WAS - SOU

$494 Find Cheap Flights from Washington, D.C. to Southampton

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Southampton departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Southampton

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Southampton, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Southampton, as well as popular online travel agencies
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Cheap Flights from Washington, D.C. to Southampton (WAS-SOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Southampton that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Southampton

Wed, Oct 1 - Sun, Oct 5
Multiple Airlines Logo
2:50 pm - 5:00 pmDCA-SOU
21h 10m2 stops
Multiple Airlines Logo
9:20 am - 10:11 pmSOU-DCA
17h 51m2 stops
$793Multiple Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 5
KLM Logo
5:25 pm - 5:00 pmIAD-SOU
18h 35m1 stop
KLM Logo
6:25 pm - 3:35 pmSOU-IAD
26h 10m1 stop
$795KLM
Find Deal
Sun, Sep 28 - Mon, Oct 13
Delta Logo
5:25 pm - 8:45 amIAD-SOU
10h 20m1 stop
Delta Logo
5:35 pm - 3:35 pmSOU-IAD
27h 00m1 stop
$812Delta
Find Deal
Wed, Oct 1 - Sun, Oct 5
Delta Logo
10:07 am - 8:45 amIAD-SOU
17h 38m2 stops
Delta Logo
6:25 pm - 3:35 pmSOU-IAD
26h 10m1 stop
$814Delta
Find Deal
Sun, Sep 28 - Mon, Oct 13
Delta Logo
5:00 pm - 8:45 amIAD-SOU
34h 45m2 stops
Delta Logo
5:35 pm - 3:35 pmSOU-IAD
27h 00m1 stop
$816Delta
Find Deal
Thu, Oct 9 - Fri, Oct 24
KLM Logo
5:25 pm - 8:45 amIAD-SOU
10h 20m1 stop
KLM Logo
9:20 am - 7:18 pmSOU-IAD
14h 58m2 stops
$947KLM
Find Deal
Sat, Nov 8 - Sat, Nov 15
Aer Lingus Logo
5:05 pm - 3:35 pmIAD-SOU
17h 30m1 stop
Aer Lingus Logo
9:30 am - 7:30 pmSOU-IAD
15h 00m1 stop
$977Aer Lingus
Find Deal
Fri, Mar 6 - Sat, Mar 21
Aer Lingus Logo
5:05 pm - 8:45 amIAD-SOU
10h 40m1 stop
Aer Lingus Logo
9:30 am - 4:35 pmSOU-IAD
35h 05m2 stops
$1,050Aer Lingus
Find Deal
Sat, Nov 8 - Sat, Nov 15
British Airways Logo
9:00 pm - 7:40 pmIAD-SOU
17h 40m1 stop
British Airways Logo
8:55 am - 3:35 pmSOU-IAD
35h 40m2 stops
$1,409British Airways
Find Deal
Sun, Dec 21 - Sun, Dec 28
British Airways Logo
5:05 pm - 8:45 amIAD-SOU
10h 40m1 stop
British Airways Logo
6:25 pm - 7:55 pmSOU-IAD
30h 30m3 stops
$1,994British Airways
Find Deal

Everything you should know

Top airlines
KLM
Cheapest • from $795 (round-trip)
KLM
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$793
Multiple Airlines
Wed 10/1Sun 10/5
DCA - SOU • 2 stops
Cheapest one-way
$494
KLM
Fri 9/26
IAD - SOU • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
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Booking Insights

KAYAK's insights & trends for Washington, D.C. to Southampton flights

Get data-powered insights and trends into flights from Washington, D.C. to Southampton to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington, D.C. to Southampton?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to Southampton were found on KLM ($795) and Delta ($812).

Good to know

Cheapest flight$494
Flight from Washington Dulles Airport to Southampton

When to book flights from Washington, D.C. to Southampton

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Southampton based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Southampton

  • What is the cheapest flight from Washington, D.C. to Southampton?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Southampton was $494 for a one-way ticket and $793 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Southampton?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Southampton?

    On your way to Southampton, you’ll fly out from one of these Washington, D.C. airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You’ll be landing at Southampton Eastleigh.

  • Which aircraft models fly most regularly from Washington, D.C. to Southampton?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Southampton?

    SkyTeam, and oneworld are the airline alliances operating flights between Washington, D.C. and Southampton, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Southampton, KLM or Aer Lingus?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Southampton are KLM and Aer Lingus. With an average price for the route of $1,233 and an overall rating of 7.8, KLM is the most popular choice. Aer Lingus is also a great choice for the route, with an average price of $856 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Southampton?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Southampton.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Southampton?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Southampton from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Southampton?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Southampton with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Southampton?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Southampton from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Washington, D.C. to Southampton

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Southampton. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Southampton? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1385 reviews
7.8Boarding
8.4Crew
7.3Food
7.7Comfort
7.2Entertainment
Airline reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

2.0 MediocrePeter, Aug 2025SAN - AMS
Read more KLM reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

Terrible leg room - I’m 5’3” and my knees were touching the seat in front of me. When the person sitting in front of me leaned back, there was about 15 inches of space between my head and the TV screen which made it awkward to view movies. Last year they had decent food, but this year the only tasty item on the trip was dessert.

The flight was delayed leaving Philadelphia due to “catering” and consequently arrived in Dublin some 75 minutes later than scheduled. Consequently this caused me to miss my connecting flight to Glasgow and I had to spend the night in Dublin.

The flight from Cincinnati to Philadelphia was satisfactory and uneventful.

It was truly a horrible flight. We were delayed almost 2 hours. The seats were so tiny, my legs were hurting the entire flight. When i finally made it to Ireland i missed my connecting flight because we left Newark late. I will most likely never fly Aer Lingus again

It was fine. Not worth the premium price. Overhead bins were so high I could barely reach and no crew offered to help me. Average food. Lounge in Dublin - 51st and green- absolutely appalling. Plagued with hordes of flies, dirty, meager food and beverages. Shameful.

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

Not JetBlue's fault but Aer Lingus never explained how to transfer to JetBlue.

I was very disappointed that the online sys allowed me to get the boarding pass for the second leg of the trip, when I clearly request it for both flights!

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

Everything you need to know for your flight from Washington, D.C. to Southampton

Information on your arrival and departure airports

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