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$47+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ONT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Pennsylvania to Ontario

Keep the following information in mind while searching for Pennsylvania to Ontario flight deals. Data was last updated September 17, 2025.

Round-trip from

$163
(Booking.com)

One-way from

$47
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$300
From Pennsylvania to Ontario
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One-way flight from Pennsylvania to Ontario
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Highest demand for flights based on searches. 6% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:17 amIAD - ONT
1 stop8h 22mFrontier
Sun 10/54:09 pmONT - IAD
1 stop14h 08mFrontier
Deal found 9/14$163
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:42 amPHL - ONT
1 stop20h 08mFrontier
Thu 10/306:53 amONT - PHL
1 stop18h 56mFrontier
Deal found 9/14$165
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:00 amPHL - ONT
1 stop13h 28mFrontier
Sun 11/96:45 amONT - PHL
1 stop19h 04mFrontier
Deal found 9/17$166
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:55 pmLGA - ONT
1 stop27h 55mFrontier
Tue 11/46:53 amONT - LGA
1 stop12h 06mFrontier
Deal found 9/15$166
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 amDCA - ONT
1 stop27h 23mFrontier
Sat 10/48:59 pmONT - DCA
1 stop12h 11mFrontier
Deal found 9/15$167
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:56 pmLGA - ONT
1 stop11h 27mFrontier
Thu 10/28:59 pmONT - LGA
1 stop22h 12mFrontier
Deal found 9/15$168
This Flybillet deal was found by Cheapflights users on 9/15. 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 Flybillet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:00 pmDCA - ONT
1 stop8h 50mFrontier
Sat 11/86:53 amONT - DCA
1 stop12h 06mFrontier
Deal found 9/15$168
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:00 pmLGA - ONT
1 stop11h 42mFrontier
Thu 11/136:53 amONT - LGA
1 stop12h 07mFrontier
Deal found 9/15$169
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:00 amDCA - ONT
1 stop29h 35mFrontier
Tue 10/217:04 amONT - DCA
1 stop6h 55mFrontier
Deal found 9/15$169
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:00 pmLGA - ONT
1 stop12h 49mFrontier
Thu 10/307:39 amONT - LGA
1 stop10h 25mFrontier
Deal found 9/15$171
This Frontier deal was found by Cheapflights users on 9/15. 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 10/2510:55 pmLGA - ONT
1 stop13h 40mFrontier
Sun 11/25:53 amONT - LGA
1 stop12h 07mFrontier
Deal found 9/15$176
This Frontier deal was found by Cheapflights users on 9/15. 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.
Thu 10/3010:00 pmLGA - ONT
1 stop12h 29mFrontier
Thu 11/66:53 amONT - LGA
1 stop12h 07mFrontier
Deal found 9/15$177

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 September 17, 2025.
Use the filters below to find and compare flights from Pennsylvania to Ontario that are best for you.

Fly from

Pennsylvania

Fly to

Ontario

Route

Depart

Return

Price

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Fri 10/17

6:31 pm-11:50 pm

1 stop8h 19m

Ontario

Sat 10/25

7:04 am-4:59 pm

1 stop6h 55m

$177

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 9/30

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Tue 10/7

10:56 pm-7:18 am

Nonstop5h 22m

$217

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 10/18

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Wed 10/22

10:56 pm-7:18 am

Nonstop5h 22m

$232

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 10/8

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Tue 10/14

10:56 pm-7:18 am

Nonstop5h 22m

$247

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 10/22

7:00 am-12:13 pm

1 stop8h 13m

Ontario

Sat 10/25

5:05 am-5:20 pm

1 stop9h 15m

$249

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 10/8

6:15 am-12:13 pm

1 stop8h 58m

Ontario

Mon 10/20

6:27 pm-5:40 am

1 stop8h 13m

$252

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 10/2

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Sat 10/11

10:56 pm-7:18 am

Nonstop5h 22m

$253

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 11/12

2:30 pm-8:55 pm

2 stops9h 25m

Ontario

Sat 11/15

10:45 am-10:40 pm

1 stop8h 55m

$254

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 9/30

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Wed 10/8

10:56 pm-7:18 am

Nonstop5h 22m

$257

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 9/24

7:15 am-2:40 pm

1 stop10h 25m

Ontario

Mon 9/29

10:35 am-10:50 pm

1 stop9h 15m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results
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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, August is the cheapest month in which you can book a flight from Pennsylvania to Ontario (average of $246). Flying from Pennsylvania to Ontario in March is currently the most expensive (average of $327). 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.

What is the cheapest time of day to fly from PA to ONT?

Find hourly flight availability from Pennsylvania to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Pennsylvania to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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?

    Frontier, JetBlue, and United Airlines can get you from Pennsylvania to Ontario in just under 5h 54m. Your travel time can differ by up to 2h 25m. 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?

    $123 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on JetBlue and United Airlines, with prices starting from $129 and $134, respectively.

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

    Most travelers choose New York John F Kennedy Intl - Ontario, Newark - Ontario or New York LaGuardia - 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, August is the cheapest month in which you can book a flight from Pennsylvania to Ontario (average of $246). Flying from Pennsylvania to Ontario in March is currently the most expensive (average of $327). 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.
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Top 6 airlines flying from Pennsylvania to Ontario

Discover the top 6 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$264FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$166Average$218FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$268Average$430FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$474FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$301Average$438FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$305Average$471FlexibilityNo cancel feeOn-time69%

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