How long is the flight from Pittsburgh to Ontario?

For as low as $183, Frontier can have you in Ontario from Pittsburgh in 7h 21m. The distance between Pittsburgh and Ontario is about 2084 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

Cheapflights users have booked flights from Pittsburgh to Ontario round-trip from $296. Other airlines that can offer you cheap pricing are Southwest, from $303, and American Airlines, from $306. United Airlines is currently priced 34% below the average price you’ll pay for this route.

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

The cheapest airlines for a one-way flight from Pittsburgh to Ontario are American Airlines ($93), United Airlines ($144), and Southwest ($166).

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 Pittsburgh to Ontario?

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

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pittsburgh to Ontario as you normally would.

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

Most trusted provider : When it comes to deals on Pittsburgh-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Pittsburgh-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 Pittsburgh to Ontario that include hotel bookings?

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

How can I find direct flights from Pittsburgh to Ontario?

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

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

Yes. Cheapflights offers flight deals from Pittsburgh 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.

$109+ Flights from Pittsburgh to Ontario

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Cheap flight deals from Pittsburgh to Ontario

Cheapest flights from Pittsburgh to Ontario
Explore the most affordable flight options available from Pittsburgh to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

Wed 12/317:54 pmPIT - ONT

1 stop22h 48mAlaska Airlines

Tue 1/66:00 amONT - PIT

1 stop9h 58mAlaska Airlines

Deal found 12/30

$1,084

Wed 12/317:54 pmPIT - ONT

1 stop22h 48mAlaska Airlines

Fri 1/26:00 amONT - PIT

1 stop9h 58mAlaska Airlines

Deal found 12/30

$1,164

Wed 12/317:54 pmPIT - ONT

1 stop16h 56mAlaska Airlines

Thu 1/14:36 pmONT - PIT

1 stop23h 22mAlaska Airlines

Deal found 12/30

$1,192

Wed 12/315:06 pmPIT - ONT

1 stop8h 27mUnited Airlines

Wed 1/71:24 pmONT - PIT

1 stop6h 32mUnited Airlines

Deal found 12/30

$1,637

Best flights from Pittsburgh to Ontario
Discover carefully curated flight deals from Pittsburgh to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 1, 2026.

Mon 2/27:59 pmPIT - ONT

1 stop7h 21mFrontier

Mon 2/96:20 amONT - PIT

1 stop9h 44mFrontier

Deal found 1/1

$183

Wed 2/257:31 pmPIT - ONT

1 stop31h 01mAlaska Airlines

Wed 3/46:14 amONT - PIT

1 stop9h 21mAlaska Airlines

Deal found 12/31

$284

Fri 1/237:59 pmPIT - ONT

1 stop7h 21mFrontier

Mon 1/266:20 amONT - PIT

1 stop9h 44mFrontier

Deal found 12/29

$210

Wed 1/287:00 amPIT - ONT

1 stop11h 08mAlaska Airlines

Tue 2/34:03 pmONT - PIT

1 stop23h 43mAlaska Airlines

Deal found 1/1

$285

Fri 2/67:59 pmPIT - ONT

1 stop7h 21mFrontier

Mon 2/96:20 amONT - PIT

1 stop9h 44mFrontier

Deal found 12/30

$270

Wed 2/47:00 amPIT - ONT

1 stop11h 08mAlaska Airlines

Tue 2/104:03 pmONT - PIT

1 stop23h 43mAlaska Airlines

Deal found 1/1

$285

Thu 1/297:00 amPIT - ONT

1 stop19h 56mAlaska Airlines

Tue 2/1011:53 amONT - PIT

1 stop27h 53mAlaska Airlines

Deal found 1/1

$295

Wed 2/47:00 amPIT - ONT

1 stop11h 08mAlaska Airlines

Sat 2/144:02 pmONT - PIT

1 stop23h 33mAlaska Airlines

Deal found 1/1

$295

Mon 2/27:00 amPIT - ONT

1 stop19h 56mAlaska Airlines

Tue 2/1011:53 amONT - PIT

1 stop27h 53mAlaska Airlines

Deal found 1/1

$295

Wed 2/47:00 amPIT - ONT

1 stop16h 36mAlaska Airlines

Mon 2/96:00 amONT - PIT

1 stop9h 46mAlaska Airlines

Deal found 1/1

$295

Thu 1/297:00 amPIT - ONT

1 stop19h 56mAlaska Airlines

Sun 2/16:00 amONT - PIT

1 stop9h 46mAlaska Airlines

Deal found 12/30

$304

Last-minute flights from Pittsburgh to Ontario
Discover last-minute flight deals from Pittsburgh to Ontario. Data last updated January 1, 2026 and is based on user searches.

Fri 1/237:59 pmPIT - ONT

1 stop7h 21mFrontier

Mon 1/266:20 amONT - PIT

1 stop9h 44mFrontier

Deal found 12/29

$210

Tue 1/274:15 pmPIT - ONT

1 stop7h 43mUnited Airlines

Tue 2/35:05 amONT - PIT

1 stop7h 03mUnited Airlines

Deal found 12/30

$310

Wed 1/287:00 amPIT - ONT

1 stop16h 36mAlaska Airlines

Tue 2/311:53 amONT - PIT

1 stop27h 53mAlaska Airlines

Deal found 12/31

$284

Wed 1/287:00 amPIT - ONT

1 stop11h 08mAlaska Airlines

Wed 2/44:03 pmONT - PIT

1 stop23h 43mAlaska Airlines

Deal found 12/31

$294

Wed 1/287:00 amPIT - ONT

1 stop16h 36mAlaska Airlines

Mon 2/26:00 amONT - PIT

1 stop9h 46mAlaska Airlines

Deal found 1/1

$295

Thu 1/297:00 amPIT - ONT

1 stop19h 56mAlaska Airlines

Sun 2/16:00 amONT - PIT

1 stop9h 46mAlaska Airlines

Deal found 12/30

$304

Thu 1/297:00 amPIT - ONT

1 stop19h 56mAlaska Airlines

Sun 2/156:14 amONT - PIT

1 stop9h 21mAlaska Airlines

Deal found 1/1

$305

Fri 1/307:59 pmPIT - ONT

1 stop7h 21mFrontier

Mon 2/26:20 amONT - PIT

1 stop9h 44mFrontier

Deal found 1/1

$218

Fri 1/307:59 pmPIT - ONT

1 stop7h 21mFrontier

Fri 2/66:20 amONT - PIT

1 stop9h 44mFrontier

Deal found 12/31

$252

One-way flights from Pittsburgh to Ontario
Search for one-way flight options from Pittsburgh to Ontario. Find affordable one-way fares based on user searches. Data last updated January 1, 2026.

Mon 2/27:59 pmPIT - ONT

1 stop7h 21mFrontier

Deal found 12/30

$109

Fri 1/307:59 pmPIT - ONT

1 stop7h 21mFrontier

Deal found 12/31

$126

Sun 1/181:55 pmPIT - ONT

1 stop10h 10mDelta

Deal found 1/1

$151

Thu 1/226:54 amPIT - ONT

1 stop8h 09mAmerican Airlines

Deal found 12/29

$157

Wed 2/47:00 amPIT - ONT

1 stop11h 08mAlaska Airlines

Deal found 1/1

$158

Fri 1/237:59 pmPIT - ONT

1 stop7h 21mFrontier

Deal found 12/30

$159

Fri 2/274:14 pmPIT - ONT

1 stop10h 45mFrontier

Deal found 12/31

$166

Fri 3/278:30 amPIT - ONT

1 stop8h 40mSouthwest

Deal found 12/30

$193

Tue 1/204:15 pmPIT - ONT

1 stop7h 43mUnited Airlines

Deal found 12/31

$196

Sun 2/17:00 amPIT - ONT

1 stop30h 59mAlaska Airlines

Deal found 12/30

$198

Find flight deals from Pittsburgh to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$210 (Frontier)
One-way from	$109 (Cheapflightsfares)
Popular in	December
Cheapest in	April
Average price	$444

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

Search Deals

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

Search Deals

From Pittsburgh to Ontario

Search Deals

One-way flight from Pittsburgh to Ontario

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($83 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/2

7:59 pm-12:20 am

1 stop7h 21m

Ontario

Mon 2/9

6:20 am-7:04 pm

1 stop9h 44m

$183

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 1/23

7:59 pm-12:20 am

1 stop7h 21m

Ontario

Mon 1/26

6:20 am-7:04 pm

1 stop9h 44m

$210

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 2/6

7:59 pm-12:20 am

1 stop7h 21m

Ontario

Mon 2/9

6:20 am-7:04 pm

1 stop9h 44m

$270

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

7:31 pm-11:32 pm

1 stop31h 01m

Ontario

Wed 3/4

6:14 am-6:35 pm

1 stop9h 21m

$284

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 1/28

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Tue 2/3

4:03 pm-6:46 pm

1 stop23h 43m

$285

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/4

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Tue 2/10

4:03 pm-6:46 pm

1 stop23h 43m

$285

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 1/29

7:00 am-11:56 pm

1 stop19h 56m

Ontario

Tue 2/10

11:53 am-6:46 pm

1 stop27h 53m

$295

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/4

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Sat 2/14

4:02 pm-6:35 pm

1 stop23h 33m

$295

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/2

7:00 am-11:56 pm

1 stop19h 56m

Ontario

Tue 2/10

11:53 am-6:46 pm

1 stop27h 53m

$295

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/4

7:00 am-8:36 pm

1 stop16h 36m

Ontario

Mon 2/9

6:00 am-6:46 pm

1 stop9h 46m

$295

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 21 results

Compare providers for flights from Pittsburgh to Ontario

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

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	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 Pittsburgh-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Pittsburgh-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Pittsburgh-Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Pittsburgh-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Pittsburgh-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 Pittsburgh to Ontario

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

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

Currently, June is the cheapest month in which you can book a flight from Pittsburgh to Ontario (average of $168). Flying from Pittsburgh to Ontario in February is currently the most expensive (average of $270). 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.

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Pittsburgh to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,254 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

4,254 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

9,132 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

11,074 reviews

Southwest

8.0

Very good

4,254 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

How long is the flight from Pittsburgh to Ontario?
For as low as $183, Frontier can have you in Ontario from Pittsburgh in 7h 21m. The distance between Pittsburgh and Ontario is about 2084 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Pittsburgh to Ontario round-trip?
Cheapflights users have booked flights from Pittsburgh to Ontario round-trip from $296. Other airlines that can offer you cheap pricing are Southwest, from $303, and American Airlines, from $306. United Airlines is currently priced 34% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Pittsburgh to Ontario one-way?
The cheapest airlines for a one-way flight from Pittsburgh to Ontario are American Airlines ($93), United Airlines ($144), and Southwest ($166).
Can I find deals for flights from Pittsburgh to Ontario that include hotel bookings?
Yes. In addition to deals on Pittsburgh to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Pittsburgh to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pittsburgh to Ontario.
Can I find deals for business class flights from Pittsburgh to Ontario?
Yes. Cheapflights offers flight deals from Pittsburgh 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 Pittsburgh to Ontario?
Currently, June is the cheapest month in which you can book a flight from Pittsburgh to Ontario (average of $168). Flying from Pittsburgh to Ontario in February is currently the most expensive (average of $270). 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

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Other flights to Ontario

Top 3 airlines flying from Pittsburgh to Ontario

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$296	Average$448	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$303	Average$414	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$306	Average$443	FlexibilityNo cancel fee	On-time71%

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$109+ Cheap flights from Pittsburgh to Ontario (PIT - 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Pittsburgh to Ontario with Cheapflights

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3. Compare prices and book

Cheap flight deals from Pittsburgh to Ontario

Cheapest flights from Pittsburgh to OntarioExplore the most affordable flight options available from Pittsburgh to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

Explore the most affordable flight options available from Pittsburgh to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

Find flight deals from Pittsburgh to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Compare providers for flights from Pittsburgh 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 Pittsburgh to Ontario in January.

Best time to book a flight from Pittsburgh to Ontario

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

Cheapflights Insights

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

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

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Pittsburgh to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Pittsburgh 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 Pittsburgh to Ontario?

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

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

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

How can I find direct flights from Pittsburgh to Ontario?

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

What is the cheapest month to book a flight from Pittsburgh 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 Pittsburgh to Ontario

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

Top 3 airlines flying from Pittsburgh to Ontario

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Cheapest flights from Pittsburgh to Ontario
Explore the most affordable flight options available from Pittsburgh to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.