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

Tuesday, August 4th, 2026

7 round-trip options

Returning
Mon, Aug 10, 20266 Day Trip
$438 USD
Returning
Tue, Aug 11, 20267 Day Trip
$432 USD
Returning
Thu, Aug 13, 20269 Day Trip
$461 USD
Returning
Fri, Aug 14, 202610 Day Trip
$482 USD
Returning
Sun, Aug 16, 202612 Day Trip
$516 USD
Returning
Mon, Aug 17, 202613 Day Trip
$467 USD
Returning
Tue, Aug 18, 202614 Day Trip
$432 USD