Cheap Flights from Washington (IAD) to Belfast (BFS)

Popular airlines from Washington Dulles Intl. Airport (IAD) to Belfast International Airport (BFS)

Alternative airports near Belfast

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to George Best Belfast City BHD. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $1,056
BHD
George Best Belfast City
CheapestClosest
Average driving time to city center6 min
Flights from $1,056

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Belfast Intl. Airport (BFS) cost?
Snag a cheap one-way flight or cheap return flight from Washington Dulles Intl. Airport (IAD) to Belfast Intl. Airport (BFS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Belfast Intl. Airport (BFS)?
The cheapest month to fly from IAD to BFS is , when demand is low. Off-peak season is often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Belfast Intl. Airport (BFS)?
To find the cheapest airline that'll fly you from IAD to BFS, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Belfast Intl. Airport (BFS)?
Nonstop flights from Washington Dulles Intl. Airport (IAD) to Belfast Intl. Airport (BFS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to BFS?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on various factors, including the time of year and carrier.*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 Belfast Intl. Airport (BFS)?
To touch down at Belfast Intl. Airport (BFS) on time, pick a flight that leaves Washington Dulles Intl. Airport (IAD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Belfast Intl. Airport (BFS) last-minute?
Last-minute fares from IAD to BFS are typically more expensive. To lock in the best prices, start looking for flights ahead of time. That being said, if your travel plans are flexible, you may find a cheap fare right before you leave.
Is it cheaper to book an IAD to BFS flight and hotel package?
Booking an IAD to BFS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our impressive range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Belfast Intl. Airport (BFS)?
In most instances, you can cancel or reschedule your IAD to BFS flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like further information, visit our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Belfast Intl.
Distance
3377 mi

Book with confidence

Washington to Belfast Flights

The cheapest times to fly from Washington to Belfast

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

 

The best time to book a flight from Washington to Belfast

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

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 Belfast 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 Belfast 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 Belfast 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.

 

Washington to Belfast Flights

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*Available to One Key members.