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

Sunday, October 18th, 2026

10 round-trip options

Returning
Fri, Oct 23, 2026•5 Day Trip
$1,795 USD
Google Flights
Returning
Sat, Oct 24, 2026•6 Day Trip
$1,071 USD
Google Flights
Returning
Sun, Oct 25, 2026•7 Day Trip
$852 USD
Google Flights
Returning
Mon, Oct 26, 2026•8 Day Trip
$852 USD
Google Flights
Returning
Tue, Oct 27, 2026•9 Day Trip
$792 USD
Google Flights
Returning
Wed, Oct 28, 2026•10 Day Trip
$792 USD
Google Flights
Returning
Thu, Oct 29, 2026•11 Day Trip
$792 USD
Google Flights
Returning
Fri, Oct 30, 2026•12 Day Trip
$802 USD
Google Flights
Returning
Sat, Oct 31, 2026•13 Day Trip
$852 USD
Google Flights
Returning
Sun, Nov 1, 2026•14 Day Trip
$810 USD
Google Flights