Cheap Flights from Ontario, CA to Philadelphia, PA from $109

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On Cheapflightsplus.com you will find 156 connecting flights from Ontario to Philadelphia. You can compare airfare deals from 4 airlines and multiple travel sites from $109, book and save on cheap plane tickets and last minute offers. Also check out ONT-PHL flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Ontario to Philadelphia Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $109 (one-way), $187 (round-trip).

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Best Flights from Ontario to Philadelphia Today

Take a look at the list of non stop flights and flights with layovers from Ontario to Philadelphia with the lowest price of $109. Take a look at the list of flights with layovers from Ontario to Philadelphia from $109. There’re no direct flights. The fastest connecting flight – 6h 45m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $109 Find flight	17:14 Ontario Ontario Int.	05:49+1 день Philadelphia Philadelphia Int.	9h 35m layover 3h 26m - Las Vegas	Frontier Airlines	F91358 F91602
from $130 Find flight	07:00 Ontario Ontario Int.	05:49+1 день Philadelphia Philadelphia Int.	19h 49m layover 13h 43m - Las Vegas	Frontier Airlines	F92232 F91602

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 15, 2025

Flight Schedule Ontario (California) to Philadelphia (Pennsylvania)

Full flight schedule will help you in detecting at what time planes fly from Ontario to Philadelphia. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
00:59 — 05:09 +1 day	00:59 — 04:19 F91500 Frontier Airlines Ontario — Denver 19h 11m stop 23:30 — 05:09 F93340 Frontier Airlines Denver — Philadelphia	25h 10m including layover	Find flight from$116
00:59 — 22:09	00:59 — 04:19 F91500 Frontier Airlines Ontario — Denver 12h 6m stop 16:25 — 22:09 F93266 Frontier Airlines Denver — Philadelphia	18h 10m including layover	Find flight from$145
05:05 — 15:35	05:05 — 08:23 UA1575 United Airlines Ontario — Denver 1h 33m stop 10:25 — 16:04 UA2679 United Airlines Denver — Philadelphia	7h 30m including layover	Find flight from$228
06:10 — 17:22	06:10 — 07:37 UA277 United Airlines Ontario — San Francisco 1h 18m stop 08:55 — 17:22 UA706 United Airlines San Francisco — Philadelphia	8h 12m including layover	Find flight from$228
07:00 — 05:49 +1 day	06:00 — 07:13 F92232 Frontier Airlines Ontario — Las Vegas 13h 43m stop 21:54 — 05:49 F91602 Frontier Airlines Las Vegas — Philadelphia	19h 49m including layover	Find flight from$130
07:00 — 17:36	07:00 — 13:03 UA356 United Airlines Ontario — Chicago 1h 17m stop 14:20 — 17:36 UA1617 United Airlines Chicago — Philadelphia	7h 36m including layover	Find flight from$228
07:02 — 17:35	07:00 — 13:03 UA2226 United Airlines Ontario — Chicago 1h 10m stop 14:15 — 17:35 UA1617 United Airlines Chicago — Philadelphia	7h 33m including layover	Find flight from$223
13:15 — 23:06	13:15 — 16:32 UA1417 United Airlines Ontario — Denver 1h stop 17:31 — 23:06 UA360 United Airlines Denver — Philadelphia	6h 51m including layover	Find flight from$223
13:19 — 23:30	13:15 — 16:32 UA1697 United Airlines Ontario — Denver 1h 13m stop 17:49 — 23:30 UA360 United Airlines Denver — Philadelphia	7h 11m including layover	Find flight from$226
17:14 — 05:49 +1 day	12:28 — 13:49 F91358 Frontier Airlines Ontario — Las Vegas 3h 26m stop 22:46 — 06:49 F91602 Frontier Airlines Las Vegas — Philadelphia	9h 35m including layover	Find flight from$109
17:21 — 05:09 +1 day	17:21 — 20:44 F92908 Frontier Airlines Ontario — Denver 2h 46m stop 23:30 — 05:09 F93340 Frontier Airlines Denver — Philadelphia	8h 48m including layover	Find flight from$111
17:21 — 22:09 +1 day	17:21 — 20:44 F92908 Frontier Airlines Ontario — Denver 19h 41m stop 16:25 — 22:09 F93266 Frontier Airlines Denver — Philadelphia	25h 48m including layover	Find flight from$160
18:36 — 05:26 +1 day	18:30 — 19:49 UA393 United Airlines Ontario — San Francisco 1h 9m stop 21:05 — 05:26 UA2110 United Airlines San Francisco — Philadelphia	7h 50m including layover	Find flight from$223
18:38 — 05:35 +1 day	18:31 — 21:50 UA368 United Airlines Ontario — Denver 2h 4m stop 23:59 — 05:37 UA1218 United Airlines Denver — Philadelphia	7h 57m including layover	Find flight from$226
19:36 — 05:49 +1 day	19:22 — 20:35 F94758 Frontier Airlines Ontario — Las Vegas 1h 12m stop 21:54 — 05:49 F91602 Frontier Airlines Las Vegas — Philadelphia	7h 13m including layover	Find flight from$140

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on September 15, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Ontario to Philadelphia depends on and how to choose the most interesting flight option for you.

Distance between Ontario and Philadelphia is 3783 miles. Time difference between the cities is 3h. Airplanes depart 00:59 to 19:36 from 2 Ontario airports and arrive 00:59 to 19:36 to 4 Philadelphia airports. Average flight time is 15h 21m.

The fastest flight 6h 45m
Average flight time 15h 21m
The earliest flight 00:59
The latest flight 19:36
Distance 2351 ml

The cheapest months to travel to Philadelphia are july (from 109 $), august (from 111 $), february (from 211 $).

The most expensive months are november (from 587 $), december (from 254 $), september (from 231 $).

What is the lowest airfare Ontario to Philadelphia?

The cheapest plane ticket found by our users is $109. This airfare is for economy class on one-way F91358 flight by Frontier Airlines for July 6, 2025 which leaves Ontario Int. in Ontario at 17:14 am and arrives at Philadelphia Philadelphia Int. at 05:49.

Economy class

$109

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Business class

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First class

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Popular Airlines on the Route

The flight Ontario — Philadelphia is served by 4 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Alaska Airlines - 47 departures per week at the price of from $ 238 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 784.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 156 flights with layovers on the route. The fastest connecting flight is UA1942 by United Airlines takes 6h 45m and the cheapest is F91358 by Frontier Airlines for $109.

AS - Alaska Airlines

from $238

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F9 - Frontier Airlines

from $109

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HA - Hawaiian Airlines

from $230

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UA - United Airlines

from $223

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Airports

You can fly from Ontario to Philadelphia from 2 airports (Ontario Int., International Heliport).

Ontario airports

Ontario Int.-ONT

from $109
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International Heliport-JIO

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Philadelphia airports

Philadelphia Int.-PHL

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North Philadelphia-PNE

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Mustin Alf-MUV

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Philadelphia Sea Plane Base-PSQ

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Airplanes

There are flights to Philadelphia from Ontario by 4 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Ontario

You may also consider searching for discounted plane tickets to some other popular places from Ontario within United States.

Ontario — Phoenix

from $56

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Ontario — Denver

from $65

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Ontario — Austin

from $67

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Ontario — Miami

from $62

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Ontario — Tucson

from $80

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Ontario — Las Vegas

from $63

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Ontario — Seattle

from $65

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Ontario — Boise

from $70

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Ontario — Chicago

from $78

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Ontario — Philadelphia

from $62

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Top International Destinations from Ontario

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Ontario — London

from $62

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Ontario — San Jose

from $61

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Ontario — Guadalajara

from $70

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Ontario — Cancun

from $74

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How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
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That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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