We've gone through lots of different flights, to help you find the cheapest way to get from Belfast Aldergrove International Airport to Seattle. You can choose from one airlines.
KLM is the most popular airline that flies from Belfast Aldergrove International Airport to Seattle. But it's still worth looking at other options, as there are two flights to Seattle every week. If you want to broaden your search, look at flights departing from other airports.
Your flight from Belfast Aldergrove International Airport to Seattle will take at least 18 hrs 5 mins. On average, it takes 18 hrs 5 mins to fly the 7174 km distance. Take a look at flight times to see which one works best for you.
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