Cheapest one-way flights from Seattle to Brussels in September from 289€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Brussels (BRU) in September 2025 (see full year).

One-Way flights

03 Sep Alaska Airlines
01 Sep Icelandair
07 Sep Icelandair
02 Sep Air France
11 Sep Delta
21 Sep United
26 Sep Delta

Also check the deals for return flights from Seattle to Brussels in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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