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Cheap flights from Washington, D.C. to London from £457

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to London departing on 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
17:50 - 17:00IAD-SOU
18h 10m1 stop
Delta Logo
17:35 - 15:35SOU-IAD
27h 00m1 stop
£595Delta
Find Deal
Wed, 29 Apr - Sun, 3 May
Virgin Atlantic Logo
17:50 - 17:00IAD-SOU
18h 10m1 stop
Virgin Atlantic Logo
09:20 - 15:35SOU-IAD
11h 15m1 stop
£596Virgin Atlantic
Find Deal
Wed, 29 Apr - Sun, 3 May
Virgin Atlantic Logo
13:00 - 17:00IAD-SOU
23h 00m2 stops
Virgin Atlantic Logo
09:20 - 15:35SOU-IAD
11h 15m1 stop
£598Virgin Atlantic
Find Deal
Wed, 29 Apr - Sun, 3 May
Virgin Atlantic Logo
13:00 - 17:00IAD-SOU
23h 00m2 stops
Virgin Atlantic Logo
17:35 - 15:35SOU-IAD
27h 00m1 stop
£600Virgin Atlantic
Find Deal
Wed, 29 Apr - Sun, 3 May
KLM Logo
11:00 - 08:45DCA-SOU
16h 45m2 stops
KLM Logo
17:35 - 10:26SOU-DCA
21h 51m2 stops
£647KLM
Find Deal
Wed, 22 Apr - Sun, 26 Apr
Aer Lingus Logo
17:05 - 08:45IAD-SOU
10h 40m1 stop
Aer Lingus Logo
20:10 - 15:35SOU-IAD
24h 25m1 stop
£763Aer Lingus
Find Deal
Wed, 11 Feb - Sun, 15 Feb
Aer Lingus Logo
17:20 - 08:05IAD-SOU
9h 45m1 stop
Aer Lingus Logo
09:10 - 15:50SOU-IAD
11h 40m1 stop
£781Aer Lingus
Find Deal
Tue, 21 Apr - Thu, 30 Apr
Multiple Airlines Logo
10:40 - 07:30BWI-SOU
39h 50m3 stops
Multiple Airlines Logo
20:10 - 23:49SOU-BWI
32h 39m3 stops
£1,403Multiple Airlines
Find Deal
Sun, 21 Dec - Sun, 28 Dec
Multiple Airlines Logo
06:59 - 19:20DCA-SOU
31h 21m3 stops
Multiple Airlines Logo
20:10 - 21:56SOU-DCA
30h 46m3 stops
£1,668Multiple Airlines
Find Deal
Sun, 21 Dec - Sun, 28 Dec
KLM Logo
12:32 - 08:50DCA-SOU
15h 18m2 stops
KLM Logo
09:25 - 21:30SOU-DCA
17h 05m2 stops
£2,174KLM
Find Deal
Sat, 20 Dec - Sat, 27 Dec

Virgin Atlantic flights from Washington, D.C. to Southampton

Our best Virgin Atlantic deals on Washington, D.C. to Southampton flight tickets
Virgin Atlantic
29 Apr
IAD17:50Washington, D.C. Dulles Intl
18h 10m
1 stop
SOU17:00Southampton Eastleigh
3 May
SOU09:20Southampton Eastleigh
11h 15m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£596
Find similar
Virgin Atlantic
29 Apr
IAD13:00Washington, D.C. Dulles Intl
23h 00m
2 stops
SOU17:00Southampton Eastleigh
3 May
SOU09:20Southampton Eastleigh
11h 15m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£598
Find similar
Virgin Atlantic
29 Apr
IAD13:00Washington, D.C. Dulles Intl
23h 00m
2 stops
SOU17:00Southampton Eastleigh
3 May
SOU17:35Southampton Eastleigh
27h 00m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£600
Find similar

KLM flights from Washington, D.C. to Southampton

Our best KLM deals on Washington, D.C. to Southampton flight tickets
KLM
22 Apr
DCA11:00Washington, D.C. Reagan-National
16h 45m
2 stops
SOU08:45Southampton Eastleigh
26 Apr
SOU17:35Southampton Eastleigh
21h 51m
2 stops
DCA10:26Washington, D.C. Reagan-National
£647
Find similar
KLM
20 Dec
DCA12:32Washington, D.C. Reagan-National
15h 18m
2 stops
SOU08:50Southampton Eastleigh
27 Dec
SOU09:25Southampton Eastleigh
17h 05m
2 stops
DCA21:30Washington, D.C. Reagan-National
£2,174
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. to Southampton that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 7 November 2025.
Use the filters below to find and compare flights from Washington, D.C. to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 29/4

17:50-17:00

1 stop18h 10m

Southampton Eastleigh

Sun 3/5

17:35-15:35

1 stop27h 00m

£595

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 29/4

17:50-17:00

1 stop18h 10m

Southampton Eastleigh

Sun 3/5

09:20-15:35

1 stop11h 15m

£596

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 29/4

13:00-17:00

2 stops23h 00m

Southampton Eastleigh

Sun 3/5

09:20-15:35

1 stop11h 15m

£598

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 29/4

13:00-17:00

2 stops23h 00m

Southampton Eastleigh

Sun 3/5

17:35-15:35

1 stop27h 00m

£600

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Wed 22/4

11:00-08:45

2 stops16h 45m

Southampton Eastleigh

Sun 26/4

17:35-10:26

2 stops21h 51m

£647

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 11/2

17:05-08:45

1 stop10h 40m

Southampton Eastleigh

Sun 15/2

20:10-15:35

1 stop24h 25m

£763

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 21/4

17:20-08:05

1 stop9h 45m

Southampton Eastleigh

Thu 30/4

09:10-15:50

1 stop11h 40m

£781

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Sun 21/12

10:40-07:30

3 stops39h 50m

Southampton Eastleigh

Sun 28/12

20:10-23:49

3 stops32h 39m

£1,403

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sun 21/12

06:59-19:20

3 stops31h 21m

Southampton Eastleigh

Sun 28/12

20:10-21:56

3 stops30h 46m

£1,668

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sat 20/12

12:32-08:50

2 stops15h 18m

Southampton Eastleigh

Sat 27/12

09:25-21:30

2 stops17h 05m

£2,174

Flights are sorted by cheapest return flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. to Southampton

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Washington, D.C. to Southampton Eastleigh?

Aer Lingus is the most popular carrier operating from Washington, D.C. to Southampton Eastleigh

Which airlines fly to Southampton?

British Airways, Virgin Atlantic and Icelandair are the top three most popular airlines that fly to Southampton from Washington, D.C. according to our data. British Airways is the first choice among our users, with 47% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 9 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Southampton according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. to Southampton (WAS to SOU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Southampton

Direct flights

None
There are no direct flights from Washington, D.C. to Southampton. There are no popular flight routes from Washington, D.C. to Southampton.
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  • How far is Washington, D.C. to Southampton Eastleigh by plane?

    Washington, D.C. and Southampton Eastleigh are 3622.6 mi apart from one another. 9h 45m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Southampton Eastleigh Airport?

    Prices for flights from Washington, D.C. to Southampton Eastleigh Airport are updated daily.

  • How old do you have to be to fly from Washington, D.C. to Southampton Eastleigh Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The travel and health documents you'll need for your trip to Southampton Eastleigh Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southampton Eastleigh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Southampton?

It is quick and easy to find Washington, D.C. to Southampton flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southampton that suits you.

Can I find flights from Washington, D.C. to Southampton with flexible booking policies on momondo?

Yes. All flights to Southampton from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Southampton?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Southampton.

I’m not ready to book a flight from Washington, D.C. to Southampton right now. Can momondo alert me if prices change?

Price alerts on flights to Southampton from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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