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

Monday, September 14th, 2026

5 round-trip options

Returning
Sat, Sep 19, 20265 Day Trip
$1,518 USD
Returning
Sun, Sep 20, 20266 Day Trip
$1,121 USD
Returning
Tue, Sep 22, 20268 Day Trip
$1,061 USD
Returning
Thu, Sep 24, 202610 Day Trip
$1,061 USD
Returning
Mon, Sep 28, 202614 Day Trip
$1,121 USD