Cheapest one-way flights from Seattle to Brussels in September from 206€

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

One-Way flights

18 Sep Icelandair
07 Sep Icelandair

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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