Pittsburgh

$159+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PIT
Apr 13 — Apr 201
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1. Tell us where you want to go

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Cheap 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 March 14, 2026.

This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:55 pm
ONT
-
PIT
1 stop7h 20m
Southwest
Wed 4/155:25 pm
PIT
-
ONT
1 stop8h 00m
Southwest
Deal found 3/12$317
This American Airlines deal was found by Cheapflights users on 3/10. 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 4/111:58 pm
ONT
-
PIT
1 stop7h 45m
American Airlines
Sat 4/411:34 am
PIT
-
ONT
2 stops10h 35m
American Airlines
Deal found 3/10$322
This American Airlines deal was found by Cheapflights users on 3/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:26 pm
ONT
-
PIT
1 stop8h 17m
American Airlines
Sat 4/253:30 pm
PIT
-
ONT
1 stop8h 37m
American Airlines
Deal found 3/14$331
This Southwest deal was found by Cheapflights users on 3/13. 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 5/285:30 am
ONT
-
PIT
1 stop7h 30m
Southwest
Mon 6/15:35 pm
PIT
-
ONT
1 stop8h 30m
Southwest
Deal found 3/13$333
This Delta deal was found by Cheapflights users on 3/10. 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.
Tue 6/26:00 am
ONT
-
PIT
1 stop7h 40m
Delta
Tue 6/95:35 pm
PIT
-
ONT
1 stop9h 09m
Delta
Deal found 3/10$335
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:25 pm
ONT
-
PIT
1 stop7h 39m
Delta
Wed 4/155:32 pm
PIT
-
ONT
1 stop9h 12m
Delta
Deal found 3/12$337
This American Airlines deal was found by Cheapflights users on 3/12. 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 4/711:59 pm
ONT
-
PIT
2 stops10h 05m
American Airlines
Wed 4/1511:34 am
PIT
-
ONT
2 stops9h 56m
American Airlines
Deal found 3/12$345

Find 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 March 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(Southwest)

One-way from

$159
(Alaska Airlines)

Popular in

March

Cheapest in

February

Average price

$514
Provider with most accurate pricing for Ontario-Pittsburgh flight deals.
Provider most trusted by Cheapflights users for Ontario-Pittsburgh flights.
From Ontario to Pittsburgh
One-way flight from Ontario to Pittsburgh
Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in March 2026

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 March 14, 2026.
Use the filters below to find and compare flights from Ontario to Pittsburgh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 4/25

6:05 am-3:53 pm

1 stop6h 48m

Pittsburgh

Tue 4/28

4:18 pm-8:36 pm

1 stop7h 18m

$417

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 4/2

9:55 pm-10:05 am

2 stops9h 10m

Pittsburgh

Mon 4/6

6:25 pm-12:10 am

2 stops8h 45m

$438

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 5/6

1:40 pm-11:49 pm

1 stop7h 09m

Pittsburgh

Sat 5/9

8:20 am-5:52 pm

2 stops12h 32m

$441

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 4/11

5:10 am-3:02 pm

1 stop6h 52m

Pittsburgh

Sat 4/18

8:19 am-5:47 pm

2 stops12h 28m

$442

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 5/30

5:30 am-3:50 pm

1 stop7h 20m

Pittsburgh

Sun 6/28

5:20 am-9:20 am

1 stop7h 00m

$457

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Fri 5/1

7:59 pm-6:21 pm

1 stop19h 22m

Pittsburgh

Mon 5/4

7:17 pm-9:45 am

1 stop17h 28m

$460

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Tue 5/12

6:00 am-6:21 pm

1 stop9h 21m

Pittsburgh

Tue 5/19

7:00 am-3:09 pm

1 stop11h 09m

$462

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 5/7

1:55 pm-12:50 am

1 stop7h 55m

Pittsburgh

Sun 5/10

6:10 am-3:10 pm

1 stop12h 00m

$464

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Fri 4/24

6:00 am-6:21 pm

1 stop9h 21m

Pittsburgh

Sat 4/25

7:17 pm-9:45 am

1 stop17h 28m

$470
Cheapest one-way

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 5/6

6:00 am-6:21 pm

1 stop9h 21m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Ontario to Pittsburgh

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 Ontario to Pittsburgh in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Ontario-Pittsburgh flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Pittsburgh flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Pittsburgh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Pittsburgh 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 Ontario-Pittsburgh 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 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 March 6, 2026.

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, July is the cheapest month in which you can book a flight from Ontario to Pittsburgh (average of $109). Flying from Ontario to Pittsburgh in January is currently the most expensive (average of $297). 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 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 March 14, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines 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.

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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.
  • How long is the flight from Ontario to Pittsburgh?

    Departing from Ontario to Pittsburgh will take you 6h 48m. The distance from Ontario to Pittsburgh 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 Ontario to Pittsburgh round-trip?

    American Airlines, at $285, was found to be the cheapest airline from Ontario to Pittsburgh.Alternate airlines to your destination round-trip include United Airlines and Delta. American Airlines is 30% 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 American Airlines, which is currently one of the cheapest options available, starting at $138. Delta flights start at $138 while deals on Southwest start at $153 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, July is the cheapest month in which you can book a flight from Ontario to Pittsburgh (average of $109). Flying from Ontario to Pittsburgh in January is currently the most expensive (average of $297). 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
Chester
Steubenville
Washington
Monroeville
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.

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 March 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$285Average$420FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$438FlexibilityNo cancel feeOn-time69%
DeltaCheapest$296Average$449FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$306Average$397FlexibilityNo cancel feeOn-time63%

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