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 21m on average. London Heathrow Airport is the most popular airport in Southampton.

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 55% 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.

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

Delta and Aer Lingus 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 March 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.

$633 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:15 pm - 8:40 am

IAD

SOU

10h 25m

1 stop

9:20 am - 7:25 pm

SOU

IAD

15h 05m

1 stop

$871Aer Lingus

Sun, May 3 - Sun, May 10

8:30 pm - 7:30 pm

BWI

SOU

18h 00m

2 stops

9:20 am - 7:25 pm

SOU

BWI

15h 05m

2 stops

$889Multiple Airlines

Fri, Sep 11 - Sat, Sep 19

8:30 pm - 7:30 pm

BWI

SOU

18h 00m

2 stops

9:20 am - 7:25 pm

SOU

BWI

15h 05m

2 stops

$918Multiple Airlines

Thu, Sep 17 - Sat, Sep 26

8:30 pm - 7:30 pm

BWI

SOU

18h 00m

2 stops

9:20 am - 7:25 pm

SOU

BWI

15h 05m

2 stops

$975Multiple Airlines

Sun, May 3 - Sun, May 10

6:10 pm - 8:45 am

IAD

SOU

9h 35m

1 stop

5:20 pm - 3:35 pm

SOU

IAD

27h 15m

1 stop

$1,082KLM

Mon, Aug 24 - Mon, Sep 7

12:00 pm - 8:45 am

IAD

SOU

15h 45m

2 stops

5:20 pm - 3:35 pm

SOU

IAD

27h 15m

1 stop

$1,087KLM

Mon, Aug 24 - Mon, Sep 7

6:10 pm - 8:45 am

IAD

SOU

9h 35m

1 stop

5:20 pm - 3:35 pm

SOU

IAD

27h 15m

1 stop

$1,110KLM

Mon, Aug 24 - Mon, Sep 7

7:26 pm - 4:50 pm

BWI

SOU

16h 24m

2 stops

9:05 am - 8:47 pm

SOU

BWI

16h 42m

2 stops

$1,177Delta

Tue, May 5 - Tue, May 12

1:00 pm - 8:45 am

BWI

SOU

14h 45m

2 stops

9:15 am - 10:13 pm

SOU

BWI

17h 58m

2 stops

$1,209Delta

Wed, Aug 12 - Wed, Aug 26

11:30 am - 4:50 pm

DCA

SOU

24h 20m

2 stops

8:45 pm - 11:17 pm

SOU

DCA

31h 32m

2 stops

$4,203British Airways

Fri, Aug 7 - Sun, Aug 23

Delta flights from Washington, D.C. to Southampton

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

Delta

Aug 24

IAD12:30 pmWashington, D.C. Dulles Intl

15h 15m

2 stops

SOU8:45 amSouthampton Eastleigh

Sep 7

SOU9:05 amSouthampton Eastleigh

15h 11m

2 stops

IAD7:16 pmWashington, D.C. Dulles Intl

$1,175

Delta

Aug 12

IAD10:40 amWashington, D.C. Dulles Intl

17h 05m

2 stops

SOU8:45 amSouthampton Eastleigh

Aug 26

SOU9:15 amSouthampton Eastleigh

15h 01m

2 stops

IAD7:16 pmWashington, D.C. Dulles Intl

$1,177

Delta

May 18

IAD6:10 pmWashington, D.C. Dulles Intl

9h 25m

1 stop

SOU8:35 amSouthampton Eastleigh

May 27

SOU9:05 amSouthampton Eastleigh

11h 30m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$1,186

KLM flights from Washington, D.C. to Southampton

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

KLM

Aug 24

IAD6:10 pmWashington, D.C. Dulles Intl

9h 35m

1 stop

SOU8:45 amSouthampton Eastleigh

Sep 7

SOU5:20 pmSouthampton Eastleigh

27h 15m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$1,082

KLM

Aug 24

IAD12:00 pmWashington, D.C. Dulles Intl

15h 45m

2 stops

SOU8:45 amSouthampton Eastleigh

Sep 7

SOU5:20 pmSouthampton Eastleigh

27h 15m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$1,087

KLM

Aug 24

IAD6:10 pmWashington, D.C. Dulles Intl

9h 35m

1 stop

SOU8:45 amSouthampton Eastleigh

Sep 7

SOU5:20 pmSouthampton Eastleigh

27h 15m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$1,110

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

Quickest round-trip

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 5/3

5:15 pm-8:40 am

1 stop10h 25m

Southampton Eastleigh

Sun 5/10

9:20 am-7:25 pm

1 stop15h 05m

$871

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Fri 9/11

8:30 pm-7:30 pm

2 stops18h 00m

Southampton Eastleigh

Sat 9/19

9:20 am-7:25 pm

2 stops15h 05m

$889

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Thu 9/17

8:30 pm-7:30 pm

2 stops18h 00m

Southampton Eastleigh

Sat 9/26

9:20 am-7:25 pm

2 stops15h 05m

$918

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Sun 5/3

8:30 pm-7:30 pm

2 stops18h 00m

Southampton Eastleigh

Sun 5/10

9:20 am-7:25 pm

2 stops15h 05m

$975

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 8/24

6:10 pm-8:45 am

1 stop9h 35m

Southampton Eastleigh

Mon 9/7

5:20 pm-3:35 pm

1 stop27h 15m

$1,082

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 8/24

12:00 pm-8:45 am

2 stops15h 45m

Southampton Eastleigh

Mon 9/7

5:20 pm-3:35 pm

1 stop27h 15m

$1,087

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 8/24

6:10 pm-8:45 am

1 stop9h 35m

Southampton Eastleigh

Mon 9/7

5:20 pm-3:35 pm

1 stop27h 15m

$1,110

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Tue 5/5

7:26 pm-4:50 pm

2 stops16h 24m

Southampton Eastleigh

Tue 5/12

9:05 am-8:47 pm

2 stops16h 42m

$1,177

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 8/12

1:00 pm-8:45 am

2 stops14h 45m

Southampton Eastleigh

Wed 8/26

9:15 am-10:13 pm

2 stops17h 58m

$1,209

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Fri 8/7

11:30 am-4:50 pm

2 stops24h 20m

Southampton Eastleigh

Sun 8/23

8:45 pm-11:17 pm

2 stops31h 32m

$4,203

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 42% 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

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 March 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 1,487 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 $633

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 3/31. 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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Delta flights from Washington, D.C. to Southampton

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

KLM flights from Washington, D.C. to Southampton

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

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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

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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?

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An easier way to manage your Southampton trip

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