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Find cheap flights from Belfast to Washington from $457

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 Washington departing on 5/20. 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
0 bags
su 5/26
su 6/2

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Best Washington Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seattle
Seattle1 stop$729

Good to know

Cheapest flight

$457
Flight from Belfast City Airport to Seattle

FAQs - booking Washington flights

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

    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.

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington 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?

    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 from Belfast up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Belfast to Washington

Recent round-trip flight deals

9/25ke
1 stopAmerican Airlines
18h 55mBHD-SEA
9/29su
2 stopsAmerican Airlines
25h 05mSEA-BHD
$729
9/25ke
2 stopsAmerican Airlines
20h 55mBHD-SEA
9/29su
2 stopsAmerican Airlines
25h 05mSEA-BHD
$734
9/25ke
2 stopsAmerican Airlines
20h 55mBHD-SEA
9/29su
2 stopsAmerican Airlines
29h 56mSEA-BHD
$741
9/25ke
1 stopAmerican Airlines
12h 45mBHD-SEA
9/29su
1 stopAmerican Airlines
15h 00mSEA-BHD
$766
9/25ke
1 stopAmerican Airlines
13h 55mBHD-SEA
9/29su
1 stopAmerican Airlines
13h 55mSEA-BHD
$769
5/24pe
1 stopDelta
24h 50mBHD-SEA
5/31pe
2 stopsDelta
20h 15mSEA-BHD
$874
5/24pe
2 stopsDelta
30h 15mBHD-SEA
5/31pe
2 stopsDelta
20h 15mSEA-BHD
$879
5/24pe
1 stop
24h 50mBHD-SEA
5/31pe
1 stop
19h 20mSEA-BHD
$961
6/15la
1 stop
25h 00mBHD-SEA
8/17la
1 stop
19h 20mSEA-BHD
$1,010
6/15la
1 stopKLM
25h 00mBHD-SEA
8/17la
2 stopsKLM
17h 35mSEA-BHD
$1,036

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Recent one-way flight deals

5/20ma
2 stops
38h 01mBHD-SEA
$457
5/20ma
3 stops
54h 45mBHD-SEA
$489
5/20ma
3 stops
29h 25mBFS-SEA
$731
5/20ma
2 stops
31h 01mBFS-SEA
$831
5/20ma
1 stop
31h 20mBHD-SEA
$1,041

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Flights to Washington

Return flight deals:

Washington - Belfast

Cabin classes: