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$134+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ONT
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$260
(Kiwi.com)

One-way from

$134
(Kiwi.com)

Popular in

January

Cheapest in

April

Average price

$441
From Pittsburgh to Ontario
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One-way flight from Pittsburgh to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Wed 10/15:25 pmPIT - ONT
1 stop7h 31mMultiple Airlines
Wed 10/88:00 amONT - PIT
1 stop29h 09mMultiple Airlines
Deal found 9/13$260
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Wed 10/85:17 pmPIT - ONT
1 stop18h 53mMultiple Airlines
Thu 10/236:54 pmONT - PIT
1 stop18h 15mMultiple Airlines
Deal found 9/14$270
This Frontier deal was found by Cheapflights users on 9/14. 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 10/245:40 pmPIT - ONT
1 stop9h 10mFrontier
Mon 11/36:53 amONT - PIT
1 stop6h 42mFrontier
Deal found 9/14$271
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Mon 10/135:17 pmPIT - ONT
1 stop30h 25mMultiple Airlines
Mon 10/2012:32 pmONT - PIT
2 stops31h 44mMultiple Airlines
Deal found 9/15$273
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Thu 10/305:17 pmPIT - ONT
1 stop7h 38mMultiple Airlines
Tue 11/118:00 amONT - PIT
1 stop10h 37mMultiple Airlines
Deal found 9/14$279
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:40 pmPIT - ONT
1 stop9h 10mFrontier
Sun 10/266:53 amONT - PIT
1 stop6h 45mFrontier
Deal found 9/15$281
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Wed 10/225:17 pmPIT - ONT
1 stop18h 53mMultiple Airlines
Sun 10/266:44 pmONT - PIT
1 stop18h 25mMultiple Airlines
Deal found 9/15$282
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Mon 10/275:17 pmPIT - ONT
1 stop7h 48mMultiple Airlines
Thu 10/301:46 pmONT - PIT
2 stops25h 00mMultiple Airlines
Deal found 9/16$288
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:06 pmPIT - ONT
1 stop6h 44mFrontier
Sun 10/126:53 amONT - PIT
1 stop6h 52mFrontier
Deal found 9/15$290

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 September 16, 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

Fri 10/24

4:50 pm-10:22 pm

1 stop8h 32m

Ontario

Mon 10/27

10:00 pm-10:34 am

1 stop9h 34m

$315

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sun 11/16

5:10 am-9:10 am

1 stop7h 00m

Ontario

Mon 11/24

2:15 pm-11:30 pm

1 stop6h 15m

$333

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 12/3

6:00 am-10:40 am

1 stop7h 40m

Ontario

Sun 12/7

10:25 pm-9:08 am

1 stop7h 43m

$377

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 10/30

6:09 am-12:01 pm

2 stops8h 52m

Ontario

Tue 11/11

9:59 am-10:06 pm

2 stops9h 07m

$386

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 11/22

10:32 pm-2:26 pm

1 stop18h 54m

Ontario

Sun 12/7

4:51 pm-9:35 pm

1 stop25h 44m

$391

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 12/4

5:30 pm-11:59 pm

1 stop9h 29m

Ontario

Sun 12/7

10:25 pm-9:08 am

1 stop7h 43m

$394

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 10/18

7:59 pm-12:03 am

1 stop31h 04m

Ontario

Fri 10/31

6:00 am-6:32 pm

1 stop9h 32m

$408

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 10/22

5:17 pm-9:35 am

2 stops19h 18m

$156

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 11/18

5:23 pm-11:04 pm

1 stop8h 41m

$158

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 10/30

6:45 am-12:37 pm

1 stop8h 52m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
1
2

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, August is the cheapest month in which you can book a flight from Pittsburgh to Ontario (average of $246). Flying from Pittsburgh to Ontario in March is currently the most expensive (average of $327). 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 September 16, 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 12% 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 September 16, 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
4,242 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

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
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

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 $333, Delta can have you in Ontario from Pittsburgh in 7h. 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 $268. Other airlines that can offer you cheap pricing are Southwest, from $301, and United Airlines, from $321. American Airlines is currently priced 39% 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 Delta ($158), United Airlines ($158), and JetBlue ($182).

  • 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, August is the cheapest month in which you can book a flight from Pittsburgh to Ontario (average of $246). Flying from Pittsburgh to Ontario in March is currently the most expensive (average of $327). 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$430FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$301Average$410FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$321Average$506FlexibilityNo cancel feeOn-time69%

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