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Cheap flights from Southampton to Washington, D.C. from £436

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 22/8. 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 - 16:35
SOU
-
IAD
11h 15m
1 stop
Aer Lingus Logo
21:00 - 19:30
IAD
-
SOU
17h 30m
1 stop
£625Aer Lingus
Thu, 29 Oct - Thu, 5 Nov
Aer Lingus Logo
09:20 - 16:35
SOU
-
IAD
11h 15m
1 stop
Aer Lingus Logo
17:05 - 16:35
IAD
-
SOU
18h 30m
1 stop
£627Aer Lingus
Thu, 29 Oct - Thu, 5 Nov
Aer Lingus Logo
09:20 - 16:35
SOU
-
IAD
11h 15m
1 stop
Aer Lingus Logo
21:00 - 19:30
IAD
-
SOU
17h 30m
1 stop
£672Aer Lingus
Thu, 29 Oct - Thu, 5 Nov
Multiple Airlines Logo
09:20 - 10:19
SOU
-
DCA
29h 59m
3 stops
Multiple Airlines Logo
06:00 - 16:50
DCA
-
SOU
29h 50m
3 stops
£681Multiple Airlines
Tue, 9 Jun - Mon, 15 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
£698Multiple Airlines
Tue, 9 Jun - Mon, 15 Jun
Multiple Airlines Logo
09:20 - 19:58
SOU
-
DCA
15h 38m
2 stops
Multiple Airlines Logo
06:00 - 19:30
DCA
-
SOU
32h 30m
3 stops
£703Multiple Airlines
Tue, 9 Jun - Mon, 15 Jun
KLM Logo
08:40 - 09:16
SOU
-
BWI
28h 36m
2 stops
KLM Logo
13:00 - 08:10
BWI
-
SOU
14h 10m
2 stops
£820KLM
Thu, 29 Oct - Thu, 5 Nov
KLM Logo
08:40 - 22:55
SOU
-
BWI
18h 15m
2 stops
KLM Logo
13:00 - 08:10
BWI
-
SOU
14h 10m
2 stops
£825KLM
Thu, 29 Oct - Thu, 5 Nov
British Airways Logo
06:45 - 17:15
SOU
-
BWI
15h 30m
2 stops
British Airways Logo
19:25 - 14:45
BWI
-
SOU
14h 20m
2 stops
£856British Airways
Wed, 16 Sep - Wed, 30 Sep
British Airways Logo
06:50 - 17:15
SOU
-
BWI
15h 25m
2 stops
British Airways Logo
21:35 - 20:55
BWI
-
SOU
18h 20m
2 stops
£859British Airways
Wed, 2 Sep - Sun, 6 Sep

Delta flights from Southampton to Washington, D.C.

Our best Delta deals on Southampton to Washington, D.C. flight tickets
Delta
29 Oct
SOU08:50Southampton Eastleigh
18h 12m
2 stops
IAD23:02Washington, D.C. Dulles Intl
5 Nov
IAD12:30Washington, D.C. Dulles Intl
14h 35m
2 stops
SOU08:05Southampton Eastleigh
£824
Delta
29 Oct
SOU08:50Southampton Eastleigh
18h 12m
2 stops
IAD23:02Washington, D.C. Dulles Intl
5 Nov
IAD19:59Washington, D.C. Dulles Intl
16h 01m
2 stops
SOU17:00Southampton Eastleigh
£825

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

Our best Aer Lingus deals on Southampton to Washington, D.C. flight tickets
Aer Lingus
29 Oct
SOU09:20Southampton Eastleigh
11h 15m
1 stop
IAD16:35Washington, D.C. Dulles Intl
5 Nov
IAD21:00Washington, D.C. Dulles Intl
17h 30m
1 stop
SOU19:30Southampton Eastleigh
£625
Aer Lingus
29 Oct
SOU09:20Southampton Eastleigh
11h 15m
1 stop
IAD16:35Washington, D.C. Dulles Intl
5 Nov
IAD17:05Washington, D.C. Dulles Intl
18h 30m
1 stop
SOU16:35Southampton Eastleigh
£627
Aer Lingus
29 Oct
SOU09:20Southampton Eastleigh
15h 10m
1 stop
IAD20:30Washington, D.C. Dulles Intl
5 Nov
IAD21:00Washington, D.C. Dulles Intl
17h 30m
1 stop
SOU19:30Southampton Eastleigh
£670

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 13 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

Thu 29/10

09:20-16:35

1 stop11h 15m

Washington, D.C. Dulles Intl

Thu 5/11

21:00-19:30

1 stop17h 30m

£625

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 29/10

09:20-16:35

1 stop11h 15m

Washington, D.C. Dulles Intl

Thu 5/11

17:05-16:35

1 stop18h 30m

£627

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 29/10

09:20-16:35

1 stop11h 15m

Washington, D.C. Dulles Intl

Thu 5/11

21:00-19:30

1 stop17h 30m

£672

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Tue 9/6

09:20-10:19

3 stops29h 59m

Washington, D.C. Reagan-National

Mon 15/6

06:00-16:50

3 stops29h 50m

£681

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Tue 9/6

09:20-12:01

3 stops31h 41m

Washington, D.C. Reagan-National

Mon 15/6

06:00-16:50

3 stops29h 50m

£698

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Tue 9/6

09:20-19:58

2 stops15h 38m

Washington, D.C. Reagan-National

Mon 15/6

06:00-19:30

3 stops32h 30m

£703

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Thu 29/10

08:40-09:16

2 stops28h 36m

Baltimore/Washington

Thu 5/11

13:00-08:10

2 stops14h 10m

£820

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Thu 29/10

08:40-22:55

2 stops18h 15m

Baltimore/Washington

Thu 5/11

13:00-08:10

2 stops14h 10m

£825

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Wed 16/9

06:45-17:15

2 stops15h 30m

Baltimore/Washington

Wed 30/9

19:25-14:45

2 stops14h 20m

£856

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Wed 2/9

06:50-17:15

2 stops15h 25m

Baltimore/Washington

Sun 6/9

21:35-20:55

2 stops18h 20m

£859

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 £565. 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 £606.

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 £555. 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 £582. 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
1,556 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
Alexandria
College Park
Springfield
Fairfax
Arlington
Gettysburg
Linthicum Heights
Glen Burnie
Laurel
Ellicott City
Lutherville Timonium
Cambridge
Westminster
Lexington Park
Woodbridge
Bethesda
Owings Mills
Silver Spring
Rockville
Landover

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