US$674️ Cheap Flights from Seattle to Belfast (2024)

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Seattle to Belfast - Flights Starting at US$674

Book one-way or return flights from Seattle to Belfast from as little as US$674. Choose from the popular airlines below and book your flight today!

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

We've found these cheap flights for you. You may book a one-way or round trip as per your needs.

We monitor flight fares to help you seize the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Cheapest airlines flights from Seattle to Belfast

View airlines operating flights from Seattle to Belfast. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

WestJet

From US$304

Icelandair

From US$516

Virgin Atlantic

From US$600

Air France

From US$649

KLM

From US$674

Finnair

From US$703

British Airways

From US$707

Air Tahiti Nui

From US$712

Delta Air Lines

From US$716

Alaska Airlines

From US$723

ANA airlines

Find more flights and airlines

Alternative Routes from Seattle to Belfast

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Seattle to Belfast.

Cheapest
SEA
07:00
40h 45m
2 transfer
BFS
07:45
Seattle-Tacoma International Airport - Belfast International Airport
Sat, May 25WestJet
US$304
SEA
07:00
42h 5m
2 transfer
BHD
09:05
Seattle-Tacoma International Airport - George Best Belfast City Airport
Sat, May 25WestJet
US$318
SEA
07:00
42h 5m
2 transfer
BHD
09:05
Seattle-Tacoma International Airport - George Best Belfast City Airport
Sat, May 25WestJet
US$318
Find More Flights

Frequently Asked Questions

When are flight tickets from Seattle (SEA) to Belfast (BFS) the cheapest?
Airlines adjust prices for flights from Seattle to Belfast based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Seattle (SEA) to Belfast (BFS) cost?
According to Trip.com's data, the lowest price is around $1,559.
What is the transportation method from the main airport to downtown in Belfast?
- The distance from Belfast International Airport to downtown is about 19km. It takes about 30 minutes by taxi.
- The distance from George Best Belfast City Airport to downtown is about 4km. It takes about 20 minutes by taxi.

How to find a cheap flight from Seattle to Belfast

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Belfast. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

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