Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Southampton to Washington, D.C. from $1,122

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 2/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Southampton to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
4:05 pm - 3:35 pm
SOU
-
IAD
28h 30m1 stop
British Airways Logo
5:05 pm - 11:55 am
IAD
-
SOU
13h 50m1 stop
$1,122British Airways
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
8:10 pm - 3:35 pm
SOU
-
IAD
24h 25m1 stop
British Airways Logo
5:05 pm - 11:55 am
IAD
-
SOU
13h 50m1 stop
$1,123British Airways
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
8:40 am - 3:35 pm
SOU
-
IAD
35h 55m2 stops
British Airways Logo
5:05 pm - 11:55 am
IAD
-
SOU
13h 50m1 stop
$1,141British Airways
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
8:40 am - 3:35 pm
SOU
-
IAD
35h 55m2 stops
British Airways Logo
5:05 pm - 11:55 am
IAD
-
SOU
13h 50m1 stop
$1,142British Airways
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
8:40 am - 7:55 pm
SOU
-
IAD
16h 15m2 stops
British Airways Logo
9:45 pm - 8:00 pm
IAD
-
SOU
17h 15m2 stops
$1,178British Airways
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
8:40 am - 7:55 pm
SOU
-
IAD
16h 15m2 stops
British Airways Logo
5:05 pm - 4:00 pm
IAD
-
SOU
17h 55m2 stops
$1,180British Airways
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
8:40 am - 7:55 pm
SOU
-
IAD
16h 15m2 stops
British Airways Logo
5:05 pm - 3:35 pm
IAD
-
SOU
17h 30m1 stop
$1,231British Airways
Wed, Dec 24 - Thu, Jan 15
British Airways Logo
8:40 am - 7:55 pm
SOU
-
IAD
16h 15m2 stops
British Airways Logo
5:05 pm - 3:35 pm
IAD
-
SOU
17h 30m1 stop
$1,271British Airways
Wed, Dec 24 - Sat, Jan 17
Multiple Airlines Logo
9:10 am - 3:50 pm
SOU
-
IAD
11h 40m1 stop
Multiple Airlines Logo
8:25 pm - 4:35 pm
IAD
-
SOU
15h 10m1 stop
$1,332Multiple Airlines
Fri, Apr 24 - Fri, Apr 24
Multiple Airlines Logo
9:10 am - 3:50 pm
SOU
-
IAD
11h 40m1 stop
Multiple Airlines Logo
8:45 pm - 8:25 am
IAD
-
SOU
30h 40m3 stops
$1,427Multiple Airlines
Fri, Apr 24 - Fri, Apr 24

British Airways flights from Southampton to Washington, D.C. Dulles Intl Airport

Our best British Airways deals on Southampton to Washington, D.C. Dulles Intl Airport flight tickets
British Airways
Feb 5
SOU4:05 pmSouthampton Eastleigh
28h 30m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Feb 9
IAD5:05 pmWashington, D.C. Dulles Intl
13h 50m
1 stop
SOU11:55 amSouthampton Eastleigh
$1,122
Find similar
British Airways
Feb 5
SOU8:10 pmSouthampton Eastleigh
24h 25m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Feb 9
IAD5:05 pmWashington, D.C. Dulles Intl
13h 50m
1 stop
SOU11:55 amSouthampton Eastleigh
$1,123
Find similar
British Airways
Feb 5
SOU8:40 amSouthampton Eastleigh
35h 55m
2 stops
IAD3:35 pmWashington, D.C. Dulles Intl
Feb 9
IAD5:05 pmWashington, D.C. Dulles Intl
13h 50m
1 stop
SOU11:55 amSouthampton Eastleigh
$1,141
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 December 11, 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

Thu 2/5

4:05 pm-3:35 pm

1 stop28h 30m

Washington, D.C. Dulles Intl

Mon 2/9

5:05 pm-11:55 am

1 stop13h 50m

$1,122

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 2/5

8:10 pm-3:35 pm

1 stop24h 25m

Washington, D.C. Dulles Intl

Mon 2/9

5:05 pm-11:55 am

1 stop13h 50m

$1,123

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 2/5

8:40 am-3:35 pm

2 stops35h 55m

Washington, D.C. Dulles Intl

Mon 2/9

5:05 pm-11:55 am

1 stop13h 50m

$1,141

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 2/5

8:40 am-3:35 pm

2 stops35h 55m

Washington, D.C. Dulles Intl

Mon 2/9

5:05 pm-11:55 am

1 stop13h 50m

$1,142

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 2/5

8:40 am-7:55 pm

2 stops16h 15m

Washington, D.C. Dulles Intl

Mon 2/9

9:45 pm-8:00 pm

2 stops17h 15m

$1,178

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Thu 2/5

8:40 am-7:55 pm

2 stops16h 15m

Washington, D.C. Dulles Intl

Mon 2/9

5:05 pm-4:00 pm

2 stops17h 55m

$1,180

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 12/24

8:40 am-7:55 pm

2 stops16h 15m

Washington, D.C. Dulles Intl

Thu 1/15

5:05 pm-3:35 pm

1 stop17h 30m

$1,231

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 12/24

8:40 am-7:55 pm

2 stops16h 15m

Washington, D.C. Dulles Intl

Sat 1/17

5:05 pm-3:35 pm

1 stop17h 30m

$1,271

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 4/24

9:10 am-3:50 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Fri 4/24

8:25 pm-4:35 pm

1 stop15h 10m

$1,332

SouthamptonWashington, D.C.

SOU - IAD

SOUIAD

Southampton Eastleigh

Fri 4/24

9:10 am-3:50 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Fri 4/24

8:45 pm-8:25 am

3 stops30h 40m

$1,427

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Washington, D.C. from

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 $756. When flying out on a Monday, 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 $917.

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 at noon when prices are $852 on average. Flights to Washington, D.C. Dulles Intl Airport from Southampton at noon 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

Fastest flight time

12h 05m

Direct flights

None
The fastest flight from Southampton to Washington, D.C. Dulles Intl Airport takes 12h 05m
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.
Search flight deals

  • 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 12h 05m 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
Towson
Harpers Ferry
Rockville
Gaithersburg
Reston
Manassas
Sterling
Fairfax

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.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/10
Sat 1/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.