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Find cheap flights from Portsmouth to Washington Dulles Airport from £312

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portsmouth to Dulles Intl departing on 31/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 5/6
Wed 12/6

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Good to know - Cheap tickets from Portsmouth to Washington Dulles Airport

Low season

January

High season

July

Cheapest flight

£312
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (18% more expensive on average)
Flight from Southampton to Washington Dulles Airport

When to book flights from Portsmouth to Dulles Intl

Are your dates flexible? Find out the best times to travel from Portsmouth to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs for booking Portsmouth to Washington Dulles Airport flights

  • How does KAYAK find such low prices on flights from Portsmouth to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portsmouth to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portsmouth to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Portsmouth is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portsmouth to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington Dulles Airport with an airline and back to Portsmouth with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portsmouth to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly direct from Portsmouth to Washington Dulles Airport?

Find which airlines fly direct from Portsmouth to Dulles Intl, which days they fly and book direct flights.

Direct departures

Portsmouth to Washington, D.C. Dulles Intl

Monday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Tuesday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Wednesday

ANA, ASKY, Aer Lingus, +65 more

ANA, ASKY, +66 more

Thursday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Friday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Saturday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Sunday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

See more direct flights

Direct returns

Washington, D.C. Dulles Intl to Portsmouth

Monday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Tuesday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Wednesday

ANA, ASKY, Aer Lingus, +65 more

ANA, ASKY, +66 more

Thursday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Friday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Saturday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Sunday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

See more direct flights
See more direct flights

Top airline flying from Portsmouth to Dulles Intl

 
Need help choosing which airline to fly with from Portsmouth to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1338 reviews
7.3Boarding
7.1Comfort
7.0Entertainment
6.6Food
8.0Crew
Airline reviews

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

6.0 Goodroy, Apr 2024DUB - SFO
Read more about Aer Lingus reviews

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

There were a lot of empty rows. As a single passenger I should not have been seated with 2 others. The WiFi didn’t work. The Kosher meal was awful.

They should. Heck planes more often not when they are suppose to be leaving causing delays

Thankfully not a full flight so although my headphone jack wasn’t working 100% on my window seat, I was able to move to the aisle seat. Food was fine, nothing great but tasty enough. Crew were friendly and made enough rounds. Always have a decent experience with Aer Lingus

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Great hospitality and service! Seats are better cushioned then some

Great hospitality and service! Seats could always be cushioned better.

Customs is always a challenge. The customs officials were real humans, which was nice-not robots programmed on angry 😊. If you’re in a hurry to get through you’ll be stressed out. Allow yourselves plenty of time and it will be a stress free experience.

There seemed to be much more leg room than a typical flight. I haven’t been that comfortable on a plane in years.

Book cheap flights from Portsmouth to Washington, D.C.

Recent return flight deals

25/9Wed
2 stopsDelta
30h 18mSOU-IAD
29/9Sun
2 stopsDelta
33h 30mIAD-SOU
£653
25/9Wed
1 stopDelta
13h 05mSOU-IAD
29/9Sun
2 stopsDelta
33h 30mIAD-SOU
£658
25/9Wed
1 stopVirgin Atlantic
13h 05mSOU-IAD
29/9Sun
1 stopVirgin Atlantic
20h 45mIAD-SOU
£684
20/5Mon
2 stopsBritish Airways
24h 40mSOU-IAD
27/5Mon
2 stopsBritish Airways
15h 40mIAD-SOU
£782
21/6Fri
1 stopBritish Airways
14h 30mSOU-IAD
3/7Wed
2 stopsBritish Airways
15h 40mIAD-SOU
£1,082
19/5Sun
2 stopsBritish Airways
24h 40mSOU-IAD
26/5Sun
2 stopsBritish Airways
15h 35mIAD-SOU
£1,087
21/6Fri
1 stopBritish Airways
14h 30mSOU-IAD
3/7Wed
1 stopBritish Airways
11h 00mIAD-SOU
£1,110
24/6Mon
2 stopsBritish Airways
24h 45mSOU-IAD
2/9Mon
2 stopsBritish Airways
15h 00mIAD-SOU
£1,150
24/6Mon
2 stopsBritish Airways
24h 45mSOU-IAD
2/9Mon
1 stopBritish Airways
11h 00mIAD-SOU
£1,152
20/5Mon
1 stopBritish Airways
14h 30mSOU-IAD
27/5Mon
2 stopsBritish Airways
15h 40mIAD-SOU
£1,346

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Recent one-way flight deals

31/8Sat
3 stops
34h 15mSOU-IAD
£312
31/8Sat
2 stops
31h 30mSOU-IAD
£431
31/8Sat
1 stopAer Lingus
31h 55mSOU-IAD
£508
18/9Wed
1 stopDelta
13h 05mSOU-IAD
£1,199
18/9Wed
2 stopsBritish Airways
16h 50mSOU-IAD
£1,232
15/7Mon
1 stopDelta
12h 05mSOU-IAD
£1,561
13/8Tue
1 stopBritish Airways
14h 30mSOU-IAD
£1,577
15/7Mon
2 stopsBritish Airways
16h 50mSOU-IAD
£1,593
29/5Wed
1 stopBritish Airways
14h 25mSOU-IAD
£2,098
21/6Fri
1 stopBritish Airways
11h 00mSOU-IAD
£2,102

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Last minute flights from Portsmouth to Dulles Intl

Last minute flight, train and bus deals

8/5Wed
multi-stopBritish Airways
10h 55mSOU-IAD
27/5Mon
multi-stopBritish Airways
15h 40mIAD-SOU
£1,136
11/5Sat
multi-stopBritish Airways
11h 00mSOU-IAD
27/5Mon
multi-stopBritish Airways
15h 40mIAD-SOU
£1,166
9/5Thu
multi-stopBritish Airways
16h 50mSOU-IAD
28/5Tue
multi-stopBritish Airways
12h 50mIAD-SOU
£1,182
11/5Sat
multi-stopBritish Airways
11h 00mSOU-IAD
2/6Sun
multi-stopBritish Airways
15h 35mIAD-SOU
£1,196
9/5Thu
multi-stopBritish Airways
16h 50mSOU-IAD
2/6Sun
multi-stopBritish Airways
15h 35mIAD-SOU
£1,212
8/5Wed
multi-stopBritish Airways
10h 55mSOU-IAD
1/6Sat
multi-stopBritish Airways
15h 40mIAD-SOU
£1,374
11/5Sat
multi-stopBritish Airways
11h 00mSOU-IAD
1/6Sat
multi-stopBritish Airways
15h 40mIAD-SOU
£1,403
9/5Thu
multi-stopBritish Airways
11h 00mSOU-IAD
1/6Sat
multi-stopBritish Airways
15h 40mIAD-SOU
£1,767
8/5Wed
multi-stopBritish Airways
14h 25mSOU-IAD
30/5Thu
multi-stopBritish Airways
11h 00mIAD-SOU
£2,074
8/5Wed
multi-stopBritish Airways
10h 55mSOU-IAD
31/5Fri
multi-stopBritish Airways
14h 25mIAD-SOU
£2,078

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Flights to Washington Dulles Airport

Destination:

Washington Dulles Airport (IAD)United States

Cabin classes:

£351
£531
£543
£69