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CA $331 Cheap Flights from Ontario Intl. Airport (ONT) to Pittsburgh (PIT)

View CA $331 flight on Sat, Oct 3, 2026Opens in a new window

Popular airlines from Ontario Intl. Airport (ONT) to Pittsburgh International Airport (PIT)

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Cheap flights from Ontario Intl. Airport (ONT) to Pittsburgh (PIT)

Prices were available within the past 7 days and start at CA $331 for one-way flights and CA $529 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $529 Roundtrip, found 4 days ago
CA $529
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $529 found 4 days ago
American Airlines
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $555 Roundtrip, found 4 days ago
CA $555
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $555 found 4 days ago
American Airlines
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $559 Roundtrip, found 4 days ago
CA $559
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $559 found 4 days ago
American Airlines
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $567 Roundtrip, found 4 days ago
CA $567
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $567 found 4 days ago
American Airlines
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $576 Roundtrip, found 4 days ago
CA $576
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $576 found 4 days ago
American Airlines
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $589 Roundtrip, found 4 days ago
CA $589
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $589 found 4 days ago
American Airlines
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $593 Roundtrip, found 4 days ago
CA $593
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $593 found 4 days ago
United
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $620 Roundtrip, found 4 days ago
CA $620
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $620 found 4 days ago
Delta
Sat, Oct 3 - Sat, Oct 10
ONT
Ontario
PIT
Pittsburgh
CA $631 Roundtrip, found 4 days ago
CA $631
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Oct 3 from Ontario to Pittsburgh, returning Sat, Oct 10, priced at CA $631 found 4 days ago
Alaska Airlines
Wed, Nov 18 - Mon, Nov 23
ONT
Ontario
PIT
Pittsburgh
CA $829 Roundtrip, found 2 days ago
CA $829
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Nov 18 from Ontario to Pittsburgh, returning Mon, Nov 23, priced at CA $829 found 2 days ago

Find the cheapest month to fly from Ontario (ONT) to Pittsburgh (PIT)

February is typically the cheapest month to fly

From CA $258 - CA $516 per traveller.

Frequently asked questions

How much does a flight from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) cost?
You can find one-way and return flights from ONT to PIT with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to PIT ticket fares go up or down.
What is the cheapest month to fly from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
The cheapest months to fly from ONT to PIT are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
Enter ONT to PIT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
Southwest Airlines is one of the cheapest airlines offering connecting flights from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.), with return tickets starting from around CA$314 for flights that can be booked for departure within the next year. These flights typically include a layover in Sky Harbor Intl. (PHX). Prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
To find a cheap flight from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
There are approximately 42 connecting flights per day from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.). Some common connection points include Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA), and Denver Intl. (DEN).
What is the earliest flight from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
The earliest flight from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) typically departs around 12:55 AM local time, operated by American Airlines. This is a seasonal service active in August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
You'll typically find the most flights from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) on a Sunday, with around 37 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Southwest Airlines, Alaska Airlines, and American Airlines. Flight schedules are quite consistent throughout the week, so you'll have plenty of options no matter which day you choose to fly.
What are the most popular departure times for flights from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
The most popular departure times for flights from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) are in the morning, from 6am to 9am. Many major carriers, including Southwest Airlines, United and American Airlines, offer flights during this window. Many travellers prefer this time because it allows for an early start to their journey, getting them to their destination with plenty of day left.
How long does it take to fly from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
There are no nonstop flights from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.). The distance between these two airports is approximately 3354 kilometres. For flights with one stop, you can expect the journey to take around 7 hours 18 minutes. If your flight has two or more stops, the travel time typically increases to about 11 hours 48 minutes. Keep in mind that these are average times, and your actual travel duration can vary depending on the specific routing, layover times, and even weather conditions.
Can you fly business or first class from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
Yes, you can fly business class or first class between Ontario Intl. Airport (ONT) and Pittsburgh, PA (PIT-Pittsburgh Intl.).You can fly business class with Delta.First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.
How do I earn miles on a Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight with Expedia?
It's easy to earn miles on a Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Pittsburgh, PA (PIT) from Ontario Intl. Airport (ONT)?
If you're planning to travel to Pittsburgh from Los Angeles - Ontario Intl. (ONT), you can fly directly into Pittsburgh Intl. (PIT). Some flights may connect through major hubs like Sky Harbor Intl. (PHX), Denver Intl. (DEN), or Dallas-Fort Worth Intl. (DFW) before reaching Pittsburgh. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) at the last minute?
Typically, booking a last minute flight from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight and hotel package?
Securing a Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.)?
If you booked your Ontario Intl. Airport (ONT) to Pittsburgh, PA (PIT-Pittsburgh Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Pittsburgh Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
CA $528
Distance
3334 km

Book with confidence

Los Angeles to Pittsburgh Flights

The easy way to book your flights from Ontario Intl. Airport to Pittsburgh 

With Expedia, it’s simple to find and book flights to Pittsburgh from Ontario Intl. Airport whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Pittsburgh Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ontario Intl. Airport to Pittsburgh today, tomorrow, or this week.  

 

Save dollars with cheap flights from Ontario Intl. Airport, ONT to Pittsburgh Intl., PIT 

Sort your search results by price to find great deals on your flight from Ontario Intl. Airport to Pittsburgh—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Pittsburgh from Ontario Intl. Airport currently is just CA $529 rising to CA $1,368.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Pittsburgh  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Pittsburgh from Ontario Intl. Airport 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Pittsburgh with Expedia today.

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