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 14 days ago
Good Availability
50% of dates checked are available within 10% of the lowest price

Monday, November 30th, 2026

4 round-trip options

Returning
Sun, Dec 6, 2026•6 Day Trip
$521 USD
Google Flights
Returning
Mon, Dec 7, 2026•7 Day Trip
$521 USD
Google Flights
Returning
Wed, Dec 9, 2026•9 Day Trip
$521 USD
Google Flights
Returning
Fri, Dec 11, 2026•11 Day Trip
$521 USD
Google Flights