Find cheap flights from Ontario to Philadelphia starting at $50.
Book one-way or return flights from Ontario to Philadelphia from as little as $50. Choose from the popular airlines below and book your flight today!
- One way
- Round-trip
- ONT00:5525h 50m1 stopPHL05:45Sat, May 11|Ontario - Philadelphia|Frontier Airlines$50$10652% OFF52% OFF$106$50
- ONT07:1619h 29m1 stopPHL05:45Tue, May 7|Ontario - Philadelphia|Frontier Airlines$50$10652% OFF52% OFF$106$50
- ONT00:5911h 50m1 stopPHL15:49Tue, May 14|Ontario - Philadelphia|Frontier Airlines$52$10650% OFF50% OFF$106$52
- ONT00:5925h 35m1 stopPHL05:34Sat, May 18|Ontario - Philadelphia|Frontier Airlines$53$53
- ONT00:5625h 49m1 stopPHL05:45Fri, May 3|Ontario - Philadelphia|Frontier Airlines$63$63
- ONT00:598h 11m1 stopPHL12:10Tue, May 21|Ontario - Philadelphia|Frontier Airlines$69$69
- ONT07:2629h 23m1 stopPHL15:49Mon, May 6|Ontario - Philadelphia|Frontier Airlines$70$70
- ONT00:598h 11m1 stopPHL12:10Wed, May 22|Ontario - Philadelphia|Frontier Airlines$73$73
- ONT00:598h 11m1 stopPHL12:10Mon, May 20|Ontario - Philadelphia|Frontier Airlines$76$76
- ONT12:3914h 51m1 stopPHL06:30Wed, May 8|Ontario - Philadelphia|Frontier Airlines$79$79
- ONT13:003h 5mDirectPHL14:00Thu, May 9|Ontario - Philadelphia|Frontier AirlinesFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Find more flights and airlines
Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Ontario to Philadelphia.
- CheapestONT00:5525h 50m1 transferPHL05:45Ontario International Airport - Philadelphia International AirportSat, May 11Frontier Airlines$50
- ONT09:1919h 33m2 transferTTN07:52Ontario International Airport - Trenton Mercer AirportMon, May 13Frontier Airlines$83
- ONT09:1919h 33m2 transferTTN07:52Ontario International Airport - Trenton Mercer AirportMon, May 13Frontier Airlines$83Find More Flights
Frequently Asked Questions
How to find a cheap flight from Ontario to Philadelphia
Cheapest nonstop flight price | $50 |
---|---|
Cheapest round-trip ticket price | $156 |
Off-season for travel | April |
Peak season for travel | April |
Flight distance | 8,753.39km |
Popular airline | Frontier Airlines |
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