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, December 21st, 2026

7 round-trip options

Returning
Sun, Dec 27, 2026•6 Day Trip
$597 USD
Google Flights
Returning
Mon, Dec 28, 2026•7 Day Trip
$516 USD
Google Flights
Returning
Tue, Dec 29, 2026•8 Day Trip
$597 USD
Google Flights
Returning
Thu, Dec 31, 2026•10 Day Trip
$516 USD
Google Flights
Returning
Sat, Jan 2, 2027•12 Day Trip
$691 USD
Google Flights
Returning
Sun, Jan 3, 2027•13 Day Trip
$654 USD
Google Flights
Returning
Mon, Jan 4, 2027•14 Day Trip
$516 USD
Google Flights