Cheap flights from Southampton to Washington, D.C. from $689

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 7/4. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:20 pm - 4:15 pm
SOU
-
IAD
27h 55m
2 stops
Delta Logo
5:07 pm - 4:50 pm
IAD
-
SOU
42h 43m
2 stops
$1,073Delta
Thu, Apr 16 - Sun, Apr 19
Delta Logo
5:20 pm - 3:35 pm
SOU
-
IAD
27h 15m
1 stop
Delta Logo
5:07 pm - 4:50 pm
IAD
-
SOU
42h 43m
2 stops
$1,074Delta
Thu, Apr 16 - Sun, Apr 19
Delta Logo
9:05 am - 12:42 am
SOU
-
IAD
20h 37m
2 stops
Delta Logo
5:07 pm - 4:50 pm
IAD
-
SOU
42h 43m
2 stops
$1,087Delta
Fri, Apr 17 - Sun, Apr 19
Multiple Airlines Logo
5:55 pm - 7:35 pm
SOU
-
IAD
30h 40m
2 stops
Multiple Airlines Logo
5:15 pm - 8:35 am
IAD
-
SOU
10h 20m
1 stop
$1,093Multiple Airlines
Mon, Jun 22 - Sat, Jun 27
Delta Logo
5:20 pm - 3:35 pm
SOU
-
IAD
27h 15m
1 stop
Delta Logo
5:40 pm - 8:35 am
IAD
-
SOU
9h 55m
1 stop
$1,109Delta
Thu, Apr 16 - Sun, Apr 19
British Airways Logo
12:25 pm - 7:30 pm
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
6:05 pm - 8:45 am
IAD
-
SOU
10h 40m
1 stop
$1,167British Airways
Wed, Mar 4 - Sun, Mar 8
British Airways Logo
12:25 pm - 7:30 pm
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
10:00 pm - 7:40 pm
IAD
-
SOU
17h 40m
1 stop
$1,169British Airways
Wed, Mar 4 - Sun, Mar 8
British Airways Logo
12:25 pm - 7:30 pm
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
10:45 pm - 9:00 pm
IAD
-
SOU
18h 15m
2 stops
$1,180British Airways
Wed, Mar 4 - Sun, Mar 8
British Airways Logo
12:25 pm - 7:30 pm
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
10:45 pm - 9:00 pm
IAD
-
SOU
18h 15m
2 stops
$1,183British Airways
Wed, Mar 4 - Sun, Mar 8
British Airways Logo
12:25 pm - 7:30 pm
SOU
-
IAD
12h 05m
1 stop
British Airways Logo
10:45 pm - 9:45 am
IAD
-
SOU
31h 00m
2 stops
$1,190British Airways
Wed, Mar 4 - Sun, Mar 8

Delta flights from Southampton to Washington, D.C.

Our best Delta deals on Southampton to Washington, D.C. flight tickets
Delta
Apr 16
SOU5:20 pmSouthampton Eastleigh
27h 55m
2 stops
IAD4:15 pmWashington, D.C. Dulles Intl
Apr 19
IAD5:07 pmWashington, D.C. Dulles Intl
42h 43m
2 stops
SOU4:50 pmSouthampton Eastleigh
$1,073
Delta
Apr 16
SOU5:20 pmSouthampton Eastleigh
27h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Apr 19
IAD5:07 pmWashington, D.C. Dulles Intl
42h 43m
2 stops
SOU4:50 pmSouthampton Eastleigh
$1,074
Delta
Apr 17
SOU9:05 amSouthampton Eastleigh
20h 37m
2 stops
IAD12:42 amWashington, D.C. Dulles Intl
Apr 19
IAD5:07 pmWashington, D.C. Dulles Intl
42h 43m
2 stops
SOU4:50 pmSouthampton Eastleigh
$1,087

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

Our best British Airways deals on Southampton to Washington, D.C. flight tickets
British Airways
Mar 4
SOU12:25 pmSouthampton Eastleigh
12h 05m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
Mar 8
IAD6:05 pmWashington, D.C. Dulles Intl
10h 40m
1 stop
SOU8:45 amSouthampton Eastleigh
$1,167
British Airways
Mar 4
SOU12:25 pmSouthampton Eastleigh
12h 05m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
Mar 8
IAD6:05 pmWashington, D.C. Dulles Intl
10h 40m
1 stop
SOU8:45 amSouthampton Eastleigh
$1,169
British Airways
Mar 4
SOU12:25 pmSouthampton Eastleigh
12h 05m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
Mar 8
IAD10:45 pmWashington, D.C. Dulles Intl
18h 15m
2 stops
SOU9:00 pmSouthampton Eastleigh
$1,180

momondo Fare Finder

 
Customize your flight search to find flights from Southampton to Washington, D.C. 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 February 17, 2026.
Use the filters below to find and compare flights from Southampton to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 4/16

5:20 pm-4:15 pm

2 stops27h 55m

Washington, D.C. Dulles Intl

Sun 4/19

5:07 pm-4:50 pm

2 stops42h 43m

$1,073

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 4/16

5:20 pm-3:35 pm

1 stop27h 15m

Washington, D.C. Dulles Intl

Sun 4/19

5:07 pm-4:50 pm

2 stops42h 43m

$1,074

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 4/17

9:05 am-12:42 am

2 stops20h 37m

Washington, D.C. Dulles Intl

Sun 4/19

5:07 pm-4:50 pm

2 stops42h 43m

$1,087

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 6/22

5:55 pm-7:35 pm

2 stops30h 40m

Washington, D.C. Dulles Intl

Sat 6/27

5:15 pm-8:35 am

1 stop10h 20m

$1,093

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 4/16

5:20 pm-3:35 pm

1 stop27h 15m

Washington, D.C. Dulles Intl

Sun 4/19

5:40 pm-8:35 am

1 stop9h 55m

$1,109

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 3/4

12:25 pm-7:30 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 3/8

6:05 pm-8:45 am

1 stop10h 40m

$1,167

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 3/4

12:25 pm-7:30 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 3/8

10:00 pm-7:40 pm

1 stop17h 40m

$1,169

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 3/4

12:25 pm-7:30 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 3/8

10:45 pm-9:00 pm

2 stops18h 15m

$1,180

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 3/4

12:25 pm-7:30 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 3/8

10:45 pm-9:00 pm

2 stops18h 15m

$1,183

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 3/4

12:25 pm-7:30 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Sun 3/8

10:45 pm-9:45 am

2 stops31h 00m

$1,190

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

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

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 day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Southampton is on a Thursday. momondo users have found tickets for Thursday departures for as low as $749. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Southampton to Washington, D.C. for around $879.

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

In the afternoon is the cheapest time of day to fly from Southampton to Washington, D.C. when you can find flight prices for as low as $818. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $849. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

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

Fastest flight time

11h 30m

Direct flights

None
The fastest flight from Southampton to Washington, D.C. takes 11h 30m
There are no direct flights from Southampton to Washington, D.C.. There are no popular flight routes from Southampton to Washington, D.C..
  • How far is Southampton Eastleigh to Washington, D.C. by plane?

    A flight from Southampton Eastleigh to Washington, D.C. will travel around 3622.6 mi. A reasonable flight in good conditions will take 11h 30m.

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

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

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

    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..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Colonial Beach
Tysons
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Fairfax
Linthicum Heights
Bethesda
Glen Burnie

Why use momondo?

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

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

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

Yes. All flights to Washington, D.C. from Southampton on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Southampton to Washington, D.C. 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 Southampton to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Southampton to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Thu 3/19
Thu 3/26

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.