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

Saturday, July 18th, 2026

7 round-trip options

Returning
Fri, Jul 24, 2026•6 Day Trip
$563 USD
Google Flights
Returning
Sat, Jul 25, 2026•7 Day Trip
$534 USD
Google Flights
Returning
Mon, Jul 27, 2026•9 Day Trip
$456 USD
Google Flights
Returning
Tue, Jul 28, 2026•10 Day Trip
$462 USD
Google Flights
Returning
Thu, Jul 30, 2026•12 Day Trip
$456 USD
Google Flights
Returning
Fri, Jul 31, 2026•13 Day Trip
$465 USD
Google Flights
Returning
Sat, Aug 1, 2026•14 Day Trip
$456 USD
Google Flights