SEA - BHD

$774 Find Cheap Flights from Seattle to Belfast City Airport

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Belfast City departing on 4/30. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast City Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle 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 Seattle to Belfast, as well as popular online travel agencies
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Cheap Flights from Seattle to Belfast City

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

Recent round-trip flight deals from Seattle to Belfast City

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Belfast City.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
British Airways Logo
8:20 pm - 6:40 pmSEA-BHD
14h 20m1 stop
British Airways Logo
6:30 pm - 11:10 amBHD-SEA
24h 40m1 stop
$774British Airways
Find Deal
Wed, Apr 30 - Mon, May 12
British Airways Logo
8:20 pm - 7:15 pmSEA-BHD
14h 55m1 stop
British Airways Logo
7:30 pm - 11:10 amBHD-SEA
23h 40m1 stop
$786British Airways
Find Deal
Sat, May 3 - Mon, May 12
American Airlines Logo
1:35 pm - 3:30 pmSEA-BHD
17h 55m2 stops
American Airlines Logo
3:50 pm - 11:35 amBHD-SEA
27h 45m1 stop
$811American Airlines
Find Deal
Fri, May 2 - Sun, May 11
American Airlines Logo
1:35 pm - 3:30 pmSEA-BHD
17h 55m2 stops
American Airlines Logo
6:50 am - 4:00 pmBHD-SEA
17h 10m2 stops
$816American Airlines
Find Deal
Fri, May 2 - Sun, May 11
Delta Logo
9:25 am - 9:15 pmSEA-BHD
27h 50m2 stops
Delta Logo
5:25 pm - 11:40 amBHD-SEA
26h 15m1 stop
$878Delta
Find Deal
Sun, May 4 - Mon, May 12
Delta Logo
6:10 pm - 9:15 pmSEA-BHD
19h 05m1 stop
Delta Logo
5:25 pm - 6:50 pmBHD-SEA
33h 25m2 stops
$883Delta
Find Deal
Wed, Apr 30 - Mon, May 12
Aer Lingus Logo
6:45 pm - 7:55 pmSEA-BHD
17h 10m2 stops
Aer Lingus Logo
6:15 pm - 4:59 pmBHD-SEA
30h 44m2 stops
$962Aer Lingus
Find Deal
Tue, Jul 15 - Tue, Jul 22
KLM Logo
2:10 pm - 9:15 pmSEA-BHD
23h 05m1 stop
KLM Logo
6:30 am - 4:08 pmBHD-SEA
17h 38m2 stops
$965KLM
Find Deal
Thu, May 1 - Mon, May 12
Aer Lingus Logo
6:45 pm - 6:15 pmSEA-BHD
15h 30m2 stops
Aer Lingus Logo
6:00 pm - 4:59 pmBHD-SEA
30h 59m2 stops
$1,012Aer Lingus
Find Deal
Fri, May 2 - Mon, May 12
KLM Logo
6:35 pm - 9:15 pmSEA-BHD
18h 40m2 stops
KLM Logo
6:30 am - 4:44 pmBHD-SEA
18h 14m2 stops
$1,114KLM
Find Deal
Thu, May 1 - Sun, May 11

KAYAK's insights & trends for Seattle to Belfast City flights

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

Which airlines provide the cheapest flights from Seattle to Belfast City Airport?

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 round-trip tickets from Seattle to Belfast City Airport were found on British Airways ($774) and American Airlines ($811).

Good to know

Cheapest flight

$774
Flight from Seattle to Belfast City Airport

When to book flights from Seattle to Belfast City

Are your dates flexible? Find out the best times to travel from Seattle to Belfast City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 Seattle to Belfast City Airport flights

  • What is the cheapest flight from Seattle to Belfast City Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Belfast City Airport was $984 for a one-way ticket and $774 for a round-trip.

  • Do I need a passport to fly between Seattle and Belfast City Airport?

    Yes, you’ll need a passport to travel to Belfast City Airport from Seattle.

  • Which aircraft models fly most regularly from Seattle to Belfast City Airport?

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

  • Which airline alliances offer flights from Seattle to Belfast City Airport?

    oneworld, and SkyTeam are the airline alliances operating flights between Seattle and Belfast City Airport, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Seattle to Belfast City Airport?

    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 Seattle to Belfast City Airport.

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

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

    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 Belfast City Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and BHD can sometimes prove cheaper using this method.

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

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

See more FAQs

Top airline flying from Seattle to Belfast City

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Belfast. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Belfast City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.6
British AirwaysOverall score based on 6717 reviews
6.3Food
6.7Comfort
6.8Boarding
7.5Crew
6.4Entertainment
Airline reviews

Was late but that airport/storm fault. Flight was full but comfortable. Food quite nice. Unfortunate that I had a rather miserable attendant, others were much friendlier

8.0 Excellentsteve, Mar 2025TPA - LGW
Read more British Airways reviews

Was late but that airport/storm fault. Flight was full but comfortable. Food quite nice. Unfortunate that I had a rather miserable attendant, others were much friendlier

Experience was good. Could have been better if we didn’t have to board an hour before the flight to ghana and miss relaxing time in the lounge. That process was very stressful

I was charged fees for check in bags at the airport by British Airways. It was supposed to be no charge but Kayak messed up my booking apparently and I had to pay for check in bags. I paid $175.

They took my carry on and checked it in. Staff in general at Heathrow are not friendly or helpful

The crew were professional and friendly. It was the most uncomfortable international flight I've ever flown. Crammed in passengers. No overhead space to put my bag. No leg room and unable to recline seat due to seats too close together so it upset passenger behind me! Upgrade price to get 2 inches of more space unreasonable.

Boarding in Dallas was hell with extremely rude gate agents , especially a lady named Rajathi who was the epitome of rudeness with no compassion at all . She was horrible and I wonder why airlines have people like her on their roster who exude arrogance and haughtiness . Will probably not fly British Airwsys because of people like her .

Food was average. Better headphones seats were average at best.

Nice flight. Legroom was good. Food was good. Staff was friendly and helpful. Plane was modern and clean. Seats and headrests were comfortable. Entertainment system was good and modern, with a bright LCD screen and many appealing choices.

I have something to say about the flight I took from London to Gothenburg, after my flight from Austin to London. I fly a lot and have done so for decades. I first flew to Scandinavia in 1973. My former wife is Norwegian. The main thing was the experience at the Gothenburg airport. Three flights from Britain arrived around the same time. So there were huge lines at immigration since Brits are no longer a part of the EU. After over an hour in line, I finally gave my passport to the immigrations man. You’d have thought I was an Afghan. I just barely got into Sweden. I had to answer all kinds of blunt questions. I had to show all kinds of onward tickets, addresses of places I’d be staying and it was pretty daunting. Perhaps it has to do with the situation with Russia. British Air might have done something to prepare people that things have changed a lot and they’d better be ready to run the gauntlet when trying to get into the country here. Thanks for listening and taking this into consideration. Sincerely, a senior citizen of the USA

My flight was late. We stayed in aircraft one hour 😩

Everything you need to know for your flight from Seattle to Belfast City

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