Basel Mulhouse Freiburg (BSL) to Seattle / Tacoma (SEA) flight deal from $608 USD in economy class – flightdeals.net

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Air France

Delta Air Lines

DLDelta Air Lines

KLM

Round Trip•Economy

Euro Airport Basel-Mulhouse-Freiburg

Basel Mulhouse Freiburg, France

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$805 USD

-24%$608 USD

Verified Oct 17, 2025 at 12:53 AM

October 2025

Mon

Tue

Wed

Thu

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Sat

Sun

29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17$1,002 18$1,002 19$997 20$840 21$840 22$840 23$840 24$821 25$785 26$1,202 27$799 28$718 29$718 30$660 31$608 1$608 2$724

Good Availability

44% of dates checked are available within 10% of the lowest price

Tuesday, October 28th, 2025

5 round-trip options

Returning

Sun, Nov 2, 2025•5 Day Trip

$860 USD

Returning

Mon, Nov 3, 2025•6 Day Trip

$723 USD

Returning

Tue, Nov 4, 2025•7 Day Trip

$723 USD

Returning

Wed, Nov 5, 2025•8 Day Trip

$718 USD

Returning

Thu, Nov 6, 2025•9 Day Trip

$723 USD