Basel Mulhouse Freiburg (BSL) to Seattle / Tacoma (SEA) flight deal in economy from $752
BSLEuro Airport Basel-Mulhouse-Freiburg
Basel Mulhouse Freiburg, France
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$858 USD
-12%$752 USD
Verified 16 days agoDecember 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Great Availability
65% of dates checked are available within 10% of the lowest price
Friday, December 4th, 2026
6 round-trip options
Returning
Sun, Dec 13, 2026•9 Day Trip
$758 USD
Returning
Mon, Dec 14, 2026•10 Day Trip
$875 USD
Returning
Tue, Dec 15, 2026•11 Day Trip
$1,128 USD
Returning
Wed, Dec 16, 2026•12 Day Trip
$1,066 USD
Returning
Thu, Dec 17, 2026•13 Day Trip
$1,173 USD
Returning
Fri, Dec 18, 2026•14 Day Trip
$1,741 USD