What airlines fly to Southampton?

British Airways, United Airlines and Iberia are the top three most popular airlines that fly to Southampton from Washington, D.C. according to our data. British Airways is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 19 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

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

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

How long does it take to fly to Southampton?

Average flight duration from Washington, D.C. to Southampton depends on which airport you fly into and out of. Flying from Baltimore to London Heathrow Airport is 7h 05m on average, while flying from Washington, D.C. to London Heathrow Airport is 8h 12m on average. London Heathrow Airport is the most popular airport in Southampton.

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

Prices for flights from Washington, D.C. to Southampton Eastleigh Airport were last updated today.

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

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

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Southampton Eastleigh Airport.

What documentation or ID do you need to fly to Southampton Eastleigh Airport?

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

$340 Cheap Flights from Washington, D.C. to Southampton in 2026

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:05 pm - 5:00 pm

IAD

SOU

17h 55m

1 stop

5:20 pm - 3:35 pm

SOU

IAD

27h 15m

1 stop

$775Delta

Thu, Mar 19 - Tue, Mar 31

7:05 pm - 5:05 pm

IAD

SOU

18h 00m

1 stop

5:35 pm - 5:05 pm

SOU

IAD

27h 30m

1 stop

$776Delta

Sun, Mar 15 - Wed, Mar 25

1:19 pm - 8:20 am

IAD

SOU

15h 01m

2 stops

5:20 pm - 3:35 pm

SOU

IAD

27h 15m

1 stop

$780Delta

Mon, Mar 23 - Tue, Mar 31

7:18 am - 8:20 am

IAD

SOU

21h 02m

2 stops

5:35 pm - 5:05 pm

SOU

IAD

27h 30m

1 stop

$781Delta

Wed, Mar 18 - Tue, Mar 24

9:40 am - 3:35 pm

DCA

SOU

24h 55m

2 stops

8:10 pm - 6:05 pm

SOU

DCA

25h 55m

2 stops

$984Multiple Airlines

Sat, Mar 7 - Fri, Mar 13

9:40 am - 5:45 pm

DCA

SOU

27h 05m

3 stops

8:10 pm - 7:45 pm

SOU

DCA

27h 35m

2 stops

$1,075Multiple Airlines

Sat, Mar 7 - Fri, Mar 13

9:30 pm - 7:30 pm

BWI

SOU

17h 00m

2 stops

8:00 pm - 7:45 pm

SOU

BWI

28h 45m

2 stops

$1,281Aer Lingus

Sat, May 23 - Sat, May 30

11:00 am - 8:35 am

DCA

SOU

16h 35m

2 stops

9:15 am - 11:26 pm

SOU

DCA

19h 11m

2 stops

$1,288Scandinavian Airlines

Wed, Jun 17 - Sun, Jun 21

9:30 pm - 7:30 pm

BWI

SOU

17h 00m

2 stops

9:10 am - 7:45 pm

SOU

BWI

15h 35m

2 stops

$1,318Aer Lingus

Fri, May 22 - Sun, May 31

1:00 pm - 8:35 am

BWI

SOU

14h 35m

2 stops

9:15 am - 10:13 pm

SOU

BWI

17h 58m

2 stops

$1,516Scandinavian Airlines

Wed, Jun 17 - Sun, Jun 21

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

Our best British Airways deals on Washington, D.C. to Southampton flight tickets

British Airways

Feb 25

IAD5:05 pmWashington, D.C. Dulles Intl

10h 40m

1 stop

SOU8:45 amSouthampton Eastleigh

Mar 1

SOU10:35 amSouthampton Eastleigh

13h 55m

2 stops

IAD7:30 pmWashington, D.C. Dulles Intl

$4,064

British Airways

Feb 25

IAD5:05 pmWashington, D.C. Dulles Intl

10h 40m

1 stop

SOU8:45 amSouthampton Eastleigh

Mar 1

SOU8:25 pmSouthampton Eastleigh

28h 05m

2 stops

IAD7:30 pmWashington, D.C. Dulles Intl

$4,065

British Airways

Feb 25

IAD5:05 pmWashington, D.C. Dulles Intl

10h 40m

1 stop

SOU8:45 amSouthampton Eastleigh

May 9

SOU6:50 amSouthampton Eastleigh

15h 35m

2 stops

IAD5:25 pmWashington, D.C. Dulles Intl

$4,122

Delta flights from Washington, D.C. to Southampton

Our best Delta deals on Washington, D.C. to Southampton flight tickets

Delta

Mar 19

IAD7:05 pmWashington, D.C. Dulles Intl

17h 55m

1 stop

SOU5:00 pmSouthampton Eastleigh

Mar 31

SOU5:20 pmSouthampton Eastleigh

27h 15m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$775

Delta

Mar 15

IAD7:05 pmWashington, D.C. Dulles Intl

18h 00m

1 stop

SOU5:05 pmSouthampton Eastleigh

Mar 25

SOU5:35 pmSouthampton Eastleigh

27h 30m

1 stop

IAD5:05 pmWashington, D.C. Dulles Intl

$776

Delta

Mar 23

IAD1:19 pmWashington, D.C. Dulles Intl

15h 01m

2 stops

SOU8:20 amSouthampton Eastleigh

Mar 31

SOU5:20 pmSouthampton Eastleigh

27h 15m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$780

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 3/19

7:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Tue 3/31

5:20 pm-3:35 pm

1 stop27h 15m

$775

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 3/15

7:05 pm-5:05 pm

1 stop18h 00m

Southampton Eastleigh

Wed 3/25

5:35 pm-5:05 pm

1 stop27h 30m

$776

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 3/23

1:19 pm-8:20 am

2 stops15h 01m

Southampton Eastleigh

Tue 3/31

5:20 pm-3:35 pm

1 stop27h 15m

$780

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 3/18

7:18 am-8:20 am

2 stops21h 02m

Southampton Eastleigh

Tue 3/24

5:35 pm-5:05 pm

1 stop27h 30m

$781

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sat 3/7

9:40 am-3:35 pm

2 stops24h 55m

Southampton Eastleigh

Fri 3/13

8:10 pm-6:05 pm

2 stops25h 55m

$984

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sat 3/7

9:40 am-5:45 pm

3 stops27h 05m

Southampton Eastleigh

Fri 3/13

8:10 pm-7:45 pm

2 stops27h 35m

$1,075

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Sat 5/23

9:30 pm-7:30 pm

2 stops17h 00m

Southampton Eastleigh

Sat 5/30

8:00 pm-7:45 pm

2 stops28h 45m

$1,281

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Wed 6/17

11:00 am-8:35 am

2 stops16h 35m

Southampton Eastleigh

Sun 6/21

9:15 am-11:26 pm

2 stops19h 11m

$1,288

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Fri 5/22

9:30 pm-7:30 pm

2 stops17h 00m

Southampton Eastleigh

Sun 5/31

9:10 am-7:45 pm

2 stops15h 35m

$1,318

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 6/17

1:00 pm-8:35 am

2 stops14h 35m

Southampton Eastleigh

Sun 6/21

9:15 am-10:13 pm

2 stops17h 58m

$1,516

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

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Other information

Can stopping save me money on Washington, D.C. to Southampton flights?

You could potentially save up to 14% on your flight if you consider stops on a Washington, D.C. to Southampton flight.

When to book flights from Washington, D.C. to Southampton

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

Estimated round-trip price

Cheap Washington, D.C. to Southampton (WAS to SOU) flight deals and tips

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

Fastest flight time	9h 45m
Direct flights	None

The fastest flight from Washington, D.C. to Southampton takes 9h 45m

There are no direct flights from Washington, D.C. to Southampton. There are no popular flight routes from Washington, D.C. to Southampton.

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How far is Washington, D.C. to Southampton Eastleigh by plane?
Washington, D.C. and Southampton Eastleigh are 3622.6 mi apart from one another. A reasonable flight in good conditions will take 9h 45m.
When did momondo last update prices for flights from Washington, D.C. to Southampton Eastleigh Airport?
Prices for flights from Washington, D.C. to Southampton Eastleigh Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. to Southampton Eastleigh Airport?
The number of operators available for flights from Washington, D.C. to Southampton Eastleigh Airport is 1 as of February 2026.
How old do you have to be to fly from Washington, D.C. to Southampton Eastleigh Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Southampton Eastleigh Airport.
What documentation or ID do you need to fly to Southampton Eastleigh Airport?
The travel and health documents you'll need for your trip to Southampton Eastleigh 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 Southampton Eastleigh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Washington, D.C. to Southampton

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

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom $789	Free Cancellation	Rating 7.2 1,449 reviews		Search Aer Lingus flights

Portsmouth

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Southampton. momondo saves you time and could save you money on your trip.

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

All flight searches from Washington, D.C. to Southampton on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Washington, D.C. to Southampton flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington, D.C. to Southampton right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Southampton flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Washington, D.C. to London from $340

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to London departing on 7/27. 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 Washington, D.C. to Southampton

Our best British Airways deals on Washington, D.C. to Southampton flight tickets

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Our best Delta deals on Washington, D.C. to Southampton flight tickets

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See travel insights to London from

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

Can stopping save me money on Washington, D.C. to Southampton flights?

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

What airlines fly to Southampton?

How long does it take to fly to Southampton?

When to book flights from Washington, D.C. to Southampton

Cheap Washington, D.C. to Southampton (WAS to SOU) flight deals and tips

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

Fastest flight time

Direct flights

Best airlines flying from Washington, D.C. to Southampton

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

Traveling to a place near London?

Why use momondo?

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

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

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

I’m not ready to book a flight from Washington, D.C. to Southampton right now. Can momondo alert me if prices change?

An easier way to manage your Southampton trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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