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, September 24th, 2026

6 round-trip options

Returning
Wed, Sep 30, 2026•6 Day Trip
$354 USD
Google Flights
Returning
Thu, Oct 1, 2026•7 Day Trip
$354 USD
Google Flights
Returning
Sun, Oct 4, 2026•10 Day Trip
$387 USD
Google Flights
Returning
Mon, Oct 5, 2026•11 Day Trip
$387 USD
Google Flights
Returning
Tue, Oct 6, 2026•12 Day Trip
$354 USD
Google Flights
Returning
Wed, Oct 7, 2026•13 Day Trip
$354 USD
Google Flights