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

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesONT

Ontario International Airport

Ontario, United States
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
$449 USD
-21%$354 USD
Verified 13 days ago
Good Availability
50% of dates checked are available within 10% of the lowest price

Thursday, November 5th, 2026

4 round-trip options

Returning
Wed, Nov 11, 2026•6 Day Trip
$403 USD
Google Flights
Returning
Thu, Nov 12, 2026•7 Day Trip
$403 USD
Google Flights
Returning
Sat, Nov 14, 2026•9 Day Trip
$403 USD
Google Flights
Returning
Mon, Nov 16, 2026•11 Day Trip
$403 USD
Google Flights