£188 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 4/2. 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
£464
British Airways
Thu 5/3Thu 12/3
IAD - BHD • 1 stop
Cheapest one-way flight
£188
Multiple Airlines
Wed 4/2
IAD - BFS • 3 stops
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Flight Deals
Useful Info
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

Thu, 5 Mar - Thu, 12 Mar
British Airways Logo
21:45 - 16:40
IAD
-
BHD
13h 55m1 stop
British Airways Logo
09:05 - 16:35
BHD
-
IAD
11h 30m1 stop
£464British Airways
Thu, 8 Jan - Thu, 22 Jan
British Airways Logo
21:45 - 16:40
IAD
-
BHD
13h 55m1 stop
British Airways Logo
10:40 - 19:55
BHD
-
IAD
14h 15m1 stop
£466British Airways
Mon, 16 Mar - Sun, 22 Mar
British Airways Logo
22:45 - 14:15
IAD
-
BHD
11h 30m1 stop
British Airways Logo
20:25 - 16:35
BHD
-
IAD
24h 10m1 stop
£479British Airways
Wed, 11 Feb - Sun, 15 Feb
British Airways Logo
21:45 - 14:15
IAD
-
BHD
11h 30m1 stop
British Airways Logo
09:10 - 15:35
BHD
-
IAD
11h 25m1 stop
£481British Airways
Mon, 16 Mar - Sun, 22 Mar
KLM Logo
19:59 - 16:50
IAD
-
BHD
16h 51m2 stops
KLM Logo
17:20 - 17:05
BHD
-
IAD
27h 45m1 stop
£500KLM
Thu, 5 Mar - Thu, 12 Mar
Multiple Airlines Logo
18:05 - 16:50
IAD
-
BHD
17h 45m1 stop
Multiple Airlines Logo
06:30 - 20:54
BHD
-
IAD
18h 24m2 stops
£504Multiple Airlines
Thu, 5 Mar - Thu, 12 Mar
Delta Logo
12:23 - 16:50
IAD
-
BHD
23h 27m2 stops
Delta Logo
06:30 - 23:35
BHD
-
IAD
21h 05m2 stops
£507Delta
Mon, 26 Jan - Mon, 2 Feb
Multiple Airlines Logo
17:30 - 20:15
IAD
-
BFS
21h 45m2 stops
Multiple Airlines Logo
06:00 - 14:35
BFS
-
IAD
37h 35m3 stops
£521Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
19:40 - 18:55
IAD
-
BFS
18h 15m2 stops
Multiple Airlines Logo
07:10 - 18:30
BFS
-
IAD
16h 20m2 stops
£535Multiple Airlines
Thu, 8 Jan - Thu, 22 Jan
Delta Logo
12:23 - 16:50
IAD
-
BHD
23h 27m2 stops
Delta Logo
17:20 - 18:21
BHD
-
IAD
30h 01m2 stops
£561Delta
Useful Info

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 £188 for a one-way ticket and £464 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)