Seattle / Tacoma (SEA) to Brussels (BRU) cheap flight deal from $507 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

$777 USD

-35%$507 USD

Verified Sep 21, 2025 at 4:32 PM

October 2025

Today

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29$724 30$724 1$724 2$724 3$724 4$724 5$679 6$638 7$638 8$638 9$699 10$688 11$688 12$638 13$638 14$638 15$638 16$688 17$699 18$655 19$544 20$514 21$508 22$508 23$558 24$558 25$796 26$513 27$508 28$519 29$519 30$669 31$857 1 2

Fair Availability

20% of dates checked are available within 10% of the lowest price

Saturday, October 18th, 2025

10 round-trip options

Returning

Thu, Oct 23, 2025•5 Day Trip

$1,196 USD

Google Flights

Returning

Fri, Oct 24, 2025•6 Day Trip

$1,208 USD

Google Flights

Returning

Sat, Oct 25, 2025•7 Day Trip

$1,165 USD

Google Flights

Returning

Sun, Oct 26, 2025•8 Day Trip

$763 USD

Google Flights

Returning

Mon, Oct 27, 2025•9 Day Trip

$687 USD

Google Flights

Returning

Tue, Oct 28, 2025•10 Day Trip

$671 USD

Google Flights

Returning

Wed, Oct 29, 2025•11 Day Trip

$659 USD

Google Flights

Returning

Thu, Oct 30, 2025•12 Day Trip

$655 USD

Google Flights

Returning

Fri, Oct 31, 2025•13 Day Trip

$706 USD

Google Flights

Returning

Sat, Nov 1, 2025•14 Day Trip

$719 USD

Google Flights