Cheap Flights from Washington (IAD) to Swansea (SWS)

Popular airlines from Washington Dulles Intl. Airport (IAD) to Swansea (SWS)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Flights from Washington (IAD) to Swansea (SWS)
Origin airport
Washington Dulles Intl.
Destination airport
Swansea
Distance
3515 mi

Washington to Swansea Flights

The cheapest times to fly from Washington to Swansea

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Swansea are during the month of . You can find some of the cheapest flights from Washington to Swansea with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Swansea

Sunday is one of the best days to book for cheap flights from Washington to Swansea: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Swansea

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Swansea in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Swansea flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Swansea airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Swansea (SWS) cost?
Snag a cheap one-way flight or cheap return flight from Washington Dulles Intl. Airport (IAD) to Swansea (SWS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Swansea (SWS)?
is the most affordable month to fly from IAD to SWS. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Swansea (SWS)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest IAD to SWS flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Swansea (SWS)?
There aren't any daily direct flights from Washington Dulles Intl. Airport (IAD) to Swansea (SWS). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from IAD to SWS?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Swansea (SWS)?
Choose a flight from Washington Dulles Intl. Airport (IAD) to Swansea (SWS) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Swansea (SWS) last-minute?
Last-minute fares from IAD to SWS are typically more expensive. To secure the lowest prices, start searching for flights ahead of time. That said, if your travel plans are flexible, you may find a cheap fare right before your trip.
Is it cheaper to book an IAD to SWS flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to SWS flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place will take the stress out of travel planning. Just secure your flights and select from our extensive range of stays, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Swansea (SWS)?
If you booked your IAD to SWS flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Explore a world of travel with Expedia

*Available to One Key members.