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

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
United StatesONT

Ontario International Airport

Ontario, United States
$463 USD
-24%$354 USD
Verified 13 days ago
Good Availability
45% of dates checked are available within 10% of the lowest price

Thursday, July 9th, 2026

7 round-trip options

Returning
Wed, Jul 15, 2026•6 Day Trip
$622 USD
Google Flights
Returning
Thu, Jul 16, 2026•7 Day Trip
$710 USD
Google Flights
Returning
Sat, Jul 18, 2026•9 Day Trip
$622 USD
Google Flights
Returning
Sun, Jul 19, 2026•10 Day Trip
$651 USD
Google Flights
Returning
Tue, Jul 21, 2026•12 Day Trip
$622 USD
Google Flights
Returning
Wed, Jul 22, 2026•13 Day Trip
$622 USD
Google Flights
Returning
Thu, Jul 23, 2026•14 Day Trip
$651 USD
Google Flights