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$746+ Cheap flights from Washington, D.C. (WAS) to Southampton (SOU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOU
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheap 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$682
(Mytrip)

Popular in

June

Cheapest in

September

Average price

$667
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
Highest demand for flights based on searches. 11% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 14, 2025.

This Trip.com deal was found by Cheapflights users on 10/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:05 pmIAD - SOU
1 stop21h 35mAer Lingus
Thu 12/49:30 amSOU - IAD
1 stop15h 00mAer Lingus
Deal found 10/13$746
This Trip.com deal was found by Cheapflights users on 10/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 pmIAD - SOU
2 stops20h 40mMultiple Airlines
Thu 12/49:30 amSOU - IAD
2 stops36h 10mMultiple Airlines
Deal found 10/13$759
This Delta deal was found by Cheapflights users on 10/12. 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 11/136:05 pmIAD - SOU
1 stop17h 55mDelta
Sat 11/229:25 amSOU - IAD
1 stop11h 40mDelta
Deal found 10/12$761
This Delta deal was found by Cheapflights users on 10/12. 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 11/156:05 pmIAD - SOU
1 stop9h 45mDelta
Mon 11/248:40 amSOU - IAD
2 stops15h 28mDelta
Deal found 10/12$771
This Delta deal was found by Cheapflights users on 10/12. 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 11/1312:36 pmDCA - SOU
2 stops14h 29mDelta
Mon 11/248:40 amSOU - DCA
2 stops17h 01mDelta
Deal found 10/12$776
This Delta deal was found by Cheapflights users on 10/13. 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 11/812:09 pmIAD - SOU
2 stops15h 41mDelta
Sat 11/159:25 amSOU - IAD
2 stops18h 38mDelta
Deal found 10/13$776
This Delta deal was found by Cheapflights users on 10/13. 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 11/2612:37 pmIAD - SOU
2 stops14h 43mDelta
Wed 12/38:40 amSOU - IAD
1 stop12h 25mDelta
Deal found 10/13$806
This Delta deal was found by Cheapflights users on 10/13. 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 11/2612:39 pmDCA - SOU
2 stops14h 41mDelta
Wed 12/38:40 amSOU - DCA
2 stops17h 00mDelta
Deal found 10/13$816
This Delta deal was found by Cheapflights users on 10/13. 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 11/2712:36 pmIAD - SOU
2 stops14h 29mDelta
Tue 12/28:40 amSOU - IAD
2 stops15h 39mDelta
Deal found 10/13$827
This Delta deal was found by Cheapflights users on 10/12. 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 11/1312:36 pmIAD - SOU
2 stops14h 29mDelta
Mon 11/248:40 amSOU - IAD
1 stop12h 25mDelta
Deal found 10/12$831
This Delta deal was found by Cheapflights users on 10/12. 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 11/1312:36 pmIAD - SOU
2 stops14h 29mDelta
Sun 11/239:30 amSOU - IAD
2 stops14h 38mDelta
Deal found 10/12$841
This Delta deal was found by Cheapflights users on 10/13. 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 11/2612:37 pmIAD - SOU
2 stops14h 43mDelta
Tue 12/28:40 amSOU - IAD
2 stops15h 39mDelta
Deal found 10/13$866

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 October 14, 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

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 11/27

5:05 pm-7:40 pm

1 stop21h 35m

Southampton Eastleigh

Thu 12/4

9:30 am-7:30 pm

1 stop15h 00m

$746

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 11/14

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Mon 11/24

8:40 am-4:05 pm

1 stop12h 25m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 11/8

6:05 pm-8:50 am

1 stop9h 45m

Southampton Eastleigh

Sat 11/15

9:25 am-4:05 pm

1 stop11h 40m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 11/26

6:05 pm-5:25 pm

1 stop18h 20m

Southampton Eastleigh

Wed 12/3

8:40 am-4:05 pm

1 stop12h 25m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 11/3

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Wed 11/19

5:30 pm-4:05 pm

1 stop27h 35m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 11/27

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Tue 12/2

5:30 pm-4:05 pm

1 stop27h 35m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 11/7

6:05 pm-8:50 am

1 stop9h 45m

Southampton Eastleigh

Fri 11/14

8:40 am-4:05 pm

1 stop12h 25m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 11/25

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Tue 12/2

5:30 pm-4:05 pm

1 stop27h 35m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 11/13

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Sun 11/23

9:30 am-4:05 pm

1 stop11h 35m

$761

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 11/25

6:05 pm-5:00 pm

1 stop17h 55m

Southampton Eastleigh

Wed 12/3

8:40 am-4:05 pm

1 stop12h 25m

$761

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 28 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 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 $748). 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 October 14, 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 in the afternoon, which can drop the price by up to 17% versus a flight in the morning.

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southampton. Reviews last updated October 14, 2025.
Read reviews from past customers who have flown KLM and Aer Lingus from Washington, D.C. to Southampton. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,402 reviews

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.2

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,402 reviews
KLM
7.7
Good
1,402 reviews

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.2

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Aer Lingus
7.2
Good
1,335 reviews
KLM
7.7
Good
1,402 reviews

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.2

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 9h 45m. Aer Lingus provides one of the quickest options available for as low as $761. 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, Washington, D.C. Reagan-National - Southampton Eastleigh or Baltimore/Washington - 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 $748). 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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Dulles Intl to Newquay flights
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Reagan-National to Newquay flights
Reagan-National to Liverpool 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$677Average$900FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$785Average$1,119FlexibilityNo cancel feeOn-timeN/A

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