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$482+ Cheap flights from Washington, D.C. (WAS) to Southampton (SOU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOU
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Southampton

Cheapest flights from Washington, D.C. to Southampton
Explore the most affordable flight options available from Washington, D.C. to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/197:05 pm
IAD
-
SOU
1 stop17h 55m
Delta
Thu 3/268:50 am
SOU
-
IAD
1 stop12h 15m
Delta
Deal found 2/3$777
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:05 pm
IAD
-
SOU
1 stop18h 00m
Delta
Sat 3/75:30 pm
SOU
-
IAD
1 stop27h 35m
Delta
Deal found 2/2$779
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
IAD
-
SOU
2 stops20h 20m
Delta
Thu 3/128:50 am
SOU
-
IAD
1 stop12h 15m
Delta
Deal found 2/2$783
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/208:45 pm
DCA
-
SOU
2 stops16h 15m
Delta
Fri 3/278:50 am
SOU
-
DCA
2 stops17h 46m
Delta
Deal found 2/3$792
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:10 pm
IAD
-
SOU
1 stop9h 35m
Delta
Mon 9/79:05 am
SOU
-
IAD
1 stop11h 30m
Delta
Deal found 2/3$792
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/197:05 pm
IAD
-
SOU
1 stop17h 55m
Delta
Wed 4/89:05 am
SOU
-
IAD
1 stop11h 30m
Delta
Deal found 2/2$795
This Gurufare deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/64:39 pm
BWI
-
SOU
2 stops34h 31m
Scandinavian Airlines
Sun 12/139:30 am
SOU
-
BWI
2 stops18h 25m
Scandinavian Airlines
Deal found 2/3$806
This KLM deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/207:05 pm
IAD
-
SOU
1 stop9h 45m
KLM
Fri 3/275:35 pm
SOU
-
IAD
1 stop27h 30m
KLM
Deal found 2/3$842
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:00 am
DCA
-
SOU
2 stops16h 45m
Delta
Mon 9/79:05 am
SOU
-
DCA
2 stops19h 07m
Delta
Deal found 2/3$917
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:00 pm
BWI
-
SOU
2 stops14h 45m
Delta
Mon 9/79:05 am
SOU
-
BWI
2 stops18h 08m
Delta
Deal found 2/1$928
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:00 am
DCA
-
SOU
2 stops21h 35m
Delta
Tue 5/269:05 am
SOU
-
DCA
2 stops17h 40m
Delta
Deal found 2/3$1,017
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:00 am
DCA
-
SOU
2 stops16h 35m
Delta
Thu 5/289:05 am
SOU
-
DCA
2 stops17h 55m
Delta
Deal found 2/2$1,019

Find flight deals from Washington, D.C. to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$777
(Delta)

One-way from

$482
(KAYAK)

Popular in

June

Cheapest in

September

Average price

$643
Provider with most accurate pricing for Washington, D.C. (WAS)-Southampton Eastleigh flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Southampton Eastleigh flights.
Search Deals
From Washington, D.C. (WAS) to Southampton Eastleigh
Search Deals
One-way flight from Washington, D.C. (WAS) to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Southampton that are best for you.

Fly from

Washington, D.C.

Fly to

Southampton

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 3/19

7:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Thu 3/26

8:50 am-5:05 pm

1 stop12h 15m

$777

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 3/1

6:05 pm-5:05 pm

1 stop18h 00m

Southampton Eastleigh

Mon 3/9

8:50 am-5:05 pm

1 stop12h 15m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 3/3

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Wed 3/11

5:35 pm-5:05 pm

1 stop27h 30m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 3/2

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Thu 3/12

8:50 am-5:05 pm

1 stop12h 15m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 3/4

6:05 pm-5:25 pm

1 stop18h 20m

Southampton Eastleigh

Mon 3/9

5:40 pm-5:05 pm

1 stop27h 25m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 3/5

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Fri 3/13

5:35 pm-5:05 pm

1 stop27h 30m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 3/3

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Thu 3/12

8:50 am-5:05 pm

1 stop12h 15m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 3/4

6:05 pm-5:25 pm

1 stop18h 20m

Southampton Eastleigh

Wed 3/11

5:35 pm-5:05 pm

1 stop27h 30m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 3/2

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Sun 3/8

9:30 am-5:05 pm

1 stop11h 35m

$779

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 3/5

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Wed 3/11

5:35 pm-5:05 pm

1 stop27h 30m

$779

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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Compare providers for flights from Washington, D.C. to Southampton

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Southampton in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Southampton flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Southampton flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Southampton flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Southampton flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Southampton flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Southampton

What is the cheapest month to book a flight from Washington, D.C. to Southampton?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Southampton (average of $31). Flying from Washington, D.C. to Southampton in June is currently the most expensive (average of $720). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Southampton from Washington, D.C.?

    For a flight from Washington, D.C. to Southampton, you will be flying into Eastleigh. Southampton Eastleigh (SOU) is just 3.5 mi from the center of the city. Eastleigh is the only Southampton airport and it handles 0 inbound flights from Washington, D.C. per day. 1 airline has flights to Southampton Eastleigh from Washington, D.C. on a regular basis.

  • How long is the flight from Washington, D.C. to Southampton?

    A quick flight from Washington, D.C. to Southampton can take about 17h 28m. Delta provides one of the quickest options available for as low as $1,184. Airlines will cover a distance of 3597 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Washington, D.C. to Southampton round-trip?

    Cheapflights users have booked flights from Washington, D.C. to Southampton round-trip from $789.

  • What are the most popular routes from Washington, D.C. to Southampton?

    When deciding which route to take from Washington, D.C. to Southampton consider Washington, D.C. Dulles Intl - Southampton Eastleigh, Baltimore/Washington - Southampton Eastleigh or Washington, D.C. Reagan-National - Southampton Eastleigh as they are the most popular.

  • Can I find deals for flights from Washington, D.C. to Southampton that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Southampton flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Southampton.

  • Can I find deals for business class flights from Washington, D.C. to Southampton?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to Southampton?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Southampton (average of $31). Flying from Washington, D.C. to Southampton in June is currently the most expensive (average of $720). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Washington, D.C. to Southampton

Discover the top airline that operate flights from Washington, D.C. to Southampton. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$789Average$1,079FlexibilityNo cancel feeOn-timeN/A

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