Seattle / Tacoma (SEA) to Basel Mulhouse Freiburg (BSL) flight deal in economy from $728
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
BSLEuro Airport Basel-Mulhouse-Freiburg
Basel Mulhouse Freiburg, France
$975 USD
-25%$728 USD
Verified 13 days agoDecember 2026
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Fair Availability
36% of dates checked are available within 10% of the lowest price
Sunday, December 20th, 2026
10 round-trip options
Returning
Fri, Dec 25, 2026•5 Day Trip
$1,762 USD
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Sat, Dec 26, 2026•6 Day Trip
$1,469 USD
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Sun, Dec 27, 2026•7 Day Trip
$1,301 USD
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Mon, Dec 28, 2026•8 Day Trip
$1,203 USD
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Tue, Dec 29, 2026•9 Day Trip
$1,496 USD
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Wed, Dec 30, 2026•10 Day Trip
$1,405 USD
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Thu, Dec 31, 2026•11 Day Trip
$1,495 USD
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Fri, Jan 1, 2027•12 Day Trip
$1,499 USD
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Sat, Jan 2, 2027•13 Day Trip
$1,566 USD
Returning
Sun, Jan 3, 2027•14 Day Trip
$1,789 USD