£300 Find Cheap Flights from Washington to Belfast – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Belfast departing on 21/9. 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

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Flight Deals

Cheap Flights from Washington to Belfast

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

Mon, 5 Oct - Thu, 22 Oct
British Airways Logo
20:20 - 20:35
SEA
-
BHD
16h 15m
1 stop
British Airways Logo
20:35 - 11:35
BHD
-
SEA
23h 00m
1 stop
£670British Airways
Mon, 5 Oct - Thu, 22 Oct
British Airways Logo
20:20 - 20:35
SEA
-
BHD
16h 15m
1 stop
British Airways Logo
20:35 - 11:35
BHD
-
SEA
23h 00m
1 stop
£671British Airways
Sun, 4 Oct - Sun, 18 Oct
British Airways Logo
20:20 - 18:45
SEA
-
BHD
14h 25m
1 stop
British Airways Logo
20:10 - 11:35
BHD
-
SEA
23h 25m
1 stop
£684British Airways
Mon, 5 Oct - Thu, 22 Oct
American Airlines Logo
15:10 - 15:30
SEA
-
BHD
16h 20m
2 stops
American Airlines Logo
06:30 - 11:35
BHD
-
SEA
13h 05m
1 stop
£686American Airlines
Sun, 4 Oct - Sun, 18 Oct
Multiple Airlines Logo
21:45 - 12:15
SEA
-
BFS
30h 30m
1 stop
Multiple Airlines Logo
19:35 - 17:10
BFS
-
SEA
29h 35m
2 stops
£688Multiple Airlines
Wed, 16 Sep - Wed, 23 Sep
Multiple Airlines Logo
15:30 - 17:05
PDX
-
BFS
17h 35m
2 stops
Multiple Airlines Logo
06:15 - 09:31
BFS
-
PDX
35h 16m
3 stops
£694Multiple Airlines
Mon, 10 Aug - Wed, 19 Aug
American Airlines Logo
12:50 - 15:30
PDX
-
BHD
18h 40m
2 stops
American Airlines Logo
06:30 - 18:00
BHD
-
PDX
19h 30m
2 stops
£740American Airlines
Wed, 16 Sep - Wed, 23 Sep
KLM Logo
07:00 - 09:20
PDX
-
BHD
18h 20m
2 stops
KLM Logo
17:30 - 16:05
BHD
-
PDX
30h 35m
2 stops
£754KLM
Sun, 9 Aug - Wed, 19 Aug
Delta Logo
13:05 - 09:20
PDX
-
BHD
12h 15m
1 stop
Delta Logo
09:50 - 20:17
BHD
-
PDX
18h 27m
2 stops
£786Delta
Wed, 16 Sep - Wed, 23 Sep
KLM Logo
13:05 - 09:20
PDX
-
BHD
12h 15m
1 stop
KLM Logo
17:30 - 11:10
BHD
-
PDX
25h 40m
1 stop
£806KLM
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Good to know - Cheap tickets from Washington to Belfast

Cheapest flight£300
Flight from Seattle to Belfast

FAQs for booking flights from Washington to Belfast

  • How does KAYAK find such low prices on flights from Washington 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 to Belfast.

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

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

  • What is the Hacker Fare option on flights from Washington 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 with another airline.

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

Cabin class types available on flights to Washington

Cabin classes available on flights to Belfast. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Belfast
Business Class flights to Belfast
Premium Economy Class flights to Belfast
Economy class flights to Belfast