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 9h 25m. Aer Lingus provides one of the quickest options available for as low as $1,172. Washington, D.C. Dulles Intl Airport and Southampton are separated by a distance of 3639 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. 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.

$540+ 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 September 7, 2026.

Sun 10/256:15 pm -

1 stop10h 35m

Sun 11/19:20 am -

1 stop15h 00m

Deal found 9/3

$792

Sat 10/2411:25 am -

2 stops41h 25m

Sun 11/19:20 am -

1 stop11h 25m

Deal found 9/3

$885

Tue 10/209:05 pm -

1 stop17h 25m

Tue 10/279:20 am -

1 stop15h 00m

Deal found 9/5

$898

Sun 10/256:15 pm -

1 stop10h 35m

Sun 11/14:20 pm -

2 stops29h 00m

Deal found 9/3

$902

Sun 10/1811:20 pm -

2 stops32h 30m

Sun 10/259:20 am -

1 stop11h 25m

Deal found 9/3

$919

Tue 10/209:05 pm -

2 stops30h 30m

Tue 10/279:20 am -

1 stop11h 25m

Deal found 9/5

$1,001

Sun 10/185:15 pm -

1 stop18h 35m

Sun 10/259:20 am -

1 stop11h 25m

Deal found 9/3

$1,005

Thu 10/229:55 am -

2 stops25h 55m

Thu 10/299:20 am -

1 stop15h 00m

Deal found 9/7

$1,027

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 September 7, 2026.

Sun 10/256:15 pm -

1 stop10h 35m

Sun 11/19:20 am -

1 stop15h 00m

Deal found 9/3

$792

Sun 10/258:40 pm -

2 stops16h 35m

Sun 11/18:50 am -

3 stops35h 55m

Deal found 9/3

$1,129

Thu 10/225:30 pm -

1 stop18h 20m

Thu 10/298:40 am -

1 stop12h 05m

Deal found 9/7

$1,167

Thu 1/145:45 pm -

1 stop9h 25m

Mon 1/185:30 pm -

2 stops29h 00m

Deal found 9/7

$1,172

Fri 1/1511:05 am -

2 stops16h 50m

Mon 1/185:30 pm -

2 stops29h 00m

Deal found 9/7

$1,176

Sun 9/2711:44 am -

2 stops15h 51m

Sat 10/35:20 pm -

1 stop27h 15m

Deal found 9/4

$1,281

Tue 12/225:45 pm -

1 stop9h 25m

Fri 1/18:40 am -

1 stop12h 15m

Deal found 9/6

$1,411

Sun 12/207:45 pm -

2 stops31h 25m

Fri 1/18:40 am -

2 stops30h 08m

Deal found 9/6

$1,426

Mon 9/287:17 pm -

2 stops16h 33m

Fri 10/29:05 am -

1 stop11h 30m

Deal found 9/4

$1,459

Sun 9/278:08 am -

2 stops19h 27m

Tue 9/299:05 am -

1 stop11h 30m

Deal found 9/4

$1,459

Sun 9/2712:26 pm -

2 stops23h 24m

Thu 10/15:20 pm -

2 stops28h 10m

Deal found 9/4

$1,469

Thu 12/2410:43 am -

2 stops16h 27m

Sat 1/25:30 pm -

1 stop27h 15m

Deal found 9/6

$1,577

Last-minute flights from Dulles Intl to Southampton
Discover last-minute flight deals from Dulles Intl to Southampton. Data last updated September 7, 2026 and is based on user searches.

Sun 10/1811:20 pm -

2 stops32h 30m

Sun 10/259:20 am -

1 stop11h 25m

Deal found 9/3

$919

Sun 10/185:15 pm -

1 stop18h 35m

Sun 10/259:20 am -

1 stop11h 25m

Deal found 9/3

$1,005

Tue 10/209:05 pm -

1 stop17h 25m

Tue 10/279:20 am -

1 stop15h 00m

Deal found 9/5

$898

Tue 10/209:05 pm -

2 stops30h 30m

Tue 10/279:20 am -

1 stop11h 25m

Deal found 9/5

$1,001

Thu 10/229:55 am -

2 stops25h 55m

Thu 10/299:20 am -

1 stop15h 00m

Deal found 9/7

$1,027

Sat 10/2411:25 am -

2 stops41h 25m

Sun 11/19:20 am -

1 stop11h 25m

Deal found 9/3

$885

Sun 10/256:15 pm -

1 stop10h 35m

Sun 11/19:20 am -

1 stop15h 00m

Deal found 9/3

$792

Sun 10/256:15 pm -

1 stop10h 35m

Sun 11/14:20 pm -

2 stops29h 00m

Deal found 9/3

$902

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 September 7, 2026.

Sat 9/125:15 pm -

1 stop10h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/3

$540

Sat 10/35:30 pm -

1 stop10h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$584

Sat 9/125:30 pm -

1 stop10h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$683

Tue 9/299:05 pm -

1 stop30h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$766

Find flight deals from Dulles Intl to Southampton

Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Round-trip from	$792 (Kiwi.com)
One-way from	$540 (Cheapflightsfares)
Popular in	June
Cheapest in	January
Average price	$890

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. 18% potential increase in price ($195 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 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

Sat 9/12

5:15 pm-8:35 am

1 stop10h 20m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$540

Quickest round-trip

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Sat 10/3

5:30 pm-8:45 am

1 stop10h 15m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$584

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Sat 9/12

5:30 pm-8:45 am

1 stop10h 15m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$683

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Fri 10/2

5:30 pm-4:50 pm

1 stop18h 20m

Southampton Eastleigh

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$683

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Sun 10/25

6:15 pm-8:50 am

1 stop10h 35m

Southampton Eastleigh

Sun 11/1

9:20 am-7:20 pm

1 stop15h 00m

$792

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Sun 10/25

8:40 pm-5:15 pm

2 stops16h 35m

Southampton Eastleigh

Sun 11/1

8:50 am-3:45 pm

3 stops35h 55m

$1,129

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Thu 10/22

5:30 pm-4:50 pm

1 stop18h 20m

Southampton Eastleigh

Thu 10/29

8:40 am-4:45 pm

1 stop12h 05m

$1,167

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Thu 1/14

5:45 pm-8:10 am

1 stop9h 25m

Southampton Eastleigh

Mon 1/18

5:30 pm-5:30 pm

2 stops29h 00m

$1,172

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Fri 1/15

11:05 am-8:55 am

2 stops16h 50m

Southampton Eastleigh

Mon 1/18

5:30 pm-5:30 pm

2 stops29h 00m

$1,176

Washington, D.C.Southampton

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

IADSOU

Washington, D.C. Dulles Intl

Sun 9/27

11:44 am-8:35 am

2 stops15h 51m

Southampton Eastleigh

Sat 10/3

5:20 pm-3:35 pm

1 stop27h 15m

$1,281

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/4

Showing 1-10 of 16 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 September.

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

1,749 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

1,749 reviews

Aer Lingus

7.3

Good

1,749 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 9h 25m. Aer Lingus provides one of the quickest options available for as low as $1,172. Washington, D.C. Dulles Intl Airport and Southampton are separated by a distance of 3639 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. 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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$540+ 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 9/12. 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 September 7, 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 September 7, 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 September 7, 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 September 7, 2026.

Last-minute flights from Dulles Intl to SouthamptonDiscover last-minute flight deals from Dulles Intl to Southampton. Data last updated September 7, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Southampton. Data last updated September 7, 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 September 7, 2026.

Search for one-way flight options from Dulles Intl to Southampton. Find affordable one-way fares based on user searches. Data last updated September 7, 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 September.

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 September 7, 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 September 7, 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 September 7, 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 September 7, 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 September 7, 2026.

Last-minute flights from Dulles Intl to Southampton
Discover last-minute flight deals from Dulles Intl to Southampton. Data last updated September 7, 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 September 7, 2026.