Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Southampton to Washington, D.C. from $402

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 10/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Southampton to Washington, D.C. (SOU-WAS)

Cheap round-trip flights

KLM Logo
9:20 am - 3:35 pmSOU-IAD
11h 15m1 stop
KLM Logo
5:25 pm - 8:45 amIAD-SOU
10h 20m1 stop
$820KLM
Find Deal
Thu, Oct 2 - Thu, Oct 9
Virgin Atlantic Logo
9:20 am - 7:37 pmSOU-IAD
15h 17m2 stops
Virgin Atlantic Logo
5:25 pm - 5:00 pmIAD-SOU
18h 35m1 stop
$825Virgin Atlantic
Find Deal
Thu, Oct 2 - Thu, Oct 9
Delta Logo
9:20 am - 9:44 pmSOU-DCA
17h 24m2 stops
Delta Logo
11:10 am - 8:45 amDCA-SOU
16h 35m2 stops
$825Delta
Find Deal
Thu, Oct 2 - Thu, Oct 9
Delta Logo
9:20 am - 8:33 pmSOU-BWI
16h 13m2 stops
Delta Logo
7:45 pm - 5:00 pmBWI-SOU
16h 15m2 stops
$844Delta
Find Deal
Thu, Oct 2 - Thu, Oct 9
KLM Logo
9:20 am - 7:37 pmSOU-IAD
15h 17m2 stops
KLM Logo
9:20 pm - 5:00 pmIAD-SOU
14h 40m2 stops
$855KLM
Find Deal
Thu, Oct 2 - Thu, Oct 9
Delta Logo
9:20 am - 10:57 pmSOU-BWI
18h 37m2 stops
Delta Logo
6:08 am - 8:45 amBWI-SOU
21h 37m2 stops
$884Delta
Find Deal
Fri, Oct 3 - Fri, Oct 10
Logo
9:40 am - 3:20 pmSOU-IAD
34h 40m2 stops
Logo
5:50 pm - 6:55 pmIAD-SOU
20h 05m3 stops
$954
Find Deal
Thu, Oct 2 - Thu, Oct 9
Logo
8:00 pm - 5:40 pmSOU-BWI
26h 40m3 stops
Logo
6:50 pm - 8:25 amBWI-SOU
32h 35m3 stops
$1,087
Find Deal
Fri, Oct 3 - Fri, Oct 10
British Airways Logo
9:10 am - 3:50 pmSOU-IAD
11h 40m1 stop
British Airways Logo
5:20 pm - 9:10 amIAD-SOU
10h 50m1 stop
$1,178British Airways
Find Deal
Sun, Aug 31 - Sun, Sep 7
British Airways Logo
8:45 am - 8:15 pmSOU-IAD
16h 30m2 stops
British Airways Logo
5:20 pm - 4:45 pmIAD-SOU
18h 25m1 stop
$1,567British Airways
Find Deal
Sun, Aug 31 - Sun, Sep 7

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

Our best British Airways deals on Southampton to Washington, D.C. flight tickets
British Airways
Aug 31
SOU9:10 amSouthampton Eastleigh
11h 40m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
Sep 7
IAD5:20 pmWashington, D.C. Dulles Intl
10h 50m
1 stop
SOU9:10 amSouthampton Eastleigh
$1,178
Find similar
British Airways
Aug 31
SOU8:45 amSouthampton Eastleigh
16h 30m
2 stops
IAD8:15 pmWashington, D.C. Dulles Intl
Sep 7
IAD5:20 pmWashington, D.C. Dulles Intl
18h 25m
1 stop
SOU4:45 pmSouthampton Eastleigh
$1,567
Find similar
British Airways
Dec 20
SOU9:45 amSouthampton Eastleigh
15h 10m
2 stops
IAD7:55 pmWashington, D.C. Dulles Intl
Jan 5
IAD6:20 pmWashington, D.C. Dulles Intl
16h 10m
2 stops
SOU3:30 pmSouthampton Eastleigh
$1,750
Find similar

Delta flights from Southampton to Washington, D.C.

Our best Delta deals on Southampton to Washington, D.C. flight tickets
Delta
Oct 2
SOU9:20 amSouthampton Eastleigh
17h 24m
2 stops
DCA9:44 pmWashington, D.C. Reagan-National
Oct 9
DCA11:10 amWashington, D.C. Reagan-National
16h 35m
2 stops
SOU8:45 amSouthampton Eastleigh
$825
Find similar
Delta
Oct 2
SOU9:20 amSouthampton Eastleigh
16h 13m
2 stops
BWI8:33 pmBaltimore/Washington
Oct 9
BWI7:45 pmBaltimore/Washington
16h 15m
2 stops
SOU5:00 pmSouthampton Eastleigh
$844
Find similar
Delta
Oct 3
SOU9:20 amSouthampton Eastleigh
18h 37m
2 stops
BWI10:57 pmBaltimore/Washington
Oct 10
BWI6:08 amBaltimore/Washington
21h 37m
2 stops
SOU8:45 amSouthampton Eastleigh
$884
Find similar

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 August 20, 2025.
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 10/2

9:20 am-3:35 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Thu 10/9

5:25 pm-8:45 am

1 stop10h 20m

$820

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 10/2

9:20 am-7:37 pm

2 stops15h 17m

Washington, D.C. Dulles Intl

Thu 10/9

5:25 pm-5:00 pm

1 stop18h 35m

$825

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Thu 10/2

9:20 am-9:44 pm

2 stops17h 24m

Washington, D.C. Reagan-National

Thu 10/9

11:10 am-8:45 am

2 stops16h 35m

$825

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Thu 10/2

9:20 am-8:33 pm

2 stops16h 13m

Baltimore/Washington

Thu 10/9

7:45 pm-5:00 pm

2 stops16h 15m

$844

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 10/2

9:20 am-7:37 pm

2 stops15h 17m

Washington, D.C. Dulles Intl

Thu 10/9

9:20 pm-5:00 pm

2 stops14h 40m

$855

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Fri 10/3

9:20 am-10:57 pm

2 stops18h 37m

Baltimore/Washington

Fri 10/10

6:08 am-8:45 am

2 stops21h 37m

$884

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 10/2

9:40 am-3:20 pm

2 stops34h 40m

Washington, D.C. Dulles Intl

Thu 10/9

5:50 pm-6:55 pm

3 stops20h 05m

$954

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Fri 10/3

8:00 pm-5:40 pm

3 stops26h 40m

Baltimore/Washington

Fri 10/10

6:50 pm-8:25 am

3 stops32h 35m

$1,087

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Sun 8/31

9:10 am-3:50 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Sun 9/7

5:20 pm-9:10 am

1 stop10h 50m

$1,178

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Sun 8/31

8:45 am-8:15 pm

2 stops16h 30m

Washington, D.C. Dulles Intl

Sun 9/7

5:20 pm-4:45 pm

1 stop18h 25m

$1,567

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $818. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Southampton to Washington, D.C. for around $950.

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

In the evening is the cheapest time of day to fly from Southampton to Washington, D.C. when you can find flight prices for as low as $762. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $877. 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.

Direct flights

None
There are no direct flights from Southampton to Washington, D.C.. There are no popular flight routes from Southampton to Washington, D.C..
Search flight deals

  • 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 15m.

  • 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
Gettysburg
Arlington
National Harbor
Woodbridge
Waldorf
Tysons
Silver Spring
Laurel
Colonial Beach
Fredericksburg
Manassas
Towson
Rockville
Gaithersburg
Reston
Fairfax
Glen Burnie
Springfield
Linthicum Heights

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.

An easier way to manage your Washington, D.C. 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/25
Mon 9/1
By creating a price alert you accept our terms of use and privacy policy.

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.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport