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
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Great Availability
65% of dates checked are available within 10% of the lowest price
Thursday, December 10th, 2026
6 round-trip options
Returning
Sat, Dec 19, 2026•9 Day Trip
$1,215 USD
Returning
Sun, Dec 20, 2026•10 Day Trip
$956 USD
Returning
Mon, Dec 21, 2026•11 Day Trip
$956 USD
Returning
Tue, Dec 22, 2026•12 Day Trip
$895 USD
Returning
Wed, Dec 23, 2026•13 Day Trip
$845 USD
Returning
Thu, Dec 24, 2026•14 Day Trip
$839 USD