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$85+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ONT
Apr 29 — May 61
Tue 4/29
Tue 5/6
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 April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$178
(Frontier)

One-way from

$85
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$397
Provider with most accurate pricing for Philadelphia-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Los Angeles flights.
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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. 2% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 24, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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.
Wed 5/287:10 amPHL - ONT
1 stop7h 33mFrontier
Tue 6/36:42 pmONT - PHL
1 stop7h 28mFrontier
Deal found 4/22$176
This Trip.com deal was found by Cheapflights users on 4/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/249:55 pmLGA - ONT
1 stop14h 20mFrontier
Wed 5/285:21 pmONT - LGA
1 stop25h 49mFrontier
Deal found 4/21$198
This Frontier deal was found by Cheapflights users on 4/22. 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 5/305:40 pmPIT - ONT
1 stop9h 11mFrontier
Sun 6/112:59 amONT - PIT
1 stop12h 28mFrontier
Deal found 4/22$198
This Booking.com deal was found by Cheapflights users on 4/22. 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 4/306:59 amJFK - ONT
1 stop27h 25mFrontier
Thu 5/86:35 pmONT - JFK
1 stop7h 55mFrontier
Deal found 4/22$206
This Trip.com deal was found by Cheapflights users on 4/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/287:00 amDCA - ONT
1 stop7h 21mFrontier
Mon 4/2812:59 amONT - DCA
1 stop8h 10mFrontier
Deal found 4/23$219
This Trip.com deal was found by Cheapflights users on 4/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/287:25 amIAD - ONT
1 stop7h 18mFrontier
Sun 6/15:22 pmONT - IAD
1 stop9h 36mFrontier
Deal found 4/23$219
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:19 amEWR - ONT
1 stop9h 47mAlaska Airlines
Tue 9/233:00 pmONT - EWR
1 stop11h 59mAlaska Airlines
Deal found 4/23$262
This American Airlines deal was found by Cheapflights users on 4/23. 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 5/241:42 pmEWR - ONT
1 stop10h 23mAmerican Airlines
Fri 5/301:14 pmONT - EWR
1 stop6h 52mAmerican Airlines
Deal found 4/23$266
This JetBlue deal was found by Cheapflights users on 4/23. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:00 pmJFK - ONT
Nonstop6h 11mJetBlue
Sun 5/2510:59 pmONT - JFK
Nonstop5h 20mJetBlue
Deal found 4/23$267
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:27 amJFK - ONT
1 stop9h 39mAlaska Airlines
Tue 9/237:17 pmONT - JFK
1 stop9h 03mAlaska Airlines
Deal found 4/23$269
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 7/42:59 pmLGA - ONT
1 stop9h 34mAmerican Airlines
Mon 7/712:59 amONT - LGA
1 stop9h 05mAmerican Airlines
Deal found 4/23$277
This Delta deal was found by Cheapflights users on 4/23. 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 5/291:30 pmJFK - ONT
1 stop9h 03mDelta
Tue 8/1212:00 pmONT - JFK
1 stop10h 07mDelta
Deal found 4/23$282

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 April 24, 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

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Sat 5/24

7:10 am-4:20 pm

1 stop12h 10m

Ontario

Sat 5/31

5:21 pm-5:07 am

1 stop8h 46m

$178

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 5/30

5:40 pm-11:51 pm

1 stop9h 11m

Ontario

Sun 6/1

12:59 am-4:27 pm

1 stop12h 28m

$198

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sun 6/1

10:55 pm-9:12 am

1 stop13h 17m

Ontario

Tue 6/10

6:42 pm-10:10 pm

1 stop24h 28m

$206

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 4/30

6:59 am-7:24 am

1 stop27h 25m

Ontario

Thu 5/8

6:35 pm-5:30 am

1 stop7h 55m

$206

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Thu 5/15

7:00 am-11:15 am

1 stop7h 15m

Ontario

Tue 5/20

12:59 am-12:07 pm

1 stop8h 08m

$219

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Wed 5/28

7:25 am-11:43 am

1 stop7h 18m

Ontario

Sun 6/1

5:22 pm-5:58 am

1 stop9h 36m

$219

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 9/16

7:19 am-2:06 pm

1 stop9h 47m

Ontario

Tue 9/23

3:00 pm-5:59 am

1 stop11h 59m

$262

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 5/24

1:42 pm-9:05 pm

1 stop10h 23m

Ontario

Fri 5/30

1:14 pm-11:06 pm

1 stop6h 52m

$266

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 5/28

6:00 pm-9:11 pm

Nonstop6h 11m

Ontario

Sat 5/31

10:59 pm-7:19 am

Nonstop5h 20m

$267

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 6/3

7:29 am-3:50 pm

1 stop11h 21m

Ontario

Tue 6/10

4:45 pm-6:09 am

1 stop10h 24m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

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 $328). 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 April 24, 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated April 24, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Pennsylvania to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,918 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,393 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    $85 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Alaska Airlines and JetBlue, with prices starting from $131 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 $328). 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$131Average$264FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$152Average$193FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$268Average$527FlexibilityNo cancel feeOn-time71%
DeltaCheapest$280Average$460FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$303Average$422FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$306Average$458FlexibilityNo cancel feeOn-time69%

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