HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Pennsylvania

$64+ Cheap flights from Ontario (ONT) to Pennsylvania

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHL
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Pennsylvania 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 Ontario to Pennsylvania

Keep the following information in mind while searching for Ontario to Pennsylvania flight deals. Data was last updated October 29, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$64
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$373
Provider with most accurate pricing for Los Angeles-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Philadelphia flights.
Search Deals
From Ontario to Pennsylvania
Search Deals
One-way flight from Ontario to Pennsylvania
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Ontario to Pennsylvania

Cheapest flights from Ontario to Pennsylvania
Explore the most affordable flight options available from Ontario to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This CheapOair deal was found by Cheapflights users on 10/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:45 amONT - PHL
1 stop17h 04mFrontier
Sat 11/156:19 amPHL - ONT
1 stop20h 31mFrontier
Deal found 10/27$130
This CheapOair deal was found by Cheapflights users on 10/29. 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 11/136:53 amONT - PHL
1 stop18h 56mFrontier
Thu 11/206:00 amPHL - ONT
1 stop8h 11mFrontier
Deal found 10/29$150
This CheapOair deal was found by Cheapflights users on 10/28. 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 11/1312:05 pmONT - PHL
1 stop13h 44mFrontier
Mon 11/176:19 amPHL - ONT
1 stop20h 31mFrontier
Deal found 10/28$176
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:15 amONT - PHL
2 stops15h 19mFrontier
Mon 12/84:12 pmPHL - ONT
1 stop22h 15mFrontier
Deal found 10/27$189
This CheapOair deal was found by Cheapflights users on 10/29. 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.
Wed 11/58:45 amONT - PHL
1 stop17h 04mFrontier
Thu 11/136:19 amPHL - ONT
1 stop7h 51mFrontier
Deal found 10/29$196
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:15 amONT - PHL
2 stops24h 45mFrontier
Sun 12/78:36 pmPHL - ONT
1 stop20h 49mFrontier
Deal found 10/28$198
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:30 pmONT - EWR
2 stops30h 05mMultiple Airlines
Wed 12/103:58 pmEWR - ONT
1 stop29h 37mMultiple Airlines
Deal found 10/28$203
This CheapOair deal was found by Cheapflights users on 10/28. 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 11/67:39 amONT - PHL
1 stop14h 29mFrontier
Sat 11/156:19 amPHL - ONT
1 stop7h 51mFrontier
Deal found 10/28$206
This CheapOair deal was found by Cheapflights users on 10/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:45 amONT - PHL
1 stop17h 04mFrontier
Mon 11/246:00 amPHL - ONT
1 stop8h 28mFrontier
Deal found 10/27$211
This Frontier deal was found by Cheapflights users on 10/27. 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.
Thu 11/1312:05 pmONT - DCA
1 stop6h 54mFrontier
Thu 11/276:00 pmDCA - ONT
1 stop8h 57mFrontier
Deal found 10/27$211
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:45 amONT - PHL
1 stop17h 04mMultiple Airlines
Sat 11/158:51 pmPHL - ONT
2 stops24h 58mMultiple Airlines
Deal found 10/26$212
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:05 pmONT - DCA
1 stop6h 54mFrontier
Mon 11/176:00 pmDCA - ONT
2 stops29h 42mFrontier
Deal found 10/27$213

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Pennsylvania 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 October 29, 2025.
Use the filters below to find and compare flights from Ontario to Pennsylvania that are best for you.

Fly from

Ontario

Fly to

Pennsylvania

Route

Depart

Return

Price

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Thu 1/22

6:00 am-7:28 pm

1 stop10h 28m

New York John F Kennedy Intl

Tue 1/27

7:00 am-3:08 pm

1 stop11h 08m

$253

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Thu 2/5

6:00 am-7:28 pm

1 stop10h 28m

New York John F Kennedy Intl

Tue 2/10

7:00 am-3:08 pm

1 stop11h 08m

$253

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Sun 2/1

6:00 am-7:28 pm

1 stop10h 28m

New York John F Kennedy Intl

Wed 2/4

7:00 am-3:08 pm

1 stop11h 08m

$253

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Sun 2/1

6:00 am-7:28 pm

1 stop10h 28m

New York John F Kennedy Intl

Sat 2/7

11:30 am-8:36 pm

1 stop12h 06m

$253

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Tue 1/6

6:00 am-7:24 pm

1 stop10h 24m

New York John F Kennedy Intl

Fri 1/9

4:22 pm-11:56 pm

1 stop10h 34m

$253

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Sun 2/1

6:00 am-7:28 pm

1 stop10h 28m

New York John F Kennedy Intl

Fri 2/6

4:22 pm-11:56 pm

1 stop10h 34m

$256

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Thu 3/5

6:55 pm-7:54 am

1 stop9h 59m

New York John F Kennedy Intl

Mon 3/9

4:00 pm-10:37 pm

1 stop9h 37m

$256

OntarioNew York

ONT - JFK

ONTJFK

Ontario

Thu 2/26

6:00 am-7:29 pm

1 stop10h 29m

New York John F Kennedy Intl

Mon 3/2

4:00 pm-10:37 pm

1 stop9h 37m

$256

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 11/19

10:25 pm-8:44 am

1 stop7h 19m

New York LaGuardia

Wed 1/7

6:00 am-11:54 am

1 stop8h 54m

$257

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 12/10

7:05 am-5:41 pm

1 stop7h 36m

New York LaGuardia

Fri 12/12

5:00 pm-11:04 pm

1 stop9h 04m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Ontario to Pennsylvania

Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Ontario 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 Ontario to Pennsylvania

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

Currently, July is the cheapest month in which you can book a flight from Ontario to Pennsylvania (average of $109). Flying from Ontario to Pennsylvania in August is currently the most expensive (average of $176). 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 ONT to PA?

Find hourly flight availability from Ontario to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 13% on flights from Ontario to Pennsylvania by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Ontario to Pennsylvania?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Pennsylvania. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Pennsylvania flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated October 29, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Ontario to Pennsylvania. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
7,992 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,999 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,032 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,124 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Pennsylvania. 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 from for flights from Ontario to Pennsylvania?

    For a flight from Ontario to Pennsylvania, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • How long is the flight from Ontario to Pennsylvania?

    Airlines like Alaska Airlines, Delta, and Frontier fly from Ontario to Pennsylvania in about 7h 19m. The time it takes to get you to your destination can typically vary by up to 14h 35m. The distance between Ontario and Pennsylvania is about 2417 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $111. Alaska Airlines flights start at $125 while deals on Delta start at $129 one-way.

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

    The most popular route from Ontario to Pennsylvania is Ontario - New York John F Kennedy Intl. You may also consider Ontario - Newark or Ontario - New York LaGuardia.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Pennsylvania 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 Ontario to Pennsylvania?

    Currently, July is the cheapest month in which you can book a flight from Ontario to Pennsylvania (average of $109). Flying from Ontario to Pennsylvania in August is currently the most expensive (average of $176). 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 Ontario to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Newark flights
San Francisco to Newark flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Seattle flights
San Francisco to Los Angeles flights
Los Angeles to LaGuardia flights
Los Angeles to San Francisco flights
Los Angeles to Honolulu flights
San Francisco to Las Vegas flights
San Francisco to LaGuardia flights
San Francisco to Dallas/Fort Worth flights
San Francisco to Honolulu flights
Los Angeles to Miami flights
Los Angeles to Las Vegas flights
Los Angeles to O'Hare Intl flights
Los Angeles to Orlando flights
San Francisco to Seattle flights
Santa Ana to San Francisco flights
Ontario to Seattle flights
San Francisco to Santa Ana flights
Ontario to Dallas/Fort Worth flights
San Francisco to Ontario flights
San Francisco to O'Hare Intl flights
Burbank to Las Vegas flights
Los Angeles to Fort Lauderdale flights
San Jose to Las Vegas flights
Ontario to San Francisco flights
San Diego to John F Kennedy Intl flights
Los Angeles to Sacramento flights
Los Angeles to Denver flights
Los Angeles to San Jose flights
Los Angeles to Reagan-National flights
San Jose to Los Angeles flights
Santa Ana to Seattle flights
San Francisco to Orlando flights
Los Angeles to Portland flights
Los Angeles to Boston flights
Los Angeles to Baltimore flights
Ontario to Las Vegas flights
Los Angeles to Sky Harbor Intl flights
Santa Ana to Las Vegas flights
Santa Ana to Dallas/Fort Worth flights
Los Angeles to Hobby flights
Ontario to John F Kennedy Intl flights
San Francisco to Miami flights
San Diego to Newark flights
Burbank to LaGuardia flights
San Francisco to Kahului flights

Top 6 airlines flying from Ontario to Pennsylvania

Discover the top 6 airlines that operate flights from Ontario to Pennsylvania. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$88Average$160FlexibilityNo cancel feeOn-time65%
FrontierCheapest$151Average$253FlexibilityNo cancel feeOn-time62%
DeltaCheapest$296Average$450FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$303Average$459FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$456FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$310Average$489FlexibilityNo cancel feeOn-time69%

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.