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Cheap flights from Southampton to Washington, D.C. from £499

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 1/9. 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

British Airways Logo
08:40 - 19:55SOU-IAD
16h 15m2 stops
British Airways Logo
18:20 - 15:30IAD-SOU
16h 10m2 stops
£994British Airways
Find Deal
Wed, 17 Dec - Mon, 5 Jan
British Airways Logo
09:10 - 19:30SOU-IAD
15h 20m1 stop
British Airways Logo
21:00 - 19:30IAD-SOU
17h 30m1 stop
£998British Airways
Find Deal
Wed, 13 Aug - Wed, 20 Aug
British Airways Logo
09:30 - 19:30SOU-IAD
15h 00m1 stop
British Airways Logo
18:20 - 15:30IAD-SOU
16h 10m2 stops
£1,010British Airways
Find Deal
Wed, 17 Dec - Mon, 5 Jan
British Airways Logo
09:30 - 19:30SOU-IAD
15h 00m1 stop
British Airways Logo
17:05 - 08:45IAD-SOU
10h 40m1 stop
£1,056British Airways
Find Deal
Wed, 17 Dec - Mon, 5 Jan
British Airways Logo
08:40 - 17:30SOU-IAD
13h 50m2 stops
British Airways Logo
17:20 - 08:40IAD-SOU
10h 20m1 stop
£1,311British Airways
Find Deal
Wed, 13 Aug - Wed, 20 Aug

British Airways flights from Southampton to Washington, D.C. Dulles Intl Airport

Our best British Airways deals on Southampton to Washington, D.C. Dulles Intl Airport flight tickets
British Airways
17 Dec
SOU08:40Southampton Eastleigh
16h 15m
2 stops
IAD19:55Washington, D.C. Dulles Intl
5 Jan
IAD18:20Washington, D.C. Dulles Intl
16h 10m
2 stops
SOU15:30Southampton Eastleigh
£994
Find similar
British Airways
13 Aug
SOU09:10Southampton Eastleigh
15h 20m
1 stop
IAD19:30Washington, D.C. Dulles Intl
20 Aug
IAD21:00Washington, D.C. Dulles Intl
17h 30m
1 stop
SOU19:30Southampton Eastleigh
£998
Find similar
British Airways
17 Dec
SOU09:30Southampton Eastleigh
15h 00m
1 stop
IAD19:30Washington, D.C. Dulles Intl
5 Jan
IAD18:20Washington, D.C. Dulles Intl
16h 10m
2 stops
SOU15:30Southampton Eastleigh
£1,010
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Southampton to Washington, D.C. Dulles Intl Airport 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 August 2025.
Use the filters below to find and compare flights from Southampton to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 17/12

08:40-19:55

2 stops16h 15m

Washington, D.C. Dulles Intl

Mon 5/1

18:20-15:30

2 stops16h 10m

£994

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 13/8

09:10-19:30

1 stop15h 20m

Washington, D.C. Dulles Intl

Wed 20/8

21:00-19:30

1 stop17h 30m

£998

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 17/12

09:30-19:30

1 stop15h 00m

Washington, D.C. Dulles Intl

Mon 5/1

18:20-15:30

2 stops16h 10m

£1,010

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 17/12

09:30-19:30

1 stop15h 00m

Washington, D.C. Dulles Intl

Mon 5/1

17:05-08:45

1 stop10h 40m

£1,056

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 13/8

08:40-17:30

2 stops13h 50m

Washington, D.C. Dulles Intl

Wed 20/8

17:20-08:40

1 stop10h 20m

£1,311

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 1/9

09:40-15:50

1 stop11h 10m

£499

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 13/8

09:10-15:50

1 stop11h 40m

£2,145

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 11/8

09:40-18:55

1 stop14h 15m

£2,150

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 3/9

09:10-15:50

1 stop11h 40m

£2,160

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Tue 5/8

19:55-15:55

2 stops25h 00m

£2,161

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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. Dulles Intl Airport

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. Dulles Intl Airport?

According to our data, Wednesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Southampton. The lowest ticket price found for a Wednesday departure recently was £619. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. 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 £695.

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

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is in the evening when flights can be purchased for as low as £535. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the afternoon when prices are around £649.

When to book flights from Southampton to Washington, D.C. Dulles Intl Airport

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

Cheap Southampton to Washington, D.C. Dulles Intl Airport (SOU to IAD) flight deals and tips

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

Best price found

£499

Fastest flight time

11h 10m

Direct flights

None
The best one-way flight to Washington, D.C. Dulles Intl Airport from Southampton in the past 72 hours is £499. The best return flight deal from Southampton to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £994.
The fastest flight from Southampton to Washington, D.C. Dulles Intl Airport takes 11h 10m
There are no direct flights from Southampton to Washington, D.C. Dulles Intl Airport. Popular non-direct route for this connection is Southampton Eastleigh Airport - Washington, D.C. Dulles Intl Airport.
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  • How far is Southampton Eastleigh to Washington, D.C. Dulles Intl by plane?

    The distance between Southampton Eastleigh and Washington, D.C. Dulles Intl is about 3637.8 mi. By plane, this route typically takes 13h 50m.

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

    Prices for flights from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport refresh daily.

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

    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. Dulles Intl Airport.

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

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl 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 Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Winchester
Laurel
Essex
Alexandria
Fairfax
Manassas
Bethesda
Oxon Hill
Chantilly
College Park
Linthicum Heights
Gettysburg
Front Royal
Hanover
Cambridge
Ellicott City
Westminster
Arlington
Ashburn
Woodbridge

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Southampton to Washington, D.C. for you.

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

momondo does allow users to show only those flights to Washington, D.C. from Southampton which offer a flexible booking policy as well as other useful filters and features.

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

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 Southampton to Washington, D.C..

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.

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