Which layover airport has the shortest connection time from Ontario to Philadelphia?

Chicago (ORD) has the shortest average layover time for this route: 1h 25m.

What airlines fly to Philadelphia?

JetBlue, American Airlines and United Airlines are the top three most popular airlines that fly to Philadelphia from Ontario according to our data. JetBlue is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 9 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Philadelphia?

Alaska Airlines and Delta are the most popular carriers operating from Ontario to Philadelphia

Which layover airport offers the lowest fares from Ontario to Philadelphia?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $252.

Which airport is the most popular layover for flights between Ontario and Philadelphia?

Denver (DEN) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Ontario to Philadelphia?

Flights connecting via Nashville (BNA) have the shortest average one-way travel time: 7h 20m.

When did momondo last update prices for flights from Ontario Airport to Philadelphia Airport?

Prices for flights from Ontario Airport to Philadelphia Airport are updated daily.

How many operators does momondo search for flights from Ontario Airport to Philadelphia Airport?

As of August 2026, there are 5 operators available to choose from for flights from Ontario Airport to Philadelphia Airport.

How old do you have to be to fly from Ontario Airport to Philadelphia Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The travel and health documents you'll need for your trip to Philadelphia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Philadelphia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$110 Cheap Flights from Ontario to Philadelphia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Philadelphia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 6:30 am-

11h 50m

8:00 am - 3:49 pm-

10h 49m

$228Frontier

Tue, Aug 25 - Tue, Sep 1

3:40 pm - 6:30 am-

11h 50m

8:00 am - 9:27 pm-

16h 27m

$228Frontier

Thu, Aug 27 - Mon, Aug 31

3:14 pm - 5:40 am-

11h 26m

6:00 am - 4:46 pm-

13h 46m

$293Multiple Airlines

Wed, Sep 23 - Sat, Oct 3

3:14 pm - 5:40 am-

11h 26m

6:00 am - 4:46 pm-

13h 46m

$293Multiple Airlines

Tue, Sep 22 - Tue, Sep 29

7:05 am - 7:58 pm-

9h 53m

2:31 pm - 8:05 pm-

8h 34m

$312Delta

Sat, Sep 5 - Fri, Sep 11

7:05 am - 7:58 pm-

9h 53m

2:31 pm - 8:05 pm-

8h 34m

$313Delta

Sat, Sep 5 - Fri, Sep 11

1:20 pm - 12:05 am-

7h 45m

5:00 am - 9:35 am-

7h 35m

$340Southwest

Sun, Nov 22 - Thu, Nov 26

5:00 am - 5:42 pm-

9h 42m

9:45 am - 3:29 pm-

8h 44m

$345United Airlines

Sun, Nov 22 - Thu, Nov 26

11:55 pm - 10:50 am-

7h 55m

5:20 am - 9:55 am-

7h 35m

$347Southwest

Thu, Oct 1 - Mon, Oct 5

6:00 am - 5:15 pm-

8h 15m

6:00 am - 12:29 pm-

9h 29m

$347United Airlines

Tue, Oct 27 - Sat, Oct 31

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Frontier flights from Ontario to Philadelphia

Our best Frontier deals on Ontario to Philadelphia flight tickets

Frontier

Aug 25

ONT3:40 pmOntario

11h 50m

1 stop

PHL6:30 amPhiladelphia

Sep 1

PHL8:00 amPhiladelphia

10h 49m

1 stop

ONT3:49 pmOntario

$228

Frontier

Aug 27

ONT3:40 pmOntario

11h 50m

1 stop

PHL6:30 amPhiladelphia

Sep 3

PHL7:00 amPhiladelphia

12h 22m

1 stop

ONT4:22 pmOntario

$229

Frontier

Aug 29

ONT11:50 amOntario

15h 40m

1 stop

PHL6:30 amPhiladelphia

Sep 5

PHL8:37 pmPhiladelphia

16h 27m

1 stop

ONT10:04 amOntario

$230

Delta flights from Ontario to Philadelphia

Our best Delta deals on Ontario to Philadelphia flight tickets

Delta

Sep 5

ONT7:05 amOntario

9h 53m

1 stop

PHL7:58 pmPhiladelphia

Sep 11

PHL2:31 pmPhiladelphia

8h 34m

1 stop

ONT8:05 pmOntario

$312

Delta

Sep 5

ONT7:05 amOntario

9h 53m

1 stop

PHL7:58 pmPhiladelphia

Sep 11

PHL2:31 pmPhiladelphia

8h 34m

1 stop

ONT8:05 pmOntario

$313

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 8/25

3:40 pm-6:30 am

1 stop11h 50m

Philadelphia

Tue 9/1

8:00 am-3:49 pm

1 stop10h 49m

$228

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 8/27

3:40 pm-6:30 am

1 stop11h 50m

Philadelphia

Mon 8/31

8:00 am-9:27 pm

1 stop16h 27m

$228

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Wed 9/23

3:14 pm-5:40 am

1 stop11h 26m

Philadelphia

Sat 10/3

6:00 am-4:46 pm

1 stop13h 46m

$293

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 9/22

3:14 pm-5:40 am

1 stop11h 26m

Philadelphia

Tue 9/29

6:00 am-4:46 pm

1 stop13h 46m

$293

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 9/5

7:05 am-7:58 pm

1 stop9h 53m

Philadelphia

Fri 9/11

2:31 pm-8:05 pm

1 stop8h 34m

$312

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 9/5

7:05 am-7:58 pm

1 stop9h 53m

Philadelphia

Fri 9/11

2:31 pm-8:05 pm

1 stop8h 34m

$313

Quickest round-trip

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sun 11/22

1:20 pm-12:05 am

1 stop7h 45m

Philadelphia

Thu 11/26

5:00 am-9:35 am

1 stop7h 35m

$340

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sun 11/22

5:00 am-5:42 pm

2 stops9h 42m

Philadelphia

Thu 11/26

9:45 am-3:29 pm

1 stop8h 44m

$345

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 10/1

11:55 pm-10:50 am

1 stop7h 55m

Philadelphia

Mon 10/5

5:20 am-9:55 am

1 stop7h 35m

$347

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Tue 10/27

6:00 am-5:15 pm

1 stop8h 15m

Philadelphia

Sat 10/31

6:00 am-12:29 pm

1 stop9h 29m

$347

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Ontario and Philadelphia?

Prices are currently low for flights on this route.

Typical prices usually range from $347 to $481.
The lowest price recently found on this route was $228.

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Ontario is in September. Flight prices, which tend to average around $346, are often lower during this time because this is during the off-season. The month of July is another great option to travel to Philadelphia, with average flight prices from Ontario averaging around $361.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Ontario to Philadelphia is on a Saturday. Travelers who choose to depart for Philadelphia on a Saturday will often find tickets for as low as $474. On the other hand, Sunday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $582.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Ontario to Philadelphia in the evening for as low as $476. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the morning when prices are around $536.

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

You are more likely to see cheaper flights to Philadelphia from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $427 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Ontario for as low as $322 on momondo.

How have Ontario to Philadelphia flight prices changed over time?

As of August 2026, prices for Ontario to Philadelphia flights are approximately 50% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Philadelphia (ONT to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Philadelphia

Fastest flight time	7h 28m
Direct flights	None

The fastest flight from Ontario to Philadelphia takes 7h 28m

There are no direct flights from Ontario to Philadelphia. There are no popular flight routes from Ontario to Philadelphia.

Search flight deals

Frequently asked questions about flying from Ontario to Philadelphia

How far is Ontario to Philadelphia by plane?
The distance between Ontario and Philadelphia is about 2355.5 mi. In terms of flight time, this usually takes a little over 7h 28m.
When did momondo last update prices for flights from Ontario Airport to Philadelphia Airport?
Prices for flights from Ontario Airport to Philadelphia Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Philadelphia Airport?
As of August 2026, there are 5 operators available to choose from for flights from Ontario Airport to Philadelphia Airport.
How old do you have to be to fly from Ontario Airport to Philadelphia Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The travel and health documents you'll need for your trip to Philadelphia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Philadelphia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Philadelphia?
momondo data reveals that the most frequently booked airline on the route from Ontario to Philadelphia is American Airlines, representing 51% of all bookings. The subsequent popular airlines are Frontier at 21%, Delta at 13%, and Southwest at 12%.

Best airlines flying from Ontario to Philadelphia

Compare and see reviews for airlines that fly from Ontario to Philadelphia with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $157	Free Cancellation	Rating 5.6 2,737 reviews	Search Frontier flights
Delta	PriceFrom $282	Free Cancellation	Rating 7.8 8,483 reviews	Search Delta flights
American Airlines	PriceFrom $300	Free Cancellation	Rating 7.1 11,845 reviews	Search American Airlines flights
United Airlines	PriceFrom $312	Free Cancellation	Rating 7.4 10,059 reviews	Search United Airlines flights
Southwest	PriceFrom $347	Free Cancellation	Rating 8.0 4,222 reviews	Search Southwest flights

Wildwood

Rehoboth Beach

Cape May

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Reading

Essington

Dover

Dewey Beach

North Wildwood

New Castle

Chester

Avalon

Vineland

Lewes

Stone Harbor

Pottstown

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Philadelphia?

It is quick and easy to find Ontario to Philadelphia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Philadelphia that suits you.

Can I find flights from Ontario to Philadelphia with flexible booking policies on momondo?

All flight searches from Ontario to Philadelphia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Philadelphia?

momondo provides multiple filters to help you find the best flight to Philadelphia from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Philadelphia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Philadelphia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.