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 agoNovember 2026
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Great Availability
65% of dates checked are available within 10% of the lowest price
Monday, November 30th, 2026
6 round-trip options
Returning
Wed, Dec 9, 2026•9 Day Trip
$758 USD
Returning
Thu, Dec 10, 2026•10 Day Trip
$763 USD
Returning
Fri, Dec 11, 2026•11 Day Trip
$1,296 USD
Returning
Sat, Dec 12, 2026•12 Day Trip
$1,026 USD
Returning
Sun, Dec 13, 2026•13 Day Trip
$763 USD
Returning
Mon, Dec 14, 2026•14 Day Trip
$881 USD