What are the cheapest airlines flying from London to Seattle round-trip?

Icelandair, at £460, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include Finnair and Lufthansa. Icelandair is priced at 19% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from London to Seattle one-way?

£403 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on WestJet and Icelandair, with prices starting from £410 and £442, respectively.

What are the most popular routes from London to Seattle?

When deciding which route to take from London to Seattle consider London Heathrow - Seattle/Tacoma Intl, London City - Seattle/Tacoma Intl or London Gatwick - Seattle/Tacoma Intl as they are the most popular.

What are the cheapest flights from London to Seattle?

On average you can expect to pay £2,083 for a flight from London to Seattle. The cheapest flight overall is £479 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £375.

What are the most reliable airlines from London to Seattle?

Consider KLM (68%), Air France (68%) or Delta (68%) when booking your flight. These represent the most reliable airlines when flying from London to Seattle.

What are the most popular airlines that fly from London to Seattle?

Before booking your flight from London to Seattle check out the most popular airlines for this route: Air Canada, Air France or Finnair.

What is the cheapest day to fly round-trip from London to Seattle?

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 15% on the overall cost on flights from London to Seattle.

How far in advance should I book a flight from London to Seattle?

Travelers have found it’s best to book a flight 18 days in advance to save up to 42% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 18 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Seattle 1-2 weeks in advance for as low as £536, or £780 for flights within the next 24 hours.

What is the cheapest month to fly from London to Seattle?

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, January can be a great choice for travel to Seattle. Flights to Seattle from London in January are about £568 on average during January, but can be found for as low as £336.

What airport do you fly into for flights to Seattle from London?

Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London. Booking flights from London to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 8 daily inbound flights from London from 12 different airlines.

Can I find deals for flights from London to Seattle that include hotel bookings?

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

How can I find direct flights from London to Seattle?

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

Can I find deals for business class flights from London to Seattle?

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

£403+ Flights from London, England to Seattle, Washington

The best prices from London to Seattle/Tacoma Intl are usually found in January or February, booked 80 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Seattle

Round-trip from	£460
One-way from	£403
Popular in	August
Cheapest in	January

Icelandair
19/4-2/5
2 total stops
51h 40m total
London to Seattle

Search Deals

Aer Lingus
18/11
1 total stop
18h 25m total
London to Seattle

Search Deals

High demand for flights, 26% potential price rise

Search Deals

Best time to find cheap flights, 19% potential price drop

Search Deals

Find flight deals from London to Seattle

Cheapest flights from London to Seattle
Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2024.

Tue 26/1111:55LGW - SEA

1 stop13h 05mIcelandair

Tue 3/1214:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 27/10£465

Mon 25/1120:40LHR - SEA

1 stop28h 20mIcelandair

Mon 2/1214:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 28/10£476

Thu 21/1112:00LGW - SEA

1 stop16h 30mMultiple Airlines

Tue 25/219:51SEA - LGW

2 stops26h 09mMultiple Airlines

Deal found 28/10£481

Tue 12/1107:40LHR - SEA

1 stop13h 40mLufthansa

Sat 16/1116:35SEA - LHR

1 stop30h 50mLufthansa

Deal found 29/10£490

Tue 12/1110:05LHR - SEA

1 stop20h 24mFinnair

Sat 16/1113:45SEA - LHR

Nonstop9h 25mFinnair

Deal found 29/10£498

Mon 2/1213:00LHR - SEA

3 stops35h 23mMultiple Airlines

Mon 9/1205:15SEA - LHR

2 stops20h 55mMultiple Airlines

Deal found 29/10£503

Mon 16/1206:30STN - SEA

2 stops23h 30mMultiple Airlines

Sun 29/1220:00SEA - STN

1 stop19h 20mMultiple Airlines

Deal found 29/10£506

Wed 27/1106:20LHR - SEA

1 stop13h 45mVirgin Atlantic

Wed 4/1218:55SEA - LHR

Nonstop9h 45mVirgin Atlantic

Deal found 29/10£512

Mon 9/1206:30LHR - SEA

1 stop13h 40mUnited Airlines

Wed 25/1210:35SEA - LHR

1 stop15h 35mUnited Airlines

Deal found 29/10£521

Mon 2/1218:00LHR - SEA

2 stops28h 25mAir Canada

Mon 9/1205:45SEA - LHR

2 stops17h 25mAir Canada

Deal found 29/10£525

Mon 9/1206:30LHR - SEA

1 stop13h 22mKLM

Wed 25/1218:55SEA - LHR

Nonstop9h 45mKLM

Deal found 29/10£531

Mon 9/1210:00LHR - SEA

1 stop33h 52mDelta

Wed 25/1218:55SEA - LHR

Nonstop9h 45mDelta

Deal found 29/10£532

Best flights from London to Seattle
Discover carefully curated flight deals from London to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2024.

Sat 19/421:25LHR - SEA

1 stop31h 10mIcelandair

Fri 2/515:50SEA - LHR

1 stop20h 30mIcelandair

Deal found 28/10£460

Thu 14/1116:20LHR - SEA

2 stops27h 50mMultiple Airlines

Mon 18/1114:00SEA - LHR

2 stops23h 00mMultiple Airlines

Deal found 28/10£464

Wed 27/1115:00LHR - SEA

Nonstop9h 55mFinnair

Sun 1/1220:28SEA - LHR

1 stop35h 32mFinnair

Deal found 28/10£472

Wed 4/1206:30LHR - SEA

1 stop13h 40mLufthansa

Wed 12/315:05SEA - LHR

1 stop12h 05mLufthansa

Deal found 29/10£501

Mon 9/1211:10LHR - SEA

1 stop18h 30mAir Canada

Wed 25/1205:45SEA - LHR

1 stop20h 25mAir Canada

Deal found 28/10£517

Tue 26/1113:15LHR - SEA

Nonstop10h 00mVirgin Atlantic

Tue 3/1217:05SEA - LHR

Nonstop9h 25mVirgin Atlantic

Deal found 27/10£518

Tue 10/1207:40LHR - SEA

1 stop13h 40mUnited Airlines

Wed 15/105:45SEA - LHR

1 stop20h 25mUnited Airlines

Deal found 28/10£520

Mon 9/1211:45LHR - SEA

1 stop32h 07mDelta

Wed 25/1218:55SEA - LHR

Nonstop9h 45mDelta

Deal found 28/10£531

Mon 9/1206:30LHR - SEA

1 stop13h 22mKLM

Wed 25/1218:55SEA - LHR

Nonstop9h 45mKLM

Deal found 29/10£532

Wed 27/1115:00LHR - SEA

Nonstop9h 55mBritish Airways

Mon 24/218:50SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 28/10£534

Wed 27/1112:30LGW - SEA

2 stops20h 23mAmerican Airlines

Wed 4/1205:30SEA - LGW

2 stops19h 30mAmerican Airlines

Deal found 29/10£538

Wed 27/1115:00LHR - SEA

Nonstop9h 55mIberia

Wed 26/207:44SEA - LHR

1 stop14h 36mIberia

Deal found 28/10£547

Direct flights from London to Seattle
Explore direct flight options from London to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2024.

Wed 23/417:00LHR - SEA

Nonstop10h 35mVirgin Atlantic

Wed 7/515:50SEA - LHR

Nonstop9h 20mVirgin Atlantic

Deal found 29/10£511

Tue 19/1113:15LHR - SEA

Nonstop10h 00mKLM

Thu 5/1217:05SEA - LHR

Nonstop9h 25mKLM

Deal found 28/10£529

Tue 26/1109:25LHR - SEA

Nonstop9h 55mBritish Airways

Tue 25/213:35SEA - LHR

Nonstop9h 25mBritish Airways

Deal found 28/10£534

Thu 20/312:40LHR - SEA

Nonstop10h 00mAir France

Mon 24/318:05SEA - LHR

Nonstop9h 25mAir France

Deal found 28/10£534

Mon 25/1113:15LHR - SEA

Nonstop10h 00mDelta

Tue 25/217:05SEA - LHR

Nonstop9h 25mDelta

Deal found 28/10£537

Tue 10/1215:00LHR - SEA

Nonstop9h 55mFinnair

Wed 15/118:50SEA - LHR

Nonstop9h 25mFinnair

Deal found 28/10£545

Thu 16/115:00LHR - SEA

Nonstop9h 55mMultiple Airlines

Mon 20/118:50SEA - LHR

Nonstop9h 25mMultiple Airlines

Deal found 28/10£561

Tue 12/1115:00LHR - SEA

Nonstop9h 55mIberia

Wed 27/1118:50SEA - LHR

Nonstop9h 25mIberia

Deal found 27/10£575

Fri 13/1209:25LHR - SEA

Nonstop9h 55mAmerican Airlines

Fri 20/1213:45SEA - LHR

Nonstop9h 25mAmerican Airlines

Deal found 29/10£775

Last-minute flights from London to Seattle
Discover last-minute flight deals from London to Seattle. Data last updated 30 October 2024 and is based on user searches.

Sun 3/1113:05LHR - SEA

Nonstop10h 00mVirgin Atlantic

Wed 29/117:05SEA - LHR

Nonstop9h 25mVirgin Atlantic

Deal found 28/10£666

Mon 4/1111:15LHR - SEA

1 stop33h 31mFinnair

Fri 15/1113:45SEA - LHR

Nonstop9h 25mFinnair

Deal found 28/10£524

Mon 4/1108:50LHR - SEA

1 stop17h 25mAer Lingus

Mon 11/1120:00SEA - LHR

1 stop12h 50mAer Lingus

Deal found 28/10£606

Mon 4/1106:00LGW - SEA

1 stop19h 05mTurkish Airlines

Mon 11/1119:00SEA - LGW

1 stop18h 30mTurkish Airlines

Deal found 28/10£664

Mon 4/1109:05LHR - SEA

2 stops43h 15mAustrian Airlines

Mon 11/1107:10SEA - LHR

1 stop16h 45mAustrian Airlines

Deal found 28/10£680

Tue 5/1119:30LHR - SEA

2 stops34h 51mScandinavian Airlines

Tue 12/1111:50SEA - LHR

2 stops20h 10mScandinavian Airlines

Deal found 28/10£598

Wed 6/1120:40LHR - SEA

1 stop28h 20mIcelandair

Wed 4/1214:35SEA - LHR

1 stop20h 55mIcelandair

Deal found 28/10£518

Wed 6/1111:55LGW - SEA

1 stop13h 05mIcelandair

Thu 14/1114:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 29/10£567

Wed 6/1115:50LHR - SEA

Nonstop10h 25mKLM

Wed 4/1218:55SEA - LHR

Nonstop9h 45mKLM

Deal found 28/10£621

Wed 6/1115:50LHR - SEA

Nonstop10h 25mDelta

Mon 2/1217:05SEA - LHR

Nonstop9h 25mDelta

Deal found 28/10£624

Wed 6/1108:30LCY - SEA

2 stops33h 48mMultiple Airlines

Thu 14/1107:30SEA - LCY

2 stops19h 30mMultiple Airlines

Deal found 29/10£658

Thu 7/1115:15LHR - SEA

2 stops51h 03mMultiple Airlines

Wed 27/1115:15SEA - LHR

1 stop13h 35mMultiple Airlines

Deal found 28/10£552

One-way flights from London to Seattle
Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Data last updated 30 October 2024.

Mon 18/1107:50LHR - SEA

1 stop18h 25mAer Lingus

Deal found 28/10£403

Sat 16/1114:00LGW - SEA

2 stops26h 06mMultiple Airlines

Deal found 29/10£404

Mon 2/1214:50LHR - SEA

2 stops33h 33mMultiple Airlines

Deal found 29/10£405

Mon 4/1111:50SEN - SEA

3 stops39h 37mMultiple Airlines

Deal found 29/10£408

Tue 26/1118:50STN - SEA

3 stops30h 10mMultiple Airlines

Deal found 28/10£409

Sun 19/114:50LHR - SEA

2 stops27h 10mWestJet

Deal found 28/10£410

Mon 4/1115:00LTN - SEA

2 stops55h 21mMultiple Airlines

Deal found 29/10£413

Mon 11/1106:50LCY - SEA

1 stop19h 25mAer Lingus

Deal found 27/10£419

Mon 20/111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 28/10£442

Thu 28/1107:05LCY - SEA

1 stop15h 45mMultiple Airlines

Deal found 28/10£450

Sun 27/421:25LHR - SEA

1 stop28h 15mIcelandair

Deal found 28/10£480

Mon 24/213:15LHR - SEA

Nonstop10h 00mSingapore Airlines

Deal found 29/10£530

Find flights from London to Seattle within your budget

Fly from

Fly to

Budget

£460 - £547

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 19/4

1 stop31h 10m

Seattle/Tacoma Intl

Fri 2/5

1 stop20h 30m

£460

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 14/11

2 stops27h 50m

Seattle/Tacoma Intl

Mon 18/11

2 stops23h 00m

£464

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 27/11

Nonstop9h 55m

Seattle/Tacoma Intl

Sun 1/12

1 stop35h 32m

£472

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 4/12

1 stop13h 40m

Seattle/Tacoma Intl

Wed 12/3

1 stop12h 05m

£501

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/12

1 stop18h 30m

Seattle/Tacoma Intl

Wed 25/12

1 stop20h 25m

£517

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 26/11

Nonstop10h 00m

Seattle/Tacoma Intl

Tue 3/12

Nonstop9h 25m

£518

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 10/12

1 stop13h 40m

Seattle/Tacoma Intl

Wed 15/1

1 stop20h 25m

£520

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/12

1 stop32h 07m

Seattle/Tacoma Intl

Wed 25/12

Nonstop9h 45m

£531

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/12

1 stop13h 22m

Seattle/Tacoma Intl

Wed 25/12

Nonstop9h 45m

£532

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 27/11

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 24/2

Nonstop9h 25m

£534

London GatwickSeattle/Tacoma Intl

LGW - SEA

LGWSEA

London Gatwick

Wed 27/11

2 stops20h 23m

Seattle/Tacoma Intl

Wed 4/12

2 stops19h 30m

£538

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 27/11

Nonstop9h 55m

Seattle/Tacoma Intl

Wed 26/2

1 stop14h 36m

£547

Flights are sorted by cheapest first

Deals found on 28/10

Best time to book a flight from London to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London 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 London to Seattle

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

How far ahead should I book a flight from London to Seattle?

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Find deals

What is the cheapest month to book a flight from London to Seattle?

Currently, February is the cheapest month in which you can book a flight from London to Seattle (average of £617). Flying from London to Seattle in July is currently the most expensive (average of £839). 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 LON to SEA?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 11% on flights from London to Seattle by exploring options for tickets at midday.

What is the cheapest day to fly from London to Seattle?

Travellers seeking maximum savings on their London to Seattle flight should consider departing on Wednesday at midday when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Find deals

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from London to Seattle, such as KLM, SWISS and Lufthansa. 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.

Singapore Airlines

8.1

Very Good

1,339 reviews

Check prices

Reviews

1 / 10

Everything was poor and I had asked for some food and they told me to go to the serving place and get it . They weren’t very friendly and again I wanted upgrade to business and seats were empty and they said it was full . Will never fly with Singapore airlines

Singapore Airlines

8.1

Very Good

1,339 reviews

Singapore Airlines

8.1

Very Good

1,339 reviews

Check prices

Reviews

1 / 10

Delta

8.0

Very Good

8,845 reviews

Singapore Airlines

8.1

Very Good

1,339 reviews

Check prices

Reviews

1 / 10

KLM

7.8

Good

1,352 reviews

Singapore Airlines

8.1

Very Good

1,339 reviews

Check prices

Reviews

1 / 10

Finnair

7.7

Good

1,318 reviews

Singapore Airlines

8.1

Very Good

1,339 reviews

Check prices

Reviews

1 / 10

Austrian Airlines

7.7

Good

833 reviews

Singapore Airlines

8.1

Very Good

1,339 reviews

Check prices

Reviews

1 / 10

Related info for your journey

What airport do you fly into for flights to Seattle from London?
Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London. Booking flights from London to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 8 daily inbound flights from London from 12 different airlines.
What are the cheapest airlines flying from London to Seattle round-trip?
Icelandair, at £460, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include Finnair and Lufthansa. Icelandair is priced at 19% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from London to Seattle one-way?
£403 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on WestJet and Icelandair, with prices starting from £410 and £442, respectively.
What are the most popular routes from London to Seattle?
When deciding which route to take from London to Seattle consider London Heathrow - Seattle/Tacoma Intl, London City - Seattle/Tacoma Intl or London Gatwick - Seattle/Tacoma Intl as they are the most popular.
What are the most reliable airlines from London to Seattle?
Consider KLM (68%), Air France (68%) or Delta (68%) when booking your flight. These represent the most reliable airlines when flying from London to Seattle.
What are the cheapest flights from London to Seattle?
On average you can expect to pay £2,083 for a flight from London to Seattle. The cheapest flight overall is £479 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £375.
Can I find deals for flights from London to Seattle that include hotel bookings?
Yes. In addition to deals on London to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Seattle.
Can I find deals for business class flights from London to Seattle?
Yes. Cheapflights offers flight deals from London to Seattle 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 London to Seattle?
Currently, February is the cheapest month in which you can book a flight from London to Seattle (average of £617). Flying from London to Seattle in July is currently the most expensive (average of £839). 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

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from London to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest£248	Average£489	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
British Airways	Cheapest£320	Average£519	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£401	Average£628	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Icelandair	Cheapest£407	Average£547	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
United Airlines	Cheapest£409	Average£575	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£419	Average£558	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air Canada	Cheapest£423	Average£521	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Finnair	Cheapest£426	Average£581	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£439	Average£632	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Air France	Cheapest£461	Average£619	FlexibilityNo cancel fee	On-time77%	Search Air France flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Seattle?

Cheapflights makes it easy to find London to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from London to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Seattle with no change fees?

Certainly. Search results for flights to Seattle from London 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 London to Seattle become cheaper?

Yes, Cheapflights offers price alerts on London to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from London to Seattle from £403

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from London to Seattle/Tacoma Intl are usually found in January or February, booked 80 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Find flight deals from London to Seattle

Cheapest flights from London to SeattleExplore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2024.

Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2024.

Find flights from London to Seattle within your budget

Best time to book a flight from London to Seattle

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

Travel insights for flights from London to Seattle

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

How far ahead should I book a flight from London to Seattle?

Use this chart to determine the optimal time to book a return flight from London to Seattle. Price data was last updated on 25 October 2024.

What is the cheapest month to book a flight from London to Seattle?

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

Find hourly flight availability from London to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2024.

What is the cheapest day to fly from London to Seattle?

Use this chart to determine the cheapest time to fly return from London to Seattle. Price data was last updated on 27 October 2024.

Rainfall in Seattle by month

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

Temperature in Seattle by month

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

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from London to Seattle, such as KLM, SWISS and Lufthansa. 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 London to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from London?

What are the cheapest airlines flying from London to Seattle round-trip?

What are the cheapest airlines to fly from London to Seattle one-way?

What are the most popular routes from London to Seattle?

What are the most reliable airlines from London to Seattle?

What are the cheapest flights from London to Seattle?

Can I find deals for flights from London to Seattle that include hotel bookings?

How can I find direct flights from London to Seattle?

Can I find deals for business class flights from London to Seattle?

What is the cheapest month to book a flight from London to Seattle?

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Fly from London to Seattle on these airlines

Choose from the following airlines for your flight from London to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2024.

Top 10 airlines flying from London to Seattle

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Cheapest flights from London to Seattle
Explore the most affordable flight options available from London to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2024.