$798 Cheap flights from Southampton to Washington Dulles Intl. (SOU to IAD)

Discover our best flights from Southampton SOU to Washington IAD. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

Find our best return flights from Southampton SOU to Washington IAD at the right price  

Airfares to Washington IAD from Southampton SOU currently cost between $785 and $913. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

Book one-way flights from Southampton SOU to Washington IAD 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Southampton SOU to Washington IAD on Travelocity starting at $798. Prices and availability subject to change. Additional terms may apply. 

Get to Washington IAD from Southampton SOU quicker with direct flights. 

Get to Washington faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to IAD from SOU to take around hour(s) min(s).  

Find our cheapest airfares for flights from Southampton SOU to Washington IAD

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to IAD from SOU. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

Get our best airfare deals for your flight from Southampton SOU to Washington IAD today 

If you’re flexible about when you travel, December is usually the cheapest month to fly from Southampton SOU to Washington IAD. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

Book flexible airline tickets for flights to Washington IAD from Southampton SOU 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to IAD from SOU have this option.  

Travel with confidence when you book flights to Washington IAD from Southampton SOU with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving.