Cheapest one-way flights from Seattle to Brussels in March from $388

AirHint found the following cheapest one-way flights from Seattle (SEA) to Brussels (BRU) in March 2026 (see full year).

One-Way flights

13 Mar Alaska Airlines

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

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.

Book a cheap hotel in Brussels

Cheap car rent in Brussels

Feel free to contact us with any feedback or request another flight research.