HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Pittsburgh

$121+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PIT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Pittsburgh with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Ontario to Pittsburgh are usually found in September or August, 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 September 11, 2025.

Round-trip from

$230
(Southwest)

One-way from

$121
(Hawaiian Airlines)

Popular in

February

Cheapest in

September

Average price

$375
From Ontario to Pittsburgh
Search Deals
One-way flight from Ontario to Pittsburgh
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/9. 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.
Sat 10/2511:05 amONT - PIT
1 stop9h 40mSouthwest
Tue 10/281:10 pmPIT - ONT
1 stop7h 35mSouthwest
Deal found 9/9$230
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/298:00 amONT - PIT
1 stop29h 09mMultiple Airlines
Sun 11/29:46 pmPIT - ONT
2 stops24h 03mMultiple Airlines
Deal found 9/9$255
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Fri 9/2610:28 pmONT - PIT
1 stop14h 52mMultiple Airlines
Mon 9/295:25 pmPIT - ONT
2 stops29h 29mMultiple Airlines
Deal found 9/9$261
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1712:32 pmONT - PIT
2 stops26h 06mMultiple Airlines
Mon 10/205:17 pmPIT - ONT
1 stop7h 48mMultiple Airlines
Deal found 9/11$263
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/2112:47 pmONT - PIT
1 stop6h 40mAmerican Airlines
Thu 10/235:15 amPIT - ONT
1 stop7h 52mAmerican Airlines
Deal found 9/11$264
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:00 amONT - PIT
1 stop9h 32mMultiple Airlines
Mon 11/105:30 pmPIT - ONT
1 stop9h 20mMultiple Airlines
Deal found 9/10$284
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:47 pmONT - PIT
1 stop14h 22mMultiple Airlines
Sun 11/25:17 pmPIT - ONT
1 stop17h 00mMultiple Airlines
Deal found 9/11$285
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:47 pmONT - PIT
1 stop14h 22mMultiple Airlines
Mon 10/275:17 pmPIT - ONT
1 stop30h 25mMultiple Airlines
Deal found 9/11$291
This Delta deal was found by Cheapflights users on 9/9. 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 10/1510:00 pmONT - PIT
1 stop7h 57mDelta
Sat 10/255:30 pmPIT - ONT
1 stop6h 50mDelta
Deal found 9/9$297

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 September 11, 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

Sat 10/25

11:05 am-11:45 pm

1 stop9h 40m

Pittsburgh

Tue 10/28

1:10 pm-5:45 pm

1 stop7h 35m

$230

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sun 10/26

10:47 pm-4:09 pm

1 stop14h 22m

Pittsburgh

Sun 11/2

9:46 pm-6:49 pm

2 stops24h 03m

$276

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 11/13

10:25 pm-10:38 am

1 stop9h 13m

Pittsburgh

Wed 11/19

5:28 pm-11:52 pm

1 stop9h 24m

$297

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sun 10/26

10:00 pm-8:57 am

1 stop7h 57m

Pittsburgh

Tue 10/28

6:00 am-10:26 am

1 stop7h 26m

$297

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 10/30

6:00 am-4:33 pm

1 stop7h 33m

Pittsburgh

Sun 11/2

4:50 pm-10:22 pm

1 stop8h 32m

$297

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 10/25

10:09 am-11:18 pm

2 stops10h 09m

Pittsburgh

Tue 10/28

5:40 am-12:01 pm

2 stops9h 21m

$302

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 10/30

10:40 pm-4:35 pm

2 stops14h 55m

Pittsburgh

Mon 11/3

5:30 pm-11:50 pm

1 stop9h 20m

$302

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Fri 10/17

12:50 pm-11:35 pm

1 stop7h 45m

Pittsburgh

Mon 10/20

6:00 pm-10:50 pm

1 stop7h 50m

$340

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 10/22

7:02 am-4:52 pm

1 stop6h 50m

Pittsburgh

Sat 10/25

9:05 am-12:51 pm

1 stop6h 46m

$343

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 11/1

1:29 pm-10:45 pm

1 stop6h 16m

Pittsburgh

Tue 11/4

8:30 am-12:31 pm

1 stop7h 01m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 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 August 29, 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 $333). 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 September 11, 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 September 11, 2025.
See what other customers who have flown with Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

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.
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

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
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

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 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 9h 13m. 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?

    United Airlines, at $286, was found to be the cheapest airline from Ontario to Pittsburgh.Alternate airlines to your destination round-trip include Delta and Southwest. United Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 $333). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Pittsburgh

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Newark flights
San Francisco to Newark flights
Los Angeles to LaGuardia flights
Ontario to John F Kennedy Intl flights
San Francisco to LaGuardia flights
Burbank to Newark flights
Ontario to Newark flights
Santa Ana to Newark flights
Los Angeles to Reagan-National flights
Burbank to LaGuardia flights
Los Angeles to Dulles Intl flights
Santa Ana to LaGuardia flights
San Diego to John F Kennedy Intl flights
San Diego to Newark flights
San Francisco to Reagan-National flights
Santa Ana to John F Kennedy Intl flights
San Francisco to Dulles Intl flights
Ontario to LaGuardia flights
San Francisco to Philadelphia flights
San Jose to Newark flights
San Jose to John F Kennedy Intl flights
San Diego to LaGuardia flights
Ontario to Dulles Intl flights
Oakland to Newark flights
San Diego to Dulles Intl flights
Las Vegas to John F Kennedy Intl flights
Las Vegas to Newark flights
Los Angeles to Philadelphia flights
Burbank to John F Kennedy Intl flights
San Diego to Reagan-National flights
Ontario to Reagan-National flights
Sacramento to Newark flights
Sacramento to John F Kennedy Intl flights
Oakland to John F Kennedy Intl flights
San Jose to LaGuardia flights
Las Vegas to LaGuardia flights
San Francisco to Pittsburgh flights
San Jose to Dulles Intl flights
Santa Ana to Reagan-National flights
Santa Ana to Dulles Intl flights
Ontario to Philadelphia flights
Sacramento to LaGuardia flights
San Jose to Reagan-National flights
Oakland to LaGuardia flights
Sacramento to Dulles Intl flights
San Diego to Philadelphia flights
Oakland to Dulles Intl flights
Las Vegas to Dulles Intl flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$286Average$531FlexibilityNo cancel feeOn-time69%
DeltaCheapest$296Average$467FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$306Average$434FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$342Average$479FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.