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$90+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ONT
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheap flight deals from Pittsburgh to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Pittsburgh (PIT) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$212
(Trip.com)

One-way from

$90
(Trip.com)

Popular in

January

Cheapest in

November

Average price

$464
Provider with most accurate pricing for Pittsburgh-Ontario flight deals.
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Provider most trusted by Cheapflights users for Pittsburgh-Ontario flights.
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From Pittsburgh to Ontario
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One-way flight from Pittsburgh to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 22, 2025.

This Trip.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:30 pmPIT - ONT
1 stop9h 20mFrontier
Mon 11/176:53 amONT - PIT
1 stop6h 42mFrontier
Deal found 10/21$212
This Frontier deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:30 pmPIT - ONT
1 stop9h 20mFrontier
Mon 11/106:53 amONT - PIT
1 stop6h 42mFrontier
Deal found 10/20$222
This Frontier deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:30 pmPIT - ONT
1 stop9h 20mFrontier
Mon 11/176:53 amONT - PIT
1 stop6h 42mFrontier
Deal found 10/22$246
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:15 amPIT - ONT
2 stops10h 47mAmerican Airlines
Wed 12/109:59 amONT - PIT
1 stop9h 44mAmerican Airlines
Deal found 10/21$278
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/95:21 pmPIT - ONT
1 stop16h 56mMultiple Airlines
Wed 11/128:00 amONT - PIT
1 stop29h 23mMultiple Airlines
Deal found 10/21$287
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:31 pmPIT - ONT
1 stop9h 27mDelta
Wed 12/1010:25 pmONT - PIT
1 stop7h 47mDelta
Deal found 10/21$297
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:24 amPIT - ONT
1 stop8h 29mAmerican Airlines
Sun 12/712:55 pmONT - PIT
1 stop6h 48mAmerican Airlines
Deal found 10/20$298
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:22 pmPIT - ONT
1 stop7h 33mAmerican Airlines
Tue 12/1612:55 pmONT - PIT
1 stop6h 48mAmerican Airlines
Deal found 10/21$299
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:29 pmPIT - ONT
1 stop9h 23mDelta
Wed 12/37:05 amONT - PIT
1 stop9h 20mDelta
Deal found 10/21$302

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pittsburgh to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from Pittsburgh to Ontario that are best for you.

Fly from

Pittsburgh

Fly to

Ontario

Route

Depart

Return

Price

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 12/16

6:00 am-11:02 am

1 stop8h 02m

Ontario

Mon 1/5

1:00 pm-11:13 pm

1 stop7h 13m

$297

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 11/24

5:29 pm-11:52 pm

1 stop9h 23m

Ontario

Thu 12/4

6:00 am-4:36 pm

1 stop7h 36m

$302

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 1/23

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Mon 1/26

6:00 am-6:46 pm

1 stop9h 46m

$314

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sun 2/8

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Thu 2/12

6:00 am-6:10 pm

1 stop9h 10m

$314

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sun 12/7

5:31 pm-11:58 pm

1 stop9h 27m

Ontario

Tue 12/9

6:00 am-4:36 pm

1 stop7h 36m

$315

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sun 12/7

6:00 am-11:02 am

1 stop8h 02m

Ontario

Thu 12/11

12:12 pm-12:12 am

1 stop9h 00m

$315

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 12/5

5:31 pm-11:58 pm

1 stop9h 27m

Ontario

Sat 12/6

6:40 am-11:47 am

2 stops26h 07m

$315

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sun 12/7

5:26 pm-11:04 pm

1 stop8h 38m

Ontario

Wed 12/10

10:25 pm-10:55 am

1 stop9h 30m

$315

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 12/6

11:52 am-11:13 am

2 stops26h 21m

Ontario

Tue 12/9

12:12 pm-12:12 am

1 stop9h 00m

$315

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 12/6

11:52 am-11:13 am

2 stops26h 21m

Ontario

Thu 12/11

6:00 am-4:36 pm

1 stop7h 36m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 23 results
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-Ontario flight deals on Cheapflights vs. FlightHub >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 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 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 $238). 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 PIT to ONT?

Find hourly flight availability from Pittsburgh to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

When flying from Pittsburgh to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 11% versus a flight in the afternoon.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated October 22, 2025.
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
4,237 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

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

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

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.
United Airlines
7.4
Good
8,990 reviews
Southwest
8.0
Very good
4,237 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

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.
American Airlines
7.2
Good
11,028 reviews
Southwest
8.0
Very good
4,237 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

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.

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?

    For as low as $297, Delta can have you in Ontario from Pittsburgh in 8h 02m. 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 33% below the average price you’ll pay for this route.

  • 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 $238). 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

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Alternative routes for Pittsburgh to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Pittsburgh to Ontario

Discover the top 3 airlines that operate flights from Pittsburgh to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$296Average$499FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$303Average$415FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$306Average$480FlexibilityNo cancel feeOn-time71%

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