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

Friday, September 18th, 2026

5 round-trip options

Returning
Wed, Sep 23, 20265 Day Trip
$1,121 USD
Returning
Thu, Sep 24, 20266 Day Trip
$1,121 USD
Returning
Sat, Sep 26, 20268 Day Trip
$1,333 USD
Returning
Mon, Sep 28, 202610 Day Trip
$1,196 USD
Returning
Fri, Oct 2, 202614 Day Trip
$1,136 USD