HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$76+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ONT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pittsburgh to Ontario 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.

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 July 3, 2025.

Round-trip from

$259
(Frontier)

One-way from

$76
(Mytrip)

Popular in

January

Cheapest in

November

Average price

$426
From Pittsburgh to Ontario
Search Deals
One-way flight from Pittsburgh to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 3, 2025.

This Frontier deal was found by Cheapflights users on 7/2. 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.
Mon 8/45:40 pmPIT - ONT
1 stop9h 10mFrontier
Wed 8/67:22 pmONT - PIT
2 stops16h 07mFrontier
Deal found 7/2$259
This Orbitz deal was found by Cheapflights users on 7/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/45:40 pmPIT - ONT
1 stop9h 10mMultiple Airlines
Wed 8/66:58 pmONT - PIT
1 stop8h 45mMultiple Airlines
Deal found 7/1$267
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/55:27 pmPIT - ONT
1 stop8h 25mUnited Airlines
Wed 8/66:00 amONT - PIT
1 stop6h 57mUnited Airlines
Deal found 7/1$284
This Delta deal was found by Cheapflights users on 7/1. 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 9/96:00 amPIT - ONT
1 stop7h 35mDelta
Tue 9/1610:00 pmONT - PIT
1 stop7h 55mDelta
Deal found 7/1$297
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/55:00 amPIT - ONT
2 stops10h 00mAmerican Airlines
Wed 8/66:17 amONT - PIT
2 stops11h 31mAmerican Airlines
Deal found 7/1$299
This Alaska Airlines deal was found by Cheapflights users on 7/3. 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.
Fri 10/247:59 pmPIT - ONT
1 stop19h 38mAlaska Airlines
Mon 10/2711:39 amONT - PIT
1 stop27h 55mAlaska Airlines
Deal found 7/3$365
This Southwest deal was found by Cheapflights users on 7/2. 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.
Mon 8/115:15 pmPIT - ONT
1 stop7h 45mSouthwest
Fri 8/159:15 amONT - PIT
2 stops9h 20mSouthwest
Deal found 7/2$371

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 July 3, 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

Mon 8/4

5:40 pm-11:50 pm

1 stop9h 10m

Ontario

Wed 8/6

7:22 pm-2:29 pm

2 stops16h 07m

$259

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 8/4

5:40 pm-11:50 pm

1 stop9h 10m

Ontario

Wed 8/6

6:58 pm-6:43 am

1 stop8h 45m

$267

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 8/5

5:27 pm-10:52 pm

1 stop8h 25m

Ontario

Wed 8/6

6:00 am-3:57 pm

1 stop6h 57m

$284

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/9

5:30 pm-10:40 pm

1 stop8h 10m

Ontario

Wed 9/17

11:55 am-11:02 pm

1 stop8h 07m

$297

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 8/5

5:00 am-12:00 pm

2 stops10h 00m

Ontario

Wed 8/6

6:17 am-8:48 pm

2 stops11h 31m

$299

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 8/11

5:15 pm-10:00 pm

1 stop7h 45m

Ontario

Fri 8/15

9:15 am-9:35 pm

2 stops9h 20m

$371

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 8/11

5:40 pm-11:50 pm

1 stop9h 10m

$76

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 8/8

7:15 pm-4:20 pm

1 stop24h 05m

$139

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 9/3

1:43 pm-7:11 pm

1 stop8h 28m

$149

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 8/16

8:03 am-2:46 pm

1 stop9h 43m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 14 results
1
2

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 July 3, 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 July 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

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

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

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
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

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
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

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
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

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
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

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 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 $259. Other airlines that can offer you cheap pricing are United Airlines, from $284, and Delta, from $297. Frontier is currently priced 40% below the average price you’ll pay for this route.

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

    The cheapest airlines for a one-way flight from Pittsburgh to Ontario are Frontier ($76), Delta ($149), and Alaska Airlines ($179).

  • 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

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 Pittsburgh to Ontario

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

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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$402FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$303Average$391FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$321Average$479FlexibilityNo cancel feeOn-time69%

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.