How long is the flight from Washington, D.C. Dulles Intl Airport to Southampton?

A quick flight from Washington, D.C. Dulles Intl Airport to Southampton can take about 10h 35m. Aer Lingus provides one of the quickest options available for as low as $952. Washington, D.C. Dulles Intl Airport and Southampton are separated by a distance of 3639 mi.

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

Currently priced at $1,064, Aer Lingus will fly you from Washington, D.C. Dulles Intl Airport to Southampton and back. In addition to Aer Lingus, many other airlines offer competitively priced options for your trip.

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.

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).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Southampton as you normally would.

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Southampton flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Southampton flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.

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. 1 airline has flights to Southampton Eastleigh from Washington, D.C. Dulles Intl on a regular basis.

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.

$411+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Southampton

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Cheap flight deals from Dulles Intl to Southampton

Cheapest

Best

Last-minute

One-way

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 October 20, 2026.

Mon 11/305:15 pm -

1 stop10h 35m

Mon 12/77:25 pm -

2 stops24h 15m

Deal found 10/16

$811

Mon 11/305:15 pm -

1 stop10h 35m

Sun 12/64:05 pm -

2 stops29h 15m

Deal found 10/15

$816

Thu 12/37:40 pm -

2 stops18h 50m

Thu 12/108:00 pm -

3 stops29h 30m

Deal found 10/19

$903

Wed 12/28:50 pm -

1 stop10h 05m

Wed 12/99:20 am -

1 stop15h 00m

Deal found 10/18

$908

Wed 12/29:05 am -

3 stops29h 25m

Wed 12/98:00 pm -

3 stops29h 23m

Deal found 10/18

$937

Mon 11/305:15 pm -

1 stop10h 35m

Sun 12/69:20 am -

1 stop11h 25m

Deal found 10/15

$952

Mon 11/308:50 pm -

1 stop17h 40m

Mon 12/712:25 pm -

1 stop11h 55m

Deal found 10/16

$954

Thu 12/35:15 pm -

1 stop10h 35m

Thu 12/1012:25 pm -

1 stop11h 55m

Deal found 10/19

$967

Best flights from Dulles Intl to Southampton
Discover carefully curated flight deals from Dulles Intl to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.

Mon 11/305:15 pm -

1 stop10h 35m

Sun 12/64:05 pm -

2 stops29h 15m

Deal found 10/15

$816

Mon 11/305:15 pm -

1 stop10h 35m

Sun 12/69:20 am -

1 stop11h 25m

Deal found 10/15

$952

Wed 12/212:34 pm -

2 stops14h 36m

Wed 12/98:40 am -

2 stops19h 43m

Deal found 10/17

$1,198

Sun 11/295:35 pm -

1 stop9h 35m

Sun 12/69:30 am -

1 stop11h 10m

Deal found 10/19

$1,473

Tue 12/225:45 pm -

1 stop9h 25m

Fri 1/18:40 am -

1 stop12h 15m

Deal found 10/18

$1,648

Mon 11/308:50 pm -

1 stop17h 40m

Mon 12/712:25 pm -

1 stop11h 55m

Deal found 10/16

$954

Thu 12/35:25 pm -

2 stops14h 30m

Thu 12/109:20 am -

1 stop15h 00m

Deal found 10/19

$1,006

Wed 12/27:40 pm -

2 stops18h 50m

Wed 12/99:15 am -

2 stops15h 05m

Deal found 10/18

$1,123

Fri 12/47:40 pm -

3 stops35h 25m

Fri 12/118:00 pm -

3 stops28h 05m

Deal found 10/20

$1,232

Wed 12/236:20 pm -

1 stop17h 45m

Thu 12/315:30 pm -

1 stop27h 25m

Deal found 10/18

$1,648

Sun 11/85:15 pm -

1 stop10h 35m

Fri 11/208:00 pm -

1 stop24h 45m

Deal found 10/16

$1,559

Last-minute flights from Dulles Intl to Southampton
Discover last-minute flight deals from Dulles Intl to Southampton. Data last updated October 20, 2026 and is based on user searches.

Mon 11/25:15 pm -

1 stop10h 35m

Thu 11/59:20 am -

1 stop11h 25m

Deal found 10/19

$1,067

Mon 11/27:40 pm -

2 stops18h 50m

Thu 11/58:00 pm -

2 stops29h 30m

Deal found 10/19

$1,069

Mon 11/305:15 pm -

1 stop10h 35m

Mon 12/77:25 pm -

2 stops24h 15m

Deal found 10/16

$811

Mon 11/305:15 pm -

1 stop10h 35m

Sun 12/64:05 pm -

2 stops29h 15m

Deal found 10/15

$816

Mon 11/305:15 pm -

1 stop10h 35m

Sun 12/69:20 am -

1 stop11h 25m

Deal found 10/15

$952

Mon 11/308:50 pm -

1 stop17h 40m

Mon 12/712:25 pm -

1 stop11h 55m

Deal found 10/16

$954

One-way flights from Dulles Intl to Southampton
Search for one-way flight options from Dulles Intl to Southampton. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.

Wed 11/188:50 pm -

1 stop10h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/18

$411

Wed 11/1811:20 am -

3 stops24h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/18

$423

Tue 10/279:50 pm -

1 stop31h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/19

$762

Mon 10/269:50 pm -

1 stop31h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/19

$791

Tue 12/298:50 pm -

1 stop31h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/15

$802

Tue 12/225:45 pm -

1 stop9h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/18

$933

Wed 12/2310:43 am -

2 stops16h 27m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/18

$937

Thu 11/198:50 pm -

1 stop30h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/19

$4,927

Find flight deals from Dulles Intl to Southampton

Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Round-trip from	$811 (Kiwi.com)
One-way from	$381 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$871

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Southampton Eastleigh flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Southampton Eastleigh flights.

Search Deals

From Washington, D.C. Dulles Intl to Southampton Eastleigh

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Southampton Eastleigh

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($180 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Wed 11/18

11:20 am-4:20 pm

3 stops24h 00m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$423

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Tue 10/27

9:50 pm-8:50 am

1 stop31h 00m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$762

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Mon 10/26

9:50 pm-8:50 am

1 stop31h 00m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$797

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Tue 12/29

8:50 pm-8:50 am

1 stop31h 00m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$802

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Mon 11/30

5:15 pm-8:50 am

1 stop10h 35m

Southampton Eastleigh

Sun 12/6

4:05 pm-4:20 pm

2 stops29h 15m

$816

Quickest round-trip

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Wed 12/23

6:20 pm-5:05 pm

1 stop17h 45m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$933

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Mon 11/30

5:15 pm-8:50 am

1 stop10h 35m

Southampton Eastleigh

Sun 12/6

9:20 am-3:45 pm

1 stop11h 25m

$952

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Mon 11/30

8:50 pm-7:30 pm

1 stop17h 40m

Southampton Eastleigh

Mon 12/7

12:25 pm-7:20 pm

1 stop11h 55m

$954

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Thu 12/3

5:25 pm-12:55 pm

2 stops14h 30m

Southampton Eastleigh

Thu 12/10

9:20 am-7:20 pm

1 stop15h 00m

$1,006

Washington, D.C.Southampton

IAD Washington, D.C. Dulles Intl - SOU Southampton Eastleigh

IADSOU

Washington, D.C. Dulles Intl

Tue 12/22

4:50 pm-5:05 pm

2 stops19h 15m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$1,073

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/18

Showing 1-10 of 18 resultsSorted by cheapest first

Compare providers for flights from Dulles Intl to Southampton

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 October.

Provider	Price Accuracy	Trust Score*
Ovago	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Southampton flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.

IAD-SOU

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.

Reviews of airlines servicing Southampton

See what other customers who have flown with Aer Lingus from Washington, D.C. Dulles Intl Airport to Southampton have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.3

Good

1,846 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Aer Lingus

7.3

Good

1,846 reviews

Aer Lingus

7.3

Good

1,846 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2025

DUB - EDI

Related info for your journey

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. 1 airline has flights to Southampton Eastleigh from Washington, D.C. Dulles Intl on a regular basis.
How long is the flight from Washington, D.C. Dulles Intl Airport to Southampton?
A quick flight from Washington, D.C. Dulles Intl Airport to Southampton can take about 10h 35m. Aer Lingus provides one of the quickest options available for as low as $952. Washington, D.C. Dulles Intl Airport and Southampton are separated by a distance of 3639 mi.
What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Southampton round-trip?
Currently priced at $1,064, Aer Lingus will fly you from Washington, D.C. Dulles Intl Airport to Southampton and back. In addition to Aer Lingus, many other airlines offer competitively priced options for your trip.
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.

See more FAQs

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Alternative routes for Dulles Intl to Southampton

Top airline flying from Dulles Intl to Southampton

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest$1,064	Average$1,080	FlexibilityNo cancel fee	On-timeN/A

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$411+ Cheap flights from Dulles Intl (IAD) 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Southampton with Cheapflights

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Cheap flight deals from Dulles Intl to Southampton

Cheapest flights from Dulles Intl to SouthamptonExplore 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 October 20, 2026.

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 October 20, 2026.

Best flights from Dulles Intl to SouthamptonDiscover carefully curated flight deals from Dulles Intl to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.

Discover carefully curated flight deals from Dulles Intl to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.

Last-minute flights from Dulles Intl to SouthamptonDiscover last-minute flight deals from Dulles Intl to Southampton. Data last updated October 20, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Southampton. Data last updated October 20, 2026 and is based on user searches.

One-way flights from Dulles Intl to SouthamptonSearch for one-way flight options from Dulles Intl to Southampton. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.

Search for one-way flight options from Dulles Intl to Southampton. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.

Find flight deals from Dulles Intl to Southampton

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Southampton that are best for you.

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 October.

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.

Reviews of airlines servicing Southampton

See what other customers who have flown with Aer Lingus from Washington, D.C. Dulles Intl Airport to Southampton have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Washington, D.C. Dulles Intl Airport to Southampton?

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

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

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

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

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.

Alternative routes for Dulles Intl to Southampton

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Southampton by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Dulles Intl to Southampton by cabin class

Find flights from Dulles Intl to Southampton, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dulles Intl and Southampton flights

Browse other Dulles Intl and Southampton flight options. Last updated on October 20, 2026.

Other flights from Dulles Intl

Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on October 20, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Southampton

Explore flights to Southampton departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 20, 2026.

Top airline flying from Dulles Intl to Southampton

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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 October 20, 2026.

Best flights from Dulles Intl to Southampton
Discover carefully curated flight deals from Dulles Intl to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 20, 2026.

Last-minute flights from Dulles Intl to Southampton
Discover last-minute flight deals from Dulles Intl to Southampton. Data last updated October 20, 2026 and is based on user searches.

One-way flights from Dulles Intl to Southampton
Search for one-way flight options from Dulles Intl to Southampton. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.