Seattle / Tacoma (SEA) to Basel Mulhouse Freiburg (BSL) flight deal in economy from $728

Air FranceAFAir FranceDelta Air LinesDLDelta Air LinesKLMKLKLM
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
FranceBSL

Euro Airport Basel-Mulhouse-Freiburg

Basel Mulhouse Freiburg, France
$975 USD
-25%$728 USD
Verified 13 days ago
Fair Availability
36% of dates checked are available within 10% of the lowest price

Monday, June 29th, 2026

0 round-trip options

No flight details available for this date.