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Cheap flights from Southampton to Washington, D.C. from $726

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Southampton to Washington, D.C. departing on 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Aer Lingus Logo
9:30 am - 7:30 pmSOU-IAD
15h 00m1 stop
Aer Lingus Logo
9:00 pm - 7:40 pmIAD-SOU
17h 40m1 stop
$726Aer Lingus
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Sat, Dec 6 - Sat, Dec 13
Virgin Atlantic Logo
8:40 am - 4:05 pmSOU-IAD
12h 25m1 stop
Virgin Atlantic Logo
6:05 pm - 8:50 amIAD-SOU
9h 45m1 stop
$813Virgin Atlantic
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Fri, Dec 5 - Fri, Dec 12
Virgin Atlantic Logo
8:40 am - 12:12 amSOU-IAD
20h 32m2 stops
Virgin Atlantic Logo
6:05 pm - 8:50 amIAD-SOU
9h 45m1 stop
$819Virgin Atlantic
Find Deal
Fri, Dec 5 - Fri, Dec 12
Virgin Atlantic Logo
5:35 pm - 9:13 pmSOU-IAD
32h 38m2 stops
Virgin Atlantic Logo
7:59 pm - 5:00 pmIAD-SOU
40h 01m2 stops
$947Virgin Atlantic
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Wed, Apr 1 - Sun, Apr 5
Delta Logo
5:35 pm - 3:35 pmSOU-IAD
27h 00m1 stop
Delta Logo
5:50 pm - 8:50 amIAD-SOU
10h 00m1 stop
$982Delta
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Wed, Apr 1 - Sun, Apr 5
Delta Logo
5:35 pm - 3:35 pmSOU-IAD
27h 00m1 stop
Delta Logo
5:50 pm - 5:00 pmIAD-SOU
18h 10m1 stop
$1,003Delta
Find Deal
Wed, Apr 1 - Sun, Apr 5
Delta Logo
9:20 am - 3:35 pmSOU-IAD
11h 15m1 stop
Delta Logo
5:50 pm - 8:50 amIAD-SOU
10h 00m1 stop
$1,005Delta
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Wed, Apr 1 - Sun, Apr 5
Virgin Atlantic Logo
9:20 am - 9:11 amSOU-IAD
28h 51m2 stops
Virgin Atlantic Logo
7:59 pm - 8:50 amIAD-SOU
31h 51m2 stops
$1,008Virgin Atlantic
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Wed, Apr 1 - Sun, Apr 5
Multiple Airlines Logo
9:30 am - 7:30 pmSOU-IAD
15h 00m2 stops
Multiple Airlines Logo
9:45 pm - 8:45 amIAD-SOU
30h 00m2 stops
$1,062Multiple Airlines
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Sat, Dec 6 - Sat, Dec 13
Multiple Airlines Logo
8:10 pm - 3:35 pmSOU-IAD
24h 25m2 stops
Multiple Airlines Logo
5:05 pm - 12:05 pmIAD-SOU
14h 00m2 stops
$1,104Multiple Airlines
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Fri, Dec 5 - Fri, Dec 12

Virgin Atlantic flights from Southampton to Washington, D.C. Dulles Intl Airport

Our best Virgin Atlantic deals on Southampton to Washington, D.C. Dulles Intl Airport flight tickets
Virgin Atlantic
Dec 5
SOU8:40 amSouthampton Eastleigh
12h 25m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
Dec 12
IAD6:05 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
SOU8:50 amSouthampton Eastleigh
$813
Find similar
Virgin Atlantic
Dec 5
SOU8:40 amSouthampton Eastleigh
20h 32m
2 stops
IAD12:12 amWashington, D.C. Dulles Intl
Dec 12
IAD6:05 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
SOU8:50 amSouthampton Eastleigh
$819
Find similar
Virgin Atlantic
Apr 1
SOU5:35 pmSouthampton Eastleigh
32h 38m
2 stops
IAD9:13 pmWashington, D.C. Dulles Intl
Apr 5
IAD7:59 pmWashington, D.C. Dulles Intl
40h 01m
2 stops
SOU5:00 pmSouthampton Eastleigh
$947
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Delta flights from Southampton to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Southampton to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Apr 1
SOU5:35 pmSouthampton Eastleigh
27h 00m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Apr 5
IAD5:50 pmWashington, D.C. Dulles Intl
10h 00m
1 stop
SOU8:50 amSouthampton Eastleigh
$982
Find similar
Delta
Apr 1
SOU5:35 pmSouthampton Eastleigh
27h 00m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Apr 5
IAD5:50 pmWashington, D.C. Dulles Intl
18h 10m
1 stop
SOU5:00 pmSouthampton Eastleigh
$1,003
Find similar
Delta
Apr 1
SOU9:20 amSouthampton Eastleigh
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Apr 5
IAD5:50 pmWashington, D.C. Dulles Intl
10h 00m
1 stop
SOU8:50 amSouthampton Eastleigh
$1,005
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Southampton to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated October 23, 2025.
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

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 12/6

9:30 am-7:30 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Sat 12/13

9:00 pm-7:40 pm

1 stop17h 40m

$726

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 12/5

8:40 am-4:05 pm

1 stop12h 25m

Washington, D.C. Dulles Intl

Fri 12/12

6:05 pm-8:50 am

1 stop9h 45m

$813

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 12/5

8:40 am-12:12 am

2 stops20h 32m

Washington, D.C. Dulles Intl

Fri 12/12

6:05 pm-8:50 am

1 stop9h 45m

$819

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/1

5:35 pm-9:13 pm

2 stops32h 38m

Washington, D.C. Dulles Intl

Sun 4/5

7:59 pm-5:00 pm

2 stops40h 01m

$947

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/1

5:35 pm-3:35 pm

1 stop27h 00m

Washington, D.C. Dulles Intl

Sun 4/5

5:50 pm-8:50 am

1 stop10h 00m

$982

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/1

5:35 pm-3:35 pm

1 stop27h 00m

Washington, D.C. Dulles Intl

Sun 4/5

5:50 pm-5:00 pm

1 stop18h 10m

$1,003

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/1

9:20 am-3:35 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Sun 4/5

5:50 pm-8:50 am

1 stop10h 00m

$1,005

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 4/1

9:20 am-9:11 am

2 stops28h 51m

Washington, D.C. Dulles Intl

Sun 4/5

7:59 pm-8:50 am

2 stops31h 51m

$1,008

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 12/6

9:30 am-7:30 pm

2 stops15h 00m

Washington, D.C. Dulles Intl

Sat 12/13

9:45 pm-8:45 am

2 stops30h 00m

$1,062

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 12/5

8:10 pm-3:35 pm

2 stops24h 25m

Washington, D.C. Dulles Intl

Fri 12/12

5:05 pm-12:05 pm

2 stops14h 00m

$1,104

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Southampton to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $790. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Southampton to Washington, D.C. Dulles Intl Airport for around $931.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Southampton in the evening is the least expensive time of day to depart. momondo users have found prices as low as $743 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $872 on average. Flights to Washington, D.C. Dulles Intl Airport from Southampton in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Southampton to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Southampton to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Southampton to Washington, D.C. Dulles Intl Airport (SOU to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Southampton to Washington, D.C. Dulles Intl Airport

Direct flights

None
There are no direct flights from Southampton to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Southampton to Washington, D.C. Dulles Intl Airport.
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  • How far is Southampton Eastleigh to Washington, D.C. Dulles Intl by plane?

    Southampton Eastleigh and Washington, D.C. Dulles Intl are 3637.8 mi apart from one another. Typically, this will take 11h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport are updated daily.

  • How old do you have to be to fly from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Southampton Eastleigh Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Gaithersburg
Sterling

Why use momondo?

Why should I use momondo to find a flight deal from Southampton to Washington, D.C.?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Southampton to Washington, D.C.. momondo saves you time and could save you money on your trip.

Can I find flights from Southampton to Washington, D.C. with flexible booking policies on momondo?

Yes. All flights to Washington, D.C. from Southampton on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Southampton to Washington, D.C.?

Once you have performed a search for Southampton to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Southampton to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Southampton to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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