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Cheap flights from Southampton to Washington, D.C. from £626

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 1/7. 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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Find the cheapest flights from Southampton to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
09:20 - 19:00
SOU
-
IAD
14h 40m
1 stop
Aer Lingus Logo
20:45 - 16:50
IAD
-
SOU
15h 05m
1 stop
£638Aer Lingus
Sat, 13 Jun - Sat, 20 Jun
Aer Lingus Logo
09:20 - 19:00
SOU
-
IAD
14h 40m
1 stop
Aer Lingus Logo
20:45 - 19:30
IAD
-
SOU
17h 45m
1 stop
£667Aer Lingus
Thu, 11 Jun - Thu, 18 Jun
Multiple Airlines Logo
09:20 - 12:01
SOU
-
DCA
31h 41m
3 stops
Multiple Airlines Logo
06:00 - 16:50
DCA
-
SOU
29h 50m
3 stops
£824Multiple Airlines
Sat, 13 Jun - Sat, 20 Jun
Multiple Airlines Logo
09:20 - 12:01
SOU
-
DCA
31h 41m
3 stops
Multiple Airlines Logo
18:55 - 19:30
DCA
-
SOU
19h 35m
2 stops
£831Multiple Airlines
Sat, 13 Jun - Sat, 20 Jun
Multiple Airlines Logo
09:20 - 12:01
SOU
-
DCA
31h 41m
3 stops
Multiple Airlines Logo
18:55 - 19:30
DCA
-
SOU
19h 35m
2 stops
£867Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
British Airways Logo
06:45 - 19:40
SOU
-
BWI
17h 55m
2 stops
British Airways Logo
21:30 - 17:45
BWI
-
SOU
15h 15m
2 stops
£868British Airways
Tue, 23 Jun - Tue, 30 Jun
Multiple Airlines Logo
09:20 - 22:28
SOU
-
DCA
18h 08m
2 stops
Multiple Airlines Logo
18:55 - 16:50
DCA
-
SOU
16h 55m
2 stops
£874Multiple Airlines
Sat, 13 Jun - Sat, 20 Jun
Aer Lingus Logo
09:20 - 15:45
SOU
-
IAD
11h 25m
1 stop
Aer Lingus Logo
22:25 - 08:40
IAD
-
SOU
29h 15m
2 stops
£937Aer Lingus
Sat, 13 Jun - Sat, 20 Jun
British Airways Logo
09:20 - 19:25
SOU
-
IAD
15h 05m
1 stop
British Airways Logo
17:35 - 14:25
IAD
-
SOU
15h 50m
2 stops
£1,164British Airways
Fri, 22 May - Fri, 29 May
British Airways Logo
06:45 - 19:40
SOU
-
BWI
17h 55m
2 stops
British Airways Logo
21:30 - 15:50
BWI
-
SOU
13h 20m
2 stops
£8,911British Airways
Wed, 1 Jul - Fri, 3 Jul

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

Our best British Airways deals on Southampton to Washington, D.C. flight tickets
British Airways
28 Jul
SOU09:15Southampton Eastleigh
11h 30m
1 stop
IAD15:45Washington, D.C. Dulles Intl
2 Aug
IAD17:15Washington, D.C. Dulles Intl
10h 25m
1 stop
SOU08:40Southampton Eastleigh
£864
British Airways
27 Jul
SOU09:20Southampton Eastleigh
11h 25m
1 stop
IAD15:45Washington, D.C. Dulles Intl
2 Aug
IAD17:15Washington, D.C. Dulles Intl
10h 25m
1 stop
SOU08:40Southampton Eastleigh
£866
British Airways
23 Jun
SOU06:45Southampton Eastleigh
17h 55m
2 stops
BWI19:40Baltimore/Washington
30 Jun
BWI21:30Baltimore/Washington
15h 15m
2 stops
SOU17:45Southampton Eastleigh
£868

Aer Lingus flights from Southampton to Washington, D.C.

Our best Aer Lingus deals on Southampton to Washington, D.C. flight tickets
Aer Lingus
13 Jun
SOU09:20Southampton Eastleigh
14h 40m
1 stop
IAD19:00Washington, D.C. Dulles Intl
20 Jun
IAD20:45Washington, D.C. Dulles Intl
15h 05m
1 stop
SOU16:50Southampton Eastleigh
£638
Aer Lingus
11 Jun
SOU09:20Southampton Eastleigh
14h 40m
1 stop
IAD19:00Washington, D.C. Dulles Intl
18 Jun
IAD20:45Washington, D.C. Dulles Intl
17h 45m
1 stop
SOU19:30Southampton Eastleigh
£667
Aer Lingus
13 Jun
SOU09:20Southampton Eastleigh
11h 25m
1 stop
IAD15:45Washington, D.C. Dulles Intl
20 Jun
IAD22:25Washington, D.C. Dulles Intl
29h 15m
2 stops
SOU08:40Southampton Eastleigh
£937

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 1 May 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
Fastest return journey

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 13/6

09:20-19:00

1 stop14h 40m

Washington, D.C. Dulles Intl

Sat 20/6

20:45-16:50

1 stop15h 05m

£638

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 11/6

09:20-19:00

1 stop14h 40m

Washington, D.C. Dulles Intl

Thu 18/6

20:45-19:30

1 stop17h 45m

£667

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Sat 13/6

09:20-12:01

3 stops31h 41m

Washington, D.C. Reagan-National

Sat 20/6

06:00-16:50

3 stops29h 50m

£824

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Sat 13/6

09:20-12:01

3 stops31h 41m

Washington, D.C. Reagan-National

Sat 20/6

18:55-19:30

2 stops19h 35m

£831

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Thu 11/6

09:20-12:01

3 stops31h 41m

Washington, D.C. Reagan-National

Thu 18/6

18:55-19:30

2 stops19h 35m

£867

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Tue 23/6

06:45-19:40

2 stops17h 55m

Baltimore/Washington

Tue 30/6

21:30-17:45

2 stops15h 15m

£868

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Sat 13/6

09:20-22:28

2 stops18h 08m

Washington, D.C. Reagan-National

Sat 20/6

18:55-16:50

2 stops16h 55m

£874

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 13/6

09:20-15:45

1 stop11h 25m

Washington, D.C. Dulles Intl

Sat 20/6

22:25-08:40

2 stops29h 15m

£937

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 22/5

09:20-19:25

1 stop15h 05m

Washington, D.C. Dulles Intl

Fri 29/5

17:35-14:25

2 stops15h 50m

£1,164

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Wed 1/7

06:45-19:40

2 stops17h 55m

Baltimore/Washington

Fri 3/7

21:30-15:50

2 stops13h 20m

£8,911

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 Wednesday. momondo users have found tickets for Wednesday departures for as low as £568. 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 £612.

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 £561. 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 £585. 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

11h 15m

Direct flights

None
The fastest flight from Southampton to Washington, D.C. takes 11h 15m
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

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

  • 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 11h 15m 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 £448Free CancellationRating
7.3
1,536 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
Alexandria
Fairfax
Arlington
Gettysburg
Linthicum Heights
Glen Burnie
Laurel
Lutherville Timonium
Ellicott City
Cambridge
Westminster
Lexington Park
Woodbridge
Bethesda
Owings Mills
Silver Spring
Rockville
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

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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