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

Southwest, Delta, and United Airlines are the most popular carriers operating from Ontario to Pennsylvania

What airlines fly to Pennsylvania?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Pennsylvania from Ontario according to our data. American Airlines is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Pennsylvania. Keep in mind that there are 7 different airlines that fly to Pennsylvania on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ontario to Pennsylvania on average per week?

22 flights are operational weekly from Ontario to Pennsylvania as of August 2026. The most popular departure day for this route is Wed, with 18% of flights per week taking off on this day.

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

Prices for flights from Ontario Airport to Pennsylvania were last updated today.

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

As of August 2026, there are 7 operators available to choose from for flights from Ontario Airport to Pennsylvania.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Pennsylvania.

What documentation or ID do you need to fly to Pennsylvania?

The travel and health documents required for your trip to Pennsylvania can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Pennsylvania. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$76 Cheap Flights from Ontario to Pennsylvania in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Pennsylvania

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 6:30 amONT Ontario-PHL Philadelphia

11h 50m1 stop Las Vegas Harry Reid Intl

2:00 pm - 10:30 amPHL Philadelphia-ONT Ontario

23h 30m1 stop Denver Intl

$142Frontier

Sat, Sep 5 - Tue, Sep 8

3:40 pm - 6:30 amONT Ontario-PHL Philadelphia

11h 50m1 stop Las Vegas Harry Reid Intl

10:15 pm - 9:09 amPHL Philadelphia-ONT Ontario

13h 54m1 stop Las Vegas Harry Reid Intl

$142Frontier

Wed, Sep 2 - Tue, Sep 8

12:37 pm - 12:22 amONT Ontario-PHL Philadelphia

8h 45m1 stop Dallas/Fort Worth

1:00 pm - 6:17 pmPHL Philadelphia-ONT Ontario

8h 17m1 stop Phoenix Sky Harbor Intl

$241American Airlines

Wed, Sep 16 - Sat, Sep 19

6:27 am - 5:38 pmONT Ontario-PHL Philadelphia

8h 11m1 stop Phoenix Sky Harbor Intl

10:30 am - 4:07 pmPHL Philadelphia-ONT Ontario

8h 37m1 stop Phoenix Sky Harbor Intl

$241American Airlines

Wed, Jan 6 - Wed, Jan 20

1:55 pm - 11:25 pmONT Ontario-PHL Philadelphia

6h 30m1 stop Denver Intl

11:45 am - 6:15 pmPHL Philadelphia-ONT Ontario

9h 30m1 stop Chicago Midway

$242Southwest

Wed, Nov 18 - Wed, Dec 2

10:55 am - 9:20 pmONT Ontario-PHL Philadelphia

7h 25m1 stop Chicago Midway

11:45 am - 6:15 pmPHL Philadelphia-ONT Ontario

9h 30m1 stop Chicago Midway

$242Southwest

Wed, Nov 18 - Wed, Dec 2

3:14 pm - 5:40 amONT Ontario-PHL Philadelphia

11h 26m1 stop Seattle/Tacoma Intl

6:00 am - 4:46 pmPHL Philadelphia-ONT Ontario

13h 46m1 stop Dallas/Fort Worth

$246Multiple Airlines

Sat, Sep 26 - Tue, Sep 29

11:52 am - 1:16 amONT Ontario-PHL Philadelphia

10h 24m1 stop Denver Intl

7:02 am - 3:13 pmPHL Philadelphia-ONT Ontario

11h 11m1 stop Seattle/Tacoma Intl

$251Multiple Airlines

Tue, Oct 20 - Wed, Nov 4

6:00 am - 4:58 pmONT Ontario-PHL Philadelphia

7h 58m1 stop San Francisco

6:10 am - 12:20 pmPHL Philadelphia-ONT Ontario

9h 10m1 stop San Francisco

$252United Airlines

Wed, Dec 2 - Mon, Dec 7

6:08 am - 5:30 pmONT Ontario-PHL Philadelphia

8h 22m1 stop San Francisco

6:00 am - 12:18 pmPHL Philadelphia-ONT Ontario

9h 18m1 stop San Francisco

$252United Airlines

Mon, Sep 21 - Thu, Sep 24

Cheap last minute flights

Enter your travel dates to find the best prices.

7:56 pm - 12:51 pmONT Ontario-DCA Washington, D.C. Reagan-National

13h 55m1 stop Denver Intl

1:00 pm - 11:50 pmDCA Washington, D.C. Reagan-National-ONT Ontario

13h 50m1 stop Denver Intl

$276Frontier

Tue, Aug 18 - Wed, Oct 21

8:17 am - 10:00 pmONT Ontario-LGA New York LaGuardia

10h 43m1 stop Dallas/Fort Worth

10:55 pm - 8:36 amLGA New York LaGuardia-ONT Ontario

12h 41m1 stop Dallas/Fort Worth

$286Frontier

Sat, Aug 15 - Tue, Sep 1

6:15 am - 6:00 pmONT Ontario-JFK New York John F Kennedy Intl

8h 45m1 stop Phoenix Sky Harbor Intl

7:15 am - 12:03 pmJFK New York John F Kennedy Intl-ONT Ontario

7h 48m1 stop Phoenix Sky Harbor Intl

$352American Airlines

Tue, Aug 18 - Fri, Aug 28

12:59 pm - 11:58 pmONT Ontario-JFK New York John F Kennedy Intl

7h 59m1 stop Phoenix Sky Harbor Intl

7:59 am - 1:31 pmJFK New York John F Kennedy Intl-ONT Ontario

8h 32m1 stop Dallas/Fort Worth

$352American Airlines

Tue, Aug 18 - Tue, Aug 25

12:00 pm - 1:14 amONT Ontario-JFK New York John F Kennedy Intl

10h 14m1 stop Atlanta Hartsfield-Jackson

4:22 pm - 11:34 pmJFK New York John F Kennedy Intl-ONT Ontario

10h 12m1 stop Salt Lake City

$352Delta

Tue, Aug 18 - Fri, Aug 28

5:05 pm - 6:18 amONT Ontario-JFK New York John F Kennedy Intl

10h 13m1 stop Salt Lake City

4:22 pm - 11:34 pmJFK New York John F Kennedy Intl-ONT Ontario

10h 12m1 stop Salt Lake City

$352Delta

Mon, Aug 17 - Tue, Aug 25

1:18 pm - 11:24 pmONT Ontario-LGA New York LaGuardia

7h 06m1 stop Denver Intl

1:25 pm - 8:53 pmLGA New York LaGuardia-ONT Ontario

10h 28m2 stops Chicago O'Hare Intl Denver Intl

$357United Airlines

Tue, Aug 18 - Tue, Aug 25

8:35 am - 8:25 pmONT Ontario-LGA New York LaGuardia

8h 50m2 stops Phoenix Sky Harbor Intl Dallas Love Field

6:00 am - 12:30 pmLGA New York LaGuardia-ONT Ontario

9h 30m2 stops Chicago Midway Dallas Love Field

$403Southwest

Tue, Aug 18 - Tue, Aug 25

5:45 am - 5:45 pmONT Ontario-LGA New York LaGuardia

9h 00m2 stops Las Vegas Harry Reid Intl Chicago Midway

6:05 am - 12:30 pmLGA New York LaGuardia-ONT Ontario

9h 25m1 stop Dallas Love Field

$435Southwest

Tue, Aug 18 - Wed, Sep 2

9:15 am - 8:59 pmONT Ontario-LGA New York LaGuardia

8h 44m1 stop Houston George Bush Intcntl

10:00 am - 8:01 pmLGA New York LaGuardia-ONT Ontario

13h 01m2 stops Denver Intl San Francisco

$467United Airlines

Tue, Aug 18 - Wed, Aug 26

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JetBlue flights from Ontario to Pennsylvania

Our best JetBlue deals on Ontario to Pennsylvania flight tickets

JetBlue

Sep 14

ONT10:39 pmOntario

5h 21m

JFK7:00 amNew York John F Kennedy Intl

Sep 23

JFK5:59 pmNew York John F Kennedy Intl

5h 58m

ONT8:57 pmOntario

$354

JetBlue

Sep 19

ONT10:39 pmOntario

5h 21m

JFK7:00 amNew York John F Kennedy Intl

Sep 26

JFK5:59 pmNew York John F Kennedy Intl

5h 58m

ONT8:57 pmOntario

$358

JetBlue

Aug 25

ONT11:59 pmOntario

5h 21m

JFK8:20 amNew York John F Kennedy Intl

Sep 5

JFK6:50 pmNew York John F Kennedy Intl

6h 09m

ONT9:59 pmOntario

$397

American Airlines flights from Ontario to Pennsylvania

Our best American Airlines deals on Ontario to Pennsylvania flight tickets

American Airlines

Sep 16

ONT12:37 pmOntario

8h 45m

1 stop

PHL12:22 amPhiladelphia

Sep 19

PHL1:00 pmPhiladelphia

8h 17m

1 stop

ONT6:17 pmOntario

$241

American Airlines

Sep 18

ONT1:04 pmOntario

7h 27m

1 stop

PHL11:31 pmPhiladelphia

Oct 6

PHL10:45 amPhiladelphia

7h 31m

1 stop

ONT3:16 pmOntario

$273

American Airlines

Aug 26

ONT12:59 pmOntario

7h 59m

1 stop

JFK11:58 pmNew York John F Kennedy Intl

Sep 1

JFK7:59 amNew York John F Kennedy Intl

8h 32m

1 stop

ONT1:31 pmOntario

$282

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Sat 9/5

3:40 pm-6:30 am

1 stop11h 50m

Philadelphia

Tue 9/8

2:00 pm-10:30 am

1 stop23h 30m

$142

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Wed 9/2

3:40 pm-6:30 am

1 stop11h 50m

Philadelphia

Tue 9/8

10:15 pm-9:09 am

1 stop13h 54m

$142

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Wed 9/16

12:37 pm-12:22 am

1 stop8h 45m

Philadelphia

Sat 9/19

1:00 pm-6:17 pm

1 stop8h 17m

$241

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Wed 1/6

6:27 am-5:38 pm

1 stop8h 11m

Philadelphia

Wed 1/20

10:30 am-4:07 pm

1 stop8h 37m

$241

Quickest round-trip

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Wed 11/18

1:55 pm-11:25 pm

1 stop6h 30m

Philadelphia

Wed 12/2

11:45 am-6:15 pm

1 stop9h 30m

$242

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Wed 11/18

10:55 am-9:20 pm

1 stop7h 25m

Philadelphia

Wed 12/2

11:45 am-6:15 pm

1 stop9h 30m

$242

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Sat 9/26

3:14 pm-5:40 am

1 stop11h 26m

Philadelphia

Tue 9/29

6:00 am-4:46 pm

1 stop13h 46m

$246

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Tue 10/20

11:52 am-1:16 am

1 stop10h 24m

Philadelphia

Wed 11/4

7:02 am-3:13 pm

1 stop11h 11m

$251

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Wed 12/2

6:00 am-4:58 pm

1 stop7h 58m

Philadelphia

Mon 12/7

6:10 am-12:20 pm

1 stop9h 10m

$252

OntarioPhiladelphia

ONT Ontario - PHL Philadelphia

ONTPHL

Ontario

Mon 9/21

6:08 am-5:30 pm

1 stop8h 22m

Philadelphia

Thu 9/24

6:00 am-12:18 pm

1 stop9h 18m

$252

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 Pennsylvania

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

Other information

What is the cheapest month to fly to Pennsylvania?

The month of May is, on average, the cheapest month to fly to Pennsylvania from Ontario, with most prices found around $387. If you don’t want to visit Pennsylvania in May, then you should wait until January to fly from Ontario, when ticket prices are also cheap, with an average price of $404.

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

You are more likely to see cheaper flights to Pennsylvania from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Pennsylvania for around $426 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pennsylvania from Ontario for as low as $322 on momondo.

Can stopping save me money on Ontario to Pennsylvania flights?

You could potentially save up to 46% on your flight if you consider stops on a Ontario to Pennsylvania flight.

Cheap Ontario to Pennsylvania flight deals and tips

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

Fastest flight time	5h 20m
Direct flights	Every day
Airports in Pennsylvania	152 airports

The fastest flight from Ontario to Pennsylvania takes 5h 20m

Direct flights go from Ontario to Pennsylvania every day.

There are 152 airports in Pennsylvania. From Ontario there are direct flights to New York John F Kennedy Intl (JFK).

Search flight deals

Frequently asked questions about flying from Ontario to Pennsylvania

When did momondo last update prices for flights from Ontario Airport to Pennsylvania?
Prices for flights from Ontario Airport to Pennsylvania were last updated today.
How many operators does momondo search for flights from Ontario Airport to Pennsylvania?
As of August 2026, there are 7 operators available to choose from for flights from Ontario Airport to Pennsylvania.
How old do you have to be to fly from Ontario Airport to Pennsylvania?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Pennsylvania.
What documentation or ID do you need to fly to Pennsylvania?
The travel and health documents required for your trip to Pennsylvania can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Pennsylvania. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Pennsylvania

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $157	Free Cancellation	Rating 5.6 2,694 reviews	Search Frontier flights
Delta	PriceFrom $282	Free Cancellation	Rating 7.8 8,510 reviews	Search Delta flights
American Airlines	PriceFrom $285	Free Cancellation	Rating 7.1 11,933 reviews	Search American Airlines flights
United Airlines	PriceFrom $310	Free Cancellation	Rating 7.4 10,109 reviews	Search United Airlines flights
Southwest	PriceFrom $311	Free Cancellation	Rating 8.0 4,218 reviews	Search Southwest flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Pennsylvania. momondo saves you time and could save you money on your trip.

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

Flights from Ontario to Pennsylvania with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Pennsylvania from Ontario.

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

Of course. momondo tracks the price of Ontario to Pennsylvania flights. All you need is a valid email address and we will do the rest; it is that quick and easy.