How long is the flight from Philadelphia to Ontario?

For as low as $279, Delta can have you in Ontario from Philadelphia in 8h 19m. Airlines will cover a distance of 2349 mi.

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

Our cheapest airline available from Philadelphia to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $130 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $166 and $300 round-trip. Users have found that Frontier is 68% cheaper than the other options available to this destination.

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

One-way options have recently been found by users for as low as $140 on Delta. Other airlines that offer cheap prices include Frontier from $158 and Alaska Airlines from $168 one-way.

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.

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).

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

Consider American Airlines, Frontier or Southwest when booking your flight. These represent the most popular airlines when flying from Philadelphia to Ontario.

Most accurate provider : When it comes to deals on Philadelphia-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Ontario flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Philadelphia-Ontario 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 Philadelphia-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Philadelphia to Ontario?

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

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

Yes. Cheapflights offers flight deals from Philadelphia 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.

$62+ Flights from Philadelphia to Ontario

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Find cheap flights from Philadelphia to Ontario 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.

Cheapflights Tip: The best prices from Philadelphia to Ontario are usually found in March or May, booked 64 days in advance, depart on a Monday or Wednesday and return on a Tuesday

Cheap flight deals from Philadelphia to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$146 (Kiwi.com)
One-way from	$62 (Trip.com)
Popular in	December
Cheapest in	March
Average price	$371

Provider with most accurate pricing for Philadelphia-Ontario flight deals.

Search Deals

Provider most trusted by Cheapflights users for Philadelphia-Ontario flights.

Search Deals

From Philadelphia to Ontario

Search Deals

One-way flight from Philadelphia to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Philadelphia to Ontario

Cheapest flights from Philadelphia to Ontario
Explore the most affordable flight options available from Philadelphia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Fri 12/58:36 pmPHL - ONT

1 stop20h 49mFrontier

Tue 12/912:30 pmONT - PHL

1 stop22h 51mFrontier

Deal found 10/21

$146

Fri 12/58:36 pmPHL - ONT

1 stop20h 49mFrontier

Sun 12/74:01 pmONT - PHL

1 stop10h 30mFrontier

Deal found 10/21

$174

Fri 12/58:36 pmPHL - ONT

1 stop20h 49mFrontier

Thu 12/116:15 amONT - PHL

2 stops39h 19mFrontier

Deal found 10/21

$180

Fri 12/58:36 pmPHL - ONT

1 stop20h 49mMultiple Airlines

Tue 12/912:30 pmONT - PHL

2 stops17h 47mMultiple Airlines

Deal found 10/21

$195

Fri 12/58:36 pmPHL - ONT

1 stop20h 49mMultiple Airlines

Mon 12/85:18 pmONT - PHL

2 stops12h 59mMultiple Airlines

Deal found 10/21

$197

Wed 12/33:30 pmPHL - ONT

2 stops25h 34mFrontier

Tue 12/912:30 pmONT - PHL

1 stop22h 51mFrontier

Deal found 10/21

$204

Sun 12/75:05 amPHL - ONT

2 stops14h 28mMultiple Airlines

Tue 12/912:30 pmONT - PHL

1 stop22h 51mMultiple Airlines

Deal found 10/21

$211

Sat 11/16:19 amPHL - ONT

1 stop20h 31mFrontier

Thu 11/66:53 amONT - PHL

1 stop18h 56mFrontier

Deal found 10/21

$222

Sun 12/78:36 pmPHL - ONT

1 stop20h 49mFrontier

Thu 12/112:59 pmONT - PHL

2 stops30h 35mFrontier

Deal found 10/21

$223

Thu 11/136:19 amPHL - ONT

1 stop20h 31mFrontier

Wed 11/198:45 amONT - PHL

1 stop17h 04mFrontier

Deal found 10/21

$224

Sat 11/86:19 amPHL - ONT

1 stop7h 51mFrontier

Thu 11/2012:23 pmONT - PHL

1 stop13h 22mFrontier

Deal found 10/20

$226

Best flights from Philadelphia to Ontario
Discover carefully curated flight deals from Philadelphia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 22, 2025.

Tue 1/133:55 pmPHL - ONT

1 stop8h 19mDelta

Tue 1/2010:30 pmONT - PHL

1 stop7h 57mDelta

Deal found 10/21

$279

Wed 1/143:55 pmPHL - ONT

1 stop8h 19mDelta

Wed 1/211:00 pmONT - PHL

1 stop8h 22mDelta

Deal found 10/21

$279

Thu 11/272:30 pmPHL - ONT

1 stop8h 12mDelta

Thu 12/1112:12 pmONT - PHL

1 stop7h 35mDelta

Deal found 10/21

$305

Sat 12/611:09 amPHL - ONT

2 stops13h 46mDelta

Mon 12/810:25 pmONT - PHL

1 stop10h 07mDelta

Deal found 10/21

$305

Thu 11/272:30 pmPHL - ONT

1 stop8h 12mDelta

Tue 12/26:00 amONT - PHL

1 stop8h 40mDelta

Deal found 10/20

$308

Thu 12/46:50 pmPHL - ONT

1 stop8h 08mDelta

Thu 12/114:49 pmONT - PHL

1 stop10h 01mDelta

Deal found 10/21

$321

Wed 11/126:01 pmPHL - ONT

1 stop8h 03mDelta

Wed 11/1910:25 pmONT - PHL

1 stop7h 55mDelta

Deal found 10/20

$337

Tue 1/131:30 pmPHL - ONT

1 stop10h 44mDelta

Sun 1/181:00 pmONT - PHL

1 stop8h 22mDelta

Deal found 10/21

$338

Wed 1/143:55 pmPHL - ONT

1 stop8h 19mDelta

Sun 1/181:00 pmONT - PHL

1 stop8h 22mDelta

Deal found 10/21

$338

Sun 3/15:55 amPHL - ONT

1 stop8h 43mDelta

Tue 3/310:30 pmONT - PHL

1 stop7h 57mDelta

Deal found 10/21

$338

Tue 1/137:00 amPHL - ONT

1 stop8h 34mDelta

Fri 1/1610:30 pmONT - PHL

1 stop7h 57mDelta

Deal found 10/21

$338

Wed 1/141:30 pmPHL - ONT

1 stop10h 44mDelta

Fri 1/1610:30 pmONT - PHL

1 stop7h 57mDelta

Deal found 10/21

$338

Last-minute flights from Philadelphia to Ontario
Discover last-minute flight deals from Philadelphia to Ontario. Data last updated October 22, 2025 and is based on user searches.

Sat 11/16:19 amPHL - ONT

1 stop20h 31mFrontier

Thu 11/66:53 amONT - PHL

1 stop18h 56mFrontier

Deal found 10/21

$222

Thu 11/68:05 pmPHL - ONT

1 stop14h 12mMultiple Airlines

Mon 11/1010:43 pmONT - PHL

2 stops36h 32mMultiple Airlines

Deal found 10/22

$263

Fri 11/76:19 amPHL - ONT

1 stop7h 51mFrontier

Fri 11/74:05 pmONT - PHL

1 stop9h 44mFrontier

Deal found 10/19

$265

Sat 11/86:19 amPHL - ONT

1 stop7h 51mFrontier

Thu 11/2012:23 pmONT - PHL

1 stop13h 22mFrontier

Deal found 10/20

$226

Sat 11/86:19 amPHL - ONT

1 stop7h 51mFrontier

Sun 11/94:05 pmONT - PHL

1 stop9h 44mFrontier

Deal found 10/19

$234

Sat 11/86:19 amPHL - ONT

1 stop20h 31mFrontier

Mon 11/101:46 pmONT - PHL

2 stops23h 04mFrontier

Deal found 10/21

$240

Thu 11/136:19 amPHL - ONT

1 stop20h 31mFrontier

Wed 11/198:45 amONT - PHL

1 stop17h 04mFrontier

Deal found 10/21

$224

Sat 11/156:19 amPHL - ONT

1 stop7h 51mFrontier

Fri 11/2112:58 amONT - PHL

1 stop24h 52mFrontier

Deal found 10/20

$257

Mon 11/176:19 amPHL - ONT

1 stop7h 51mFrontier

Wed 11/267:06 pmONT - PHL

1 stop6h 39mFrontier

Deal found 10/21

$269

Thu 11/206:00 amPHL - ONT

1 stop8h 11mFrontier

Thu 11/2712:23 pmONT - PHL

1 stop13h 22mFrontier

Deal found 10/20

$231

One-way flights from Philadelphia to Ontario
Search for one-way flight options from Philadelphia to Ontario. Find affordable one-way fares based on user searches. Data last updated October 22, 2025.

Fri 12/58:36 pmPHL - ONT

1 stop20h 49mFrontier

Deal found 10/22

$62

Thu 11/206:00 amPHL - ONT

1 stop8h 11mFrontier

Deal found 10/20

$85

Mon 12/86:15 amPHL - ONT

1 stop13h 08mFrontier

Deal found 10/21

$91

Sun 12/218:36 pmPHL - ONT

1 stop30h 23mFrontier

Deal found 10/21

$94

Sun 12/78:36 pmPHL - ONT

1 stop20h 49mFrontier

Deal found 10/22

$95

Fri 1/94:39 pmPHL - ONT

1 stop10h 20mFrontier

Deal found 10/21

$108

Thu 10/306:19 amPHL - ONT

1 stop7h 51mFrontier

Deal found 10/20

$111

Thu 11/68:05 pmPHL - ONT

1 stop14h 12mMultiple Airlines

Deal found 10/19

$116

Mon 11/106:19 amPHL - ONT

1 stop20h 31mFrontier

Deal found 10/21

$117

Thu 12/185:45 amPHL - ONT

2 stops9h 40mSouthwest

Deal found 10/20

$131

Thu 11/276:00 amPHL - ONT

1 stop20h 57mFrontier

Deal found 10/22

$132

Cheapflights Fare Finder

Use the filters below to find and compare flights from Philadelphia to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Tue 1/13

3:55 pm-9:14 pm

1 stop8h 19m

Ontario

Tue 1/20

10:30 pm-9:27 am

1 stop7h 57m

$279

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Wed 1/14

3:55 pm-9:14 pm

1 stop8h 19m

Ontario

Wed 1/21

1:00 pm-12:22 am

1 stop8h 22m

$279

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Thu 11/27

2:30 pm-7:42 pm

1 stop8h 12m

Ontario

Thu 12/11

12:12 pm-10:47 pm

1 stop7h 35m

$305

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Sat 12/6

11:09 am-9:55 pm

2 stops13h 46m

Ontario

Mon 12/8

10:25 pm-11:32 am

1 stop10h 07m

$305

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Thu 11/27

2:30 pm-7:42 pm

1 stop8h 12m

Ontario

Tue 12/2

6:00 am-5:40 pm

1 stop8h 40m

$308

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Thu 12/4

6:50 pm-11:58 pm

1 stop8h 08m

Ontario

Thu 12/11

4:49 pm-5:50 am

1 stop10h 01m

$321

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Wed 11/12

6:01 pm-11:04 pm

1 stop8h 03m

Ontario

Wed 11/19

10:25 pm-9:20 am

1 stop7h 55m

$337

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Tue 1/13

1:30 pm-9:14 pm

1 stop10h 44m

Ontario

Sun 1/18

1:00 pm-12:22 am

1 stop8h 22m

$338

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Wed 1/14

3:55 pm-9:14 pm

1 stop8h 19m

Ontario

Sun 1/18

1:00 pm-12:22 am

1 stop8h 22m

$338

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Sun 3/1

5:55 am-11:38 am

1 stop8h 43m

Ontario

Tue 3/3

10:30 pm-9:27 am

1 stop7h 57m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 21 results

Compare providers for flights from Philadelphia to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Ontario in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust 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 Philadelphia-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Philadelphia-Ontario 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 Philadelphia-Ontario 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 Philadelphia to Ontario

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

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

The best time to book flights from Philadelphia to Ontario is 64 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 Philadelphia to Ontario?

Currently, May is the cheapest month in which you can book a flight from Philadelphia to Ontario (average of $88). Flying from Philadelphia to Ontario in July is currently the most expensive (average of $141). 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 PHL to ONT?

It’s typically best to fly out from Philadelphia to Ontario in the evening. Doing so could potentially save you 24% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

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

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Philadelphia to Ontario, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,237 reviews

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

4,237 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

7.9

Good

7,981 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

8,990 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

11,028 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,129 reviews

Southwest

8.0

Very good

4,237 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

How long is the flight from Philadelphia to Ontario?
For as low as $279, Delta can have you in Ontario from Philadelphia in 8h 19m. Airlines will cover a distance of 2349 mi.
What are the cheapest airlines flying from Philadelphia to Ontario round-trip?
Our cheapest airline available from Philadelphia to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $130 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $166 and $300 round-trip. Users have found that Frontier is 68% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Philadelphia to Ontario one-way?
One-way options have recently been found by users for as low as $140 on Delta. Other airlines that offer cheap prices include Frontier from $158 and Alaska Airlines from $168 one-way.
Can I find deals for flights from Philadelphia to Ontario that include hotel bookings?
Yes. In addition to deals on Philadelphia to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Philadelphia to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Ontario.
Can I find deals for business class flights from Philadelphia to Ontario?
Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to Ontario?
Currently, May is the cheapest month in which you can book a flight from Philadelphia to Ontario (average of $88). Flying from Philadelphia to Ontario in July is currently the most expensive (average of $141). 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

Alternative routes for Philadelphia to Ontario

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Complete your trip

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Other flights to Ontario

Top 6 airlines flying from Philadelphia to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$130	Average$297	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$166	Average$218	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$300	Average$431	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$305	Average$436	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$308	Average$429	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$367	Average$480	FlexibilityNo cancel fee	On-time63%

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$62+ Cheap flights from Philadelphia to Ontario (PHL - 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Philadelphia to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Philadelphia to Ontario are usually found in March or May, booked 64 days in advance, depart on a Monday or Wednesday and return on a Tuesday

Cheap flight deals from Philadelphia to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Philadelphia to Ontario

Cheapest flights from Philadelphia to OntarioExplore the most affordable flight options available from Philadelphia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Explore the most affordable flight options available from Philadelphia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Philadelphia to Ontario that are best for you.

Compare providers for flights from Philadelphia to Ontario

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 Philadelphia to Ontario in October.

Best time to book a flight from Philadelphia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Philadelphia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Ontario

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

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

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

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

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Philadelphia to Ontario, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Philadelphia to Ontario?

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

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

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

How can I find direct flights from Philadelphia to Ontario?

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

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

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 Philadelphia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Philadelphia to Ontario

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Cheapest flights from Philadelphia to Ontario
Explore the most affordable flight options available from Philadelphia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.