

Hounslow

Milton Keynes

Croydon

Gatwick

Slough

Luton

Ilford

Hayes

Eastbourne

Wembley

Southend-on-Sea

Ipswich

Winchester

Maidstone

Crawley

Southall

Watford

Dartford

Stansted

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington, D.C. to London

Top 8 airlines flying from Washington, D.C. to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£380	Average£688	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£452	Average£642	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£457	Average£601	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Virgin Atlantic	Cheapest£462	Average£613	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air France	Cheapest£466	Average£586	FlexibilityNo cancel fee	On-time77%	Search Air France flights
United Airlines	Cheapest£469	Average£750	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£488	Average£630	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£565	Average£755	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

How does Cheapflights help users find flights from Washington, D.C. to London?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to London?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Washington, D.C. to London.

Can Cheapflights find flights from Washington, D.C. to London with no change fees?

Certainly. Search results for flights to London from Washington, D.C. shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Washington, D.C. to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Washington, D.C. today and book when prices fit your budget.

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Cheap flights from Washington, D.C. to London from £145

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/3. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Washington, D.C. to London are usually found in January or October, booked 73 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Washington, D.C. to London

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Find flight deals from Washington, D.C. to London

Cheapest flights from Washington, D.C. to LondonExplore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Find flights from Washington, D.C. to London within your budget

Best time to book a flight from Washington, D.C. to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. with our price prediction graph.

Travel insights for flights from Washington, D.C. to London

Get recent, data-driven insights about flights from Washington, D.C. to London including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Washington, D.C. to London?

Use this chart to determine the optimal time to book a return flight from Washington, D.C. to London. Price data was last updated on 14 February 2025.

What is the cheapest month to book a flight from Washington, D.C. to London?

What is the cheapest time of day to fly from WAS to LON?

Find hourly flight availability from Washington, D.C. to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

Weekly flight availability from Washington, D.C. to London

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

Read through reviews of airlines operating flights from Washington, D.C. to London, such as Delta, Porter Airlines and KLM. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Washington, D.C. to London round-trip?

What are the cheapest airlines to fly from Washington, D.C. to London one-way?

What are the most popular routes from Washington, D.C. to London?

What are the most reliable airlines from Washington, D.C. to London?

What are the cheapest flights from Washington, D.C. to London?

Can I find deals for flights from Washington, D.C. to London that include hotel bookings?

How can I find direct flights from Washington, D.C. to London?

Can I find deals for business class flights from Washington, D.C. to London?

What is the cheapest month to book a flight from Washington, D.C. to London?

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Alternative routes for Washington, D.C. to London

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Washington, D.C. to London

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Can Cheapflights find flights from Washington, D.C. to London with no change fees?

Can Cheapflights notify me if prices for flights from Washington, D.C. to London become cheaper?

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Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.