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
Wednesday, December 30th, 2026
6 round-trip options
Returning
Fri, Jan 8, 2027•9 Day Trip
$956 USD
Returning
Sat, Jan 9, 2027•10 Day Trip
$956 USD
Returning
Sun, Jan 10, 2027•11 Day Trip
$956 USD
Returning
Mon, Jan 11, 2027•12 Day Trip
$956 USD
Returning
Tue, Jan 12, 2027•13 Day Trip
$956 USD
Returning
Wed, Jan 13, 2027•14 Day Trip
$962 USD