£360 Find Cheap Flights from Portsmouth to Washington, D.C.

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 Washington, D.C. departing on 15/11. 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
1 adult, Economy

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Cheap Flights from Portsmouth to Washington, D.C.

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portsmouth to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portsmouth to Washington, D.C.

Mon, 13 Oct - Mon, 20 Oct
Virgin Atlantic Logo
17:35 - 15:35SOU-IAD
27h 00m1 stop
Virgin Atlantic Logo
17:25 - 16:50IAD-SOU
18h 25m1 stop
£463Virgin Atlantic
Find Deal
Mon, 13 Oct - Mon, 20 Oct
Virgin Atlantic Logo
17:35 - 09:00SOU-IAD
44h 25m2 stops
Virgin Atlantic Logo
19:59 - 17:00IAD-SOU
40h 01m2 stops
£472Virgin Atlantic
Find Deal
Mon, 13 Oct - Mon, 20 Oct
KLM Logo
17:35 - 16:54SOU-BWI
28h 19m2 stops
KLM Logo
13:00 - 08:45BWI-SOU
14h 45m2 stops
£481KLM
Find Deal
Thu, 30 Oct - Thu, 6 Nov
KLM Logo
08:50 - 17:05SOU-IAD
12h 15m1 stop
KLM Logo
18:05 - 17:00IAD-SOU
17h 55m1 stop
£489KLM
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Virgin Atlantic Logo
08:50 - 17:05SOU-IAD
12h 15m1 stop
Virgin Atlantic Logo
12:09 - 08:05IAD-SOU
14h 56m2 stops
£490Virgin Atlantic
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Delta Logo
08:50 - 22:59SOU-DCA
18h 09m2 stops
Delta Logo
11:10 - 08:05DCA-SOU
15h 55m2 stops
£499Delta
Find Deal
Mon, 13 Oct - Mon, 20 Oct
KLM Logo
17:35 - 15:35SOU-IAD
27h 00m1 stop
KLM Logo
13:00 - 08:45IAD-SOU
14h 45m2 stops
£499KLM
Find Deal
Thu, 30 Oct - Thu, 6 Nov
KLM Logo
08:50 - 20:15SOU-IAD
15h 25m2 stops
KLM Logo
21:25 - 17:00IAD-SOU
14h 35m2 stops
£535KLM
Find Deal
Thu, 30 Oct - Thu, 6 Nov
 Logo
18:05 - 19:40SOU-BWI
29h 35m3 stops
 Logo
19:40 - 19:40BWI-SOU
19h 00m2 stops
Mon, 13 Oct - Mon, 20 Oct
 Logo
20:30 - 15:20SOU-IAD
47h 50m3 stops
 Logo
09:45 - 19:30IAD-SOU
28h 45m3 stops

Everything you should know

Cheapest return fare
£463
Virgin Atlantic
Mon 13/10Mon 20/10
SOU - IAD • 1 stop
Cheapest one-way flight
£360
Multi-carrier
Sat 15/11
SOU - BWI • 3 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
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Good to know - Cheap tickets from Portsmouth to Washington, D.C.

Low seasonFebruary
Cheapest flight£360
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (5% more expensive on average)
Flight from Southampton to Baltimore

When to book flights from Portsmouth to Washington, D.C.

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

FAQs for booking flights from Portsmouth to Washington, D.C.

  • How does KAYAK find such low prices on flights from Portsmouth to Washington, D.C.?

    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, D.C..

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

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

  • What is the Hacker Fare option on flights from Portsmouth to Washington, D.C.?

    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, D.C. 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, D.C.?

    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, D.C. from Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Portsmouth to Washington, D.C.

 
Need help choosing which airline to fly with from Portsmouth to Washington, D.C.? 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 1270 reviews
7.1Comfort
6.5Food
7.3Boarding
8.0Crew
6.9Entertainment
Airline reviews

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

6.0 GoodAnonymous, Sept 2025IND - DUB
Read more Aer Lingus reviews

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

The flight from Cincinnati to Philadelphia was satisfactory and uneventful.

All of my Aer Lingus flights were delayed. The seat I purchased with extra leg room was exactly the same as my previous seat that was free. I would appreciate my money back.

It was fine. Not worth the premium price. Overhead bins were so high I could barely reach and no crew offered to help me. Average food. Lounge in Dublin - 51st and green- absolutely appalling. Plagued with hordes of flies, dirty, meager food and beverages. Shameful.

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

Not JetBlue's fault but Aer Lingus never explained how to transfer to JetBlue.

Poor check-in experience in Manchester. Delayed boarding and check-in agent never explained how to transfer in NYC to JetBlue.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

The space between seats has reduced even further making it extremely uncomfortable. Couldn't even open the tray table properly or got compressed the moment the front guy reclined.

Everything you need to know for your flight from Portsmouth to Washington, D.C.

Cabin class types available on flights to Portsmouth

Cabin classes available on flights to Portsmouth. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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