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 agoJuly 2026
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Good Availability
43% of dates checked are available within 10% of the lowest price
Wednesday, July 29th, 2026
8 round-trip options
Returning
Mon, Aug 3, 2026•5 Day Trip
$1,065 USD
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Tue, Aug 4, 2026•6 Day Trip
$1,065 USD
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Wed, Aug 5, 2026•7 Day Trip
$1,065 USD
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Thu, Aug 6, 2026•8 Day Trip
$1,059 USD
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Fri, Aug 7, 2026•9 Day Trip
$1,065 USD
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Sun, Aug 9, 2026•11 Day Trip
$1,059 USD
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Tue, Aug 11, 2026•13 Day Trip
$1,059 USD
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Wed, Aug 12, 2026•14 Day Trip
$1,064 USD