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Cheap flights from Southampton to Washington, D.C. from £495

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 28/5. 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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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:10 - 15:20
SOU
-
IAD
24h 10m
1 stop
Multiple Airlines Logo
17:40 - 11:55
IAD
-
SOU
13h 15m
2 stops
£717Multiple Airlines
Fri, 27 Feb - Tue, 3 Mar
Delta Logo
08:50 - 20:45
SOU
-
IAD
16h 55m
2 stops
Delta Logo
12:35 - 08:20
IAD
-
SOU
14h 45m
2 stops
£751Delta
Fri, 27 Feb - Tue, 3 Mar
British Airways Logo
12:25 - 19:30
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
22:00 - 19:40
IAD
-
SOU
17h 40m
1 stop
£835British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:25 - 19:30
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
22:00 - 19:40
IAD
-
SOU
17h 40m
1 stop
£837British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:25 - 19:30
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
18:05 - 08:45
IAD
-
SOU
10h 40m
1 stop
£843British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:25 - 19:30
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
22:45 - 21:00
IAD
-
SOU
18h 15m
2 stops
£845British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:25 - 19:30
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
22:45 - 21:00
IAD
-
SOU
18h 15m
2 stops
£848British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
12:25 - 19:30
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
22:45 - 21:00
IAD
-
SOU
18h 15m
2 stops
£853British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
06:50 - 19:55
SOU
-
IAD
18h 05m
2 stops
British Airways Logo
22:45 - 21:00
IAD
-
SOU
18h 15m
2 stops
£874British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
06:50 - 19:55
SOU
-
IAD
18h 05m
2 stops
British Airways Logo
22:45 - 21:00
IAD
-
SOU
18h 15m
2 stops
£877British Airways
Wed, 4 Mar - Sun, 8 Mar

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
4 Mar
SOU12:25Southampton Eastleigh
12h 05m
1 stop
IAD19:30Washington, D.C. Dulles Intl
8 Mar
IAD22:00Washington, D.C. Dulles Intl
17h 40m
1 stop
SOU19:40Southampton Eastleigh
£835
British Airways
4 Mar
SOU12:25Southampton Eastleigh
12h 05m
1 stop
IAD19:30Washington, D.C. Dulles Intl
8 Mar
IAD22:00Washington, D.C. Dulles Intl
17h 40m
1 stop
SOU19:40Southampton Eastleigh
£837
British Airways
4 Mar
SOU12:25Southampton Eastleigh
12h 05m
1 stop
IAD19:30Washington, D.C. Dulles Intl
8 Mar
IAD18:05Washington, D.C. Dulles Intl
10h 40m
1 stop
SOU08:45Southampton Eastleigh
£843

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 February 2026.
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

Fri 27/2

20:10-15:20

1 stop24h 10m

Washington, D.C. Dulles Intl

Tue 3/3

17:40-11:55

2 stops13h 15m

£717

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 27/2

08:50-20:45

2 stops16h 55m

Washington, D.C. Dulles Intl

Tue 3/3

12:35-08:20

2 stops14h 45m

£751

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

12:25-19:30

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 8/3

22:00-19:40

1 stop17h 40m

£835

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

12:25-19:30

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 8/3

22:00-19:40

1 stop17h 40m

£837

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

12:25-19:30

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 8/3

18:05-08:45

1 stop10h 40m

£843

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

12:25-19:30

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 8/3

22:45-21:00

2 stops18h 15m

£845

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

12:25-19:30

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 8/3

22:45-21:00

2 stops18h 15m

£848

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

12:25-19:30

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 8/3

22:45-21:00

2 stops18h 15m

£853

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

06:50-19:55

2 stops18h 05m

Washington, D.C. Dulles Intl

Sun 8/3

22:45-21:00

2 stops18h 15m

£874

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/3

06:50-19:55

2 stops18h 05m

Washington, D.C. Dulles Intl

Sun 8/3

22:45-21:00

2 stops18h 15m

£877

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 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, Thursday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Southampton. The lowest ticket price found for a Thursday departure recently was £573. 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 £616.

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 at midday when flights can be purchased for as low as £583. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the morning when prices are around £586.

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

Fastest flight time

11h 35m

Direct flights

None
The fastest flight from Southampton to Washington, D.C. Dulles Intl Airport takes 11h 35m
There are no direct flights from Southampton to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Southampton to Washington, D.C. Dulles Intl Airport.
Search flight deals

  • 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 11h 35m.

  • 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
Laurel
College Park
Fairfax
Arlington
Linthicum Heights
Alexandria
Glen Burnie
Lutherville Timonium
Front Royal
Winchester
Ellicott City
Cambridge
Lexington Park
Westminster
Woodbridge
Bethesda
Ashburn
Sterling
Rockville
Silver Spring

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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