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$70+ Cheap flights from Ontario to Philadelphia (ONT - PHL)

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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHL
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Ontario to Philadelphia are usually found in August or January, booked 18 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from Ontario to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

December

Cheapest in

August

Round-trip from

$328
(CheapOair)

One-way from

$70
(Frontier)
Provider with most accurate pricing for Ontario-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Ontario-Philadelphia flights.
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High demand for flights, 30% potential price rise
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Best time to find cheap flights, 18% potential price drop
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From Ontario to Philadelphia
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One-way flight from Ontario to Philadelphia
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Find flight deals from Ontario to Philadelphia

Cheapest flights from Ontario to Philadelphia
Explore the most affordable flight options available from Ontario to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This CheapOair deal was found by Cheapflights users on 11/20. 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.
Tue 12/1712:59 amONT - PHL
1 stop25h 10mFrontier
Wed 12/256:40 amPHL - ONT
1 stop20h 19mFrontier
Deal found 11/20$328
This Delta deal was found by Cheapflights users on 11/19. 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 12/126:00 amONT - PHL
1 stop8h 34mDelta
Sat 12/144:44 pmPHL - ONT
1 stop9h 57mDelta
Deal found 11/19$353
This American Airlines deal was found by Cheapflights users on 11/18. 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 12/267:30 pmONT - PHL
1 stop7h 45mAmerican Airlines
Wed 1/810:31 amPHL - ONT
2 stops10h 53mAmerican Airlines
Deal found 11/18$386
This Southwest deal was found by Cheapflights users on 11/19. 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.
Mon 12/1611:30 amONT - PHL
2 stops8h 50mSouthwest
Mon 1/612:55 pmPHL - ONT
2 stops10h 55mSouthwest
Deal found 11/19$416
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Sun 12/155:05 amONT - PHL
1 stop7h 36mUnited Airlines
Sat 1/118:10 amPHL - ONT
2 stops13h 09mUnited Airlines
Deal found 11/19$458
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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.
Thu 12/57:44 pmONT - PHL
2 stops19h 06mAlaska Airlines
Sat 12/146:50 pmPHL - ONT
1 stop32h 09mAlaska Airlines
Deal found 11/19$641
This Orbitz deal was found by Cheapflights users on 11/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/166:00 amONT - PHL
1 stop8h 50mMultiple Airlines
Fri 12/277:45 amPHL - ONT
1 stop8h 15mMultiple Airlines
Deal found 11/19$646

Find flights from Ontario to Philadelphia within your budget

Customize your flight search to find flights from Ontario to Philadelphia 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 2,629,791 searches. Data last updated November 20, 2024.

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Route

Depart

Return

Price

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 12/17

12:59 am-5:09 am

1 stop25h 10m

Philadelphia

Wed 12/25

6:40 am-11:59 pm

1 stop20h 19m

$328

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 12/12

6:00 am-5:34 pm

1 stop8h 34m

Philadelphia

Sat 12/14

4:44 pm-11:41 pm

1 stop9h 57m

$353

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Fri 1/24

6:10 am-5:49 pm

1 stop8h 39m

Philadelphia

Mon 1/27

1:43 pm-6:24 pm

1 stop7h 41m

$383

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 1/7

9:20 am-11:15 pm

2 stops10h 55m

Philadelphia

Mon 1/13

6:25 am-1:25 pm

2 stops10h 00m

$388

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 3/27

11:30 am-6:01 am

1 stop15h 31m

Philadelphia

Sun 4/6

6:35 pm-10:39 am

1 stop19h 04m

$416

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 2/19

5:05 am-3:46 pm

1 stop7h 41m

Philadelphia

Tue 3/4

8:01 am-8:55 pm

1 stop15h 54m

$455

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 2/12

12:59 am-11:39 am

1 stop7h 40m

Philadelphia

Tue 2/18

10:50 am-9:27 pm

2 stops13h 37m

$498

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 1/23

6:45 am-8:48 pm

1 stop11h 03m

$70

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 12/14

12:05 pm-12:55 am

1 stop9h 50m

$173

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sun 12/15

9:11 am-6:10 am

3 stops17h 59m

$193

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 14 results
1
2

Compare providers for flights from Ontario to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Philadelphia in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia 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.

Travel insights for flights from Ontario to Philadelphia

Get recent, data-driven insights about flights from Ontario to Philadelphia including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ontario to Philadelphia?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Philadelphia. Price data was last updated on November 15, 2024.

The best time to book flights from Ontario to Philadelphia is 18 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, September is the cheapest month in which you can book a flight from Ontario to Philadelphia (average of $234). Flying from Ontario to Philadelphia in March is currently the most expensive (average of $284). 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 PHL?

Find hourly flight availability from Ontario to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

Unlike in the evening, when flights are generally more expensive, you can save up to 18% on flights from Ontario to Philadelphia by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to Philadelphia. Price data was last updated on November 18, 2024.

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

Rainfall in Philadelphia by month

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

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

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

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July 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 January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated November 20, 2024.
Read through reviews of airlines operating flights from Ontario to Philadelphia, such as Southwest, Frontier and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Ontario to Philadelphia round-trip?

    Cheapflights users have booked flights from Ontario to Philadelphia round-trip from $328. Other airlines that can offer you cheap pricing are Delta, from $353, and American Airlines, from $383. Frontier is 13% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $70. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Ontario to Philadelphia for a low price.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Ontario to Philadelphia (average of $234). Flying from Ontario to Philadelphia in March is currently the most expensive (average of $284). 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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Top 6 airlines flying from Ontario to Philadelphia

Discover the top 6 airlines that operate flights from Ontario to Philadelphia. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$125Average$257FlexibilityNo cancel feeOn-time65%
FrontierCheapest$125Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$280Average$419FlexibilityNo cancel feeOn-time71%
DeltaCheapest$289Average$556FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$317Average$496FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$366Average$486FlexibilityNo cancel feeOn-time63%
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