Cheap flights from Swindon to Washington (SWI to IAD)

Chantilly, France - December 2013: The chateau at Chantilly

Popular airlines from Swindon to Washington, DC (IAD-Washington Dulles Intl.)

United
United
Delta
Delta
American Airlines
American Airlines
Frontier Airlines
Frontier Airlines
British Airways
British Airways
Alaska Airlines
Alaska Airlines
Air Canada
Air Canada

Plan, book, fly with confidence
Be in the know
Get alerts if flight prices drop or rise*
Book smarter
Save up to 30% on select hotels after you book a flight*
Earn twice
Earn your airline miles on top of our OneKeyCash
Learn about One Key

Today's featured flight deals from Swindon to Washington, DC (IAD-Washington Dulles Intl.)

Nonstop

Carry-on included

Lower price than typical

Dallas (DFW) to Washington (IAD).
Departing on Sat, Aug 30 at 8:00am from Dallas, arriving at 12:02pm in Washington.
Returning on Tue, Sep 2 at 9:25pm from Washington, arriving at 11:30pm in Dallas.
Frontier Airlines, nonstop.
55% less than typical

$219

Select Frontier Airlines flight departing on Sat, Aug 30 at 8:00am from Dallas, returning on Tue, Sep 2 at 9:25pm from Washington priced at $219
Dallas (DFW) to Washington (IAD).
Departing on Mon, Aug 25 at 5:25am from Dallas, arriving at 9:27am in Washington.
Returning on Thu, Aug 28 at 6:27am from Washington, arriving at 8:36am in Dallas.
Frontier Airlines, nonstop.
45% less than typical

$313

Select Frontier Airlines flight departing on Mon, Aug 25 at 5:25am from Dallas, returning on Thu, Aug 28 at 6:27am from Washington priced at $313
Dallas (DFW) to Washington (IAD).
Departing on Sun, Aug 31 at 5:25am from Dallas, arriving at 9:27am in Washington.
Returning on Fri, Sep 5 at 10:17am from Washington, arriving at 12:34pm in Dallas.
Frontier Airlines, nonstop.
70% less than typical

$104

Select Frontier Airlines flight departing on Sun, Aug 31 at 5:25am from Dallas, returning on Fri, Sep 5 at 10:17am from Washington priced at $104

Atlanta (ATL) to Washington (IAD).
Departing on Mon, Aug 25 at 2:34pm from Atlanta, arriving at 4:30pm in Washington.
Returning on Wed, Sep 3 at 9:30am from Washington, arriving at 11:40am in Atlanta.
Frontier Airlines, nonstop.
50% less than typical

$183

Select Frontier Airlines flight departing on Mon, Aug 25 at 2:34pm from Atlanta, returning on Wed, Sep 3 at 9:30am from Washington priced at $183
Dallas (DFW) to Washington (IAD).
Departing on Sun, Aug 31 at 6:49pm from Dallas, arriving at 10:51pm in Washington.
Returning on Fri, Sep 5 at 11:47am from Washington, arriving at 2:00pm in Dallas.
American Airlines, nonstop.
50% less than typical

$187

Select American Airlines flight departing on Sun, Aug 31 at 6:49pm from Dallas, returning on Fri, Sep 5 at 11:47am from Washington priced at $187
Atlanta (ATL) to Washington (IAD).
Departing on Wed, Sep 3 at 7:43pm from Atlanta, arriving at 9:39pm in Washington.
Returning on Wed, Sep 10 at 9:15am from Washington, arriving at 11:10am in Atlanta.
Frontier Airlines, nonstop.
70% less than typical

$94

Select Frontier Airlines flight departing on Wed, Sep 3 at 7:43pm from Atlanta, returning on Wed, Sep 10 at 9:15am from Washington priced at $94
Orlando (MCO) to Washington (IAD).
Departing on Mon, Aug 25 at 6:27pm from Orlando, arriving at 8:48pm in Washington.
Returning on Fri, Aug 29 at 9:33pm from Washington, arriving on Sat, Aug 30 at 12:10am in Orlando.
Frontier Airlines, nonstop.
45% less than typical

$240

Select Frontier Airlines flight departing on Mon, Aug 25 at 6:27pm from Orlando, returning on Fri, Aug 29 at 9:33pm from Washington priced at $240
Atlanta (ATL) to Washington (IAD).
Departing on Tue, Aug 26 at 7:43pm from Atlanta, arriving at 9:39pm in Washington.
Returning on Mon, Sep 1 at 6:10am from Washington, arriving at 8:12am in Atlanta.
Frontier Airlines, nonstop.
45% less than typical

$206

Select Frontier Airlines flight departing on Tue, Aug 26 at 7:43pm from Atlanta, returning on Mon, Sep 1 at 6:10am from Washington priced at $206
Dallas (DFW) to Washington (IAD).
Departing on Fri, Sep 12 at 5:15am from Dallas, arriving at 9:17am in Washington.
Returning on Mon, Sep 15 at 10:17am from Washington, arriving at 12:34pm in Dallas.
Frontier Airlines, nonstop.
65% less than typical

$104

Select Frontier Airlines flight departing on Fri, Sep 12 at 5:15am from Dallas, returning on Mon, Sep 15 at 10:17am from Washington priced at $104

Flights from Swindon (SWI) to Washington (IAD)
Origin airport	SWI-All Airports
Destination airport	Washington Dulles Intl.
Distance	3608 mi

Swindon to Washington Flights

The cheapest times to fly from Swindon to Washington

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 Swindon to Washington are during the month of . You can find some of the cheapest flights from Swindon to Washington with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Swindon to Washington

Sunday is one of the best days to book for cheap flights from Swindon to Washington: 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 Swindon to Washington

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 Swindon to Washington 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 Swindon to Washington 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 Swindon to Washington 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.

Unlock instant savings with Member Prices

Cheap Flights from Swindon (SWI) to Washington (IAD)

Travelers

Popular airlines from Swindon to Washington, DC (IAD-Washington Dulles Intl.)

Plan, book, fly with confidence

Be in the know

Book smarter

Earn twice

Today's featured flight deals from Swindon to Washington, DC (IAD-Washington Dulles Intl.)

Swindon to Washington Flights

Explore a world of travel with Expedia

Lodging

Flights

Packages

Cars

Vacation Rentals

Other