Basel Mulhouse Freiburg (BSL) to Seattle / Tacoma (SEA) flight deal in economy from $764
BSLEuro Airport Basel-Mulhouse-Freiburg
Basel Mulhouse Freiburg, France
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$954 USD
-20%$764 USD
Verified 2 days agoAugust 2026
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Good Availability
43% of dates checked are available within 10% of the lowest price
Thursday, August 13th, 2026
8 round-trip options
Returning
Tue, Aug 18, 2026•5 Day Trip
$872 USD
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Wed, Aug 19, 2026•6 Day Trip
$872 USD
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Thu, Aug 20, 2026•7 Day Trip
$872 USD
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Fri, Aug 21, 2026•8 Day Trip
$871 USD
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Sat, Aug 22, 2026•9 Day Trip
$919 USD
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Tue, Aug 25, 2026•12 Day Trip
$871 USD
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Wed, Aug 26, 2026•13 Day Trip
$1,287 USD
Returning
Thu, Aug 27, 2026•14 Day Trip
$988 USD