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$97+ Cheap flights from Pennsylvania to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ONT
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
1 adult, Economy
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Cheap flight deals from Pennsylvania to Ontario

Cheapest flights from Pennsylvania to Ontario
Explore the most affordable flight options available from Pennsylvania to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2026.

This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
JFK
-
ONT
1 stop7h 38m
Delta
Wed 7/151:00 pm
ONT
-
JFK
1 stop7h 47m
Delta
Deal found 6/9$297
This American Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:30 am
LGA
-
ONT
1 stop10h 23m
American Airlines
Sat 8/2910:29 am
ONT
-
LGA
1 stop9h 01m
American Airlines
Deal found 6/8$297
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:00 pm
ABE
-
ONT
1 stop8h 18m
Delta
Sat 10/2412:00 pm
ONT
-
ABE
1 stop7h 46m
Delta
Deal found 6/10$297
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
JFK
-
ONT
1 stop7h 42m
Delta
Sun 9/1310:59 pm
ONT
-
JFK
1 stop8h 16m
Delta
Deal found 6/8$298
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
LGA
-
ONT
1 stop7h 47m
Delta
Sun 9/2010:00 pm
ONT
-
LGA
1 stop9h 38m
Delta
Deal found 6/8$298
This Super.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:59 pm
JFK
-
ONT
Nonstop6h 06m
JetBlue
Mon 9/711:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 6/7$301
This Cheapflightsfares deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Mon 8/2411:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 6/8$302
This Super.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Mon 8/2411:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 6/5$303
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:00 am
LGA
-
ONT
1 stop7h 40m
Delta
Mon 9/1411:59 am
ONT
-
LGA
1 stop7h 42m
Delta
Deal found 6/7$303
This Super.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Tue 8/2511:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 6/9$304
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am
PIT
-
ONT
1 stop10h 01m
United Airlines
Tue 9/297:00 am
ONT
-
PIT
1 stop6h 57m
United Airlines
Deal found 6/8$305
This Frontier deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2711:00 am
PHL
-
ONT
1 stop11h 51m
Frontier
Mon 7/63:40 pm
ONT
-
PHL
1 stop11h 20m
Frontier
Deal found 6/8$306

Find flight deals from Pennsylvania to Ontario

Keep the following information in mind while searching for Pennsylvania to Ontario flight deals. Data was last updated June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Delta)

One-way from

$97
(Trip.com)

Popular in

December

Cheapest in

July

Average price

$488
Provider with most accurate pricing for Philadelphia-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Los Angeles flights.
Search Deals
From Pennsylvania to Ontario
Search Deals
One-way flight from Pennsylvania to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
Use the filters below to find and compare flights from Pennsylvania to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/22

10:45 am-8:01 pm

2 stops12h 16m

Ontario

Tue 9/29

7:00 am-4:57 pm

1 stop6h 57m

$310

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Tue 10/27

1:45 pm-6:18 pm

1 stop7h 33m

Ontario

Thu 11/12

12:00 pm-10:15 pm

1 stop7h 15m

$331

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sat 7/4

6:00 am-10:40 am

1 stop7h 40m

Ontario

Thu 7/9

11:48 am-10:48 pm

1 stop8h 00m

$331

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Wed 7/1

5:42 pm-10:51 pm

1 stop8h 09m

Ontario

Sat 7/11

6:10 am-4:30 pm

1 stop7h 20m

$331

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 7/4

6:52 pm-10:01 pm

Nonstop6h 09m

Ontario

Sun 7/12

11:58 pm-8:20 am

Nonstop5h 22m

$345

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 8/6

10:40 am-4:10 pm

1 stop8h 30m

Ontario

Thu 8/13

12:25 pm-10:55 pm

1 stop7h 30m

$349

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Thu 7/9

7:30 am-12:10 pm

1 stop7h 40m

Ontario

Mon 7/13

6:01 pm-5:29 am

1 stop8h 28m

$359

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Thu 7/9

6:00 am-10:38 am

1 stop7h 38m

Ontario

Sun 7/12

11:48 am-10:48 pm

1 stop8h 00m

$361

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 7/23

7:40 pm-10:44 pm

Nonstop6h 04m

Ontario

Wed 7/29

11:51 pm-8:13 am

Nonstop5h 22m

$363

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 8/5

7:29 pm-10:35 pm

Nonstop6h 06m

Ontario

Tue 8/11

11:50 pm-8:11 am

Nonstop5h 21m

$363

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Pennsylvania to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Pennsylvania with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Pennsylvania to Ontario

What is the cheapest month to book a flight from Pennsylvania to Ontario?

Currently, May is the cheapest month in which you can book a flight from Pennsylvania to Ontario (average of $80). Flying from Pennsylvania to Ontario in March is currently the most expensive (average of $341). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Pennsylvania to Ontario?

How far ahead should I book a flight from Pennsylvania to Ontario?

To ensure you get the cheapest price possible for a flight from Pennsylvania to Ontario, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Pennsylvania?

    Ontario (ONT) is the airport you will fly into if you book a flight from Pennsylvania to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

  • How long is the flight from Pennsylvania to Ontario?

    United Airlines, JetBlue, and Delta can get you from Pennsylvania to Ontario in just under 6h 09m. Your travel time can differ by up to 6h 07m. Pennsylvania and Ontario are separated by a distance of 2422 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Pennsylvania to Ontario one-way?

    $72 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Southwest, with prices starting from $131 and $148, respectively.

  • What are the most popular routes from Pennsylvania to Ontario?

    Most travelers choose New York John F Kennedy Intl - Ontario, Newark - Ontario or Washington, D.C. Dulles Intl - Ontario when deciding on the best route from Pennsylvania to Ontario.

  • Can I find deals for flights from Pennsylvania to Ontario that include hotel bookings?

    Yes. In addition to deals on Pennsylvania to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pennsylvania to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Ontario.

  • Can I find deals for business class flights from Pennsylvania to Ontario?

    Yes. Cheapflights offers flight deals from Pennsylvania to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Pennsylvania to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Pennsylvania to Ontario (average of $80). Flying from Pennsylvania to Ontario in March is currently the most expensive (average of $341). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Pennsylvania to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to San Francisco flights
Newark to San Francisco flights
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Top 5 airlines flying from Pennsylvania to Ontario

Discover the top 5 airlines that operate flights from Pennsylvania to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$155Average$349FlexibilityNo cancel feeOn-time62%
DeltaCheapest$256Average$436FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$290Average$493FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$300Average$439FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$350Average$507FlexibilityNo cancel feeOn-time63%

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