Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Belfast Intl Airport to Seattle from £403

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to Seattle departing on 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
'This year, momondo is the #1 place for airfares on the internet.'
Voted winner of Europe's Best Travel App 2023
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from Belfast Intl Airport to Seattle

Cheap return flights

These are some of the best return flight deals from Belfast Intl Airport to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Belfast Intl Airport to Seattle.

Cheap last-minute flights

Planning a quick getaway from Belfast Intl Airport to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Belfast Intl Airport to Seattle

Find recent round-trip train or bus tickets from Belfast Intl Airport to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
21:10 - 17:40BFS-SEA
28h 30m3 stops
17:05 - 19:30SEA-BFS
18h 25m2 stops
Thu, 3 Apr - Thu, 24 Apr
21:10 - 17:40BFS-SEA
28h 30m3 stops
15:50 - 19:20SEA-BFS
19h 30m1 stop
Thu, 3 Apr - Thu, 24 Apr
20:15 - 17:00BFS-SEA
52h 45m3 stops
Mon, 2 Dec
08:30 - 20:50BFS-SEA
44h 20m3 stops
Thu, 5 Dec
20:35 - 14:21BFS-SEA
49h 46m3 stops
Tue, 3 Dec
08:30 - 14:21BFS-SEA
37h 51m2 stops
Thu, 5 Dec
20:55 - 20:26BFS-SEA
31h 31m2 stops
Wed, 4 Dec
17:30 - 12:15BFS-SEA
26h 45m1 stop
Wed, 4 Dec
18:25 - 17:00BFS-SEA
30h 35m2 stops
Tue, 3 Dec
19:25 - 18:00BFS-SEA
29h 35m2 stops
Sat, 22 Mar
19:25 - 18:00BFS-SEA
29h 35m2 stops
Sat, 22 Mar
08:35 - 13:11BFS-SEA
36h 36m2 stops
Tue, 17 Dec

How to get the cheapest flight ticket from Belfast Intl Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart Belfast Intl Airport for Seattle?

Tuesday. The cheapest day of the week is usually Tuesday. The most expensive is usually Saturday.

When is the cheapest time to fly from Belfast Intl Airport to Seattle?

Belfast Intl Airport to Seattle flights are currently only available in the morning

Can stopping save me money on Belfast Intl Airport to Seattle flights?

You could potentially save up to 3% on your flight if you consider stops on a Belfast Intl Airport to Seattle flight.

When to book flights from Belfast Intl Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Belfast Intl Airport to Seattle (BFS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast Intl Airport to Seattle

Best price found

£403

Fastest flight time

14h 20m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Belfast Intl Airport in the past 72 hours is £403. The best return flight deal from Belfast Intl Airport to Seattle found on momondo in the last 72 hours is £964.
The fastest flight from Belfast Intl Airport to Seattle takes 14h 20m
There are no direct flights from Belfast Intl Airport to Seattle. Popular non-direct route for this connection is Belfast Intl Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Belfast Intl to Seattle/Tacoma Intl by plane?

    Belfast Intl and Seattle/Tacoma Intl are 4452.2 mi apart from one another. Flights usually cover this in 28h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Belfast Intl Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Belfast Intl Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How old do you have to be to fly from Belfast Intl Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Seattle?

Finding the right flight to Seattle from Belfast is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Belfast to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Belfast on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Belfast to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Belfast to Seattle.

I’m not ready to book a flight from Belfast to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Belfast to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.


An easier way to manage your Seattle trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Sun 10/11
Sun 17/11
Email me momondo's favourite deals

Find better results for your trip to the United States