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$409+ Cheap flights from Dulles Intl (IAD) 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SOU
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Dulles Intl to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) 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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$801
(Delta)

One-way from

$491
(KLM)

Popular in

June

Cheapest in

November

Average price

$746
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Southampton Eastleigh flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Southampton Eastleigh flights.
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From Washington, D.C. Dulles Intl to Southampton Eastleigh
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One-way flight from Washington, D.C. Dulles Intl to Southampton Eastleigh
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Highest demand for flights based on searches. 24% potential increase in price ($299 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Dulles Intl to Southampton

Cheapest flights from Dulles Intl to Southampton
Explore the most affordable flight options available from Dulles Intl to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This KLM deal was found by Cheapflights users on 4/29. 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.
Sun 5/45:25 pmIAD - SOU
1 stop10h 20mKLM
Sun 5/119:20 amSOU - IAD
1 stop11h 15mKLM
Deal found 4/29$801
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:00 amIAD - SOU
2 stops21h 45mVirgin Atlantic
Sun 8/319:20 amSOU - IAD
1 stop11h 15mVirgin Atlantic
Deal found 4/29$805
This Delta deal was found by Cheapflights users on 4/29. 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 8/2212:00 pmIAD - SOU
2 stops15h 45mDelta
Sat 9/69:20 amSOU - IAD
1 stop11h 15mDelta
Deal found 4/29$905
This Gurufare deal was found by Cheapflights users on 4/29. 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.
Sat 9/205:20 pmIAD - SOU
1 stop10h 15mAer Lingus
Wed 10/19:10 amSOU - IAD
1 stop15h 20mAer Lingus
Deal found 4/29$915
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/116:00 amIAD - SOU
3 stops29h 35mMultiple Airlines
Wed 6/187:55 pmSOU - IAD
3 stops47h 24mMultiple Airlines
Deal found 4/28$1,260
This KAYAK deal was found by Cheapflights users on 4/29. 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.
Sat 11/88:45 pmIAD - SOU
1 stop13h 50mBritish Airways
Sat 11/153:40 pmSOU - IAD
2 stops33h 05mBritish Airways
Deal found 4/29$1,472

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl 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 April 29, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Southampton that are best for you.

Fly from

Dulles Intl

Fly to

Southampton

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 8/23

5:25 pm-8:45 am

1 stop10h 20m

Southampton Eastleigh

Sat 9/6

6:05 pm-3:35 pm

1 stop26h 30m

$801

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 8/24

6:00 am-8:45 am

2 stops21h 45m

Southampton Eastleigh

Sun 8/31

9:20 am-3:35 pm

1 stop11h 15m

$805

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 8/23

5:25 pm-8:45 am

1 stop10h 20m

Southampton Eastleigh

Sat 9/6

9:20 am-7:37 pm

2 stops15h 17m

$811

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 9/20

5:20 pm-8:35 am

1 stop10h 15m

Southampton Eastleigh

Wed 10/1

9:10 am-7:30 pm

1 stop15h 20m

$915

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 6/11

6:00 am-4:35 pm

3 stops29h 35m

Southampton Eastleigh

Wed 6/18

7:55 pm-2:19 pm

3 stops47h 24m

$1,260

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 6/22

8:25 pm-7:30 pm

1 stop18h 05m

Southampton Eastleigh

Mon 7/7

1:10 pm-3:55 pm

2 stops31h 45m

$1,979

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 8/23

11:15 pm-9:10 am

3 stops28h 55m

$409

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 8/23

5:25 pm-8:45 am

1 stop10h 20m

$491

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sat 7/26

12:12 pm-8:45 am

2 stops15h 33m

$496

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Fri 6/13

5:20 pm-8:40 am

1 stop10h 20m

$919

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Compare providers for flights from Dulles Intl 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 Dulles Intl to Southampton in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice 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. Dulles Intl Airport-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. Dulles Intl Airport-Southampton flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Southampton flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-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. Dulles Intl Airport-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 Dulles Intl to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Dulles Intl 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. Dulles Intl Airport to Southampton

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

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Southampton (average of $787). Flying from Washington, D.C. Dulles Intl Airport to Southampton in June is currently the most expensive (average of $1,308). 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 IAD to SOU?

Find hourly flight availability from Dulles Intl 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 April 29, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Southampton at noon. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the morning.

Rainfall in Southampton by month

Plan your trip to Southampton by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Southampton ranges from 1.0 - 3.0 inches per month. December is typically the wettest month, when rainfall can reach 3.0 in. July is typically the driest time to visit Southampton when rainfall is around 1.0 in.

Temperature in Southampton by month

Plan your trip to Southampton by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Southampton, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

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 April 29, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Virgin Atlantic from Washington, D.C. to Southampton to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.6
Okay
6,837 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl 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. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl 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. Dulles Intl per day. 3 airlines have flights to Southampton Eastleigh from Washington, D.C. Dulles Intl on a regular basis.

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

    Currently priced at $801, Delta will fly you from Washington, D.C. Dulles Intl Airport to Southampton and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and Aer Lingus - these airlines can fly you to your destination from $901 and $915, respectively. Delta is priced at 13% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Southampton one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Southampton are KLM ($491), Delta ($496), and Aer Lingus ($919).

  • Can I find deals for flights from Dulles Intl to Southampton that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Southampton flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Southampton?

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

  • Can I find deals for business class flights from Dulles Intl to Southampton?

    Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to Southampton?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Southampton (average of $787). Flying from Washington, D.C. Dulles Intl Airport to Southampton in June is currently the most expensive (average of $1,308). 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.

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Alternative routes for Dulles Intl to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
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Baltimore to Southend flights
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Top 3 airlines flying from Dulles Intl to Southampton

Discover the top 3 airlines that operate flights from Dulles Intl 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$646Average$900FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$721Average$1,206FlexibilityNo cancel feeOn-time75%
DeltaCheapest$729Average$1,058FlexibilityNo cancel feeOn-timeN/A

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