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Cheap flights from Ontario (ONT) to Philadelphia (PHL)

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How to find the cheapest flight from Ontario (ONT) to Philadelphia (PHL)

How to find the cheapest flight from Ontario (ONT) to Philadelphia (PHL)
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How to find the cheapest flight from Ontario (ONT) to Philadelphia (PHL)
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How to find the cheapest flight from Ontario (ONT) to Philadelphia (PHL)
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Cheap flights from Ontario to Philadelphia in February , March 2026

26 Feb - 02 Mar $ 287.00
ONT
Ontario
Frontier Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
Frontier Airlines
1 STOPS
ONT
Ontario
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06 Feb - 05 Mar $ 778.00
ONT
Ontario
Alaska Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
1 STOPS
ONT
Ontario
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08 Feb - 11 Mar $ 952.00
ONT
Ontario
Hawaiian Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
Hawaiian Airlines
2 STOPS
ONT
Ontario
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Last minute flights from Ontario to Philadelphia

26 Feb - 28 Feb $ 297.00
ONT
Ontario
Frontier Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
Frontier Airlines
2 STOPS
ONT
Ontario
Pick dates
06 Feb - 01 Mar $ 780.00
ONT
Ontario
Alaska Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
06 Feb - 01 Mar $ 933.00
ONT
Ontario
Hawaiian Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
Hawaiian Airlines
2 STOPS
ONT
Ontario
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One-way flights to Philadelphia from Ontario

6:05 AM - 11:05 AM
Frontier Airlines
1 Stops
7h 32m
ONT - PHL
$ 143
Kiwi
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6:00 AM - 12:25 PM
Frontier Airlines
1 Stops
8h 55m
ONT - PHL
$ 292
Kiwi
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1:45 PM - 5:50 PM
United Airlines
1 Stops
6h 38m
ONT - PHL
$ 449
Kiwi
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How to find the cheapest flight from Ontario (ONT) to Philadelphia (PHL)

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How to find the cheapest flight from Ontario (ONT) to Philadelphia (PHL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Philadelphia (PHL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.