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$124+ Cheap flights from Ontario to Pittsburgh (ONT - PIT)

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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PIT
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Pittsburgh are usually found in August or September, booked 68 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from Ontario to Pittsburgh

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Pittsburgh (PIT). 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 July 29, 2025.

Round-trip from

$269
(Trip.com)

One-way from

$124
(Trip.com)

Popular in

February

Cheapest in

August

Average price

$442
From Ontario to Pittsburgh
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One-way flight from Ontario to Pittsburgh
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Highest demand for flights based on searches. 11% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Ontario to Pittsburgh

Cheapest flights from Ontario to Pittsburgh
Explore the most affordable flight options available from Ontario to Pittsburgh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Trip.com deal was found by Cheapflights users on 7/27. 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 8/116:00 amONT - PIT
1 stop9h 10mMultiple Airlines
Mon 8/188:12 amPIT - ONT
1 stop15h 40mMultiple Airlines
Deal found 7/27$269
This Frontier deal was found by Cheapflights users on 7/27. 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.
Sun 8/1012:59 amONT - PIT
1 stop12h 46mFrontier
Fri 8/155:40 pmPIT - ONT
1 stop9h 10mFrontier
Deal found 7/27$278
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 9/33:06 pmONT - PIT
1 stop24h 36mAlaska Airlines
Sat 9/67:42 pmPIT - ONT
1 stop18h 02mAlaska Airlines
Deal found 7/29$294
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/2711:59 pmONT - PIT
1 stop8h 10mAmerican Airlines
Tue 9/25:06 amPIT - ONT
1 stop7h 52mAmerican Airlines
Deal found 7/28$295
This Delta deal was found by Cheapflights users on 7/27. 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 9/107:05 amONT - PIT
1 stop6h 57mDelta
Wed 9/174:21 pmPIT - ONT
1 stop9h 02mDelta
Deal found 7/27$297
This Southwest deal was found by Cheapflights users on 7/29. 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.
Tue 9/210:55 amONT - PIT
1 stop8h 00mSouthwest
Fri 9/54:15 pmPIT - ONT
1 stop9h 15mSouthwest
Deal found 7/29$341
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/267:00 amONT - PIT
1 stop6h 55mUnited Airlines
Tue 9/28:56 amPIT - ONT
1 stop6h 36mUnited Airlines
Deal found 7/28$395

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Pittsburgh 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 July 29, 2025.
Use the filters below to find and compare flights from Ontario to Pittsburgh that are best for you.

Fly from

Ontario

Fly to

Pittsburgh

Route

Depart

Return

Price

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Mon 8/11

6:00 am-6:10 pm

1 stop9h 10m

Pittsburgh

Mon 8/18

8:12 am-8:52 pm

1 stop15h 40m

$269

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sun 8/10

12:59 am-4:45 pm

1 stop12h 46m

Pittsburgh

Fri 8/15

5:40 pm-11:50 pm

1 stop9h 10m

$278

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 9/3

3:06 pm-6:42 pm

1 stop24h 36m

Pittsburgh

Sat 9/6

7:42 pm-10:44 am

1 stop18h 02m

$294

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 8/27

11:59 pm-11:09 am

1 stop8h 10m

Pittsburgh

Tue 9/2

5:06 am-9:58 am

1 stop7h 52m

$295

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 9/10

7:05 am-5:02 pm

1 stop6h 57m

Pittsburgh

Wed 9/17

4:21 pm-10:23 pm

1 stop9h 02m

$297

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Tue 9/2

10:55 am-9:55 pm

1 stop8h 00m

Pittsburgh

Fri 9/5

5:20 am-12:40 pm

2 stops10h 20m

$346

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Tue 8/26

7:00 am-4:55 pm

1 stop6h 55m

Pittsburgh

Tue 9/2

8:56 am-12:32 pm

1 stop6h 36m

$395

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 8/28

6:00 am-7:07 am

1 stop22h 07m

$124

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sun 8/3

12:59 am-4:45 pm

1 stop12h 46m

$145

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Tue 10/28

6:00 am-6:32 pm

1 stop9h 32m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 14 results
1
2

Best time to book a flight from Ontario to Pittsburgh

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

How far ahead should I book a flight from Ontario to Pittsburgh?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Pittsburgh. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from Ontario to Pittsburgh, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Pittsburgh (average of $262). Flying from Ontario to Pittsburgh in November is currently the most expensive (average of $332). 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 ONT to PIT?

Find hourly flight availability from Ontario to Pittsburgh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

One of the essential ways to save on airfare from Ontario to Pittsburgh is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 23% on airfare.

Reviews of airlines servicing Pittsburgh

Get insights into the airlines that provide service to Pittsburgh. 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 Pittsburgh. Reviews last updated July 29, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Ontario to Pittsburgh have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Pittsburgh. 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 Ontario to Pittsburgh round-trip?

    Frontier, at $278, was found to be the cheapest airline from Ontario to Pittsburgh.Alternate airlines to your destination round-trip include Alaska Airlines and American Airlines. Frontier is 39% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $145. Alaska Airlines flights start at $147 while deals on American Airlines start at $148 one-way.

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

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

  • How can I find direct flights from Ontario to Pittsburgh?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Pittsburgh 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 Ontario to Pittsburgh?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Pittsburgh (average of $262). Flying from Ontario to Pittsburgh in November is currently the most expensive (average of $332). 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

Traveling to a place near Pittsburgh?

Book flights to Pittsburgh if you plan to visit one of these locations
Mars
Steubenville
Monroeville
Washington
Wexford
Belle Vernon

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Alternative routes for Ontario to Pittsburgh

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Ontario to Pittsburgh

Discover the top 4 airlines that operate flights from Ontario to Pittsburgh. 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$228Average$467FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$466FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$325Average$439FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$342Average$458FlexibilityNo cancel feeOn-time71%

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