IAD - SOU

$385 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 11/3. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$930
Multiple Airlines
Tue 8/4Thu 8/20
IAD - SOU • 2 stops
Cheapest one-way
$377
Multiple Airlines
Tue 11/3
IAD - SOU • 3 stops
Top airlines
Cheapest • from $1,003 (round-trip)
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Southampton. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,021 (round-trip)
Shortest trip • 10h 00m (one-way)
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Southampton!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Southampton

Tue, Aug 4 - Thu, Aug 20
Multiple Airlines Logo
8:25 pm - 8:45 am
IAD
-
SOU
31h 20m
2 stops
Multiple Airlines Logo
9:20 am - 3:45 pm
SOU
-
IAD
11h 25m
1 stop
$930Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Multiple Airlines Logo
8:30 pm - 7:30 pm
IAD
-
SOU
18h 00m
2 stops
Multiple Airlines Logo
9:20 am - 7:20 pm
SOU
-
IAD
15h 00m
2 stops
$944Multiple Airlines
Tue, Aug 4 - Thu, Aug 20
Multiple Airlines Logo
11:20 pm - 11:05 am
IAD
-
SOU
30h 45m
2 stops
Multiple Airlines Logo
9:20 am - 3:45 pm
SOU
-
IAD
11h 25m
1 stop
$978Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Multiple Airlines Logo
3:45 pm - 7:30 pm
IAD
-
SOU
22h 45m
2 stops
Multiple Airlines Logo
8:00 pm - 3:24 pm
SOU
-
IAD
24h 24m
2 stops
$985Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Multiple Airlines Logo
8:30 pm - 7:30 pm
IAD
-
SOU
18h 00m
2 stops
Multiple Airlines Logo
9:20 am - 3:45 pm
SOU
-
IAD
11h 25m
1 stop
$996Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Aer Lingus Logo
5:15 pm - 8:40 am
IAD
-
SOU
10h 25m
1 stop
Aer Lingus Logo
9:20 am - 3:45 pm
SOU
-
IAD
11h 25m
1 stop
$1,003Aer Lingus
Wed, Jul 15 - Wed, Jul 22
Aer Lingus Logo
5:15 pm - 8:40 am
IAD
-
SOU
10h 25m
1 stop
Aer Lingus Logo
9:20 am - 3:45 pm
SOU
-
IAD
11h 25m
1 stop
$1,007Aer Lingus
Tue, Aug 4 - Thu, Aug 20
Aer Lingus Logo
5:15 pm - 8:05 am
IAD
-
SOU
9h 50m
1 stop
Aer Lingus Logo
9:20 am - 3:45 pm
SOU
-
IAD
11h 25m
1 stop
$1,017Aer Lingus
Sat, Sep 26 - Sun, Oct 4
Multiple Airlines Logo
9:45 am - 9:25 am
IAD
-
SOU
18h 40m
3 stops
Multiple Airlines Logo
8:25 am - 7:00 pm
SOU
-
IAD
15h 35m
2 stops
$1,033Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Aer Lingus Logo
8:55 pm - 7:30 pm
IAD
-
SOU
17h 35m
1 stop
Aer Lingus Logo
9:20 am - 3:45 pm
SOU
-
IAD
11h 25m
1 stop
$1,043Aer Lingus
Booking Insights

KAYAK's insights & trends for Dulles Intl to Southampton flights

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.

Which airlines provide the cheapest flights from Washington Dulles Airport to Southampton?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Washington Dulles Airport to Southampton were found on Aer Lingus ($1,003) and Delta ($1,100).

Good to know

Cheapest flight$377
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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Southampton was $377 for a one-way ticket and $930 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.

  • 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.

Reviews of the top airline flying 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.
7.3
Aer LingusOverall score based on 1598 reviews
6.7Food
7.2Comfort
8.1Crew
7.0Entertainment
7.4Boarding
Airline reviews

We were an hour and a half late, which caused my rental car company to cancel my reservation. We had no car, had to take a taxi to our hotel, and then a taxi back to get a new car the next day. Sometimes lack of on-time performance can end up costing the passenger a lot of money, none of which is covered by the airline that operated the late flight.

6.0 GoodThomas, Jun 2026
IND - DUB
Read more Aer Lingus reviews

We were an hour and a half late, which caused my rental car company to cancel my reservation. We had no car, had to take a taxi to our hotel, and then a taxi back to get a new car the next day. Sometimes lack of on-time performance can end up costing the passenger a lot of money, none of which is covered by the airline that operated the late flight.

Overall good experience. But seats were small and uncomfortable for the price. Good entertainment, staff friendly and attentive.

Smooth quiet flight take off and landing both excellent. Food was mediocre. Boarding at gate was disorganized and unacceptable.

Very good trip. Nice clean aircraft. Helpful and friendly crew.

Crew members Grainne and Karen were extremely rude and unprofessional

I am very disappointed in that KAYAK sold me this flight as a business class it was not a business class. It was a regular economy class ticket. This was not Art Linus mistake. It was kayaks.

Crew was friendly and seats were comfortable. The connection however there were no free snacks or drinks.

Our flight from Dublin to Coruna did not exist any more. Apparently it was cancelled in February and I was not advised, nor was I offered any flights for rebooking. Happily Aer Lingus found another flight to another city in Spain that was 500 miles from Coruna; I had to pay for a hotel overnight and a revise my rental car that incurred additional costs, and I did not get to Coruna for another 24 hours. I was not at all impressed with Kayak or Chatdeal or Hertz.

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

Everything you need to know for your flight from Dulles Intl to Southampton

Information on your arrival and departure airports