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$133+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$244
(Kiwi.com)

One-way from

$133
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$532
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. 16% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Tue 9/95:25 pmPIT - ONT
1 stop7h 31mMultiple Airlines
Tue 9/168:00 amONT - PIT
1 stop29h 20mMultiple Airlines
Deal found 8/12$244
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Sat 9/205:25 pmPIT - ONT
1 stop7h 31mMultiple Airlines
Mon 9/222:45 pmONT - PIT
1 stop22h 35mMultiple Airlines
Deal found 8/14$273
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Tue 9/165:25 pmPIT - ONT
1 stop7h 31mMultiple Airlines
Tue 9/308:00 amONT - PIT
1 stop29h 20mMultiple Airlines
Deal found 8/13$277
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Tue 9/911:09 amPIT - ONT
2 stops10h 07mAmerican Airlines
Tue 9/1610:53 amONT - PIT
1 stop8h 45mAmerican Airlines
Deal found 8/12$282
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:10 pmPIT - ONT
1 stop18h 29mAlaska Airlines
Wed 12/1011:30 amONT - PIT
1 stop27h 40mAlaska Airlines
Deal found 8/11$296
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 12/66:53 amPIT - ONT
1 stop7h 37mAmerican Airlines
Wed 12/1010:34 amONT - PIT
2 stops9h 36mAmerican Airlines
Deal found 8/11$302
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 9/115:25 pmPIT - ONT
1 stop16h 52mMultiple Airlines
Sun 9/1410:28 pmONT - PIT
1 stop14h 52mMultiple Airlines
Deal found 8/13$306
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:20 amPIT - ONT
1 stop7h 25mSouthwest
Sat 9/131:25 pmONT - PIT
1 stop6h 20mSouthwest
Deal found 8/13$315

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 August 14, 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 9/9

5:25 pm-9:56 pm

1 stop7h 31m

Ontario

Tue 9/16

8:00 am-4:20 pm

1 stop29h 20m

$244

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 9/20

5:25 pm-9:56 pm

1 stop7h 31m

Ontario

Mon 9/22

2:45 pm-4:20 pm

1 stop22h 35m

$273

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/16

5:25 pm-9:56 pm

1 stop7h 31m

Ontario

Tue 9/30

8:00 am-4:20 pm

1 stop29h 20m

$277

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/16

5:13 pm-9:24 pm

1 stop7h 11m

Ontario

Tue 9/30

10:53 am-11:07 pm

2 stops9h 14m

$282

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/9

11:09 am-6:16 pm

2 stops10h 07m

Ontario

Tue 9/16

10:53 am-10:38 pm

1 stop8h 45m

$282

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 12/6

7:10 pm-10:39 am

1 stop18h 29m

Ontario

Wed 12/10

11:30 am-6:10 pm

1 stop27h 40m

$296

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 12/6

6:53 am-11:30 am

1 stop7h 37m

Ontario

Wed 12/10

10:34 am-11:10 pm

2 stops9h 36m

$302

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 9/11

5:25 pm-7:17 am

1 stop16h 52m

Ontario

Sun 9/14

10:28 pm-4:20 pm

1 stop14h 52m

$306

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 10/4

5:25 pm-9:56 pm

1 stop7h 31m

$133

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/23

8:08 am-2:12 pm

1 stop9h 04m

$138

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 16 results
1
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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 $328). 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 August 14, 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 August 14, 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
4,244 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
4,244 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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.

  • 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.

  • 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 $328). 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$407FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$301Average$394FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$321Average$516FlexibilityNo cancel feeOn-time69%

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