Seattle / Tacoma (SEA) to Brussels (BRU) flight deal from $492 USD in economy class

ACAir Canada

LHLufthansa

LXSwiss International Air Lines

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

BRU

Brussels Airport (Zaventem Airport)

Brussels, Belgium

$748 USD

-34%$492 USD

Verified Nov 6, 2025 at 11:16 AM

December 2025

Today

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1$592 2$593 3$514 4$497 5$497 6$499 7$498 8$498 9$498 10$498 11$523 12$598 13$675 14$630 15$530 16$727 17$933 18$1,314 19$1,458 20$1,321 21$1,527 22$1,463 23$1,133 24$996 25$971 26$1,000 27$968 28$786 29$712 30$510 31$493 1 2 3 4

Fair Availability

29% of dates checked are available within 10% of the lowest price

Saturday, December 6th, 2025

10 round-trip options

Returning

Thu, Dec 11, 2025•5 Day Trip

$1,687 USD

Google Flights

Returning

Fri, Dec 12, 2025•6 Day Trip

$617 USD

Google Flights

Returning

Sat, Dec 13, 2025•7 Day Trip

$499 USD

Google Flights

Returning

Sun, Dec 14, 2025•8 Day Trip

$510 USD

Google Flights

Returning

Mon, Dec 15, 2025•9 Day Trip

$517 USD

Google Flights

Returning

Tue, Dec 16, 2025•10 Day Trip

$540 USD

Google Flights

Returning

Wed, Dec 17, 2025•11 Day Trip

$542 USD

Google Flights

Returning

Thu, Dec 18, 2025•12 Day Trip

$540 USD

Google Flights

Returning

Fri, Dec 19, 2025•13 Day Trip

$915 USD

Google Flights

Returning

Sat, Dec 20, 2025•14 Day Trip

$1,089 USD

Google Flights