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Ontario

$90+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — ONT
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap 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 January 28, 2026.

This Frontier deal was found by Cheapflights users on 1/26. 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 2/234:14 pm
PIT
-
ONT
1 stop10h 45m
Frontier
Mon 3/26:10 am
ONT
-
PIT
1 stop6h 09m
Frontier
Deal found 1/26$255
This Frontier deal was found by Cheapflights users on 1/26. 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 2/27:59 pm
PIT
-
ONT
1 stop7h 21m
Frontier
Fri 2/66:20 am
ONT
-
PIT
1 stop9h 44m
Frontier
Deal found 1/26$256
This United Airlines deal was found by Cheapflights users on 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:30 am
PIT
-
ONT
1 stop9h 18m
United Airlines
Wed 3/45:00 am
ONT
-
PIT
1 stop7h 17m
United Airlines
Deal found 1/27$257
This Frontier deal was found by Cheapflights users on 1/27. 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.
Mon 2/234:14 pm
PIT
-
ONT
1 stop10h 45m
Frontier
Fri 2/276:00 am
ONT
-
PIT
1 stop6h 19m
Frontier
Deal found 1/27$269
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/97:59 pm
PIT
-
ONT
1 stop28h 35m
Frontier
Thu 2/122:08 pm
ONT
-
PIT
1 stop22h 51m
Frontier
Deal found 1/27$273
This Frontier deal was found by Cheapflights users on 1/26. 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.
Fri 2/274:14 pm
PIT
-
ONT
1 stop10h 45m
Frontier
Mon 3/26:10 am
ONT
-
PIT
1 stop6h 09m
Frontier
Deal found 1/26$276
This United Airlines deal was found by Cheapflights users on 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:53 pm
PIT
-
ONT
1 stop7h 37m
United Airlines
Wed 5/201:40 pm
ONT
-
PIT
1 stop7h 09m
United Airlines
Deal found 1/27$277
This Frontier deal was found by Cheapflights users on 1/26. 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 2/27:59 pm
PIT
-
ONT
1 stop7h 21m
Frontier
Mon 2/96:20 am
ONT
-
PIT
1 stop9h 44m
Frontier
Deal found 1/26$282
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Wed 2/254:42 pm
PIT
-
ONT
1 stop8h 17m
United Airlines
Mon 3/21:45 pm
ONT
-
PIT
1 stop6h 12m
United Airlines
Deal found 1/25$286

Find 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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$255
(Frontier)

One-way from

$90
(Frontier)

Popular in

January

Cheapest in

December

Average price

$584
Provider with most accurate pricing for Pittsburgh-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Pittsburgh-Ontario flights.
Search Deals
From Pittsburgh to Ontario
Search Deals
One-way flight from Pittsburgh to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($8 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 January 2026
Search Deals

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 January 28, 2026.
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

Wed 3/18

3:00 pm-10:18 pm

2 stops10h 18m

Ontario

Tue 3/24

11:59 pm-1:57 pm

2 stops10h 58m

$268

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 5/19

6:00 pm-9:50 pm

1 stop6h 50m

Ontario

Wed 5/20

6:15 am-3:40 pm

1 stop6h 25m

$277

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

4:42 pm-9:59 pm

1 stop8h 17m

Ontario

Mon 3/2

1:45 pm-10:57 pm

1 stop6h 12m

$286

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 4/15

7:05 am-11:36 am

1 stop7h 31m

Ontario

Sat 4/18

10:15 pm-9:15 am

1 stop8h 00m

$297

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 4/11

7:05 am-11:47 am

1 stop7h 42m

Ontario

Tue 4/14

10:15 pm-9:15 am

1 stop8h 00m

$297

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 4/11

7:05 am-11:47 am

1 stop7h 42m

Ontario

Sat 4/18

10:15 pm-9:15 am

1 stop8h 00m

$297

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 4/14

9:19 am-6:24 pm

2 stops12h 05m

Ontario

Mon 4/20

11:29 pm-10:14 am

1 stop7h 45m

$299

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 4/14

8:10 am-6:33 pm

2 stops13h 23m

Ontario

Wed 4/15

10:15 pm-10:44 am

1 stop9h 29m

$302

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 4/15

6:00 am-11:36 am

1 stop8h 36m

Ontario

Wed 4/15

5:55 pm-11:45 am

2 stops14h 50m

$302

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 3/2

4:14 pm-11:59 pm

1 stop10h 45m

$90

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 19 results
1
2

Compare providers for flights from Pittsburgh to Ontario

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 Pittsburgh to Ontario in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Pittsburgh-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Pittsburgh-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Pittsburgh-Ontario 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 Pittsburgh-Ontario 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 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, June is the cheapest month in which you can book a flight from Pittsburgh to Ontario (average of $168). Flying from Pittsburgh to Ontario in February is currently the most expensive (average of $276). 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 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 January 28, 2026.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines 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.
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

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
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

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
9,206 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

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
11,198 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

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 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 airports do I use to fly from Pittsburgh to Ontario?

    Ontario is the airport most travelers will use when flying to Ontario from Pittsburgh. Booking flights from Pittsburgh (PIT) to Ontario (ONT) should be relatively easy as there is 1 daily flight to Ontario from 3 different airlines. 6h 50m is how long a flight from Pittsburgh to Ontario will take if you book a nonstop flight.

  • How long is the flight from Pittsburgh to Ontario?

    For as low as $277, United Airlines can have you in Ontario from Pittsburgh in 6h 50m. The distance between Pittsburgh and Ontario 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 Pittsburgh to Ontario round-trip?

    Cheapflights users have booked flights from Pittsburgh to Ontario round-trip from $296. Other airlines that can offer you cheap pricing are Southwest, from $303, and American Airlines, from $306. United Airlines is currently priced 31% 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 American Airlines ($93), Southwest ($166), and United Airlines ($175).

  • 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, June is the cheapest month in which you can book a flight from Pittsburgh to Ontario (average of $168). Flying from Pittsburgh to Ontario in February is currently the most expensive (average of $276). 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

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Alternative routes for Pittsburgh to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$296Average$448FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$303Average$416FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$306Average$402FlexibilityNo cancel feeOn-time71%

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