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Cheap flights from Washington, D.C. to London from £267

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 7/6. 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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0 bags
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Find the cheapest flights from Washington, D.C. to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:00 - 19:30
DCA
-
SOU
32h 30m
3 stops
Multiple Airlines Logo
15:35 - 12:00
SOU
-
DCA
25h 25m
3 stops
£615Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Multiple Airlines Logo
06:00 - 19:30
DCA
-
SOU
32h 30m
3 stops
Multiple Airlines Logo
15:35 - 10:18
SOU
-
DCA
23h 43m
2 stops
£633Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Multiple Airlines Logo
06:00 - 19:30
DCA
-
SOU
32h 30m
3 stops
Multiple Airlines Logo
15:35 - 18:12
SOU
-
DCA
31h 37m
3 stops
£659Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Multiple Airlines Logo
12:45 - 19:30
DCA
-
SOU
25h 45m
3 stops
Multiple Airlines Logo
15:35 - 12:00
SOU
-
DCA
25h 25m
3 stops
£662Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Multiple Airlines Logo
08:18 - 19:30
IAD
-
SOU
30h 12m
3 stops
Multiple Airlines Logo
15:35 - 11:11
SOU
-
IAD
24h 36m
3 stops
£663Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Multiple Airlines Logo
12:45 - 19:30
DCA
-
SOU
25h 45m
3 stops
Multiple Airlines Logo
15:35 - 10:18
SOU
-
DCA
23h 43m
2 stops
£664Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Delta Logo
18:10 - 17:35
IAD
-
SOU
18h 25m
1 stop
Delta Logo
18:05 - 15:35
SOU
-
IAD
26h 30m
1 stop
£817Delta
Mon, 17 Aug - Mon, 24 Aug
Delta Logo
17:40 - 08:35
IAD
-
SOU
9h 55m
1 stop
Delta Logo
09:05 - 15:35
SOU
-
IAD
11h 30m
1 stop
£818Delta
Sun, 6 Sep - Tue, 15 Sep
Delta Logo
12:55 - 08:45
DCA
-
SOU
14h 50m
2 stops
Delta Logo
18:05 - 16:34
SOU
-
DCA
27h 29m
2 stops
£828Delta
Mon, 17 Aug - Mon, 24 Aug
Aer Lingus Logo
21:30 - 19:30
BWI
-
SOU
17h 00m
2 stops
Aer Lingus Logo
20:00 - 17:15
SOU
-
BWI
26h 15m
2 stops
£1,014Aer Lingus
Mon, 10 Aug - Tue, 25 Aug

KLM flights from Washington, D.C. to Southampton

Our best KLM deals on Washington, D.C. to Southampton flight tickets
KLM
24 Aug
IAD12:29Washington, D.C. Dulles Intl
15h 16m
2 stops
SOU08:45Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
27h 15m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£822
KLM
2 Aug
IAD11:05Washington, D.C. Dulles Intl
16h 40m
2 stops
SOU08:45Southampton Eastleigh
11 Aug
SOU18:05Southampton Eastleigh
26h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£858
KLM
10 Sept
IAD12:30Washington, D.C. Dulles Intl
15h 05m
2 stops
SOU08:35Southampton Eastleigh
17 Sept
SOU17:20Southampton Eastleigh
27h 15m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£859

Delta flights from Washington, D.C. to Southampton

Our best Delta deals on Washington, D.C. to Southampton flight tickets
Delta
17 Aug
IAD18:10Washington, D.C. Dulles Intl
18h 25m
1 stop
SOU17:35Southampton Eastleigh
24 Aug
SOU18:05Southampton Eastleigh
26h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£817
Delta
6 Sept
IAD17:40Washington, D.C. Dulles Intl
9h 55m
1 stop
SOU08:35Southampton Eastleigh
15 Sept
SOU09:05Southampton Eastleigh
11h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£818
Delta
17 Aug
IAD19:26Washington, D.C. Dulles Intl
17h 09m
2 stops
SOU17:35Southampton Eastleigh
24 Aug
SOU18:05Southampton Eastleigh
26h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£821

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 15 May 2026.
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

Cheapest return flight

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 1/6

06:00-19:30

3 stops32h 30m

Southampton Eastleigh

Wed 17/6

15:35-12:00

3 stops25h 25m

£615

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 1/6

06:00-19:30

3 stops32h 30m

Southampton Eastleigh

Wed 17/6

15:35-10:18

2 stops23h 43m

£633

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 1/6

06:00-19:30

3 stops32h 30m

Southampton Eastleigh

Wed 17/6

15:35-18:12

3 stops31h 37m

£659

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 1/6

12:45-19:30

3 stops25h 45m

Southampton Eastleigh

Wed 17/6

15:35-12:00

3 stops25h 25m

£662

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 1/6

08:18-19:30

3 stops30h 12m

Southampton Eastleigh

Wed 17/6

15:35-11:11

3 stops24h 36m

£663

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 1/6

12:45-19:30

3 stops25h 45m

Southampton Eastleigh

Wed 17/6

15:35-10:18

2 stops23h 43m

£664

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 17/8

18:10-17:35

1 stop18h 25m

Southampton Eastleigh

Mon 24/8

18:05-15:35

1 stop26h 30m

£817
Fastest return journey

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 6/9

17:40-08:35

1 stop9h 55m

Southampton Eastleigh

Tue 15/9

09:05-15:35

1 stop11h 30m

£818

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 17/8

12:55-08:45

2 stops14h 50m

Southampton Eastleigh

Mon 24/8

18:05-16:34

2 stops27h 29m

£828

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Mon 10/8

21:30-19:30

2 stops17h 00m

Southampton Eastleigh

Tue 25/8

20:00-17:15

2 stops26h 15m

£1,014

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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?

KLM, Delta, and Aer Lingus are the most popular carriers operating from Washington, D.C. to Southampton Eastleigh

Which airlines fly to Southampton?

British Airways, Virgin Atlantic and United Airlines 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 51% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 6 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

Fastest flight time

9h 25m

Direct flights

None
The fastest flight from Washington, D.C. to Southampton takes 9h 25m
There are no direct flights from Washington, D.C. to Southampton. There are no popular flight routes from Washington, D.C. to Southampton.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Southampton

  • 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 25m 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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