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

Sunday, December 20th, 2026

7 round-trip options

Returning
Sat, Dec 26, 2026•6 Day Trip
$422 USD
Google Flights
Returning
Sun, Dec 27, 2026•7 Day Trip
$446 USD
Google Flights
Returning
Mon, Dec 28, 2026•8 Day Trip
$387 USD
Google Flights
Returning
Wed, Dec 30, 2026•10 Day Trip
$387 USD
Google Flights
Returning
Fri, Jan 1, 2027•12 Day Trip
$474 USD
Google Flights
Returning
Sat, Jan 2, 2027•13 Day Trip
$562 USD
Google Flights
Returning
Sun, Jan 3, 2027•14 Day Trip
$525 USD
Google Flights