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$311+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOU
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
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 December 8, 2025.

This KAYAK deal was found by Cheapflights users on 12/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:00 pmIAD - SOU
1 stop9h 55mAer Lingus
Sun 12/148:10 pmSOU - IAD
1 stop24h 25mAer Lingus
Deal found 12/7$1,163
This KAYAK deal was found by Cheapflights users on 12/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:00 pmIAD - SOU
1 stop9h 55mAer Lingus
Sun 12/148:10 pmSOU - IAD
1 stop24h 25mAer Lingus
Deal found 12/7$1,170
This KAYAK deal was found by Cheapflights users on 12/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:00 pmIAD - SOU
1 stop13h 35mAer Lingus
Fri 12/128:10 pmSOU - IAD
1 stop24h 25mAer Lingus
Deal found 12/7$1,269
This KAYAK deal was found by Cheapflights users on 12/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/169:00 pmIAD - SOU
1 stop9h 55mAer Lingus
Mon 12/224:05 pmSOU - IAD
1 stop28h 30mAer Lingus
Deal found 12/7$1,545
This KAYAK deal was found by Cheapflights users on 12/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:05 pmIAD - SOU
1 stop10h 40mAer Lingus
Fri 1/28:10 pmSOU - IAD
1 stop28h 20mAer Lingus
Deal found 12/7$2,257
This British Airways deal was found by Cheapflights users on 12/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/259:45 pmIAD - SOU
2 stops16h 45mBritish Airways
Wed 12/3112:25 pmSOU - IAD
1 stop12h 05mBritish Airways
Deal found 12/7$4,056
This British Airways deal was found by Cheapflights users on 12/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:00 pmIAD - SOU
1 stop13h 35mBritish Airways
Fri 12/128:40 amSOU - IAD
2 stops16h 15mBritish Airways
Deal found 12/7$4,075
This KAYAK deal was found by Cheapflights users on 12/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:05 pmIAD - SOU
1 stop13h 50mAer Lingus
Tue 12/308:10 pmSOU - IAD
1 stop24h 25mAer Lingus
Deal found 12/8$5,245
This British Airways deal was found by Cheapflights users on 12/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:00 pmIAD - SOU
1 stop17h 40mBritish Airways
Fri 1/27:55 pmSOU - IAD
2 stops29h 00mBritish Airways
Deal found 12/7$10,216
This British Airways deal was found by Cheapflights users on 12/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:20 pmIAD - SOU
2 stops14h 00mBritish Airways
Tue 12/3012:25 pmSOU - IAD
1 stop12h 05mBritish Airways
Deal found 12/8$17,625

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 December 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$763
(lastminute.com)

One-way from

$311
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$977
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. 6% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 8, 2025.
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

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 1/21

10:33 am-8:25 am

2 stops16h 52m

Southampton Eastleigh

Wed 1/28

9:25 am-12:41 am

2 stops20h 16m

$763

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 2/13

12:23 pm-8:45 am

2 stops15h 22m

Southampton Eastleigh

Tue 2/17

9:25 am-4:05 pm

1 stop11h 40m

$770

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 1/21

12:23 pm-8:25 am

2 stops15h 02m

Southampton Eastleigh

Wed 1/28

5:35 pm-4:05 pm

1 stop27h 30m

$770

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 1/21

11:45 am-8:25 am

2 stops15h 40m

Southampton Eastleigh

Wed 1/28

9:25 am-11:05 pm

2 stops18h 40m

$780

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 1/21

4:45 pm-5:05 pm

2 stops19h 20m

Southampton Eastleigh

Wed 1/28

9:25 am-12:41 am

2 stops20h 16m

$780

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Tue 1/20

1:40 pm-8:50 am

2 stops14h 10m

Southampton Eastleigh

Tue 1/27

9:25 am-10:57 pm

2 stops18h 32m

$780

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Wed 1/21

12:20 pm-8:25 am

2 stops15h 05m

Southampton Eastleigh

Wed 1/28

9:25 am-8:32 pm

2 stops16h 07m

$780

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Thu 4/30

10:30 am-4:50 pm

2 stops25h 20m

Southampton Eastleigh

Sat 5/9

5:20 pm-6:09 pm

2 stops29h 49m

$794

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Thu 4/30

10:30 am-4:50 pm

2 stops25h 20m

Southampton Eastleigh

Tue 5/12

9:05 am-12:15 am

2 stops20h 10m

$794

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Thu 4/30

10:30 am-4:50 pm

2 stops25h 20m

Southampton Eastleigh

Thu 5/7

9:05 am-8:50 pm

2 stops16h 45m

$794

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 41 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Southampton flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $725). 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.

What is the cheapest time of day to fly from WAS to SOU?

Find hourly flight availability from Washington, D.C. to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.

When flying from Washington, D.C. to Southampton, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 22% versus a flight in the morning.

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. 2 airlines have 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 15h 02m. Virgin Atlantic provides one of the quickest options available for as low as $770. Airlines will cover a distance of 3639 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. to Southampton round-trip?

    Cheapflights users have booked flights from Washington, D.C. to Southampton round-trip from $677. Another airline that can offer you cheap pricing is Delta.

  • 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 $725). 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

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Alternative routes for Washington, D.C. to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Reagan-National to Heathrow flights
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Reagan-National to Gatwick flights
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Reagan-National to Luton flights
Reagan-National to Edinburgh flights
Dulles Intl to Manchester flights
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Dulles Intl to Newcastle upon Tyne flights
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Reagan-National to Birmingham flights
Dulles Intl to Southampton flights
Dulles Intl to Liverpool flights
Dulles Intl to Southend flights
Reagan-National to Newcastle upon Tyne flights
Dulles Intl to Bristol flights
Reagan-National to Leeds flights
Reagan-National to Liverpool flights
Dulles Intl to Newquay flights
Reagan-National to Bristol flights
Reagan-National to Southampton flights
Reagan-National to Newquay flights
Dulles Intl to Exeter flights
Dulles Intl to East Midlands flights
Reagan-National to East Midlands flights
Dulles Intl to Doncaster flights
Dulles Intl to Bournemouth flights

Top 2 airlines flying from Washington, D.C. to Southampton

Discover the top 2 airlines 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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$677Average$900FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$785Average$1,119FlexibilityNo cancel feeOn-timeN/A

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