Seattle / Tacoma (SEA) to Brussels (BRU) flight deal from $506 USD in economy class

AFAir France

DLDelta Air Lines

KLKLM

Round Trip•Economy

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

BRU

Brussels Airport (Zaventem Airport)

Brussels, Belgium

$942 USD

-46%$506 USD

Verified Nov 4, 2025 at 10:30 AM

December 2025

Today

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Tue

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Sun

1$661 2$511 3$511 4$511 5$506 6$512 7$507 8$507 9$512 10$506 11$617 12$781 13$547 14$624 15$886 16$886 17$1,005 18$1,331 19$1,421 20$1,786 21$1,576 22$1,376 23$1,102 24$1,092 25$878 26$956 27$1,232 28$764 29$541 30$541 31$511 1 2 3 4

Limited Availability

17% of dates checked are available within 10% of the lowest price

Tuesday, December 9th, 2025

10 round-trip options

Returning

Sun, Dec 14, 2025•5 Day Trip

$521 USD

Google Flights

Returning

Mon, Dec 15, 2025•6 Day Trip

$512 USD

Google Flights

Returning

Tue, Dec 16, 2025•7 Day Trip

$522 USD

Google Flights

Returning

Wed, Dec 17, 2025•8 Day Trip

$622 USD

Google Flights

Returning

Thu, Dec 18, 2025•9 Day Trip

$637 USD

Google Flights

Returning

Fri, Dec 19, 2025•10 Day Trip

$861 USD

Google Flights

Returning

Sat, Dec 20, 2025•11 Day Trip

$1,302 USD

Google Flights

Returning

Sun, Dec 21, 2025•12 Day Trip

$1,012 USD

Google Flights

Returning

Mon, Dec 22, 2025•13 Day Trip

$741 USD

Google Flights

Returning

Tue, Dec 23, 2025•14 Day Trip

$711 USD

Google Flights