What airlines fly to Southampton?

British Airways, United Airlines and American Airlines 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 53% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 18 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

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.

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

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

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 July 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.

$386 Cheap Flights from Washington, D.C. to Southampton in 2026

Discover deals from 900+ travel sites with momondo.

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.

8:40 pm - 4:50 pm

IAD

SOU

15h 10m

1 stop

9:20 am - 7:25 pm

SOU

IAD

15h 05m

1 stop

$853Aer Lingus

Sat, Aug 15 - Mon, Aug 31

8:55 pm - 7:30 pm

IAD

SOU

17h 35m

1 stop

9:20 am - 3:45 pm

SOU

IAD

11h 25m

1 stop

$871Aer Lingus

Fri, Sep 4 - Sun, Sep 6

4:20 pm - 4:50 pm

IAD

SOU

19h 30m

2 stops

8:00 pm - 4:05 pm

SOU

IAD

25h 05m

2 stops

$887Multiple Airlines

Sat, Aug 15 - Sat, Aug 22

5:15 pm - 8:40 am

IAD

SOU

10h 25m

1 stop

9:20 am - 3:45 pm

SOU

IAD

11h 25m

1 stop

$894Aer Lingus

Wed, Aug 12 - Wed, Aug 19

5:15 pm - 8:35 am

IAD

SOU

10h 20m

1 stop

9:20 am - 3:45 pm

SOU

IAD

11h 25m

1 stop

$913Aer Lingus

Sat, Aug 15 - Sat, Aug 22

11:20 pm - 12:50 pm

IAD

SOU

32h 30m

2 stops

9:15 am - 3:45 pm

SOU

IAD

11h 30m

1 stop

$917Multiple Airlines

Sun, Oct 11 - Tue, Oct 20

5:15 pm - 8:40 am

IAD

SOU

10h 25m

1 stop

9:20 am - 7:25 pm

SOU

IAD

15h 05m

1 stop

$978Aer Lingus

Sun, Oct 11 - Wed, Oct 21

12:55 pm - 8:45 am

DCA

SOU

14h 50m

2 stops

9:05 am - 11:43 pm

SOU

DCA

19h 38m

2 stops

$1,126Delta

Sun, Aug 23 - Tue, Sep 8

7:35 pm - 5:35 pm

DCA

SOU

17h 00m

2 stops

9:05 am - 10:38 pm

SOU

DCA

18h 33m

2 stops

$1,127Delta

Sun, Aug 23 - Tue, Sep 8

5:00 pm - 8:45 am

BWI

SOU

34h 45m

2 stops

9:05 am - 9:28 pm

SOU

BWI

17h 23m

2 stops

$1,194Virgin Atlantic

Sat, Aug 15 - Mon, Aug 31

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Virgin Atlantic flights from Washington, D.C. to Southampton

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

Virgin Atlantic

Jul 27

IAD6:10 pmWashington, D.C. Dulles Intl

9h 35m

1 stop

SOU8:45 amSouthampton Eastleigh

Aug 3

SOU6:05 pmSouthampton Eastleigh

26h 30m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$1,182

Virgin Atlantic

Jul 27

IAD6:10 pmWashington, D.C. Dulles Intl

9h 35m

1 stop

SOU8:45 amSouthampton Eastleigh

Aug 3

SOU6:05 pmSouthampton Eastleigh

27h 33m

2 stops

IAD4:38 pmWashington, D.C. Dulles Intl

$1,194

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

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

Aer Lingus

Aug 15

IAD8:40 pmWashington, D.C. Dulles Intl

15h 10m

1 stop

SOU4:50 pmSouthampton Eastleigh

Aug 31

SOU9:20 amSouthampton Eastleigh

15h 05m

1 stop

IAD7:25 pmWashington, D.C. Dulles Intl

$853

Aer Lingus

Sep 4

IAD8:55 pmWashington, D.C. Dulles Intl

17h 35m

1 stop

SOU7:30 pmSouthampton Eastleigh

Sep 6

SOU9:20 amSouthampton Eastleigh

11h 25m

1 stop

IAD3:45 pmWashington, D.C. Dulles Intl

$871

Aer Lingus

Aug 12

IAD5:15 pmWashington, D.C. Dulles Intl

10h 25m

1 stop

SOU8:40 amSouthampton Eastleigh

Aug 19

SOU9:20 amSouthampton Eastleigh

11h 25m

1 stop

IAD3:45 pmWashington, D.C. Dulles Intl

$894

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

Cheapest round-trip

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 8/15

8:40 pm-4:50 pm

1 stop15h 10m

Southampton Eastleigh

Mon 8/31

9:20 am-7:25 pm

1 stop15h 05m

$853

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 9/4

8:55 pm-7:30 pm

1 stop17h 35m

Southampton Eastleigh

Sun 9/6

9:20 am-3:45 pm

1 stop11h 25m

$871

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 8/15

4:20 pm-4:50 pm

2 stops19h 30m

Southampton Eastleigh

Sat 8/22

8:00 pm-4:05 pm

2 stops25h 05m

$887

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 8/12

5:15 pm-8:40 am

1 stop10h 25m

Southampton Eastleigh

Wed 8/19

9:20 am-3:45 pm

1 stop11h 25m

$894

Quickest round-trip

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 8/15

5:15 pm-8:35 am

1 stop10h 20m

Southampton Eastleigh

Sat 8/22

9:20 am-3:45 pm

1 stop11h 25m

$913

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 10/11

11:20 pm-12:50 pm

2 stops32h 30m

Southampton Eastleigh

Tue 10/20

9:15 am-3:45 pm

1 stop11h 30m

$917

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 10/11

5:15 pm-8:40 am

1 stop10h 25m

Southampton Eastleigh

Wed 10/21

9:20 am-7:25 pm

1 stop15h 05m

$978

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sun 8/23

12:55 pm-8:45 am

2 stops14h 50m

Southampton Eastleigh

Tue 9/8

9:05 am-11:43 pm

2 stops19h 38m

$1,126

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sun 8/23

7:35 pm-5:35 pm

2 stops17h 00m

Southampton Eastleigh

Tue 9/8

9:05 am-10:38 pm

2 stops18h 33m

$1,127

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Sat 8/15

5:00 pm-8:45 am

2 stops34h 45m

Southampton Eastleigh

Mon 8/31

9:05 am-9:28 pm

2 stops17h 23m

$1,194

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

Prices

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Other information

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

You could potentially save up to 20% 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 35m
Direct flights	None

The fastest flight from Washington, D.C. to Southampton takes 9h 35m

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

Search flight deals

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

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 35m.
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 July 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 7.3 1,641 reviews		Search Aer Lingus flights

Portsmouth

Why use momondo?

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 $386

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 8/22. 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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Virgin Atlantic flights from Washington, D.C. to Southampton

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

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

Our best Aer Lingus 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

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

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?

An easier way to manage your Southampton trip

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