$508 Find Cheap Flights from Belfast to Washington - 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 from Belfast to Washington departing on 10/23. 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

Book Cheap Belfast to Washington Plane Tickets

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

Mon, Aug 31 - Sun, Sep 6
Multiple Airlines Logo
6:40 am - 8:03 pm
BFS
-
SEA
21h 23m
1 stop
Multiple Airlines Logo
7:38 am - 11:10 pm
SEA
-
BFS
31h 32m
2 stops
$874Multiple Airlines
Mon, Aug 31 - Sun, Sep 6
Multiple Airlines Logo
6:40 am - 8:03 pm
BFS
-
SEA
21h 23m
1 stop
Multiple Airlines Logo
5:30 pm - 11:10 pm
SEA
-
BFS
21h 40m
1 stop
$880Multiple Airlines
Mon, Aug 31 - Sun, Sep 6
Multiple Airlines Logo
7:00 am - 8:03 pm
BHD
-
SEA
21h 03m
1 stop
Multiple Airlines Logo
5:30 pm - 8:30 pm
SEA
-
BHD
19h 00m
1 stop
$923Multiple Airlines
Mon, Aug 31 - Sun, Sep 6
Multiple Airlines Logo
6:30 am - 11:35 am
BHD
-
SEA
13h 05m
1 stop
Multiple Airlines Logo
1:50 pm - 5:40 pm
SEA
-
BHD
19h 50m
2 stops
$947Multiple Airlines
Thu, Sep 17 - Sun, Sep 20
British Airways Logo
6:30 am - 11:35 am
BHD
-
SEA
13h 05m
1 stop
British Airways Logo
6:15 am - 10:30 am
SEA
-
BHD
20h 15m
2 stops
$949British Airways
Thu, Sep 17 - Sun, Sep 20
British Airways Logo
6:30 am - 11:35 am
BHD
-
SEA
13h 05m
1 stop
British Airways Logo
6:15 am - 10:30 am
SEA
-
BHD
20h 15m
2 stops
$950British Airways
Thu, Sep 17 - Sun, Sep 20
British Airways Logo
6:30 am - 11:35 am
BHD
-
SEA
13h 05m
1 stop
British Airways Logo
6:15 am - 10:30 am
SEA
-
BHD
20h 15m
2 stops
$951British Airways
Thu, Sep 17 - Sun, Sep 20
British Airways Logo
6:30 am - 12:11 am
BHD
-
SEA
25h 41m
2 stops
British Airways Logo
6:15 am - 10:30 am
SEA
-
BHD
20h 15m
2 stops
$954British Airways
Thu, Sep 17 - Sun, Sep 20
British Airways Logo
6:30 am - 12:11 am
BHD
-
SEA
25h 41m
2 stops
British Airways Logo
6:15 am - 10:30 am
SEA
-
BHD
20h 15m
2 stops
$956British Airways
Mon, Aug 31 - Sun, Sep 6
Multiple Airlines Logo
6:30 am - 11:59 pm
BHD
-
SEA
25h 29m
2 stops
Multiple Airlines Logo
10:19 am - 5:40 pm
SEA
-
BHD
23h 21m
2 stops
$961Multiple Airlines
Booking Insights

KAYAK's insights & trends for Belfast to Washington flights

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

How long does a flight from Belfast to Washington take?

The duration of a flight to Washington depends on your arrival airport. The shortest route to Washington from Belfast is to Seattle, which takes 13h 05m.

Find deals

Good to know

Cheapest flight

$508
Flight from Belfast Intl 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 from Belfast to 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 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 from Belfast to Washington with an airline and back 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 from Belfast to 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 from Belfast to Washington

Cabin class types available on flights to Washington

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