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Cheap flights from Washington, D.C. Reagan-National Airport to London from $638

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. Reagan-National Airport to London departing on 3/30. 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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Find the cheapest flights from Washington, D.C. Reagan-National Airport to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
12:59 pm - 8:35 am
DCA
-
SOU
14h 36m
2 stops
KLM Logo
9:05 am - 8:45 pm
SOU
-
DCA
16h 40m
2 stops
$1,127KLM
Tue, May 5 - Tue, May 12
Delta Logo
11:00 am - 8:45 am
DCA
-
SOU
16h 45m
2 stops
Delta Logo
9:05 am - 10:44 pm
SOU
-
DCA
18h 39m
2 stops
$1,181Delta
Fri, May 8 - Fri, May 15
KLM Logo
1:45 pm - 8:45 am
DCA
-
SOU
14h 00m
2 stops
KLM Logo
9:05 am - 6:11 pm
SOU
-
DCA
14h 06m
2 stops
$1,209KLM
Sat, Aug 29 - Mon, Sep 7
Delta Logo
12:00 pm - 8:45 am
DCA
-
SOU
15h 45m
2 stops
Delta Logo
9:05 am - 11:26 pm
SOU
-
DCA
19h 21m
2 stops
$1,259Delta
Sat, Aug 29 - Mon, Sep 7
Delta Logo
12:00 pm - 8:45 am
DCA
-
SOU
15h 45m
2 stops
Delta Logo
9:15 am - 11:56 pm
SOU
-
DCA
19h 41m
2 stops
$1,271Delta
Sun, Jul 19 - Fri, Jul 24
Delta Logo
11:00 am - 8:35 am
DCA
-
SOU
16h 35m
2 stops
Delta Logo
9:05 am - 11:43 pm
SOU
-
DCA
19h 38m
2 stops
$1,445Delta
Tue, May 26 - Thu, Jul 2
Delta Logo
12:59 pm - 8:35 am
DCA
-
SOU
14h 36m
2 stops
Delta Logo
9:05 am - 8:48 pm
SOU
-
DCA
16h 43m
2 stops
$1,980Delta
Tue, May 26 - Fri, Jul 3
British Airways Logo
11:30 am - 4:50 pm
DCA
-
SOU
24h 20m
2 stops
British Airways Logo
8:45 pm - 11:17 pm
SOU
-
DCA
31h 32m
2 stops
$4,203British Airways
Fri, Aug 7 - Sun, Aug 23

KLM flights from Washington, D.C. Reagan-National Airport to Southampton

Our best KLM deals on Washington, D.C. Reagan-National Airport to Southampton flight tickets
KLM
May 5
DCA12:59 pmWashington, D.C. Reagan-National
14h 36m
2 stops
SOU8:35 amSouthampton Eastleigh
May 12
SOU9:05 amSouthampton Eastleigh
16h 40m
2 stops
DCA8:45 pmWashington, D.C. Reagan-National
$1,127
KLM
Aug 29
DCA1:45 pmWashington, D.C. Reagan-National
14h 00m
2 stops
SOU8:45 amSouthampton Eastleigh
Sep 7
SOU9:05 amSouthampton Eastleigh
14h 06m
2 stops
DCA6:11 pmWashington, D.C. Reagan-National
$1,209

Delta flights from Washington, D.C. Reagan-National Airport to Southampton

Our best Delta deals on Washington, D.C. Reagan-National Airport to Southampton flight tickets
Delta
May 8
DCA11:00 amWashington, D.C. Reagan-National
16h 45m
2 stops
SOU8:45 amSouthampton Eastleigh
May 15
SOU9:05 amSouthampton Eastleigh
18h 39m
2 stops
DCA10:44 pmWashington, D.C. Reagan-National
$1,181
Delta
Aug 29
DCA12:00 pmWashington, D.C. Reagan-National
15h 45m
2 stops
SOU8:45 amSouthampton Eastleigh
Sep 7
SOU9:05 amSouthampton Eastleigh
19h 21m
2 stops
DCA11:26 pmWashington, D.C. Reagan-National
$1,259
Delta
Jul 19
DCA12:00 pmWashington, D.C. Reagan-National
15h 45m
2 stops
SOU8:45 amSouthampton Eastleigh
Jul 24
SOU9:15 amSouthampton Eastleigh
19h 41m
2 stops
DCA11:56 pmWashington, D.C. Reagan-National
$1,271

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Southampton 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 832,500 searches. Data last updated March 25, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Tue 5/5

12:59 pm-8:35 am

2 stops14h 36m

Southampton Eastleigh

Tue 5/12

9:05 am-8:45 pm

2 stops16h 40m

$1,127

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Fri 5/8

11:00 am-8:45 am

2 stops16h 45m

Southampton Eastleigh

Fri 5/15

9:05 am-10:44 pm

2 stops18h 39m

$1,181
Quickest round-trip

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sat 8/29

1:45 pm-8:45 am

2 stops14h 00m

Southampton Eastleigh

Mon 9/7

9:05 am-6:11 pm

2 stops14h 06m

$1,209

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sat 8/29

12:00 pm-8:45 am

2 stops15h 45m

Southampton Eastleigh

Mon 9/7

9:05 am-11:26 pm

2 stops19h 21m

$1,259

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Sun 7/19

12:00 pm-8:45 am

2 stops15h 45m

Southampton Eastleigh

Fri 7/24

9:15 am-11:56 pm

2 stops19h 41m

$1,271

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Tue 5/26

11:00 am-8:35 am

2 stops16h 35m

Southampton Eastleigh

Thu 7/2

9:05 am-11:43 pm

2 stops19h 38m

$1,445

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Tue 5/26

12:59 pm-8:35 am

2 stops14h 36m

Southampton Eastleigh

Fri 7/3

9:05 am-8:48 pm

2 stops16h 43m

$1,980

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
Cheapest one-way

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 3/30

5:05 pm-8:35 am

2 stops34h 30m

$638

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 3/30

3:50 pm-4:50 pm

2 stops20h 00m

$639

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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

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

Delta is the most popular carrier operating from Washington, D.C. Reagan-National to Southampton Eastleigh

What airlines fly to Southampton?

JetBlue, American Airlines and British Airways are the top three most popular airlines that fly to Southampton from Washington, D.C. Reagan-National Airport according to our data. JetBlue is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 7 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

When to book flights from Washington, D.C. Reagan-National Airport to Southampton

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport to Southampton (DCA to SOU) flight deals and tips

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

Fastest flight time

14h 36m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Southampton takes 14h 36m
There are no direct flights from Washington, D.C. Reagan-National Airport to Southampton. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Southampton.
Search flight deals

  • How far is Washington, D.C. Reagan-National to Southampton Eastleigh by plane?

    There are 3625.1 mi between Washington, D.C. Reagan-National and Southampton Eastleigh. Flights usually cover this in 14h 36m, depending on flying conditions and air traffic around both airports.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Southampton Eastleigh Airport.

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

    The required travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

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

It is quick and easy to find Washington, D.C. to Southampton flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southampton that suits you.

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

momondo does allow users to show only those flights to Southampton from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Southampton from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Southampton from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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