Seattle / Tacoma (SEA) to Basel Mulhouse Freiburg (BSL) flight deal from $418 USD in economy class – flightdeals.net

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Air France

Delta Air Lines

DLDelta Air Lines

KLM

One Way•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Euro Airport Basel-Mulhouse-Freiburg

Basel Mulhouse Freiburg, France

$551 USD

-24%$418 USD

Verified Dec 1, 2025 at 4:02 AM

January 2026

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29$468 30$468 31$468 1$518 2$895 3$900 4$662 5$562 6$474 7$473 8$518 9$523 10$630 11$483 12$423 13$424 14$423 15$474 16$468 17$468 18$418 19$418 20$423 21$423 22$468 23$468 24$468 25$418 26$418 27$418 28$423 29$468 30$468 31$468 1

Fair Availability

33% of dates checked are available within 10% of the lowest price

Monday, January 5th, 2026

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