Looking for the price of a flight from Belfast to Seattle?

There’s no fixed price — fares between Belfast and Seattle can vary a lot by day or time.

Select your dates to check current offers.

It’s often useful to check whether nearby airports offer better fares. Flying during less crowded periods also increases your chances of finding good deals.

Are there multiple airports in Belfast and Seattle?

If your departure or arrival city has more than one airport, it's worth comparing all of them for timing and pricing.

• Airports in Belfast: City is an alternative to Belfast - International.
• Airports in Seattle: 2 airports are available in Seattle - Boeing Field, Lake Union.

If you're traveling with a group or bulky luggage, look into parking or transport options. Alternative airports may offer faster transfers or better rates.

Smart ways to search flights from Belfast to Seattle

Use Jetcost to view tailored results based on what you care about — time, duration, number of stops, or even your preferred booking agency. Results include the best airlines and travel agencies.

Other popular destinations

Flying to United States? Other travelers also searched: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Prefer non-stop flights? Just activate the filter to skip unnecessary layovers. If your dates are flexible, you can also explore different departure and return combinations to find the best fit.