$178+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PIT
Aug 22 — Aug 291
Round-trip
1 adult, Economy
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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
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Cheapest flights from Ontario to PittsburghExplore 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 July 23, 2026.
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 July 23, 2026.
This Booking.com deal was found by Cheapflights users on 7/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm
ONT
- PIT
1 stop11h 11m
Alaska Airlines
Tue 9/157:02 am
PIT
- ONT
1 stop10h 14m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$355
This Southwest deal was found by Cheapflights users on 7/21. 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 11/1010:05 am
ONT
- PIT
2 stops7h 30m
Southwest
Thu 11/126:25 pm
PIT
- ONT
1 stop7h 15m
Southwest
Deal found 7/21![Southwest logo]()
$360
This Delta deal was found by Cheapflights users on 7/22. 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 8/1112:00 pm
ONT
- PIT
1 stop9h 36m
Delta
Sat 8/295:39 pm
PIT
- ONT
1 stop7h 44m
Delta
Deal found 7/22![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 7/21. 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 9/145:15 am
ONT
- PIT
2 stops12h 00m
Southwest
Thu 9/172:05 pm
PIT
- ONT
1 stop8h 15m
Southwest
Deal found 7/21![Southwest logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 7/19. 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.
Wed 9/26:02 am
ONT
- PIT
1 stop8h 23m
Alaska Airlines
Wed 9/97:02 am
PIT
- ONT
1 stop10h 14m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 7/18. 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.
Wed 9/912:30 pm
ONT
- PIT
1 stop6h 50m
Southwest
Wed 9/166:30 am
PIT
- ONT
2 stops9h 00m
Southwest
Deal found 7/18![Southwest logo]()
$373
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Sat 8/297:00 am
ONT
- PIT
1 stop7h 13m
United Airlines
Mon 8/315:03 pm
PIT
- ONT
1 stop7h 56m
United Airlines
Deal found 7/17![United Airlines logo]()
$376
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/1310:29 am
ONT
- PIT
1 stop7h 47m
American Airlines
Thu 8/206:00 am
PIT
- ONT
1 stop8h 43m
American Airlines
Deal found 7/21![American Airlines logo]()
$378
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Mon 8/2412:59 pm
ONT
- PIT
1 stop6h 28m
American Airlines
Wed 9/26:09 am
PIT
- ONT
2 stops10h 22m
American Airlines
Deal found 7/21![American Airlines logo]()
$380
This Delta deal was found by Cheapflights users on 7/17. 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 8/1112:00 pm
ONT
- PIT
1 stop9h 36m
Delta
Sat 8/155:39 pm
PIT
- ONT
1 stop7h 44m
Delta
Deal found 7/17![Delta logo]()
$381
This Southwest deal was found by Cheapflights users on 7/21. 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 9/172:00 pm
ONT
- PIT
1 stop6h 10m
Southwest
Tue 9/228:55 am
PIT
- ONT
2 stops8h 30m
Southwest
Deal found 7/21![Southwest logo]()
$383
Best flights from Ontario to PittsburghDiscover carefully curated flight deals from Ontario to Pittsburgh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
Discover carefully curated flight deals from Ontario to Pittsburgh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/19. 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.
Wed 9/26:02 am
ONT
- PIT
1 stop8h 23m
Alaska Airlines
Wed 9/97:02 am
PIT
- ONT
1 stop10h 14m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 7/17. 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 8/1711:55 pm
ONT
- PIT
1 stop8h 25m
Southwest
Mon 8/246:30 pm
PIT
- ONT
1 stop6h 35m
Southwest
Deal found 7/17![Southwest logo]()
$381
This Delta deal was found by Cheapflights users on 7/17. 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.
Mon 8/1012:00 pm
ONT
- PIT
1 stop9h 36m
Delta
Tue 8/185:39 pm
PIT
- ONT
1 stop8h 55m
Delta
Deal found 7/17![Delta logo]()
$381
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Fri 8/286:00 am
ONT
- PIT
2 stops10h 18m
United Airlines
Mon 8/315:03 pm
PIT
- ONT
1 stop7h 56m
United Airlines
Deal found 7/18![United Airlines logo]()
$430
This Southwest deal was found by Cheapflights users on 7/19. 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 9/1711:55 pm
ONT
- PIT
1 stop7h 50m
Southwest
Tue 9/228:55 am
PIT
- ONT
2 stops8h 30m
Southwest
Deal found 7/19![Southwest logo]()
$415
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 9/112:00 pm
ONT
- PIT
1 stop14h 24m
Alaska Airlines
Sun 9/206:28 pm
PIT
- ONT
1 stop19h 48m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 7/18. 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.
Fri 10/1611:15 pm
ONT
- PIT
1 stop8h 22m
Delta
Wed 10/215:35 pm
PIT
- ONT
1 stop9h 11m
Delta
Deal found 7/18![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/271:18 pm
ONT
- PIT
1 stop6h 27m
United Airlines
Thu 9/35:03 pm
PIT
- ONT
1 stop7h 56m
United Airlines
Deal found 7/21![United Airlines logo]()
$461
This Southwest deal was found by Cheapflights users on 7/18. 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.
Fri 8/285:40 am
ONT
- PIT
2 stops9h 10m
Southwest
Mon 8/317:00 am
PIT
- ONT
2 stops8h 00m
Southwest
Deal found 7/18![Southwest logo]()
$439
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Sat 9/51:18 pm
ONT
- PIT
1 stop6h 27m
United Airlines
Sat 9/127:00 am
PIT
- ONT
1 stop8h 12m
United Airlines
Deal found 7/22![United Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 7/20. 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 10/271:13 pm
ONT
- PIT
1 stop6h 34m
United Airlines
Sat 10/315:06 pm
PIT
- ONT
1 stop7h 44m
United Airlines
Deal found 7/20![United Airlines logo]()
$486
Last-minute flights from Ontario to PittsburghDiscover last-minute flight deals from Ontario to Pittsburgh. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Pittsburgh. Data last updated July 23, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/17. 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 8/1011:55 pm
ONT
- PIT
1 stop8h 25m
Southwest
Sat 8/226:50 am
PIT
- ONT
2 stops11h 25m
Southwest
Deal found 7/17![Southwest logo]()
$386
This Delta deal was found by Cheapflights users on 7/22. 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 8/1112:00 pm
ONT
- PIT
1 stop9h 36m
Delta
Sat 8/295:39 pm
PIT
- ONT
1 stop7h 44m
Delta
Deal found 7/22![Delta logo]()
$365
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/1112:33 pm
ONT
- PIT
1 stop7h 15m
American Airlines
Sat 8/297:04 am
PIT
- ONT
1 stop7h 39m
American Airlines
Deal found 7/19![American Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/1310:29 am
ONT
- PIT
1 stop7h 47m
American Airlines
Thu 8/206:00 am
PIT
- ONT
1 stop8h 43m
American Airlines
Deal found 7/21![American Airlines logo]()
$378
This Booking.com deal was found by Cheapflights users on 7/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:26 pm
ONT
- PIT
1 stop8h 50m
Alaska Airlines
Tue 8/256:23 pm
PIT
- ONT
1 stop19h 41m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$410
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/2012:33 pm
ONT
- PIT
1 stop7h 15m
American Airlines
Fri 8/217:04 am
PIT
- ONT
1 stop9h 27m
American Airlines
Deal found 7/21![American Airlines logo]()
$416
This Southwest deal was found by Cheapflights users on 7/21. 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 8/2411:55 pm
ONT
- PIT
1 stop8h 25m
Southwest
Wed 9/26:30 pm
PIT
- ONT
1 stop6h 30m
Southwest
Deal found 7/21![Southwest logo]()
$355
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Mon 8/2412:59 pm
ONT
- PIT
1 stop6h 28m
American Airlines
Wed 9/26:09 am
PIT
- ONT
2 stops10h 22m
American Airlines
Deal found 7/21![American Airlines logo]()
$380
This Southwest deal was found by Cheapflights users on 7/17. 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 8/275:15 am
ONT
- PIT
2 stops12h 00m
Southwest
Sat 8/296:50 am
PIT
- ONT
2 stops11h 25m
Southwest
Deal found 7/17![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Sat 8/297:00 am
ONT
- PIT
1 stop7h 13m
United Airlines
Mon 8/315:03 pm
PIT
- ONT
1 stop7h 56m
United Airlines
Deal found 7/17![United Airlines logo]()
$376
One-way flights from Ontario to PittsburghSearch for one-way flight options from Ontario to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
Search for one-way flight options from Ontario to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This Southwest deal was found by Cheapflights users on 7/20. 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 8/1011:55 pm
ONT
- PIT
1 stop8h 25m
Southwest
Deal found 7/20![Southwest logo]()
$178
This Delta deal was found by Cheapflights users on 7/22. 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.
Mon 8/2412:00 pm
ONT
- PIT
1 stop9h 36m
Delta
Deal found 7/22![Delta logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Tue 9/110:59 am
ONT
- PIT
3 stops53h 10m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$187
This Delta deal was found by Cheapflights users on 7/20. 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 8/127:05 am
ONT
- PIT
1 stop7h 09m
Delta
Deal found 7/20![Delta logo]()
$191
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/1110:29 am
ONT
- PIT
2 stops10h 21m
American Airlines
Deal found 7/20![American Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 8/125:08 pm
ONT
- PIT
3 stops20h 59m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/46:00 am
ONT
- PIT
3 stops28h 22m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/410:17 pm
ONT
- PIT
2 stops40h 58m
Frontier
Deal found 7/22![Frontier logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Thu 8/138:58 am
ONT
- PIT
2 stops32h 36m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$231
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 8/225:00 am
ONT
- PIT
1 stop6h 44m
United Airlines
Deal found 7/21![United Airlines logo]()
$233
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 July 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $355 (Booking.com) |
One-way from | $178 (Southwest) |
Popular in | July |
Cheapest in | February |
Average price | $596 |
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 July 23, 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
Cheapest round-trip
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Wed 9/2
6:02 am-5:25 pm
1 stop8h 23m
Pittsburgh
Wed 9/9
7:02 am-2:16 pm
1 stop10h 14m
$368
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Mon 8/17
11:55 pm-11:20 am
1 stop8h 25m
Pittsburgh
Mon 8/24
6:30 pm-10:05 pm
1 stop6h 35m
$381
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Mon 8/10
12:00 pm-12:36 am
1 stop9h 36m
Pittsburgh
Tue 8/18
5:39 pm-11:34 pm
1 stop8h 55m
$381
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Thu 9/17
11:55 pm-10:45 am
1 stop7h 50m
Pittsburgh
Tue 9/22
8:55 am-2:25 pm
2 stops8h 30m
$415
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Tue 9/1
12:00 pm-5:24 am
1 stop14h 24m
Pittsburgh
Sun 9/20
6:28 pm-11:16 am
1 stop19h 48m
$416
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Fri 10/16
11:15 pm-10:37 am
1 stop8h 22m
Pittsburgh
Wed 10/21
5:35 pm-11:46 pm
1 stop9h 11m
$429
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Fri 8/28
6:00 am-7:18 pm
2 stops10h 18m
Pittsburgh
Mon 8/31
5:03 pm-9:59 pm
1 stop7h 56m
$430
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Fri 8/28
5:40 am-5:50 pm
2 stops9h 10m
Pittsburgh
Mon 8/31
7:00 am-12:00 pm
2 stops8h 00m
$439
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Thu 8/27
1:18 pm-10:45 pm
1 stop6h 27m
Pittsburgh
Thu 9/3
5:03 pm-9:59 pm
1 stop7h 56m
$461
OntarioPittsburgh
ONT - PIT
ONTPIT
Ontario
Sat 9/5
1:18 pm-10:45 pm
1 stop6h 27m
Pittsburgh
Sat 9/12
7:00 am-12:12 pm
1 stop8h 12m
$465
Showing 1-10 of 23 resultsSorted by cheapest first
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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
ONT-PIT
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
What is the cheapest month to book a flight from Ontario to Pittsburgh?
Currently, February is the cheapest month in which you can book a flight from Ontario to Pittsburgh (average of $304). Flying from Ontario to Pittsburgh in July is currently the most expensive (average of $596). 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.
How much does it cost to fly round-trip from Ontario to Pittsburgh?
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 July 23, 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.
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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.
Traveling to a place near Pittsburgh?
Book flights to Pittsburgh if you plan to visit one of these locationsMonroeville
Washington
Mars
Chester
Wexford
Belle Vernon
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Alternative routes for Ontario to Pittsburgh
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Complete your trip
Complete your trip to Pittsburgh by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Pittsburgh by cabin class
Find flights from Ontario to Pittsburgh, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Pittsburgh flights
Browse other Ontario and Pittsburgh flight options. Last updated on July 23, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on July 23, 2026.
Other flights to Pittsburgh
Explore flights to Pittsburgh departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 July 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$285 | Average$414 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$449 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$310 | Average$475 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$311 | Average$456 | FlexibilityNo cancel fee | On-time63% |