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IAD - SOU

$524 Find cheap flights from Washington Dulles Airport 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 Dulles Intl to Southampton departing on 9/14. 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
0 bags
sáb. 6/29
sáb. 7/6

Search 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
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Dulles Intl to Southampton (IAD-SOU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl 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 and deals for you by selecting your travel dates.
Choose your dates
5:25 pm - 7:10 pmIAD-SOU
20h 45m1 stop
9:25 am - 3:35 pmSOU-IAD
11h 10m1 stop
$728KLM
Find Deal
jue., oct. 10 - dom., oct. 20
5:15 pm - 7:10 pmIAD-SOU
20h 55m2 stops
9:25 am - 3:35 pmSOU-IAD
11h 10m1 stop
$735Delta
Find Deal
jue., oct. 10 - dom., oct. 20
5:25 pm - 4:50 pmIAD-SOU
18h 25m1 stop
7:55 am - 3:35 pmSOU-IAD
12h 40m1 stop
$778KLM
Find Deal
lun., ago. 5 - jue., ago. 29
12:30 pm - 7:25 amIAD-SOU
13h 55m2 stops
7:55 am - 3:35 pmSOU-IAD
12h 40m1 stop
$783KLM
Find Deal
mié., sep. 18 - vie., oct. 4
6:26 pm - 4:50 pmIAD-SOU
17h 24m2 stops
7:55 am - 3:35 pmSOU-IAD
12h 40m1 stop
$785Delta
Find Deal
lun., ago. 5 - jue., ago. 29
5:10 pm - 9:10 amIAD-SOU
11h 00m1 stop
9:40 am - 3:40 pmSOU-IAD
11h 00m1 stop
$847British Airways
Find Deal
lun., oct. 14 - mar., oct. 22
2:05 pm - 9:10 amIAD-SOU
14h 05m2 stops
9:40 am - 7:10 pmSOU-IAD
14h 30m1 stop
$850British Airways
Find Deal
lun., oct. 14 - mar., oct. 22
5:10 pm - 9:10 amIAD-SOU
11h 00m1 stop
9:40 am - 3:40 pmSOU-IAD
11h 00m1 stop
$1,080Aer Lingus
Find Deal
lun., jul. 22 - mar., ago. 6
4:00 pm - 1:20 pmIAD-SOU
16h 20m2 stops
7:25 pm - 9:16 pmSOU-IAD
30h 51m3 stops
$1,745
Find Deal
vie., jun. 28 - vie., jul. 5
4:40 pm - 8:45 amIAD-SOU
35h 05m3 stops
9:15 am - 2:45 pmSOU-IAD
34h 30m3 stops
$1,805
Find Deal
vie., jun. 28 - vie., jul. 5

Flights from Dulles Intl to Southampton - Travel Insights & Trends

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

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Southampton?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Dulles Intl Airport to Southampton, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Southampton is March, where tickets cost $635 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,369 and $1,315 respectively.

Good to know

Cheapest flight

$524
Flight from Washington Dulles Airport to Southampton

When to book flights from Dulles Intl to Southampton

Are your dates flexible? Find out the best times to travel from Dulles Intl 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 Washington Dulles Airport to Southampton flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Southampton was $524 for a one-way ticket and $728 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Southampton?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Southampton.

  • Which airports will I be using when flying from Washington Dulles Airport to Southampton?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Southampton, also known as Southampton Eastleigh.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Southampton?

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

  • Which airline alliances offer flights from Washington Dulles Airport to Southampton?

    oneworld, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport 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, Delta or Aer Lingus?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Southampton are Delta and Aer Lingus. With an average price for the route of $875 and an overall rating of 8.0, Delta is the most popular choice. Aer Lingus is also a great choice for the route, with an average price of $883 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Dulles Airport to Southampton.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Southampton from Washington Dulles Airport 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 Dulles Airport 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 Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SOU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport 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 Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Dulles Intl 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 Dulles Intl 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.
8.0
DeltaOverall score based on 10457 reviews
7.4Food
8.0Entertainment
8.2Boarding
8.6Crew
7.9Comfort
Airline reviews

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

10.0 ExcellentAnonymous, May 2024MSP - YVR
Read more about Delta reviews

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

I fly to the USA every 6wks on Ave and 99% of the time I fly Aer Lingus. If I fly BA I’m always disappointed. My only criticism is the food. I’m vegan and over the last year it’s got slightly better these last couple of flights but on the whole it’s not good! Salad and fruit salad for breakfast and that’s also the starter and desert for the lunch/dinner and the main is usually rice with fried veg 😳the pasta is pretty good though. That’s been the last 2 meals…. Everything else is fantastic.

The flight was half full and I presume that the next few days are even less busy not sure why they are still charging a premium to change a flight.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

I loved how they arrange boarding (starting with people seated in back and moving to the front). Flight crew was very polite and welcoming. Seating was ok, I felt like there was enough leg space however it is noticeable when the passenger in front of you sets their seat back.

Short flight so not much to rate. Surprised I had to pay for a soda.

Nice to be on a flight that wasn't fully booked so there were only two of us in the three seat row.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Very good need to offer better choice of food for business

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

Very bed boarding, there was overbooked and make a lot of problems and noises

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

Liked that my American Airlines status seamlessly transferred to BA so luggage check was free. Flights were on time, boarding quick. Wish they didn’t assign connecting gate so late at Heathrow.

The entire process was flawless and as expected flying first class. The only thing that I have a complaint on...when first boarding, the plane was EXTREMELY cold; then when we were trying to sleep, it was way too hot - just better regulating (especially trying to sleep) would have made it perfect.

Book cheap flights from Washington, D.C. to Southampton

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Southampton found on KAYAK in the last 72 hours.
9/14sáb.
1 stopBritish Airways
11h 00mIAD-SOU
$524
9/14sáb.
2 stopsBritish Airways
14h 46mIAD-SOU
$527
6/29sáb.
2 stopsBritish Airways
16h 30mIAD-SOU
$988
8/29jue.
1 stopBritish Airways
11h 00mIAD-SOU
$1,098
6/29sáb.
1 stopBritish Airways
11h 00mIAD-SOU
$2,201
9/10mar.
2 stopsBritish Airways
17h 06mIAD-SOU
$4,494
7/17mié.
2 stopsBritish Airways
15h 40mIAD-SOU
$6,175
9/10mar.
1 stopBritish Airways
11h 00mIAD-SOU
$7,001

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Last minute flights from Dulles Intl to Southampton

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Southampton that are departing in the next 10 days.
6/2dom.
multi-stopBritish Airways
15h 35mIAD-SOU
6/10lun.
multi-stopBritish Airways
24h 45mSOU-IAD
$2,776
6/2dom.
multi-stopBritish Airways
15h 35mIAD-SOU
6/4mar.
multi-stopBritish Airways
14h 30mSOU-IAD
$3,018
6/2dom.
multi-stopBritish Airways
15h 35mIAD-SOU
6/10lun.
multi-stopBritish Airways
11h 00mSOU-IAD
$3,202
6/2dom.
multi-stopBritish Airways
11h 00mIAD-SOU
6/4mar.
multi-stopBritish Airways
14h 30mSOU-IAD
$3,501
6/2dom.
multi-stopBritish Airways
15h 35mIAD-SOU
6/8sáb.
multi-stopBritish Airways
11h 00mSOU-IAD
$3,787
5/31vie.
multi-stopBritish Airways
14h 25mIAD-SOU
6/5mié.
multi-stopBritish Airways
10h 55mSOU-IAD
$4,210
6/2dom.
multi-stopBritish Airways
11h 00mIAD-SOU
6/8sáb.
multi-stopBritish Airways
11h 00mSOU-IAD
$4,276

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Washington Dulles Airport - Southampton Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

Southampton (SOU)United Kingdom

Return flight deals:

Southampton - Washington Dulles Airport

Cabin classes: