Cheap Alaska Airlines flights Philadelphia (PHL) to Ontario Intl. Airport (ONT)

Cheap Alaska Airlines flights Philadelphia (PHL) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at for one-way flights and $359 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 19 - Sat, Sep 26

PHL

Philadelphia

ONT

Ontario

$359 Roundtrip, found 14 hours ago

$359

Roundtrip

found 14 hours ago

Select Alaska Airlines flight, departing Sat, Sep 19 from Philadelphia to Ontario, returning Sat, Sep 26, priced at $359 found 14 hours ago

Sun, Sep 20 - Sun, Sep 27

PHL

Philadelphia

ONT

Ontario

$418 Roundtrip, found 14 hours ago

$418

Roundtrip

found 14 hours ago

Select Alaska Airlines flight, departing Sun, Sep 20 from Philadelphia to Ontario, returning Sun, Sep 27, priced at $418 found 14 hours ago