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
Saturday, August 22nd, 2026
9 round-trip options
Returning
Thu, Aug 27, 2026•5 Day Trip
$795 USD
Returning
Fri, Aug 28, 2026•6 Day Trip
$913 USD
Returning
Sat, Aug 29, 2026•7 Day Trip
$795 USD
Returning
Sun, Aug 30, 2026•8 Day Trip
$801 USD
Returning
Mon, Aug 31, 2026•9 Day Trip
$913 USD
Returning
Tue, Sep 1, 2026•10 Day Trip
$975 USD
Returning
Wed, Sep 2, 2026•11 Day Trip
$1,198 USD
Returning
Thu, Sep 3, 2026•12 Day Trip
$782 USD
Returning
Sat, Sep 5, 2026•14 Day Trip
$893 USD