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Cheap flights from Ontario to Philadelphia (ONT - PHL) from $74

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 6/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — PHL
Jun 15 — Jun 221
From?
To?
Sat 6/15
Sat 6/22
1 adult, Economy
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The best prices from Ontario to Philadelphia are usually found in September or January, booked 31 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 June 10, 2024.

Popular in

December

Cheapest in

September

Round-trip from

$227

One-way from

$74
High demand for flights, 36% potential price rise
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Best time to find cheap flights, 21% 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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What is the cheapest day to fly round-trip from Ontario to Philadelphia?

Monday is generally a great day to depart. Flying on this day could help you save up to 43%.

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

Users have found that booking a flight from Ontario to Philadelphia at least 58 days early can save you up to 28% on average compared to booking a flight this week. If booking 58 days before your flight isn’t an option for you, users have found flights from Ontario to Philadelphia for as little as $380 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $494 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, October can be a great choice for travel to Philadelphia. Flights to Philadelphia from Ontario in October are about $410 on average during October, but can be found for as low as $158.

What is the cheapest time of day to fly from ONT to PHL?

Unlike in the morning, when flights are generally more expensive, you can save up to 22% on flights from Ontario to Philadelphia by exploring options for tickets in the afternoon.

Cheap Ontario to Philadelphia flights in June & July 2024

Find cheap flight options from Ontario to Philadelphia specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,020,828 searches. Prices were last updated on June 10, 2024.
Check out some of the best flight deals from Ontario to Philadelphia in 2024. Check back regularly for other flight deals.
Tue 7/912:59 amONT - PHL
1 stop7h 47mFrontier
Wed 7/2410:00 amPHL - ONT
1 stop10h 18mFrontier
Deal found 6/9$154
Tue 7/912:59 amONT - PHL
1 stop7h 47mFrontier
Wed 7/2410:00 amPHL - ONT
1 stop10h 18mFrontier
Deal found 6/9$155
Mon 7/812:49 amONT - PHL
1 stop25h 49mFrontier
Tue 7/168:38 pmPHL - ONT
1 stop30h 01mFrontier
Deal found 6/9$156
Wed 7/1010:05 pmONT - PHL
2 stops17h 08mFrontier
Wed 7/2410:00 amPHL - ONT
1 stop10h 18mFrontier
Deal found 6/9$161
Mon 7/812:49 amONT - PHL
1 stop25h 49mFrontier
Tue 7/168:38 pmPHL - ONT
1 stop30h 01mFrontier
Deal found 6/9$168
Mon 6/2412:49 amONT - PHL
1 stop25h 47mFrontier
Tue 7/95:51 pmPHL - ONT
1 stop9h 08mFrontier
Deal found 6/9$196
Wed 7/2412:49 amONT - PHL
1 stop25h 49mFrontier
Mon 8/510:29 amPHL - ONT
2 stops16h 20mFrontier
Deal found 6/10$200
Wed 7/3112:49 amONT - PHL
1 stop25h 49mFrontier
Mon 8/510:29 amPHL - ONT
2 stops23h 58mFrontier
Deal found 6/9$203
Sun 7/712:59 amONT - PHL
1 stop24h 40mFrontier
Tue 7/168:38 pmPHL - ONT
1 stop30h 01mFrontier
Deal found 6/9$204

Ontario to Philadelphia 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Philadelphia in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 10, 2024.
Check out some of the best flight deals from Ontario to Philadelphia in 2024. Check back regularly for other flight deals.
Tue 7/912:59 amONT - PHL
1 stop7h 47mFrontier
Wed 7/2410:00 amPHL - ONT
1 stop10h 18mFrontier
Deal found 6/9$154
Tue 7/912:59 amONT - PHL
1 stop7h 47mFrontier
Wed 7/2410:00 amPHL - ONT
1 stop10h 18mFrontier
Deal found 6/9$155
Mon 7/812:49 amONT - PHL
1 stop25h 49mFrontier
Tue 7/168:38 pmPHL - ONT
1 stop30h 01mFrontier
Deal found 6/9$156
Wed 7/1010:05 pmONT - PHL
2 stops17h 08mFrontier
Wed 7/2410:00 amPHL - ONT
1 stop10h 18mFrontier
Deal found 6/9$161
Tue 8/612:59 amONT - PHL
1 stop7h 47mFrontier
Wed 8/286:38 pmPHL - ONT
1 stop14h 29mFrontier
Deal found 6/9$165
Mon 7/812:49 amONT - PHL
1 stop25h 49mFrontier
Tue 7/168:38 pmPHL - ONT
1 stop30h 01mFrontier
Deal found 6/9$168
Wed 8/146:57 amONT - PHL
1 stop7h 36mFrontier
Fri 8/308:24 amPHL - ONT
1 stop12h 12mFrontier
Deal found 6/9$176
Wed 8/216:57 amONT - PHL
1 stop7h 36mFrontier
Wed 8/286:38 pmPHL - ONT
1 stop14h 29mFrontier
Deal found 6/8$177
Sat 8/176:57 amONT - PHL
1 stop7h 36mFrontier
Tue 9/176:38 pmPHL - ONT
1 stop14h 29mFrontier
Deal found 6/9$178

Ontario to Philadelphia flights leaving soon

Find last-minute flight options from Ontario to Philadelphia for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 10, 2024.
Check out these flights departing soon from Ontario to Philadelphia. To prevent any unwanted surprises, users should verify their flight info before booking.
Sun 6/1612:59 amONT - PHL
1 stop8h 19mFrontier
Thu 6/208:30 pmPHL - ONT
1 stop30h 10mFrontier
Deal found 6/9$232
Mon 6/174:28 pmONT - PHL
2 stops22h 37mFrontier
Fri 6/218:30 pmPHL - ONT
1 stop30h 29mFrontier
Deal found 6/9$233
Sun 6/1612:59 amONT - PHL
1 stop8h 19mFrontier
Tue 6/258:24 amPHL - ONT
1 stop7h 30mFrontier
Deal found 6/9$243
Sun 6/1612:59 amONT - PHL
1 stop8h 19mFrontier
Fri 6/218:30 pmPHL - ONT
1 stop30h 29mFrontier
Deal found 6/9$252
Thu 6/2011:59 amONT - PHL
1 stop14h 37mFrontier
Thu 6/278:30 pmPHL - ONT
1 stop27h 53mFrontier
Deal found 6/8$254
Thu 6/2012:59 amONT - PHL
1 stop25h 37mFrontier
Mon 6/246:41 pmPHL - ONT
1 stop14h 33mFrontier
Deal found 6/9$261
Tue 6/1810:42 pmONT - PHL
1 stop27h 52mFrontier
Thu 6/208:30 pmPHL - ONT
1 stop30h 10mFrontier
Deal found 6/9$262
Tue 6/1812:59 amONT - PHL
1 stop7h 43mFrontier
Tue 6/255:51 pmPHL - ONT
1 stop9h 08mFrontier
Deal found 6/8$270
Thu 6/2011:59 amONT - PHL
1 stop14h 37mFrontier
Wed 6/268:00 amPHL - ONT
1 stop26h 03mFrontier
Deal found 6/9$271

One-way flights to Philadelphia from Ontario

Search for one-way flight options from Ontario to Philadelphia. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 10, 2024.
Users traveling one-way from Ontario to Philadelphia can select one of these great deals. Users can also find round-trip Ontario to Philadelphia flights by using the search form above.
Tue 6/1812:59 amONT - PHL
1 stop25h 34mFrontier
Deal found 6/9$74
Tue 8/67:16 pmONT - PHL
1 stop9h 36mFrontier
Deal found 6/9$77
Tue 7/912:59 amONT - PHL
1 stop7h 47mFrontier
Deal found 6/9$78
Mon 6/174:28 pmONT - PHL
2 stops22h 37mFrontier
Deal found 6/9$79
Mon 7/1512:49 amONT - PHL
1 stop25h 49mFrontier
Deal found 6/9$82
Mon 7/812:49 amONT - PHL
1 stop25h 49mFrontier
Deal found 6/9$83
Wed 7/1010:05 pmONT - PHL
2 stops17h 08mFrontier
Deal found 6/9$88
Tue 9/38:35 pmONT - PHL
1 stop7h 14mFrontier
Deal found 6/9$91
Mon 8/127:19 amONT - PHL
1 stop18h 20mFrontier
Deal found 6/9$93

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 3,020,828 searches. Data last updated June 10, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$154 - $390

Route

Depart

Return

Price

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 7/9

1 stop7h 47m

Philadelphia

Wed 7/24

1 stop10h 18m

$154

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Mon 7/8

1 stop25h 49m

Philadelphia

Tue 7/16

1 stop30h 01m

$156

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 8/6

1 stop7h 47m

Philadelphia

Wed 8/28

1 stop14h 29m

$165

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Mon 7/8

1 stop25h 49m

Philadelphia

Tue 7/16

1 stop30h 01m

$168

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 8/14

1 stop7h 36m

Philadelphia

Fri 8/30

1 stop12h 12m

$176

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 8/21

1 stop7h 36m

Philadelphia

Wed 8/28

1 stop14h 29m

$177

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 7/16

1 stop10h 02m

Philadelphia

Tue 7/23

2 stops9h 15m

$285

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Mon 9/16

1 stop13h 59m

Philadelphia

Tue 10/8

2 stops11h 24m

$344

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 8/24

2 stops9h 28m

Philadelphia

Mon 8/26

2 stops14h 45m

$390

Flights are sorted by cheapest first

Deals found on 6/9

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 May 31, 2024.
The best time to book flights from Ontario to Philadelphia is 31 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.
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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 June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Philadelphia flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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.

Temperature and rainfall in Philadelphia by month

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

PHL

Temperature

33.8 - 78.8 °F

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 June 10, 2024.
Read through reviews of airlines operating flights from Ontario to Philadelphia, such as Frontier, American Airlines and Delta. 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.
Alaska Airlines
8.1
Very good
9,254 reviews

Entertainment

7.3

Crew

8.6

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,254 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Entertainment

7.3

Crew

8.6

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,295 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Entertainment

7.3

Crew

8.6

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
10,661 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Entertainment

7.3

Crew

8.6

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,172 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Entertainment

7.3

Crew

8.6

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Frontier
6.2
Okay
3,969 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Entertainment

7.3

Crew

8.6

Boarding

8.2

Food

7.3

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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.

  • Can I find flights from Ontario to Philadelphia for under $200 on Cheapflights?

    Yes, there are multiple flights from Ontario to Philadelphia for under $200. The cheapest flight booked recently is on Frontier for just $154, but on average you can expect to pay $194.

  • Are there last-minute flights available from Ontario to Philadelphia for under $300?

    There are currently 20+ open flights from Ontario to Philadelphia within the next 7 days for less than $300.

  • What is the cheapest airline to fly from Ontario to Philadelphia round-trip?

    Cheapflights users have booked flights from Ontario to Philadelphia round-trip from $154. Frontier is 60% cheaper than the average price of flights available within the next 90 days to this destination.

  • What does ONT to PHL mean?

    ONT stands for Ontario Airport, while PHL stands for Philadelphia Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Ontario to Philadelphia that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Philadelphia flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Philadelphia with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Philadelphia flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Ontario to Philadelphia that allow pets onboard?

    Many airlines flying from Ontario to Philadelphia offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Philadelphia?

    Yes, you can often find last-minute deals on Ontario to Philadelphia flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Philadelphia flight deals updated?

    The Ontario to Philadelphia flight deals you see on this page were last updated on 6/9.

  • What are the most popular airlines that fly from Ontario to Philadelphia?

    Before booking your flight from Ontario to Philadelphia check out the most popular airlines for this route: American Airlines, Delta or Frontier.

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

    Currently, October is the cheapest month in which you can book a flight from Ontario to Philadelphia (average of $227). Flying from Ontario to Philadelphia in July is currently the most expensive (average of $298). 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
See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from Ontario to Philadelphia

Discover the top 5 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 3,020,828 searches. Data last updated June 10, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$132Average$259FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$167Average$285FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$280Average$443FlexibilityNo cancel feeOn-time71%
DeltaCheapest$304Average$564FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$321Average$544FlexibilityNo cancel feeOn-time69%
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Search flights from Ontario to Philadelphia by cabin class

Find flights from Ontario to Philadelphia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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