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

Sunday, July 19th, 2026

8 round-trip options

Returning
Fri, Jul 24, 2026•5 Day Trip
$597 USD
Google Flights
Returning
Sat, Jul 25, 2026•6 Day Trip
$563 USD
Google Flights
Returning
Mon, Jul 27, 2026•8 Day Trip
$526 USD
Google Flights
Returning
Tue, Jul 28, 2026•9 Day Trip
$485 USD
Google Flights
Returning
Wed, Jul 29, 2026•10 Day Trip
$485 USD
Google Flights
Returning
Thu, Jul 30, 2026•11 Day Trip
$513 USD
Google Flights
Returning
Fri, Jul 31, 2026•12 Day Trip
$499 USD
Google Flights
Returning
Sun, Aug 2, 2026•14 Day Trip
$600 USD
Google Flights