£535 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 11/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 26% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flight Deals 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.

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

KAYAK's recommended return flight deals from the most popular airlines that fly from Portsmouth to Washington, D.C..
Discover the best prices for you by selecting your travel dates on KAYAK.
Virgin Atlantic Logo
17:35 - 15:35SOU-IAD
27h 00m1 stop
Virgin Atlantic Logo
17:25 - 17:00IAD-SOU
18h 35m1 stop
£733Virgin Atlantic
Find Deal
Thu, 29 May - Mon, 2 Jun
Aer Lingus Logo
09:40 - 20:05SOU-IAD
15h 25m2 stops
Aer Lingus Logo
22:40 - 19:30IAD-SOU
15h 50m2 stops
£752Aer Lingus
Find Deal
Thu, 29 May - Mon, 2 Jun
Virgin Atlantic Logo
09:20 - 15:35SOU-IAD
11h 15m1 stop
Virgin Atlantic Logo
13:00 - 08:50IAD-SOU
14h 50m2 stops
£757Virgin Atlantic
Find Deal
Thu, 29 May - Mon, 2 Jun
Delta Logo
09:20 - 20:43SOU-BWI
16h 23m2 stops
Delta Logo
19:44 - 17:00BWI-SOU
16h 16m2 stops
£761Delta
Find Deal
Thu, 29 May - Mon, 2 Jun
KLM Logo
09:20 - 18:59SOU-DCA
14h 39m2 stops
KLM Logo
13:15 - 08:50DCA-SOU
14h 35m2 stops
£761KLM
Find Deal
Thu, 29 May - Mon, 2 Jun
Delta Logo
17:35 - 15:35SOU-IAD
27h 00m1 stop
Delta Logo
13:00 - 08:50IAD-SOU
14h 50m2 stops
£790Delta
Find Deal
Fri, 23 May - Mon, 26 May
Delta Logo
17:35 - 10:15SOU-DCA
21h 40m2 stops
Delta Logo
14:59 - 08:45DCA-SOU
12h 46m2 stops
£794Delta
Find Deal
Fri, 23 May - Sun, 25 May
 Logo
20:00 - 22:10SOU-IAD
31h 10m2 stops
 Logo
08:18 - 19:30IAD-SOU
30h 12m3 stops
Thu, 29 May - Mon, 2 Jun
 Logo
17:35 - 19:20SOU-IAD
30h 45m3 stops
 Logo
20:30 - 08:45IAD-SOU
31h 15m3 stops
Thu, 29 May - Mon, 2 Jun
KLM Logo
09:20 - 15:35SOU-IAD
11h 15m1 stop
KLM Logo
17:25 - 08:45IAD-SOU
10h 20m1 stop
£1,250KLM
Find Deal
Mon, 12 May - Fri, 16 May
Useful Info

Good to know - Cheap tickets from Portsmouth to Washington, D.C.

Low season

February

High season

July
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (11% more expensive on average)

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.

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.
7.0
Aer LingusOverall score based on 1076 reviews
7.9Crew
6.7Entertainment
7.2Boarding
7.0Comfort
6.4Food
Airline reviews

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

8.0 ExcellentAnonymous, Apr 2025DUB - JFK
Read more Aer Lingus reviews

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

Boarding seemed a bit chaotic and we had to walk outside across the tarmac. Passengers of all ages had to drag carry on luggage up the outside stairway into the aircraft. There was no WiFi. Very uncomfortable crammed seats. Glad in-air time was only an hour!

Booked through Kayak, couldnt take flight, Kayak punted to Orbiz, Orbiz punted to Aer Lingus, Aer Lingus said sorry about your luck, try Kayak/Orbiz. Terrible customer service collecting air fares and not even offering a voucher when customers cant take flight

There was no flight. I booked a flight from Toronto to Bordeaux with a stopover in Dublin. I arrived in Dublin and the flight number I had didn't exist and the flight going to Bordeaux I wasn't on. I had to book a new flight with a different airline for later in the day and pay out of pocket.

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

This flight was delayed and caused me to miss my connecting flight from New York to Boston. I had to rent a car and drive myself home to avoid waiting another 5 hours in the airport.

Flight was cancelled. There were no Aer Lingus reps to help. I had to rebook my flight and find a hotel. Still had nothing from the airline.

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.

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.