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.. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

£431 CHEAP FLIGHTS from Portsmouth to Washington, D.C.

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

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Cheapest return fare

£508

British Airways

Wed 8/7Fri 24/7

SOU - IAD • 1 stop

Cheapest one-way flight

£431

British Airways

Mon 23/11

SOU - IAD • 1 stop

Direct flights

Every day

You can fly direct with ANA, Aer Lingus, and others. Average duration is 0

Direct flights

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to Washington, D.C.!

Flight Deals

Cheap Flights from Portsmouth to Washington, D.C.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

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

Wed, 8 Jul - Fri, 24 Jul

09:20 - 15:45

SOU

IAD

11h 25m

1 stop

17:15 - 16:50

IAD

SOU

18h 35m

1 stop

£508British Airways

Thu, 29 Oct - Thu, 5 Nov

09:20 - 16:35

SOU

IAD

11h 15m

1 stop

17:05 - 08:40

IAD

SOU

10h 35m

1 stop

£509British Airways

Thu, 29 Oct - Thu, 5 Nov

09:20 - 20:30

SOU

IAD

15h 10m

1 stop

17:05 - 08:40

IAD

SOU

10h 35m

1 stop

£510British Airways

Thu, 29 Oct - Thu, 5 Nov

08:40 - 22:55

SOU

BWI

18h 15m

2 stops

12:15 - 08:10

BWI

SOU

14h 55m

2 stops

£570KLM

Thu, 29 Oct - Thu, 5 Nov

08:40 - 22:55

SOU

BWI

18h 15m

2 stops

13:00 - 08:10

BWI

SOU

14h 10m

2 stops

£572KLM

Wed, 8 Jul - Fri, 24 Jul

09:15 - 23:18

SOU

BWI

19h 03m

2 stops

10:33 - 08:45

BWI

SOU

17h 12m

2 stops

£662Delta

Wed, 1 Jul - Tue, 7 Jul

09:05 - 23:21

SOU

DCA

19h 16m

2 stops

11:47 - 08:45

DCA

SOU

15h 58m

2 stops

£666Delta

Sun, 5 Jul - Sun, 12 Jul

17:30 - 16:59

SOU

DCA

28h 29m

2 stops

20:50 - 08:45

DCA

SOU

54h 55m

2 stops

£718Multiple Airlines

Mon, 28 Sep - Mon, 5 Oct

09:05 - 23:43

SOU

DCA

19h 38m

2 stops

12:26 - 08:35

DCA

SOU

15h 09m

2 stops

£758Virgin Atlantic

Wed, 1 Jul - Tue, 7 Jul

09:20 - 22:31

SOU

DCA

18h 11m

2 stops

09:40 - 19:30

DCA

SOU

28h 50m

3 stops

£958Multiple Airlines

Useful Info

Low season	February
High season	July

Best time to beat the crowds (11% less expensive on average)

Most popular time to fly (10% 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

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

Complete your trip

Direct flights

Flights to other cities

Origins

Other airports

Cabin class types available on flights to Portsmouth

First Class flights to Washington, D.C.from £313

Business Class flights to Washington, D.C.from £207

Premium Economy Class flights to Washington, D.C.from £319

Economy class flights to Washington, D.C.from £49

£431 Find Cheap Flights from Portsmouth to Washington, D.C. – Compare and Save

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

Everything you should know

Cheap Flights from Portsmouth to Washington, D.C.

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

Recent one-way flight deals from Portsmouth to Washington, D.C.

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

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

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

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

Cabin class types available on flights to Portsmouth

Complete your trip to Washington, D.C. with a hotel stay or car hire

Find direct flights for Washington, D.C.

Flights to other popular destinations

Flights from domestic origins to Portsmouth

Choose which airport to fly into in Portsmouth