Cheap flights from Seattle to Belfast from $387
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Belfast departing on 12/1. 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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British Airways flights from Seattle to Belfast City Airport
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American Airlines flights from Seattle to Belfast City Airport
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How to get the cheapest flight ticket from Seattle to Belfast City Airport
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 Belfast City Airport?
On average, the least expensive day to fly to Belfast City Airport from Seattle is on a Thursday. momondo users have found tickets for Thursday departures for as low as $782. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $794.
What is the cheapest time of day to depart on your flight to Belfast City Airport?
According to our data, the cheapest time of day to fly to Belfast City Airport is in the evening. momondo users have found flights departing from Seattle to Belfast City Airport in the evening for as low as $772. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $782.
When to book flights from Seattle to Belfast City Airport
Cheap Seattle to Belfast City Airport (SEA to BHD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Belfast City Airport
How far is Seattle/Tacoma Intl to Belfast City by plane?
Belfast City is 4463.4 mi away from Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 13h 10m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Belfast City Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Belfast City Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Belfast City Airport?
As of June 2025, there is 1 operator available to choose from for flights from Seattle/Tacoma Intl Airport to Belfast City Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Belfast City 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 Seattle/Tacoma Intl Airport to Belfast City Airport.
What documentation or ID do you need to fly to Belfast City Airport?
The travel and health documents required for your trip to Belfast City Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Belfast City Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Seattle to Belfast City Airport?
Based on momondo bookings for flights between Seattle and Belfast City Airport, the leading airline is British Airways, making up 100% of the total bookings.
Best airlines flying from Seattle to Belfast City Airport
Compare and see reviews for airlines that fly from Seattle to Belfast City Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $572 | Free Cancellation | Rating 6.6 7,019 reviews |
Traveling to a place near Belfast?
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Why should I use momondo to find a flight deal from Seattle to Belfast?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Belfast. momondo saves you time and could save you money on your trip.
Can I find flights from Seattle to Belfast with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Belfast from Seattle with this policy.
How can momondo help me find flights from Seattle to Belfast?
momondo provides multiple filters to help you find the best flight to Belfast from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Seattle to Belfast right now. Can momondo alert me if prices change?
Price alerts on flights to Belfast from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.