Philadelphia (PHL) to Basel Mulhouse Freiburg (BSL) flight deal in economy from $667

Friday, September 4th, 2026

5 round-trip options

Returning
Wed, Sep 9, 20265 Day Trip
$1,110 USD
Returning
Thu, Sep 10, 20266 Day Trip
$1,110 USD
Returning
Sat, Sep 12, 20268 Day Trip
$1,170 USD
Returning
Mon, Sep 14, 202610 Day Trip
$1,181 USD
Returning
Fri, Sep 18, 202614 Day Trip
$1,121 USD