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

Monday, October 19th, 2026

6 round-trip options

Returning
Sun, Oct 25, 2026•6 Day Trip
$521 USD
Google Flights
Returning
Mon, Oct 26, 2026•7 Day Trip
$419 USD
Google Flights
Returning
Thu, Oct 29, 2026•10 Day Trip
$387 USD
Google Flights
Returning
Fri, Oct 30, 2026•11 Day Trip
$476 USD
Google Flights
Returning
Sat, Oct 31, 2026•12 Day Trip
$387 USD
Google Flights
Returning
Sun, Nov 1, 2026•13 Day Trip
$436 USD
Google Flights