Cheap flights from Belfast-International to Washington D.C
Cheap return flights from Belfast-International to Washington D.C
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Washington D.C flight facts
What you need to know
What are the cheapest airlines?
- Ryanair
- British Airways
- United Airlines
These airlines usually offer the cheapest flights from Belfast-International to Washington D.C.
What airlines fly indirectly?
- American Airlines
- Delta Airlines
- Lufthansa
These airlines fly from Belfast-International to Washington D.C, but you’ll have at least one layover.
How long is the flight?
10 hours 30 minutes
This is the shortest flight time from Belfast-International to Washington D.C.
Alternative flights from the UK to Washington D.C
Check out prices for other routes
Alternative flights from Belfast-International
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Belfast-International/Washington D.C route. There are around 35 flights on any given week from the UK to Washington D.C and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Belfast-International to Washington D.C
Tips and advice from our flight experts
You've searched for flights from Belfast International to Washington D.C. We've found 25 flights and compared multiple offers to get you the best deal. Ryanair is, on average, the cheapest airline for this route, so keep an eye out for them. The cheapest offer we've found is a one-way ticket for £84 from Belfast International to Washington D.C. on 23/04/2026 at 02:10.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 15 airlines that operate the 5,800 km flight from Belfast International to Washington D.C.
To find the best offers, consider booking 2-3 months in advance or looking for last-minute deals. Ryanair is a popular, budget-friendly airline for this route. The average flight duration is about 10 hours 30 minutes. After selecting an offer, fill out your information and make the payment. Don't forget to check our flight + hotel service to save time and money!
Other popular destinations near Washington D.C
Where other people are flying to
