What is the cheapest airline that flies from Southampton Eastleigh to Washington, D.C. Dulles Intl?

Aer Lingus and Delta are the most popular carriers operating from Southampton Eastleigh to Washington, D.C. Dulles Intl

Which airlines fly to Washington, D.C. Dulles Intl Airport?

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Southampton according to our data. Virgin Atlantic is the first choice among our users, with 34% of people opting to fly with this airline when travelling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 16 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

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

The number of operators available for flights from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport is 1 as of November 2026.

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.

£321 Cheap Flights from Southampton to Washington, D.C. Dulles Intl Airport in 2026/27

Discover deals from 900+ travel sites with momondo.

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

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Cheap return flights

Enter your travel dates to find the best prices.

09:20 - 15:45SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

11h 25m1 stop Dublin

17:15 - 08:45IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

10h 30m1 stop Dublin

£526Aer Lingus

Sat, 27 Feb - Fri, 5 Mar

12:25 - 19:20SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Dublin

17:15 - 08:50IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

10h 35m1 stop Dublin

£578Aer Lingus

Sun, 6 Dec - Sun, 13 Dec

12:25 - 19:20SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Dublin

17:15 - 08:50IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

10h 35m1 stop Dublin

£632Aer Lingus

Mon, 21 Dec - Mon, 28 Dec

09:20 - 15:45SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

11h 25m1 stop Dublin

17:15 - 08:45IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

10h 30m1 stop Dublin

£671Aer Lingus

Fri, 18 Dec - Sun, 27 Dec

08:40 - 15:45SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

12h 05m1 stop Amsterdam Schiphol

18:15 - 17:05IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

17h 50m1 stop Amsterdam Schiphol

£691Delta

Thu, 24 Dec - Thu, 31 Dec

08:40 - 15:45SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

12h 05m1 stop Amsterdam Schiphol

06:00 - 08:10IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

21h 10m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

£691Delta

Thu, 24 Dec - Thu, 31 Dec

08:40 - 22:56SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

19h 16m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

06:00 - 08:10IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

21h 10m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

£695Delta

Thu, 24 Dec - Thu, 31 Dec

09:30 - 15:40SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

11h 10m1 stop Amsterdam Schiphol

12:35 - 08:10IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

14h 35m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£697Delta

Sun, 6 Dec - Sun, 13 Dec

09:25 - 20:26SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

16h 01m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

18:15 - 08:55IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

9h 40m1 stop Amsterdam Schiphol

£703Delta

Sat, 27 Feb - Fri, 5 Mar

09:20 - 15:45SOU Southampton Eastleigh-IAD Washington, D.C. Dulles Intl

11h 25m1 stop Dublin

17:15 - 08:50IAD Washington, D.C. Dulles Intl-SOU Southampton Eastleigh

10h 35m1 stop Dublin

£708Aer Lingus

Sun, 28 Feb - Mon, 1 Mar

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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

9 Dec

SOU09:20Southampton Eastleigh

15h 00m

1 stop

IAD19:20Washington, D.C. Dulles Intl

17 Dec

IAD17:15Washington, D.C. Dulles Intl

10h 35m

1 stop

SOU08:50Southampton Eastleigh

£800

British Airways

3 Feb

SOU12:20Southampton Eastleigh

32h 25m

1 stop

IAD15:45Washington, D.C. Dulles Intl

7 Feb

IAD17:15Washington, D.C. Dulles Intl

13h 40m

1 stop

SOU11:55Southampton Eastleigh

£802

British Airways

20 Dec

SOU09:20Southampton Eastleigh

11h 25m

1 stop

IAD15:45Washington, D.C. Dulles Intl

31 Dec

IAD17:15Washington, D.C. Dulles Intl

10h 35m

1 stop

SOU08:50Southampton Eastleigh

£805

Aer Lingus flights from Southampton to Washington, D.C. Dulles Intl Airport

Our best Aer Lingus deals on Southampton to Washington, D.C. Dulles Intl Airport flight tickets

Aer Lingus

27 Feb

SOU09:20Southampton Eastleigh

11h 25m

1 stop

IAD15:45Washington, D.C. Dulles Intl

5 Mar

IAD17:15Washington, D.C. Dulles Intl

10h 30m

1 stop

SOU08:45Southampton Eastleigh

£526

Aer Lingus

6 Dec

SOU12:25Southampton Eastleigh

11h 55m

1 stop

IAD19:20Washington, D.C. Dulles Intl

13 Dec

IAD17:15Washington, D.C. Dulles Intl

10h 35m

1 stop

SOU08:50Southampton Eastleigh

£578

Aer Lingus

21 Dec

SOU12:25Southampton Eastleigh

11h 55m

1 stop

IAD19:20Washington, D.C. Dulles Intl

28 Dec

IAD17:15Washington, D.C. Dulles Intl

10h 35m

1 stop

SOU08:50Southampton Eastleigh

£632

momondo Fare Finder

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

Cheapest return flight

Fastest return journey

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Sat 27/2

09:20-15:45

1 stop11h 25m

Washington, D.C. Dulles Intl

Fri 5/3

17:15-08:45

1 stop10h 30m

£526

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Sun 6/12

12:25-19:20

1 stop11h 55m

Washington, D.C. Dulles Intl

Sun 13/12

17:15-08:50

1 stop10h 35m

£578

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Mon 21/12

12:25-19:20

1 stop11h 55m

Washington, D.C. Dulles Intl

Mon 28/12

17:15-08:50

1 stop10h 35m

£632

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Fri 18/12

09:20-15:45

1 stop11h 25m

Washington, D.C. Dulles Intl

Sun 27/12

17:15-08:45

1 stop10h 30m

£671

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Thu 24/12

08:40-15:45

1 stop12h 05m

Washington, D.C. Dulles Intl

Thu 31/12

18:15-17:05

1 stop17h 50m

£691

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Thu 24/12

08:40-15:45

1 stop12h 05m

Washington, D.C. Dulles Intl

Thu 31/12

06:00-08:10

2 stops21h 10m

£691

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Thu 24/12

08:40-22:56

2 stops19h 16m

Washington, D.C. Dulles Intl

Thu 31/12

06:00-08:10

2 stops21h 10m

£695

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Sun 6/12

09:30-15:40

1 stop11h 10m

Washington, D.C. Dulles Intl

Sun 13/12

12:35-08:10

2 stops14h 35m

£697

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Sat 27/2

09:25-20:26

2 stops16h 01m

Washington, D.C. Dulles Intl

Fri 5/3

18:15-08:55

1 stop9h 40m

£703

SouthamptonWashington, D.C.

SOU Southampton Eastleigh - IAD Washington, D.C. Dulles Intl

SOUIAD

Southampton Eastleigh

Sun 28/2

09:20-15:45

1 stop11h 25m

Washington, D.C. Dulles Intl

Mon 1/3

17:15-08:50

1 stop10h 35m

£708

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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

According to our data, Friday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Southampton. The lowest ticket price found for a Friday departure recently was £563. 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 £637.

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 £563. 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 £598.

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	£321
Fastest flight time	11h 15m
Direct flights	None

The best one-way flight to Washington, D.C. Dulles Intl Airport from Southampton in the past 72 hours is £321. The best return flight deal from Southampton to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £526.

The fastest flight from Southampton to Washington, D.C. Dulles Intl Airport takes 11h 15m

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

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

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 15m.
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 many operators does momondo search for flights from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport is 1 as of November 2026.
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.
What is the most popular airline from Southampton to Washington, D.C. Dulles Intl Airport?
momondo data reveals that the most frequently booked airline on the route from Southampton to Washington, D.C. Dulles Intl Airport is Aer Lingus, representing 100% of all bookings.

Best airlines flying from Southampton to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Southampton to Washington, D.C. Dulles Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom £452	Free Cancellation	Rating 7.3 1,883 reviews		Search Aer Lingus flights

Alexandria

Springfield

Arlington

National Harbor

College Park

Fairfax

Sterling

Linthicum Heights

Lutherville Timonium

Gettysburg

Ellicott City

Glen Burnie

Laurel

Winchester

Woodbridge

Lexington Park

Leesburg

Bethesda

Silver Spring

Rockville

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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?

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Cheap flights from Southampton to Washington, D.C. from £321

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 12/1. 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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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

Aer Lingus flights from Southampton to Washington, D.C. Dulles Intl Airport

Our best Aer Lingus deals on Southampton to Washington, D.C. Dulles Intl Airport flight tickets

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

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

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

What is the cheapest airline that flies from Southampton Eastleigh to Washington, D.C. Dulles Intl?

Which airlines fly to Washington, D.C. Dulles Intl Airport?

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

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

Best price found

Fastest flight time

Direct flights

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

Best airlines flying from Southampton to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Southampton to Washington, D.C. Dulles Intl Airport with momondo

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

Why use momondo?

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

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