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Get United's best fares today on flights from Belfast to Seattle

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Low fare calendar for flights from Belfast (BFS) to Seattle (SEA)

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Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Seattle

Monday light rain
12°C 25/05/2020
Tuesday overcast clouds
19°C 26/05/2020
Wednesday sky is clear
22°C 27/05/2020
Thursday overcast clouds
23°C 28/05/2020
Friday overcast clouds
24°C 29/05/2020
Saturday heavy intensity rain
14°C 30/05/2020
Sunday light rain
18°C 31/05/2020
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