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

There are many flights that can get you from Southampton to Washington, D.C. Dulles Intl Airport in 11h 25m. Fly via Delta or British Airways to get the fastest option. There are 3639 mi between Southampton and Washington, D.C. Dulles Intl Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

When flying from Southampton to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Southampton-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Southampton-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Southampton-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Southampton-Washington, D.C. Dulles Intl Airport 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 Southampton-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

If you book a flight to Washington, D.C. Dulles Intl from Southampton, you will be flying from Eastleigh, which is the city’s only airport. Southampton Eastleigh (SOU) is located 3.5 mi from the center of Southampton. There are 0 flights from Eastleigh to Washington, D.C. Dulles Intl per day from 0 different airlines.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Southampton to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$502+ Cheap Flights from Southampton to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Southampton to Dulles Intl

Cheapest

Best

Last-minute

One-way

Cheapest flights from Southampton to Dulles Intl
Explore the most affordable flight options available from Southampton to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Mon 11/2312:25 pm -

2 stops33h 35m

Mon 11/306:00 pm -

2 stops20h 30m

Deal found 10/26

$897

Fri 11/278:40 am -

1 stop12h 15m

Fri 12/47:39 pm -

2 stops16h 11m

Deal found 10/30

$927

Mon 11/238:40 am -

1 stop12h 15m

Mon 11/306:15 pm -

1 stop17h 50m

Deal found 10/26

$930

Sat 12/195:20 pm -

1 stop27h 20m

Sat 1/26:15 pm -

1 stop17h 35m

Deal found 10/28

$1,059

Thu 11/129:20 am -

1 stop11h 25m

Sun 11/155:15 pm -

1 stop10h 35m

Deal found 10/28

$1,061

Best flights from Southampton to Dulles Intl
Discover carefully curated flight deals from Southampton to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Mon 11/2312:25 pm -

2 stops33h 35m

Mon 11/306:00 pm -

2 stops20h 30m

Deal found 10/26

$897

Mon 11/238:40 am -

1 stop12h 15m

Mon 11/306:15 pm -

1 stop17h 50m

Deal found 10/26

$930

Thu 11/129:20 am -

1 stop11h 25m

Sun 11/155:15 pm -

1 stop10h 35m

Deal found 10/28

$1,061

Mon 11/239:20 am -

1 stop15h 00m

Thu 12/38:50 pm -

1 stop10h 05m

Deal found 10/28

$1,062

Sat 12/195:20 pm -

1 stop27h 20m

Sat 1/26:00 am -

2 stops21h 55m

Deal found 10/28

$1,120

Fri 11/279:20 am -

2 stops15h 35m

Fri 12/49:45 pm -

2 stops30h 00m

Deal found 10/30

$1,124

Last-minute flights from Southampton to Dulles Intl
Discover last-minute flight deals from Southampton to Dulles Intl. Data last updated October 30, 2026 and is based on user searches.

Thu 11/129:20 am -

1 stop11h 25m

Sun 11/155:15 pm -

1 stop10h 35m

Deal found 10/28

$1,061

Mon 11/2312:25 pm -

2 stops33h 35m

Mon 11/306:00 pm -

2 stops20h 30m

Deal found 10/26

$897

Mon 11/238:40 am -

1 stop12h 15m

Mon 11/306:15 pm -

1 stop17h 50m

Deal found 10/26

$930

Fri 11/278:40 am -

1 stop12h 15m

Fri 12/47:39 pm -

2 stops16h 11m

Deal found 10/30

$927

One-way flights from Southampton to Dulles Intl
Search for one-way flight options from Southampton to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.

Wed 11/188:00 pm -

3 stops51h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/29

$502

Thu 12/179:20 am -

2 stops38h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$505

Sun 12/207:30 pm -

3 stops48h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$508

Wed 12/169:20 am -

3 stops38h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$529

Fri 12/181:25 pm -

3 stops34h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$576

Thu 12/179:20 am -

1 stop15h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$596

Wed 12/169:20 am -

1 stop15h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/28

$611

Find flight deals from Southampton to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$897 (Mytrip)
One-way from	$502 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$669

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

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

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($72 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 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 Southampton to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Thu 12/17

9:20 am-7:05 pm

2 stops38h 45m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$505

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Thu 12/17

9:20 am-7:20 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$596

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Wed 12/16

9:20 am-7:20 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$611

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Fri 12/18

9:20 am-7:20 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$621

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Mon 11/23

9:20 am-7:20 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$630

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Tue 4/6

9:20 am-7:15 pm

1 stop14h 55m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$689

Quickest round-trip

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Fri 3/26

9:20 am-4:45 pm

1 stop11h 25m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$750

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Mon 11/23

12:25 pm-5:00 pm

2 stops33h 35m

Washington, D.C. Dulles Intl

Mon 11/30

6:00 pm-7:30 pm

2 stops20h 30m

$897

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Mon 11/23

8:40 am-3:55 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

Mon 11/30

6:15 pm-5:05 pm

1 stop17h 50m

$930

SouthamptonWashington, D.C.

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

SOUIAD

Southampton Eastleigh

Thu 11/12

9:20 am-3:45 pm

1 stop11h 25m

Washington, D.C. Dulles Intl

Sun 11/15

5:15 pm-8:50 am

1 stop10h 35m

$1,061

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 13 resultsSorted by cheapest first

Most accurate provider: When it comes to deals on Southampton-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Southampton-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Southampton-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Southampton-Washington, D.C. Dulles Intl Airport 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 Southampton-Washington, D.C. Dulles Intl Airport 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 Southampton to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Southampton with our price prediction graph.

SOU-IAD

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.

Related info for your journey

What airport do you fly from for flights from Southampton to Washington, D.C. Dulles Intl?
If you book a flight to Washington, D.C. Dulles Intl from Southampton, you will be flying from Eastleigh, which is the city’s only airport. Southampton Eastleigh (SOU) is located 3.5 mi from the center of Southampton. There are 0 flights from Eastleigh to Washington, D.C. Dulles Intl per day from 0 different airlines.
How long is the flight from Southampton to Washington, D.C. Dulles Intl Airport?
There are many flights that can get you from Southampton to Washington, D.C. Dulles Intl Airport in 11h 25m. Fly via Delta or British Airways to get the fastest option. There are 3639 mi between Southampton and Washington, D.C. Dulles Intl Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Can I find deals for flights from Southampton to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Southampton to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Southampton to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Dulles Intl.
Can I find deals for business class flights from Southampton to Dulles Intl?
Yes. Cheapflights offers flight deals from Southampton to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$502+ Cheap flights from Southampton (SOU) to Dulles Intl (IAD)

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.

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Cheap flight deals from Southampton to Dulles Intl

Cheapest flights from Southampton to Dulles IntlExplore the most affordable flight options available from Southampton to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Explore the most affordable flight options available from Southampton to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from Southampton to Dulles IntlDiscover carefully curated flight deals from Southampton to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Discover carefully curated flight deals from Southampton to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Last-minute flights from Southampton to Dulles IntlDiscover last-minute flight deals from Southampton to Dulles Intl. Data last updated October 30, 2026 and is based on user searches.

Discover last-minute flight deals from Southampton to Dulles Intl. Data last updated October 30, 2026 and is based on user searches.

One-way flights from Southampton to Dulles IntlSearch for one-way flight options from Southampton to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.

Search for one-way flight options from Southampton to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.

Find flight deals from Southampton to Dulles Intl

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

Best time to book a flight from Southampton to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Southampton with our price prediction graph.

Related info for your journey

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

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

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

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Southampton to Dulles Intl

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Complete your trip

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

Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.

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

Southampton and Dulles Intl flights

Browse other Southampton and Dulles Intl flight options. Last updated on October 30, 2026.

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Cheapest flights from Southampton to Dulles Intl
Explore the most affordable flight options available from Southampton to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from Southampton to Dulles Intl
Discover carefully curated flight deals from Southampton to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Last-minute flights from Southampton to Dulles Intl
Discover last-minute flight deals from Southampton to Dulles Intl. Data last updated October 30, 2026 and is based on user searches.

One-way flights from Southampton to Dulles Intl
Search for one-way flight options from Southampton to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.