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Cheap flights from District of Columbia to London from $343

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to London departing on 9/8. 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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0 bags

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Cheap round-trip flights

Aer Lingus Logo
5:20 pm - 8:40 amIAD-SOU
10h 20m1 stop
Aer Lingus Logo
9:10 am - 7:30 pmSOU-IAD
15h 20m1 stop
$680Aer Lingus
Find Deal
Wed, Sep 24 - Wed, Oct 1
Aer Lingus Logo
5:20 pm - 8:40 amIAD-SOU
10h 20m1 stop
Aer Lingus Logo
9:10 am - 7:30 pmSOU-IAD
15h 20m1 stop
$852Aer Lingus
Find Deal
Wed, Sep 10 - Wed, Sep 24
Logo
5:50 pm - 6:55 pmIAD-SOU
20h 05m2 stops
Logo
8:00 pm - 3:20 pmSOU-IAD
24h 20m2 stops
$885
Find Deal
Thu, Sep 25 - Thu, Oct 2
Delta Logo
5:25 pm - 8:50 amIAD-SOU
10h 25m1 stop
Delta Logo
8:40 am - 4:05 pmSOU-IAD
12h 25m1 stop
$920Delta
Find Deal
Mon, Sep 1 - Fri, Dec 5
Delta Logo
3:26 pm - 8:45 amIAD-SOU
36h 19m2 stops
Delta Logo
8:40 am - 4:05 pmSOU-IAD
12h 25m1 stop
$925Delta
Find Deal
Mon, Sep 1 - Fri, Dec 5
KLM Logo
1:20 pm - 8:45 amDCA-SOU
14h 25m2 stops
KLM Logo
9:20 am - 8:42 pmSOU-DCA
16h 22m2 stops
$930KLM
Find Deal
Wed, Sep 24 - Wed, Oct 1
KLM Logo
1:20 pm - 8:45 amDCA-SOU
14h 25m2 stops
KLM Logo
9:20 am - 8:42 pmSOU-DCA
16h 22m2 stops
$935KLM
Find Deal
Thu, Sep 25 - Thu, Oct 2
Logo
8:30 pm - 8:40 amIAD-SOU
31h 10m3 stops
Logo
9:00 am - 10:10 pmSOU-IAD
18h 10m2 stops
$979
Find Deal
Wed, Sep 24 - Wed, Oct 1
British Airways Logo
9:45 pm - 4:00 pmIAD-SOU
13h 15m2 stops
British Airways Logo
9:30 am - 7:30 pmSOU-IAD
15h 00m1 stop
$2,079British Airways
Find Deal
Tue, Nov 4 - Tue, Nov 18
British Airways Logo
7:25 pm - 4:00 pmIAD-SOU
15h 35m2 stops
British Airways Logo
9:10 am - 3:50 pmSOU-IAD
11h 40m1 stop
$2,081British Airways
Find Deal
Wed, Oct 8 - Tue, Oct 14

Aer Lingus flights from District of Columbia to Southampton

Our best Aer Lingus deals on District of Columbia to Southampton flight tickets
Aer Lingus
Sep 24
IAD5:20 pmWashington, D.C. Dulles Intl
10h 20m
1 stop
SOU8:40 amSouthampton Eastleigh
Oct 1
SOU9:10 amSouthampton Eastleigh
15h 20m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$680
Find similar
Aer Lingus
Sep 10
IAD5:20 pmWashington, D.C. Dulles Intl
10h 20m
1 stop
SOU8:40 amSouthampton Eastleigh
Sep 24
SOU9:10 amSouthampton Eastleigh
15h 20m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$852
Find similar
Aer Lingus
Sep 10
IAD5:20 pmWashington, D.C. Dulles Intl
10h 20m
1 stop
SOU8:40 amSouthampton Eastleigh
Sep 24
SOU9:10 amSouthampton Eastleigh
11h 40m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$854
Find similar

Delta flights from District of Columbia to Southampton

Our best Delta deals on District of Columbia to Southampton flight tickets
Delta
Sep 1
IAD5:25 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
SOU8:50 amSouthampton Eastleigh
Dec 5
SOU8:40 amSouthampton Eastleigh
12h 25m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$920
Find similar
Delta
Sep 1
IAD3:26 pmWashington, D.C. Dulles Intl
36h 19m
2 stops
SOU8:45 amSouthampton Eastleigh
Dec 5
SOU8:40 amSouthampton Eastleigh
12h 25m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$925
Find similar
Delta
Sep 1
IAD5:25 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
SOU8:50 amSouthampton Eastleigh
Dec 2
SOU5:30 pmSouthampton Eastleigh
30h 41m
2 stops
IAD7:11 pmWashington, D.C. Dulles Intl
$931
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia to Southampton 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 August 12, 2025.
Use the filters below to find and compare flights from District of Columbia to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 9/24

5:20 pm-8:40 am

1 stop10h 20m

Southampton Eastleigh

Wed 10/1

9:10 am-7:30 pm

1 stop15h 20m

$680

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 9/10

5:20 pm-8:40 am

1 stop10h 20m

Southampton Eastleigh

Wed 9/24

9:10 am-7:30 pm

1 stop15h 20m

$852

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Thu 9/25

5:50 pm-6:55 pm

2 stops20h 05m

Southampton Eastleigh

Thu 10/2

8:00 pm-3:20 pm

2 stops24h 20m

$885

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 9/1

5:25 pm-8:50 am

1 stop10h 25m

Southampton Eastleigh

Fri 12/5

8:40 am-4:05 pm

1 stop12h 25m

$920

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Mon 9/1

3:26 pm-8:45 am

2 stops36h 19m

Southampton Eastleigh

Fri 12/5

8:40 am-4:05 pm

1 stop12h 25m

$925

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Wed 9/24

1:20 pm-8:45 am

2 stops14h 25m

Southampton Eastleigh

Wed 10/1

9:20 am-8:42 pm

2 stops16h 22m

$930

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Thu 9/25

1:20 pm-8:45 am

2 stops14h 25m

Southampton Eastleigh

Thu 10/2

9:20 am-8:42 pm

2 stops16h 22m

$935

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 9/24

8:30 pm-8:40 am

3 stops31h 10m

Southampton Eastleigh

Wed 10/1

9:00 am-10:10 pm

2 stops18h 10m

$979

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 11/4

9:45 pm-4:00 pm

2 stops13h 15m

Southampton Eastleigh

Tue 11/18

9:30 am-7:30 pm

1 stop15h 00m

$2,079

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 10/8

7:25 pm-4:00 pm

2 stops15h 35m

Southampton Eastleigh

Tue 10/14

9:10 am-3:50 pm

1 stop11h 40m

$2,081

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from District of Columbia to Southampton

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 Southampton?

On average, the least expensive day to fly to Southampton from District of Columbia is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $859. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from District of Columbia to Southampton for around $1,103.

What is the cheapest time of day to depart on your flight to Southampton?

Flying to Southampton from District of Columbia in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $936 when looking at flights departing in the afternoon. Flights to Southampton are more costly in the morning, with an average ticket price of $1,201. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap District of Columbia to Southampton flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Southampton

Best Price Found

$343

Fastest flight time

10h 20m

Direct flights

None

Airports in Southampton

1 airport
The best one-way flight to Southampton from District of Columbia in the past 72 hours is $343. The best round-trip flight deal from District of Columbia to Southampton found on momondo in the last 72 hours is $680.
The fastest flight from District of Columbia to Southampton takes 10h 20m
There are no direct flights from District of Columbia to Southampton. Popular non-direct routes for this connection are Washington, D.C. Dulles Intl Airport - Southampton Eastleigh Airport and Washington, D.C. Reagan-National Airport - Southampton Eastleigh Airport.
There is 1 airport near Southampton: Southampton Eastleigh (SOU)
Search flight deals

  • When did momondo last update prices for flights from District of Columbia to Southampton Eastleigh Airport?

    Prices for flights from District of Columbia to Southampton Eastleigh Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from District of Columbia to Southampton Eastleigh Airport?

  • How old do you have to be to fly from District of Columbia to Southampton Eastleigh 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 District of Columbia to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The required travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from District of Columbia to Southampton

Compare and see reviews for airlines that fly from District of Columbia to Southampton with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom $677Free CancellationRating
7.1
1,208 reviews
Search Aer Lingus flights
DeltaPriceFrom $778Free CancellationRating
8.0
7,978 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Southampton?

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

Can I find flights from District of Columbia to Southampton with flexible booking policies on momondo?

momondo does allow users to show only those flights to Southampton from District of Columbia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from District of Columbia to Southampton?

momondo provides multiple filters to help you find the best flight to Southampton from District of Columbia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from District of Columbia to Southampton right now. Can momondo alert me if prices change?

If you are not ready to book a flight from District of Columbia to Southampton now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Southampton and let you know when they change.

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