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
Saturday, December 19th, 2026
6 round-trip options
Returning
Mon, Dec 28, 2026•9 Day Trip
$1,582 USD
Returning
Tue, Dec 29, 2026•10 Day Trip
$1,576 USD
Returning
Wed, Dec 30, 2026•11 Day Trip
$1,582 USD
Returning
Thu, Dec 31, 2026•12 Day Trip
$1,576 USD
Returning
Fri, Jan 1, 2027•13 Day Trip
$1,587 USD
Returning
Sat, Jan 2, 2027•14 Day Trip
$1,576 USD