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Cheap flights from Southampton to Washington, D.C. from £455

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Southampton to Washington, D.C. departing on 14/7. 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 Southampton to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:20 - 19:25
SOU
-
BWI
15h 05m
2 stops
Multiple Airlines Logo
20:30 - 19:30
BWI
-
SOU
18h 00m
2 stops
£611Multiple Airlines
Tue, 5 May - Tue, 12 May
Aer Lingus Logo
09:20 - 15:45
SOU
-
IAD
11h 25m
1 stop
Aer Lingus Logo
20:55 - 08:05
IAD
-
SOU
30h 10m
1 stop
£648Aer Lingus
Mon, 4 May - Mon, 11 May
Multiple Airlines Logo
09:20 - 15:45
SOU
-
IAD
11h 25m
1 stop
Multiple Airlines Logo
22:25 - 08:05
IAD
-
SOU
28h 40m
2 stops
£663Multiple Airlines
Mon, 4 May - Mon, 11 May
British Airways Logo
17:20 - 19:10
SOU
-
IAD
30h 50m
1 stop
British Airways Logo
17:15 - 08:40
IAD
-
SOU
10h 25m
1 stop
£685British Airways
Fri, 17 Apr - Wed, 22 Apr
British Airways Logo
20:00 - 15:45
SOU
-
IAD
24h 45m
1 stop
British Airways Logo
22:15 - 20:55
IAD
-
SOU
17h 40m
2 stops
£695British Airways
Thu, 23 Apr - Mon, 27 Apr
British Airways Logo
17:20 - 15:45
SOU
-
IAD
27h 25m
1 stop
British Airways Logo
22:15 - 08:25
IAD
-
SOU
29h 10m
2 stops
£696British Airways
Thu, 23 Apr - Mon, 27 Apr
British Airways Logo
06:50 - 20:20
SOU
-
IAD
18h 30m
2 stops
British Airways Logo
22:25 - 19:25
IAD
-
SOU
16h 00m
2 stops
£702British Airways
Tue, 26 May - Tue, 2 Jun
British Airways Logo
08:55 - 19:10
SOU
-
IAD
15h 15m
2 stops
British Airways Logo
22:15 - 08:25
IAD
-
SOU
29h 10m
2 stops
£708British Airways
Thu, 23 Apr - Mon, 27 Apr
KLM Logo
09:05 - 20:33
SOU
-
DCA
16h 28m
2 stops
KLM Logo
12:59 - 08:35
DCA
-
SOU
14h 36m
2 stops
£797KLM
Mon, 4 May - Mon, 11 May
Delta Logo
09:05 - 22:41
SOU
-
DCA
18h 36m
2 stops
Delta Logo
11:00 - 08:35
DCA
-
SOU
16h 35m
2 stops
£857Delta
Fri, 17 Apr - Wed, 22 Apr

British Airways flights from Southampton to Washington, D.C.

Our best British Airways deals on Southampton to Washington, D.C. flight tickets
British Airways
17 Apr
SOU17:20Southampton Eastleigh
30h 50m
1 stop
IAD19:10Washington, D.C. Dulles Intl
22 Apr
IAD17:15Washington, D.C. Dulles Intl
10h 25m
1 stop
SOU08:40Southampton Eastleigh
£685
British Airways
23 Apr
SOU20:00Southampton Eastleigh
24h 45m
1 stop
IAD15:45Washington, D.C. Dulles Intl
27 Apr
IAD22:15Washington, D.C. Dulles Intl
17h 40m
2 stops
SOU20:55Southampton Eastleigh
£695
British Airways
23 Apr
SOU17:20Southampton Eastleigh
27h 25m
1 stop
IAD15:45Washington, D.C. Dulles Intl
27 Apr
IAD22:15Washington, D.C. Dulles Intl
29h 10m
2 stops
SOU08:25Southampton Eastleigh
£696

Delta flights from Southampton to Washington, D.C.

Our best Delta deals on Southampton to Washington, D.C. flight tickets
Delta
17 Apr
SOU09:05Southampton Eastleigh
11h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
22 Apr
IAD19:19Washington, D.C. Dulles Intl
16h 31m
2 stops
SOU16:50Southampton Eastleigh
£852
Delta
17 Apr
SOU09:05Southampton Eastleigh
18h 36m
2 stops
DCA22:41Washington, D.C. Reagan-National
22 Apr
DCA11:00Washington, D.C. Reagan-National
16h 35m
2 stops
SOU08:35Southampton Eastleigh
£857
Delta
20 May
SOU09:05Southampton Eastleigh
11h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
22 Jun
IAD10:05Washington, D.C. Dulles Intl
41h 30m
2 stops
SOU08:35Southampton Eastleigh
£942

momondo Fare Finder

 
Customise your flight search to find flights from Southampton to Washington, D.C. 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 23 March 2026.
Use the filters below to find and compare flights from Southampton to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Tue 5/5

09:20-19:25

2 stops15h 05m

Baltimore/Washington

Tue 12/5

20:30-19:30

2 stops18h 00m

£611

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 4/5

09:20-15:45

1 stop11h 25m

Washington, D.C. Dulles Intl

Mon 11/5

20:55-08:05

1 stop30h 10m

£648

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 4/5

09:20-15:45

1 stop11h 25m

Washington, D.C. Dulles Intl

Mon 11/5

22:25-08:05

2 stops28h 40m

£663

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 17/4

17:20-19:10

1 stop30h 50m

Washington, D.C. Dulles Intl

Wed 22/4

17:15-08:40

1 stop10h 25m

£685

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 23/4

20:00-15:45

1 stop24h 45m

Washington, D.C. Dulles Intl

Mon 27/4

22:15-20:55

2 stops17h 40m

£695

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 23/4

17:20-15:45

1 stop27h 25m

Washington, D.C. Dulles Intl

Mon 27/4

22:15-08:25

2 stops29h 10m

£696

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Tue 26/5

06:50-20:20

2 stops18h 30m

Washington, D.C. Dulles Intl

Tue 2/6

22:25-19:25

2 stops16h 00m

£702

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 23/4

08:55-19:10

2 stops15h 15m

Washington, D.C. Dulles Intl

Mon 27/4

22:15-08:25

2 stops29h 10m

£708
Fastest return journey

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Mon 4/5

09:05-20:33

2 stops16h 28m

Washington, D.C. Reagan-National

Mon 11/5

12:59-08:35

2 stops14h 36m

£797

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Fri 17/4

09:05-22:41

2 stops18h 36m

Washington, D.C. Reagan-National

Wed 22/4

11:00-08:35

2 stops16h 35m

£857

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Washington, D.C. from

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

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 day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Southampton is on a Thursday. momondo users have found tickets for Thursday departures for as low as £581. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Southampton because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £629.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

At midday is the cheapest time of day to fly from Southampton to Washington, D.C. when you can find flight prices for as low as £585. Flying to Washington, D.C. at midday is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the morning, with an average ticket price of £598. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Southampton to Washington, D.C. flights?

You could potentially save up to 9% on your flight if you consider stops on a Southampton to Washington, D.C. flight.

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

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

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

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

Fastest flight time

15h 05m

Direct flights

None
The fastest flight from Southampton to Washington, D.C. takes 15h 05m
There are no direct flights from Southampton to Washington, D.C.. There are no popular flight routes from Southampton to Washington, D.C..
Search flight deals

  • How far is Southampton Eastleigh to Washington, D.C. by plane?

    Washington, D.C. is 3622.6 mi away from Southampton Eastleigh. Typically, this will take 15h 05m by plane in normal conditions.

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

    Prices for flights from Southampton Eastleigh Airport to Washington, D.C. are refreshed on a daily basis.

  • How many operators does momondo search for flights from Southampton Eastleigh Airport to Washington, D.C.?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Southampton Eastleigh Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Southampton to Washington, D.C.

Compare and see reviews for airlines that fly from Southampton to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £455Free CancellationRating
7.2
1,482 reviews
Search Aer Lingus flights

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
College Park
Arlington
Fairfax
Linthicum Heights
Glen Burnie
Laurel
Lutherville Timonium
Ellicott City
Cambridge
Lexington Park
Westminster
Woodbridge
Bethesda
Alexandria
Silver Spring
Rockville
Owings Mills
Landover
National Harbor

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Southampton to Washington, D.C. . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Southampton to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Southampton.

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

If you are not ready to book a flight from Southampton to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport