HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$83+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ONT
Jul 16 — Jul 231
Thu 7/16
Thu 7/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pennsylvania to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 16, 2026.

This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:11 am
JFK
-
ONT
2 stops12h 48m
American Airlines
Tue 7/217:00 am
ONT
-
JFK
1 stop7h 56m
American Airlines
Deal found 6/15$297
This Delta deal was found by Cheapflights users on 6/13. 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.
Sat 10/246:00 am
LGA
-
ONT
1 stop8h 27m
Delta
Tue 10/2712:00 pm
ONT
-
LGA
1 stop7h 42m
Delta
Deal found 6/13$297
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 6/11$302
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 9/36:54 am
JFK
-
ONT
1 stop9h 37m
American Airlines
Fri 9/1110:25 am
ONT
-
JFK
1 stop8h 05m
American Airlines
Deal found 6/12$303
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:05 am
LGA
-
ONT
1 stop9h 25m
Southwest
Sun 8/911:55 pm
ONT
-
LGA
1 stop8h 30m
Southwest
Deal found 6/11$303
This Super.com deal was found by Cheapflights users on 6/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Mon 8/2411:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 6/14$304
This Frontier deal was found by Cheapflights users on 6/15. 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.
Fri 7/2410:55 pm
LGA
-
ONT
1 stop12h 42m
Frontier
Sun 7/268:17 am
ONT
-
LGA
1 stop10h 43m
Frontier
Deal found 6/15$304
This Super.com deal was found by Cheapflights users on 6/11. 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.
Thu 8/277:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Tue 9/811:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 6/11$305
This Delta deal was found by Cheapflights users on 6/11. 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 9/225:40 pm
PIT
-
ONT
1 stop8h 57m
Delta
Tue 9/297:05 am
ONT
-
PIT
1 stop8h 21m
Delta
Deal found 6/11$305
This Super.com deal was found by Cheapflights users on 6/11. 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 9/165:15 pm
JFK
-
ONT
Nonstop5h 58m
JetBlue
Tue 9/229:10 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 6/11$306
This Super.com deal was found by Cheapflights users on 6/11. 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.
Thu 7/239:50 am
IAD
-
ONT
1 stop9h 04m
Frontier
Mon 7/273:40 pm
ONT
-
IAD
1 stop13h 40m
Frontier
Deal found 6/11$306
This Super.com deal was found by Cheapflights users on 6/12. 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 7/111:06 am
PHL
-
ONT
1 stop11h 45m
Frontier
Sat 7/43:34 pm
ONT
-
PHL
1 stop11h 53m
Frontier
Deal found 6/12$307

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 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Delta)

One-way from

$83
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$492
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 ($56 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 16, 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

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sat 12/12

1:45 pm-6:18 pm

1 stop7h 33m

Ontario

Sat 2/20

7:00 am-4:57 pm

1 stop6h 57m

$317

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sun 9/20

6:00 am-10:47 am

1 stop7h 47m

Ontario

Wed 9/30

11:59 am-9:41 pm

1 stop6h 42m

$324

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sat 10/17

6:00 am-11:27 am

1 stop8h 27m

Ontario

Tue 10/20

12:00 pm-10:15 pm

1 stop7h 15m

$331

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 7/9

6:00 am-10:38 am

1 stop7h 38m

Ontario

Sun 7/12

10:00 pm-8:10 am

1 stop7h 10m

$333

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Fri 8/14

6:00 am-10:42 am

1 stop7h 42m

Ontario

Fri 9/4

12:00 pm-10:44 pm

1 stop7h 44m

$337

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 8/18

7:30 pm-10:35 pm

Nonstop6h 05m

Ontario

Wed 8/19

11:50 pm-8:11 am

Nonstop5h 21m

$345

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 8/18

7:30 pm-10:35 pm

Nonstop6h 05m

Ontario

Thu 8/20

11:50 pm-8:11 am

Nonstop5h 21m

$345

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Wed 8/12

6:00 am-10:42 am

1 stop7h 42m

Ontario

Sun 8/30

10:00 pm-9:10 am

1 stop8h 10m

$347

HarrisburgOntario

MDT - ONT

MDTONT

Harrisburg

Tue 10/20

5:54 pm-10:49 pm

1 stop7h 55m

Ontario

Sat 10/24

7:00 am-4:52 pm

1 stop6h 52m

$351

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Fri 8/14

6:15 am-10:42 am

1 stop7h 27m

Ontario

Tue 8/18

6:00 am-5:47 pm

1 stop8h 47m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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.

Weekly flight availability from Pennsylvania to Ontario

Explore weekly flight availability from Pennsylvania to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 16, 2026.

The most flights from USPA to ONT are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 54 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?

    Delta, JetBlue, and United Airlines can get you from Pennsylvania to Ontario in just under 6h 05m. Your travel time can differ by up to 1h 50m. 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 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, 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
LaGuardia to San Francisco flights
Newark to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Dallas/Fort Worth to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
O'Hare Intl to Las Vegas flights
Seattle to Las Vegas flights
Seattle to Los Angeles flights
San Francisco to Las Vegas flights
Atlanta to Las Vegas flights
Hobby to Las Vegas flights
Los Angeles to Las Vegas flights
Hobby to Los Angeles flights
LaGuardia to Los Angeles flights
Dulles Intl to Las Vegas flights
Dallas/Fort Worth to San Francisco flights
George Bush Intcntl to Las Vegas flights
Atlanta to Los Angeles flights
O'Hare Intl to Los Angeles flights
Seattle to Ontario flights
Reagan-National to Los Angeles flights
Detroit to Las Vegas flights
San Francisco to Los Angeles flights
Dulles Intl to Los Angeles flights
LaGuardia to Las Vegas flights
Orlando to Las Vegas flights
Baltimore to Los Angeles flights
San Francisco to Ontario flights
Denver to Las Vegas flights
Dallas/Fort Worth to Ontario flights
Seattle to San Francisco flights
George Bush Intcntl to Los Angeles flights
John F Kennedy Intl to Ontario flights
Newark to San Jose flights
Los Angeles to San Francisco flights
Baltimore to Las Vegas flights
O'Hare Intl to San Francisco flights
Boston to Las Vegas flights
Dulles Intl to San Francisco flights
Newark to San Diego flights
Reagan-National to Las Vegas flights
John F Kennedy Intl to Oakland flights
John F Kennedy Intl to San Jose flights
Seattle to San Diego flights
Fort Lauderdale to Las Vegas flights
Dallas/Fort Worth to San Diego flights

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 16, 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%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.