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$69+ 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
Dec 26 — Jan 21
Thu 12/26
Thu 1/2
1 adult, Economy
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The best prices from Ontario to Philadelphia are usually found in January or April, booked 72 days in advance, depart on a Tuesday or Wednesday and return on a Monday

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 December 21, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$125
(Mytrip)

One-way from

$69
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$463
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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From Ontario to Philadelphia
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One-way flight from Ontario to Philadelphia
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High demand for flights, 3% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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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 December 21, 2024.

This FlightHub deal was found by Cheapflights users on 12/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:53 pmONT - PHL
1 stop14h 07mFrontier
Mon 1/67:30 amPHL - ONT
1 stop8h 15mFrontier
Deal found 12/20$180
This Southwest deal was found by Cheapflights users on 12/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/271:50 pmONT - PHL
2 stops8h 35mSouthwest
Mon 1/67:00 amPHL - ONT
2 stops11h 20mSouthwest
Deal found 12/21$706
This Alaska Airlines deal was found by Cheapflights users on 12/19. 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.
Tue 12/3110:40 amONT - PHL
2 stops28h 01mAlaska Airlines
Tue 1/76:32 pmPHL - ONT
1 stop19h 06mAlaska Airlines
Deal found 12/19$758
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:10 amONT - PHL
2 stops9h 11mUnited Airlines
Fri 1/33:35 pmPHL - ONT
1 stop8h 14mUnited Airlines
Deal found 12/20$782
This Delta deal was found by Cheapflights users on 12/19. 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.
Sun 12/296:52 amONT - PHL
2 stops13h 37mDelta
Mon 12/306:58 pmPHL - ONT
1 stop8h 31mDelta
Deal found 12/19$851

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 2,558,603 searches. Data last updated December 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 2/15

8:29 pm-7:38 am

1 stop8h 09m

Philadelphia

Sat 2/22

8:00 am-7:09 pm

1 stop14h 09m

$125

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 1/16

9:02 am-9:23 pm

2 stops33h 21m

Philadelphia

Sat 1/18

11:02 am-10:27 am

3 stops26h 25m

$262

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 2/12

6:15 am-5:20 pm

1 stop8h 05m

Philadelphia

Sat 2/15

10:10 am-8:52 pm

2 stops13h 42m

$351

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 2/12

6:10 am-5:57 pm

2 stops8h 47m

Philadelphia

Sat 2/15

3:39 pm-10:16 pm

2 stops9h 37m

$356

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 2/15

7:05 am-11:20 pm

2 stops13h 15m

Philadelphia

Sat 2/22

5:40 am-11:55 am

1 stop9h 15m

$361

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Mon 1/13

11:15 am-9:05 pm

1 stop6h 50m

Philadelphia

Thu 1/16

5:00 am-2:55 pm

2 stops12h 55m

$427

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 2/25

4:20 pm-5:25 pm

1 stop22h 05m

Philadelphia

Sun 3/2

6:25 pm-11:02 am

1 stop19h 37m

$482

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 1/23

6:45 am-8:48 pm

1 stop11h 03m

$69

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 1/7

1:00 pm-12:49 am

1 stop8h 49m

$168

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 1/25

6:10 am-4:05 pm

1 stop6h 55m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 13 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 December.
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 December 13, 2024.

The best time to book flights from Ontario to Philadelphia is 72 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, August is the cheapest month in which you can book a flight from Ontario to Philadelphia (average of $236). Flying from Ontario to Philadelphia in March is currently the most expensive (average of $295). 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 December 21, 2024.

Unlike at noon, when flights are generally more expensive, you can save up to 29% 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 December 16, 2024.

Travelers seeking maximum savings on their Ontario to Philadelphia flight should consider departing on Wednesday 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 December 21, 2024.
Read through reviews of airlines operating flights from Ontario to Philadelphia, such as Delta, Alaska Airlines and Frontier. 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
4,814 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

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
4,814 reviews
Southwest
8.1
Very good
4,814 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

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
9,540 reviews
Southwest
8.1
Very good
4,814 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

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
8,597 reviews
Southwest
8.1
Very good
4,814 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

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
9,035 reviews
Southwest
8.1
Very good
4,814 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

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
4,814 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

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 $125. Other airlines that can offer you cheap pricing are United Airlines, from $351, and American Airlines, from $356. Frontier is 66% 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 $69. However, be on the lookout for offers from Delta and American 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, August is the cheapest month in which you can book a flight from Ontario to Philadelphia (average of $236). Flying from Ontario to Philadelphia in March is currently the most expensive (average of $295). 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 Ontario to Philadelphia

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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 2,558,603 searches. Data last updated December 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$125Average$253FlexibilityNo cancel feeOn-time65%
FrontierCheapest$126Average$253FlexibilityNo cancel feeOn-time62%
DeltaCheapest$279Average$438FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$280Average$418FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$317Average$496FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$366Average$516FlexibilityNo cancel feeOn-time63%
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