Philadelphia (PHL) to Ontario (ONT) flight deal in economy from $354

Wednesday, August 19th, 2026

7 round-trip options

Returning
Tue, Aug 25, 20266 Day Trip
$354 USD
Returning
Wed, Aug 26, 20267 Day Trip
$389 USD
Returning
Fri, Aug 28, 20269 Day Trip
$360 USD
Returning
Sat, Aug 29, 202610 Day Trip
$383 USD
Returning
Mon, Aug 31, 202612 Day Trip
$354 USD
Returning
Tue, Sep 1, 202613 Day Trip
$354 USD
Returning
Wed, Sep 2, 202614 Day Trip
$354 USD