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Cheap flights from Belfast Intl Airport to Seattle from $604

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 4/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Belfast Intl Airport to Seattle

Cheap round-trip flights

These are some of the best round-trip 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 layovers.

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.
8:30 pm - 11:20 amBFS-SEA
46h 50m3 stops
5:30 am - 8:10 pmSEA-BFS
30h 40m2 stops
$1,768
Find Deal
Sun, Jan 5 - Sun, Jan 12
8:30 pm - 11:20 amBFS-SEA
46h 50m3 stops
2:35 pm - 10:05 pmSEA-BFS
23h 30m3 stops
$1,799
Find Deal
Sun, Jan 5 - Sun, Jan 12
8:45 pm - 5:05 pmBFS-SEA
28h 20m2 stops
5:30 am - 8:10 pmSEA-BFS
30h 40m2 stops
$1,881
Find Deal
Sun, Jan 5 - Sun, Jan 12
10:55 pm - 8:35 pmBFS-SEA
29h 40m2 stops
Sun, Apr 13
8:15 pm - 5:05 pmBFS-SEA
52h 50m3 stops
Mon, Dec 2
8:15 pm - 6:15 pmBFS-SEA
54h 00m2 stops
Mon, Dec 2
6:00 am - 5:40 pmBFS-SEA
19h 40m3 stops
Sun, Apr 13
2:10 pm - 6:00 pmBFS-SEA
34h 50m2 stops
Sat, Mar 22

See travel insights to Seattle from

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 on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Belfast Intl Airport is on a Monday. momondo users have found tickets for Monday departures for as low as $0. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Belfast Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $708.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Belfast Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $0 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $708. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 round-trip 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

$604

Fastest flight time

19h 40m

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 $604. The best round-trip flight deal from Belfast Intl Airport to Seattle found on momondo in the last 72 hours is $1,768.
The fastest flight from Belfast Intl Airport to Seattle takes 19h 40m
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?

    The straight-line distance from Belfast Intl to Seattle/Tacoma Intl is 4452.2 mi. 28h 20m is a normal flight duration for this route.

  • 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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Belfast to Seattle. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Seattle from Belfast which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Belfast and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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.


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