£625 Find Cheap Flights from Portsmouth to Washington, D.C.

This is the cheapest return 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 9/6. 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, 0 bags

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Everything you should know

Cheapest return fare
£625
Aer Lingus
Tue 9/6Tue 16/6
SOU - IAD • 1 stop
Cheapest one-way flight
£627
British Airways
Wed 1/7
SOU - IAD • 1 stop
Direct flights
Every day
You can fly direct with ANA, Aer Lingus, and others. Average duration is 0
Direct flights
Direct flights
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+1
Direct flights
Direct flights
+1
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Flight Deals
Useful Info
Flight Deals

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.

Tue, 9 Jun - Tue, 16 Jun
Aer Lingus Logo
09:20 - 19:35
SOU
-
IAD
15h 15m
1 stop
Aer Lingus Logo
21:05 - 16:50
IAD
-
SOU
14h 45m
1 stop
£625Aer Lingus
Sat, 13 Jun - Sat, 20 Jun
Aer Lingus Logo
09:20 - 19:00
SOU
-
IAD
14h 40m
1 stop
Aer Lingus Logo
20:45 - 16:50
IAD
-
SOU
15h 05m
1 stop
£639Aer Lingus
Thu, 11 Jun - Thu, 18 Jun
Aer Lingus Logo
09:20 - 19:00
SOU
-
IAD
14h 40m
1 stop
Aer Lingus Logo
20:45 - 19:30
IAD
-
SOU
17h 45m
1 stop
£669Aer Lingus
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
09:20 - 19:35
SOU
-
IAD
15h 15m
1 stop
Multiple Airlines Logo
17:15 - 08:35
IAD
-
SOU
34h 20m
2 stops
£751Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
17:20 - 19:58
SOU
-
DCA
31h 38m
3 stops
Multiple Airlines Logo
16:20 - 16:50
DCA
-
SOU
19h 30m
3 stops
£788Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
20:00 - 20:59
SOU
-
DCA
29h 59m
2 stops
Multiple Airlines Logo
14:20 - 08:05
DCA
-
SOU
12h 45m
2 stops
£797Multiple Airlines
Wed, 24 Jun - Wed, 1 Jul
British Airways Logo
09:20 - 15:45
SOU
-
IAD
11h 25m
1 stop
British Airways Logo
17:15 - 08:40
IAD
-
SOU
10h 25m
1 stop
£822British Airways
Mon, 22 Jun - Wed, 1 Jul
British Airways Logo
09:20 - 15:45
SOU
-
IAD
11h 25m
1 stop
British Airways Logo
17:15 - 08:40
IAD
-
SOU
10h 25m
1 stop
£831British Airways
Tue, 23 Jun - Tue, 30 Jun
British Airways Logo
09:20 - 19:35
SOU
-
IAD
15h 15m
1 stop
British Airways Logo
22:25 - 21:05
IAD
-
SOU
17h 40m
2 stops
£841British Airways
Sat, 13 Jun - Sat, 20 Jun
Aer Lingus Logo
09:20 - 19:45
SOU
-
BWI
39h 25m
2 stops
Aer Lingus Logo
21:30 - 19:30
BWI
-
SOU
17h 00m
2 stops
£1,108Aer Lingus
Useful Info

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

Low seasonFebruary
Best time to beat the crowds (11% 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.

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.
First Class flights to Washington, D.C.from £310
Business Class flights to Washington, D.C.from £205
Premium Economy Class flights to Washington, D.C.from £316
Economy class flights to Washington, D.C.from £48