How long does it take to fly to Ontario?

Average flight duration from Pennsylvania to Ontario depends on which airport you fly into and out of. Flying from Pittsburgh to Los Angeles is 5h 19m on average, while flying from Philadelphia to Los Angeles is 5h 44m on average. Los Angeles is the most popular airport in Ontario.

What airlines fly to Ontario?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Ontario from Pennsylvania according to our data. American Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between Pennsylvania and Ontario is 15 per week as of September 2026. The most frequent departure day is Tue, with 20% of weekly flights leaving on this day.

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

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Pennsylvania to Ontario

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

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

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

As of September 2026, there are 6 operators available to choose from for flights from Pennsylvania to Ontario Airport.

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

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 Pennsylvania to Ontario Airport.

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

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$90 Cheap Flights from Pennsylvania to Ontario in 2026/27

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6:00 pm - 11:51 pmDCA Washington, D.C. Reagan-National-ONT Ontario

8h 51m1 stop Denver Intl

11:52 am - 9:50 pmONT Ontario-DCA Washington, D.C. Reagan-National

6h 58m1 stop Denver Intl

$149Frontier

Tue, Nov 3 - Fri, Nov 6

6:00 am - 4:30 pmIAD Washington, D.C. Dulles Intl-ONT Ontario

13h 30m1 stop Las Vegas Harry Reid Intl

5:25 pm - 6:20 amONT Ontario-IAD Washington, D.C. Dulles Intl

9h 55m1 stop Las Vegas Harry Reid Intl

$172Frontier

Tue, Oct 13 - Tue, Oct 20

6:00 am - 10:31 amIAD Washington, D.C. Dulles Intl-ONT Ontario

7h 31m1 stop Las Vegas Harry Reid Intl

11:13 am - 11:59 pmONT Ontario-IAD Washington, D.C. Dulles Intl

9h 46m1 stop Seattle/Tacoma Intl

$209Multiple Airlines

Tue, Oct 13 - Tue, Oct 27

6:00 am - 10:31 amIAD Washington, D.C. Dulles Intl-ONT Ontario

7h 31m1 stop Las Vegas Harry Reid Intl

11:13 am - 11:59 pmONT Ontario-IAD Washington, D.C. Dulles Intl

9h 46m1 stop Seattle/Tacoma Intl

$211Multiple Airlines

Tue, Oct 20 - Wed, Oct 28

6:10 am - 11:55 amDCA Washington, D.C. Reagan-National-ONT Ontario

8h 45m2 stops Dallas Love Field Las Vegas Harry Reid Intl

1:35 pm - 11:50 pmONT Ontario-DCA Washington, D.C. Reagan-National

7h 15m1 stop Dallas Love Field

$236Southwest

Wed, Nov 4 - Tue, Nov 10

6:10 am - 10:45 amDCA Washington, D.C. Reagan-National-ONT Ontario

7h 35m1 stop Dallas Love Field

8:40 am - 8:15 pmONT Ontario-DCA Washington, D.C. Reagan-National

8h 35m2 stops Phoenix Sky Harbor Intl Dallas Love Field

$236Southwest

Tue, Nov 3 - Wed, Nov 4

5:20 pm - 10:49 pmIAD Washington, D.C. Dulles Intl-ONT Ontario

8h 29m1 stop Chicago O'Hare Intl

1:52 pm - 1:06 amONT Ontario-IAD Washington, D.C. Dulles Intl

8h 14m1 stop San Francisco

$237United Airlines

Sat, Oct 10 - Sat, Oct 17

5:10 pm - 10:49 pmDCA Washington, D.C. Reagan-National-ONT Ontario

8h 39m1 stop Chicago O'Hare Intl

7:00 am - 5:03 pmONT Ontario-DCA Washington, D.C. Reagan-National

7h 03m1 stop Chicago O'Hare Intl

$237United Airlines

Sat, Oct 10 - Sat, Oct 17

9:40 am - 3:16 pmPHL Philadelphia-ONT Ontario

8h 36m1 stop Phoenix Sky Harbor Intl

6:00 am - 4:27 pmONT Ontario-PHL Philadelphia

7h 27m1 stop Dallas/Fort Worth

$241American Airlines

Sat, Oct 31 - Tue, Nov 3

6:23 pm - 11:19 pmDCA Washington, D.C. Reagan-National-ONT Ontario

7h 56m1 stop Chicago O'Hare Intl

12:44 pm - 10:49 pmONT Ontario-DCA Washington, D.C. Reagan-National

7h 05m1 stop Dallas/Fort Worth

$246American Airlines

Thu, Jan 28 - Tue, Feb 2

Cheap last minute flights

Enter your travel dates to find the best prices.

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

13h 46m1 stop Dallas/Fort Worth

8:35 pm - 7:18 amONT Ontario-PHL Philadelphia

7h 43m1 stop Las Vegas Harry Reid Intl

$338Frontier

Sat, Sep 26 - Fri, Oct 9

9:55 am - 5:18 pmJFK New York John F Kennedy Intl-ONT Ontario

10h 23m1 stop Portland

6:02 am - 10:29 pmONT Ontario-JFK New York John F Kennedy Intl

13h 27m1 stop Seattle/Tacoma Intl

$365Alaska Airlines

Wed, Sep 23 - Tue, Oct 6

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

13h 46m1 stop Dallas/Fort Worth

8:35 pm - 7:18 amONT Ontario-PHL Philadelphia

7h 43m1 stop Las Vegas Harry Reid Intl

$371Frontier

Sat, Sep 26 - Fri, Oct 9

7:29 am - 1:25 pmLGA New York LaGuardia-ONT Ontario

8h 56m1 stop Dallas/Fort Worth

12:37 pm - 11:44 pmONT Ontario-LGA New York LaGuardia

8h 07m1 stop Dallas/Fort Worth

$382American Airlines

Fri, Sep 25 - Fri, Oct 2

6:00 am - 11:05 amJFK New York John F Kennedy Intl-ONT Ontario

8h 05m1 stop Atlanta Hartsfield-Jackson

6:00 pm - 6:53 amONT Ontario-JFK New York John F Kennedy Intl

9h 53m1 stop Seattle/Tacoma Intl

$382Delta

Tue, Sep 22 - Sat, Oct 3

11:10 am - 4:35 pmJFK New York John F Kennedy Intl-ONT Ontario

8h 25m1 stop Salt Lake City

5:15 pm - 6:26 amONT Ontario-JFK New York John F Kennedy Intl

10h 11m1 stop Salt Lake City

$382Delta

Sat, Sep 26 - Sat, Oct 3

8:59 am - 6:17 pmJFK New York John F Kennedy Intl-ONT Ontario

12h 18m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

12:37 pm - 11:14 pmONT Ontario-JFK New York John F Kennedy Intl

7h 37m1 stop Dallas/Fort Worth

$387American Airlines

Sat, Sep 26 - Tue, Sep 29

9:55 am - 5:18 pmJFK New York John F Kennedy Intl-ONT Ontario

10h 23m1 stop Portland

6:02 am - 10:29 pmONT Ontario-JFK New York John F Kennedy Intl

13h 27m1 stop Seattle/Tacoma Intl

$388Alaska Airlines

Sat, Sep 26 - Sat, Oct 3

1:25 pm - 8:58 pmLGA New York LaGuardia-ONT Ontario

10h 33m2 stops Chicago O'Hare Intl Denver Intl

1:24 pm - 11:29 pmONT Ontario-LGA New York LaGuardia

7h 05m1 stop Denver Intl

$427United Airlines

Fri, Sep 25 - Fri, Oct 2

3:27 pm - 8:58 pmLGA New York LaGuardia-ONT Ontario

8h 31m1 stop Denver Intl

6:00 am - 4:48 pmONT Ontario-LGA New York LaGuardia

7h 48m1 stop Houston George Bush Intcntl

$472United Airlines

Fri, Sep 25 - Sun, Sep 27

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Frontier flights from Pennsylvania to Ontario

Our best Frontier deals on Pennsylvania to Ontario flight tickets

Frontier

Nov 3

DCA6:00 pmWashington, D.C. Reagan-National

8h 51m

1 stop

ONT11:51 pmOntario

Nov 6

ONT11:52 amOntario

6h 58m

1 stop

DCA9:50 pmWashington, D.C. Reagan-National

$149

Frontier

Oct 31

DCA6:00 pmWashington, D.C. Reagan-National

8h 51m

1 stop

ONT11:51 pmOntario

Nov 7

ONT6:25 amOntario

7h 22m

1 stop

DCA4:47 pmWashington, D.C. Reagan-National

$172

Frontier

Oct 31

DCA6:00 pmWashington, D.C. Reagan-National

20h 35m

1 stop

ONT11:35 amOntario

Nov 3

ONT11:52 amOntario

6h 58m

1 stop

DCA9:50 pmWashington, D.C. Reagan-National

$174

Alaska Airlines flights from Pennsylvania to Ontario

Our best Alaska Airlines deals on Pennsylvania to Ontario flight tickets

Alaska Airlines

Oct 31

IAD7:02 amWashington, D.C. Dulles Intl

9h 14m

1 stop

ONT1:16 pmOntario

Nov 4

ONT4:09 pmOntario

10h 35m

1 stop

IAD5:44 amWashington, D.C. Dulles Intl

$235

Alaska Airlines

Oct 31

PHL6:41 pmPhiladelphia

20h 25m

1 stop

ONT12:06 pmOntario

Nov 3

ONT6:00 amOntario

20h 32m

1 stop

PHL5:32 amPhiladelphia

$241

Alaska Airlines

Oct 27

IAD9:38 amWashington, D.C. Dulles Intl

11h 22m

1 stop

ONT6:00 pmOntario

Nov 3

ONT12:02 pmOntario

14h 42m

1 stop

IAD5:44 amWashington, D.C. Dulles Intl

$245

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Ontario

DCA Washington, D.C. Reagan-National - ONT Ontario

DCAONT

Washington, D.C. Reagan-National

Tue 11/3

6:00 pm-11:51 pm

1 stop8h 51m

Ontario

Fri 11/6

11:52 am-9:50 pm

1 stop6h 58m

$149

Washington, D.C.Ontario

IAD Washington, D.C. Dulles Intl - ONT Ontario

IADONT

Washington, D.C. Dulles Intl

Tue 10/13

6:00 am-4:30 pm

1 stop13h 30m

Ontario

Tue 10/20

5:25 pm-6:20 am

1 stop9h 55m

$172

Washington, D.C.Ontario

IAD Washington, D.C. Dulles Intl - ONT Ontario

IADONT

Washington, D.C. Dulles Intl

Tue 10/13

6:00 am-10:31 am

1 stop7h 31m

Ontario

Tue 10/27

11:13 am-11:59 pm

1 stop9h 46m

$209

Washington, D.C.Ontario

IAD Washington, D.C. Dulles Intl - ONT Ontario

IADONT

Washington, D.C. Dulles Intl

Tue 10/20

6:00 am-10:31 am

1 stop7h 31m

Ontario

Wed 10/28

11:13 am-11:59 pm

1 stop9h 46m

$211

Washington, D.C.Ontario

DCA Washington, D.C. Reagan-National - ONT Ontario

DCAONT

Washington, D.C. Reagan-National

Wed 11/4

6:10 am-11:55 am

2 stops8h 45m

Ontario

Tue 11/10

1:35 pm-11:50 pm

1 stop7h 15m

$236

Washington, D.C.Ontario

DCA Washington, D.C. Reagan-National - ONT Ontario

DCAONT

Washington, D.C. Reagan-National

Tue 11/3

6:10 am-10:45 am

1 stop7h 35m

Ontario

Wed 11/4

8:40 am-8:15 pm

2 stops8h 35m

$236

Washington, D.C.Ontario

IAD Washington, D.C. Dulles Intl - ONT Ontario

IADONT

Washington, D.C. Dulles Intl

Sat 10/10

5:20 pm-10:49 pm

1 stop8h 29m

Ontario

Sat 10/17

1:52 pm-1:06 am

1 stop8h 14m

$237

Washington, D.C.Ontario

DCA Washington, D.C. Reagan-National - ONT Ontario

DCAONT

Washington, D.C. Reagan-National

Sat 10/10

5:10 pm-10:49 pm

1 stop8h 39m

Ontario

Sat 10/17

7:00 am-5:03 pm

1 stop7h 03m

$237

PhiladelphiaOntario

PHL Philadelphia - ONT Ontario

PHLONT

Philadelphia

Sat 10/31

9:40 am-3:16 pm

1 stop8h 36m

Ontario

Tue 11/3

6:00 am-4:27 pm

1 stop7h 27m

$241

Quickest round-trip

Washington, D.C.Ontario

DCA Washington, D.C. Reagan-National - ONT Ontario

DCAONT

Washington, D.C. Reagan-National

Thu 1/28

6:23 pm-11:19 pm

1 stop7h 56m

Ontario

Tue 2/2

12:44 pm-10:49 pm

1 stop7h 05m

$246

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 Pennsylvania to Ontario

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 Ontario?

In general, February is the cheapest month to fly from Pennsylvania to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $366. If you aren’t able to travel during the month of February, then book flights to Ontario from Pennsylvania during September instead. Flights to Ontario in September, while not as cheap as those in February, still average around $367.

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

You are more likely to see cheaper flights to Ontario from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $412 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Pennsylvania for as low as $285 on momondo.

Can stopping save me money on Pennsylvania to Ontario flights?

You could potentially save up to 3% on your flight if you consider stops on a Pennsylvania to Ontario flight.

Cheap Pennsylvania to Ontario flight deals and tips

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

Best Price Found	$90
Fastest flight time	5h 58m
Direct flights	Every day
Airports in Ontario	1 airport

The best one-way flight to Ontario from Pennsylvania in the past 72 hours is $90. The best round-trip flight deal from Pennsylvania to Ontario found on momondo in the last 72 hours is $149.

The fastest flight from Pennsylvania to Ontario takes 5h 58m

Direct flights go from Pennsylvania to Ontario every day.

There is 1 airport in Ontario. From Pennsylvania there are direct flights to Ontario (ONT).

Search flight deals

Frequently asked questions about flying from Pennsylvania to Ontario

When did momondo last update prices for flights from Pennsylvania to Ontario Airport?
Prices for flights from Pennsylvania to Ontario Airport are updated daily.
How many operators does momondo search for flights from Pennsylvania to Ontario Airport?
As of September 2026, there are 6 operators available to choose from for flights from Pennsylvania to Ontario Airport.
How old do you have to be to fly from Pennsylvania to Ontario Airport?
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 Pennsylvania to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Pennsylvania to Ontario

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $184	Free Cancellation	Rating 7.8 8,592 reviews	Search Delta flights
Frontier	PriceFrom $215	Free Cancellation	Rating 5.6 2,592 reviews	Search Frontier flights
United Airlines	PriceFrom $290	Free Cancellation	Rating 7.4 10,227 reviews	Search United Airlines flights
Southwest	PriceFrom $305	Free Cancellation	Rating 8.0 4,193 reviews	Search Southwest flights
American Airlines	PriceFrom $314	Free Cancellation	Rating 7.0 12,079 reviews	Search American Airlines flights

Why use momondo?

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

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

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

Yes. All flights to Ontario from Pennsylvania on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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

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

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Pennsylvania and alert you when they change.

An easier way to manage your Ontario trip

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Cheap flights from Pennsylvania to Los Angeles from $90

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to Los Angeles departing on 10/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Pennsylvania to Ontario

Our best Frontier deals on Pennsylvania to Ontario flight tickets

Alaska Airlines flights from Pennsylvania to Ontario

Our best Alaska Airlines deals on Pennsylvania to Ontario flight tickets

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How to get the cheapest flight ticket from Pennsylvania to Ontario

What is the cheapest month to fly to Ontario?

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

Can stopping save me money on Pennsylvania to Ontario flights?

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

What airlines fly to Ontario?

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

How long does it take to fly to Ontario?

Cheap Pennsylvania to Ontario flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Ontario

Frequently asked questions about flying from Pennsylvania to Ontario

Best airlines flying from Pennsylvania to Ontario

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

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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