£181 Find Cheap Flights from Washington Dulles Airport to Belfast

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Belfast departing on 10/3. 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 Belfast

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

Cheapest return fare
£434
Multiple Airlines
Wed 25/2Wed 4/3
IAD - BHD • 2 stops
Cheapest one-way flight
£181
Multiple Airlines
Tue 10/3
IAD - BFS • 3 stops
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Belfast (IAD-BHD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Belfast 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 Dulles Intl to Belfast

Wed, 25 Feb - Wed, 4 Mar
Multiple Airlines Logo
19:40 - 19:00
IAD
-
BHD
18h 20m
2 stops
Multiple Airlines Logo
07:25 - 18:30
BHD
-
IAD
16h 05m
2 stops
£434Multiple Airlines
Wed, 25 Feb - Wed, 4 Mar
British Airways Logo
18:20 - 09:10
IAD
-
BHD
9h 50m
1 stop
British Airways Logo
12:25 - 19:55
BHD
-
IAD
12h 30m
1 stop
£467British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
18:20 - 09:10
IAD
-
BHD
9h 50m
1 stop
British Airways Logo
12:10 - 16:35
BHD
-
IAD
32h 25m
1 stop
£469British Airways
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
18:20 - 09:10
IAD
-
BHD
9h 50m
1 stop
British Airways Logo
20:25 - 16:35
BHD
-
IAD
24h 10m
1 stop
£471British Airways
Thu, 5 Mar - Thu, 12 Mar
British Airways Logo
21:45 - 18:50
IAD
-
BHD
16h 05m
1 stop
British Airways Logo
10:40 - 20:55
BHD
-
IAD
14h 15m
1 stop
£473British Airways
Sat, 2 May - Sat, 9 May
British Airways Logo
17:40 - 10:05
IAD
-
BHD
11h 25m
1 stop
British Airways Logo
07:05 - 17:25
BHD
-
IAD
15h 20m
1 stop
£478British Airways
Fri, 1 May - Tue, 5 May
British Airways Logo
22:25 - 18:10
IAD
-
BHD
14h 45m
1 stop
British Airways Logo
18:20 - 17:25
BHD
-
IAD
28h 05m
1 stop
£481British Airways
Thu, 2 Apr - Tue, 7 Apr
British Airways Logo
19:15 - 20:35
IAD
-
BHD
20h 20m
1 stop
British Airways Logo
20:25 - 17:25
BHD
-
IAD
26h 00m
1 stop
£489British Airways
Wed, 25 Feb - Wed, 4 Mar
Delta Logo
12:24 - 16:50
IAD
-
BHD
23h 26m
2 stops
Delta Logo
06:30 - 16:05
BHD
-
IAD
14h 35m
1 stop
£490Delta
Thu, 14 May - Sun, 17 May
Multiple Airlines Logo
20:30 - 19:30
IAD
-
BFS
18h 00m
2 stops
Multiple Airlines Logo
09:55 - 22:15
BFS
-
IAD
17h 20m
2 stops
£563Multiple Airlines
Booking Insights

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

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

Which airlines provide the cheapest flights from Washington Dulles Airport to Belfast?

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 Washington Dulles Airport to Belfast were found on British Airways (£467) and Delta (£490).

Find deals

When to book flights from Dulles Intl to Belfast

Are your dates flexible? Find out the best times to travel from Dulles Intl to Belfast 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 Washington Dulles Airport to Belfast flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Belfast was £181 for a one-way ticket and £434 for a return.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Belfast?

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

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Belfast?

    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 Washington Dulles Airport to Belfast.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Washington Dulles Airport 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 Washington Dulles Airport to Belfast?

    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 Belfast with an airline and back to Washington Dulles Airport with another airline.

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

    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 Belfast from Washington Dulles Airport 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 Dulles Intl to Belfast

Information on your arrival and departure airports

Washington Dulles Airport (IAD)