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Cheap flights from Portsmouth to Washington, D.C. from £564

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
27 gen — 3 feb1
1 adult

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

Discover tips and strategies to find the most affordable flight options for your journey from Portsmouth (P0R) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 gennaio 2025.

Round-trip from

£564

Popular in

June

Cheapest in

September

Average price

£607
KLM
  • KLM
  • 4/3-11/3
  • 2 total stops
  • 37h 15m total
  • Portsmouth to Washington, D.C.
Highest demand for flights based on searches. 35% potential increase in price (£348 potential increase over avg. return price).
Cheapest flight prices on average. 8% potential price decrease (£53 potential savings vs. average return price).
Average for round-trip flights in January 2025

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

Cheapest flights from Portsmouth to Washington, D.C.
Explore the most affordable flight options available from Portsmouth to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 gennaio 2025.

mar 4/317:20SOU - IAD
1 stop27h 25mKLM
mar 11/318:35IAD - SOU
1 stop9h 50mKLM
Deal found 21/1£564
mar 4/309:00SOU - DCA
2 stops16h 00mKLM
mar 11/313:59DCA - SOU
2 stops14h 26mKLM
Deal found 21/1£574
mar 4/309:00SOU - BWI
2 stops18h 26mDelta
mar 11/312:28BWI - SOU
2 stops15h 57mDelta
Deal found 21/1£592
mar 4/317:20SOU - BWI
3 stops28h 40mMultiple Airlines
mar 11/306:00BWI - SOU
3 stops30h 50mMultiple Airlines
Deal found 21/1£734
ven 7/309:00SOU - IAD
2 stops17h 05mDelta
ven 14/312:15IAD - SOU
2 stops16h 35mDelta
Deal found 20/1£863
ven 7/320:10SOU - IAD
2 stops23h 50mMultiple Airlines
ven 14/318:50IAD - SOU
3 stops34h 15mMultiple Airlines
Deal found 20/1£992
ven 7/319:25SOU - IAD
3 stops28h 50mAer Lingus
ven 14/321:45IAD - SOU
3 stops31h 20mAer Lingus
Deal found 20/1£1,152

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

Customise your flight search to find flights from Portsmouth to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 gennaio 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

mar 4/3

17:20-15:45

1 stop27h 25m

Washington, D.C. Dulles Intl

mar 11/3

18:35-08:25

1 stop9h 50m

£564

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

mar 4/3

09:00-20:00

2 stops16h 00m

Washington, D.C. Reagan-National

mar 11/3

13:59-08:25

2 stops14h 26m

£574

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

mar 4/3

09:00-22:26

2 stops18h 26m

Baltimore/Washington

mar 11/3

12:28-08:25

2 stops15h 57m

£592

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

mar 4/3

17:20-17:00

3 stops28h 40m

Baltimore/Washington

mar 11/3

06:00-16:50

3 stops30h 50m

£734

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

ven 7/3

09:00-21:05

2 stops17h 05m

Washington, D.C. Dulles Intl

ven 14/3

12:15-08:50

2 stops16h 35m

£863

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

ven 7/3

20:10-15:00

2 stops23h 50m

Washington, D.C. Dulles Intl

ven 14/3

18:50-09:05

3 stops34h 15m

£992

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

ven 7/3

19:25-19:15

3 stops28h 50m

Washington, D.C. Dulles Intl

ven 14/3

21:45-09:05

3 stops31h 20m

£1,152

Flights are sorted by cheapest return flights first.

Deals found on 21/1

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Portsmouth 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 Portsmouth to Washington, D.C.

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

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

Currently, February is the cheapest month in which you can book a flight from Portsmouth to Washington, D.C. (average of £565). Flying from Portsmouth to Washington, D.C. in July is currently the most expensive (average of £946). 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 P0R to WAS?

Find hourly flight availability from Portsmouth to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 gennaio 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Washington, D.C. as you normally would.

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Washington, D.C.. Price data was last updated on 30 June 2024.

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

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

Explore weekly flight availability from Portsmouth to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 22 gennaio 2025.

The most flights from P0R to WAS are scheduled on a Monday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 22 gennaio 2025.
Read reviews from past customers who have flown Delta and KLM from Portsmouth to Washington, D.C.. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very Good
8,521 reviews
8.0
Very Good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.8
Good
1,341 reviews
8.0
Very Good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.1
Good
1,082 reviews
8.0
Very Good
8,521 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the most popular routes from Portsmouth to Washington, D.C.?

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

    Consider American Airlines (49%), Aer Lingus (49%) or Finnair (49%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Washington, D.C..

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

    On average you can expect to pay £1,184 for a flight from Portsmouth to Washington, D.C.. The cheapest flight overall is £422 while the most popular route, (Southampton Eastleigh - Baltimore/Washington) is currently priced at £592.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Washington, D.C. 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 Portsmouth to Washington, D.C.?

    Currently, February is the cheapest month in which you can book a flight from Portsmouth to Washington, D.C. (average of £565). Flying from Portsmouth to Washington, D.C. in July is currently the most expensive (average of £946). 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

Travelling to a place near Portsmouth?

Book flights to Portsmouth if you plan to visit one of these locations
Silver Spring
Arlington
Woodbridge
College Park
Laurel
Tysons

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Top 10 airlines flying from Portsmouth to Washington, D.C.

Discover the top 10 airlines that operate flights from Portsmouth to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 gennaio 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£256Average£462FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
DeltaCheapest£348Average£831FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£379Average£578FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£383Average£642FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£416Average£781FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
JetBlueCheapest£421Average£624FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Scandinavian AirlinesCheapest£429Average£641FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air CanadaCheapest£445Average£677FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£475Average£700FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£480Average£668FlexibilityNo cancel feeOn-time77%
Search Air France flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Portsmouth to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from Portsmouth to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to Washington, D.C. from Portsmouth 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 Portsmouth to Washington, D.C. become cheaper?

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

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