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, December 10th, 2026

7 round-trip options

Returning
Wed, Dec 16, 2026•6 Day Trip
$489 USD
Google Flights
Returning
Thu, Dec 17, 2026•7 Day Trip
$436 USD
Google Flights
Returning
Fri, Dec 18, 2026•8 Day Trip
$400 USD
Google Flights
Returning
Sun, Dec 20, 2026•10 Day Trip
$494 USD
Google Flights
Returning
Tue, Dec 22, 2026•12 Day Trip
$581 USD
Google Flights
Returning
Wed, Dec 23, 2026•13 Day Trip
$354 USD
Google Flights
Returning
Thu, Dec 24, 2026•14 Day Trip
$354 USD
Google Flights