IAD

£415 Find Cheap Flights from Belfast to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast to Dulles Intl departing on 11/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£617
Multiple Airlines
Sun 7/6Sun 14/6
BFS - IAD • 3 stops
Cheapest one-way flight
£415
Multiple Airlines
Tue 11/8
BFS - IAD • 3 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Belfast to Dulles Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Belfast to Dulles Intl

Sun, 7 Jun - Sun, 14 Jun
Multiple Airlines Logo
22:10 - 15:10
BFS
-
IAD
46h 00m
3 stops
Multiple Airlines Logo
17:15 - 18:50
IAD
-
BFS
20h 35m
2 stops
£617Multiple Airlines
Sun, 7 Jun - Sun, 14 Jun
Multiple Airlines Logo
09:55 - 22:15
BFS
-
IAD
17h 20m
2 stops
Multiple Airlines Logo
23:20 - 20:15
IAD
-
BFS
15h 55m
2 stops
£625Multiple Airlines
Tue, 26 May - Tue, 2 Jun
Multiple Airlines Logo
07:35 - 15:10
BFS
-
IAD
36h 35m
3 stops
Multiple Airlines Logo
17:15 - 19:40
IAD
-
BFS
21h 25m
2 stops
£659Multiple Airlines
Fri, 5 Jun - Tue, 16 Jun
Multiple Airlines Logo
07:35 - 19:00
BFS
-
IAD
40h 25m
3 stops
Multiple Airlines Logo
08:18 - 16:20
IAD
-
BFS
27h 02m
3 stops
£671Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
22:30 - 20:35
BFS
-
IAD
27h 05m
3 stops
Multiple Airlines Logo
08:18 - 16:20
IAD
-
BFS
27h 02m
3 stops
£682Multiple Airlines
Fri, 5 Jun - Tue, 16 Jun
British Airways Logo
06:30 - 17:30
BHD
-
IAD
16h 00m
1 stop
British Airways Logo
19:20 - 10:45
IAD
-
BHD
10h 25m
1 stop
£708British Airways
Tue, 23 Jun - Tue, 11 Aug
American Airlines Logo
09:40 - 20:20
BHD
-
IAD
15h 40m
1 stop
American Airlines Logo
17:34 - 15:20
IAD
-
BHD
16h 46m
2 stops
£712American Airlines
Fri, 5 Jun - Tue, 16 Jun
British Airways Logo
09:35 - 00:13
BHD
-
IAD
19h 38m
2 stops
British Airways Logo
19:20 - 10:45
IAD
-
BHD
10h 25m
1 stop
£715British Airways
Tue, 23 Jun - Tue, 11 Aug
American Airlines Logo
13:45 - 20:20
BHD
-
IAD
11h 35m
1 stop
American Airlines Logo
17:34 - 15:20
IAD
-
BHD
16h 46m
2 stops
£722American Airlines
Thu, 21 May - Thu, 28 May
Aer Lingus Logo
06:50 - 19:10
BHD
-
IAD
17h 20m
2 stops
Aer Lingus Logo
17:15 - 17:50
IAD
-
BHD
19h 35m
2 stops
£801Aer Lingus
Booking Insights

KAYAK’s insights & trends for Belfast to Dulles Intl flights

Get data-powered insights and trends into flights from Belfast to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Belfast to Washington, D.C.?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from Belfast to Washington, D.C. were found on British Airways (£708) and American Airlines (£712).

Find deals

Good to know - Cheap tickets from Belfast to Washington, D.C.

Cheapest flight£415
Flight from Belfast Intl Airport to Washington, D.C.

When to book flights from Belfast to Dulles Intl

Are your dates flexible? Find out the best times to travel from Belfast to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Belfast to Washington, D.C. flights

  • What is the cheapest flight from Belfast to Washington, D.C. Dulles Intl Airport?

    In the last 3 days, the lowest price for a flight from Belfast to Washington, D.C. Dulles Intl Airport was £415 for a one-way ticket and £617 for a return.

  • Which airports will I be using when flying from Belfast to Washington, D.C.?

    There are 2 airports in Belfast (Belfast Intl and Belfast City.) and only 1 airport in Washington, D.C. (Washington, D.C. Dulles Intl). The cheapest flights are generally found on the Belfast City Airport to Washington, D.C. Dulles Intl flight route.

  • Which aircraft models fly most regularly from Belfast to Washington, D.C.?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Belfast to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Belfast is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back to Belfast with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Belfast up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Belfast to Dulles Intl

Information on your arrival and departure airports

Dulles Intl (IAD)