£380 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 20/5. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
£511
Aer Lingus
Sat 25/4Sat 2/5
SOU - IAD • 1 stop
Cheapest one-way flight
£380
Multiple Airlines
Wed 20/5
SOU - IAD • 3 stops
Direct flights
Every day
You can fly direct with ANA, Aer Lingus, and others. Average duration is 0
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
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We hope you love your trip to Washington, D.C.!
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.

Sat, 25 Apr - Sat, 2 May
Aer Lingus Logo
09:20 - 15:45
SOU
-
IAD
11h 25m
1 stop
Aer Lingus Logo
20:40 - 19:30
IAD
-
SOU
17h 50m
1 stop
£511Aer Lingus
Sun, 26 Apr - Sun, 3 May
Aer Lingus Logo
09:20 - 19:25
SOU
-
IAD
15h 05m
1 stop
Aer Lingus Logo
17:15 - 08:40
IAD
-
SOU
10h 25m
1 stop
£568Aer Lingus
Wed, 29 Apr - Wed, 6 May
Multiple Airlines Logo
09:20 - 19:25
SOU
-
BWI
15h 05m
2 stops
Multiple Airlines Logo
20:30 - 16:50
BWI
-
SOU
15h 20m
2 stops
£621Multiple Airlines
Wed, 29 Apr - Wed, 6 May
Aer Lingus Logo
20:00 - 15:45
SOU
-
IAD
24h 45m
1 stop
Aer Lingus Logo
17:15 - 08:40
IAD
-
SOU
10h 25m
1 stop
£624Aer Lingus
Sat, 25 Apr - Sat, 2 May
Multiple Airlines Logo
06:50 - 19:10
SOU
-
IAD
17h 20m
2 stops
Multiple Airlines Logo
20:40 - 19:30
IAD
-
SOU
17h 50m
1 stop
£646Multiple Airlines
Wed, 29 Apr - Wed, 6 May
Multiple Airlines Logo
06:50 - 19:25
SOU
-
IAD
17h 35m
2 stops
Multiple Airlines Logo
17:15 - 08:40
IAD
-
SOU
10h 25m
1 stop
£652Multiple Airlines
Mon, 4 May - Tue, 12 May
British Airways Logo
19:55 - 15:50
SOU
-
IAD
24h 55m
2 stops
British Airways Logo
17:15 - 08:05
IAD
-
SOU
9h 50m
1 stop
£705British Airways
Wed, 6 May - Tue, 12 May
British Airways Logo
06:50 - 15:50
SOU
-
IAD
14h 00m
2 stops
British Airways Logo
17:15 - 08:05
IAD
-
SOU
9h 50m
1 stop
£706British Airways
Sun, 26 Apr - Sun, 3 May
Virgin Atlantic Logo
17:20 - 22:50
SOU
-
DCA
34h 30m
2 stops
Virgin Atlantic Logo
20:38 - 08:35
DCA
-
SOU
30h 57m
2 stops
£804Virgin Atlantic
Sun, 26 Apr - Sun, 3 May
Delta Logo
09:15 - 22:41
SOU
-
DCA
18h 26m
2 stops
Delta Logo
10:05 - 08:35
DCA
-
SOU
17h 30m
2 stops
£1,040Delta
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 £321
Business Class flights to Washington, D.C.from £209
Premium Economy Class flights to Washington, D.C.from £323
Economy class flights to Washington, D.C.from £45