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$108+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ONT
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$223
(Trip.com)

One-way from

$109
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$415
Provider with most accurate pricing for Philadelphia-Los Angeles flight deals.
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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. 1% potential increase in price ($5 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 March 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 March 28, 2025.

This Trip.com deal was found by Cheapflights users on 3/27. 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 4/98:00 amPHL - ONT
1 stop10h 04mFrontier
Tue 4/2910:44 amONT - PHL
1 stop17h 03mFrontier
Deal found 3/27$223
This Trip.com deal was found by Cheapflights users on 3/26. 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 4/1910:59 pmLGA - ONT
1 stop11h 30mFrontier
Mon 4/216:03 pmONT - LGA
1 stop24h 57mFrontier
Deal found 3/26$228
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 4/237:00 amDCA - ONT
1 stop7h 20mFrontier
Fri 4/2512:11 pmONT - DCA
1 stop6h 48mFrontier
Deal found 3/27$236
This Frontier deal was found by Cheapflights users on 3/27. 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.
Tue 5/66:59 amJFK - ONT
1 stop8h 09mFrontier
Sat 5/176:47 pmONT - JFK
1 stop14h 12mFrontier
Deal found 3/27$238
This Frontier deal was found by Cheapflights users on 3/27. 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 5/28:01 amIAD - ONT
1 stop8h 15mFrontier
Fri 5/92:28 pmONT - IAD
1 stop13h 03mFrontier
Deal found 3/27$238
This JetBlue deal was found by Cheapflights users on 3/27. 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.
Tue 9/166:35 pmJFK - ONT
Nonstop6h 06mJetBlue
Sat 9/2011:00 pmONT - JFK
Nonstop5h 23mJetBlue
Deal found 3/27$243
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 4/307:20 amJFK - ONT
1 stop11h 12mAlaska Airlines
Sat 5/34:29 pmONT - JFK
1 stop10h 31mAlaska Airlines
Deal found 3/27$262
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Wed 5/73:43 pmLGA - ONT
1 stop9h 17mUnited Airlines
Sat 5/106:08 amONT - LGA
1 stop10h 01mUnited Airlines
Deal found 3/26$267
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Wed 5/76:00 amEWR - ONT
1 stop9h 24mUnited Airlines
Sat 5/106:08 amONT - EWR
1 stop10h 00mUnited Airlines
Deal found 3/26$267
This Southwest deal was found by Cheapflights users on 3/25. 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.
Thu 4/246:30 amLGA - ONT
1 stop7h 35mSouthwest
Tue 4/295:45 amONT - LGA
1 stop6h 45mSouthwest
Deal found 3/25$272
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Wed 4/236:50 amEWR - ONT
1 stop8h 09mAmerican Airlines
Mon 4/2810:40 pmONT - EWR
1 stop8h 00mAmerican Airlines
Deal found 3/25$272
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/267:20 amJFK - ONT
1 stop11h 12mHawaiian Airlines
Sat 5/34:29 pmONT - JFK
1 stop10h 31mHawaiian Airlines
Deal found 3/27$276

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 March 28, 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

Wed 4/9

8:00 am-3:04 pm

1 stop10h 04m

Ontario

Tue 4/29

10:44 am-6:47 am

1 stop17h 03m

$223

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 4/19

10:59 pm-7:29 am

1 stop11h 30m

Ontario

Mon 4/21

6:03 pm-10:00 pm

1 stop24h 57m

$228

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Wed 4/23

7:00 am-11:20 am

1 stop7h 20m

Ontario

Fri 4/25

12:11 pm-9:59 pm

1 stop6h 48m

$236

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 5/6

6:59 am-12:08 pm

1 stop8h 09m

Ontario

Sat 5/17

6:47 pm-11:59 am

1 stop14h 12m

$238

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Fri 5/2

8:01 am-1:16 pm

1 stop8h 15m

Ontario

Fri 5/9

2:28 pm-6:31 am

1 stop13h 03m

$238

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 4/30

6:15 pm-9:25 pm

Nonstop6h 10m

Ontario

Sat 5/3

10:40 pm-7:00 am

Nonstop5h 20m

$243

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 4/30

7:20 am-3:32 pm

1 stop11h 12m

Ontario

Sat 5/3

4:29 pm-6:00 am

1 stop10h 31m

$262

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 5/7

3:43 pm-10:00 pm

1 stop9h 17m

Ontario

Sat 5/10

6:08 am-7:09 pm

1 stop10h 01m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 5/7

6:00 am-12:24 pm

1 stop9h 24m

Ontario

Sat 5/10

6:08 am-7:08 pm

1 stop10h 00m

$267

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 5/10

7:30 am-1:52 pm

1 stop9h 22m

Ontario

Sat 5/17

12:45 pm-11:26 pm

1 stop7h 41m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

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 $326). 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 March 28, 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 March 28, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Pennsylvania to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Comfort

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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?

    $109 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and Alaska Airlines, with prices starting from $122 and $131, respectively.

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

    Most travelers choose Newark - Ontario, New York LaGuardia - Ontario or New York John F Kennedy 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, 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 $326). 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$134Average$264FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$152Average$193FlexibilityNo cancel feeOn-time65%
DeltaCheapest$259Average$434FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$536FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$303Average$419FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$346Average$467FlexibilityNo cancel feeOn-time69%
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