PHL to ONT from $354 in economy

UAUnited Airlines

Round Trip•Economy

PHL

Philadelphia International Airport

Philadelphia, United States

ONT

Ontario International Airport

Ontario, United States

$463 USD

-24%$354 USD

Verified 13 days ago

July 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29 30 1 2 3 4 5$854 6$622 7$534 8$534 9$622 10$622 11$534 12$553 13$544 14$456 15$456 16$544 17$544 18$456 19$485 20$485 21$450 22$450 23$503 24$473 25$444 26$518 27$407 28$366 29$366 30$394 31$380 1$498 2$481

Good Availability

45% of dates checked are available within 10% of the lowest price

Monday, July 20th, 2026

7 round-trip options

Returning

Sun, Jul 26, 2026•6 Day Trip

$494 USD

Google Flights

Returning

Mon, Jul 27, 2026•7 Day Trip

$485 USD

Google Flights

Returning

Wed, Jul 29, 2026•9 Day Trip

$485 USD

Google Flights

Returning

Thu, Jul 30, 2026•10 Day Trip

$485 USD

Google Flights

Returning

Sat, Aug 1, 2026•12 Day Trip

$485 USD

Google Flights

Returning

Sun, Aug 2, 2026•13 Day Trip

$521 USD

Google Flights

Returning

Mon, Aug 3, 2026•14 Day Trip

$485 USD

Google Flights

Philadelphia (PHL) to Ontario (ONT) flight deal in economy from $354

Philadelphia International Airport

Ontario International Airport

July 2026

Monday, July 20th, 2026