$100+ Cheap flights from Ontario (ONT) to Pennsylvania
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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHL
Aug 30 — Sep 61
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Pennsylvania 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 Ontario to Pennsylvania
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to PennsylvaniaExplore the most affordable flight options available from Ontario to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.
Explore the most affordable flight options available from Ontario to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.
This Frontier deal was found by Cheapflights users on 7/30. 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.
Thu 8/273:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Thu 9/37:00 am
PHL
- ONT
1 stop12h 22m
Frontier
Deal found 7/30![Frontier logo]()
$212
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sat 8/2911:50 am
ONT
- PHL
1 stop15h 40m
Frontier
Sat 9/58:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Deal found 7/30![Frontier logo]()
$214
This CheapOair deal was found by Cheapflights users on 7/30. 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 8/2410:17 pm
ONT
- PHL
1 stop29h 13m
Frontier
Thu 8/278:37 pm
PHL
- ONT
1 stop30h 13m
Frontier
Deal found 7/30![Frontier logo]()
$222
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
ONT
- PHL
1 stop20h 39m
Frontier
Mon 9/78:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Deal found 7/30![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sun 8/303:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Tue 9/810:15 pm
PHL
- ONT
1 stop13h 54m
Frontier
Deal found 7/30![Frontier logo]()
$231
This Expedia deal was found by Cheapflights users on 7/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:46 pm
ONT
- EWR
1 stop13h 49m
Frontier
Thu 9/241:30 pm
EWR
- ONT
1 stop8h 09m
Frontier
Deal found 7/27![Frontier logo]()
$240
This CheapOair deal was found by Cheapflights users on 7/30. 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.
Tue 8/253:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Sun 8/307:00 am
PHL
- ONT
1 stop28h 03m
Frontier
Deal found 7/30![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 7/30. 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.
Tue 8/253:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Fri 8/288:00 am
PHL
- ONT
1 stop11h 22m
Frontier
Deal found 7/30![Frontier logo]()
$242
This Orbitz deal was found by Cheapflights users on 7/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:15 am
ONT
- PHL
1 stop16h 15m
Frontier
Sat 9/58:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Deal found 7/27![Frontier logo]()
$248
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:46 pm
ONT
- EWR
1 stop13h 49m
Frontier
Fri 9/251:30 pm
EWR
- ONT
1 stop8h 09m
Frontier
Deal found 7/29![Frontier logo]()
$249
This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:46 pm
ONT
- EWR
1 stop13h 49m
Frontier
Sun 9/201:30 pm
EWR
- ONT
1 stop8h 09m
Frontier
Deal found 7/30![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/2010:49 am
ONT
- ABE
1 stop25h 22m
Multiple Airlines
Mon 8/247:00 am
ABE
- ONT
1 stop19h 50m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$268
Best flights from Ontario to PennsylvaniaDiscover carefully curated flight deals from Ontario to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2026.
Discover carefully curated flight deals from Ontario to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2026.
This United Airlines deal was found by Cheapflights users on 7/28. 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 8/281:18 pm
ONT
- LGA
1 stop7h 06m
United Airlines
Sun 9/66:00 am
LGA
- ONT
2 stops9h 50m
United Airlines
Deal found 7/28![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 7/29. 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 8/1812:00 pm
ONT
- LGA
1 stop8h 24m
Delta
Thu 8/273:00 pm
LGA
- ONT
1 stop9h 52m
Delta
Deal found 7/29![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 7/28. 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 8/278:10 am
ONT
- LGA
1 stop11h 45m
Southwest
Sat 9/57:00 am
LGA
- ONT
1 stop10h 30m
Southwest
Deal found 7/28![Southwest logo]()
$328
This Trip.com deal was found by Cheapflights users on 7/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:00 am
ONT
- DCA
1 stop7h 59m
Frontier
Sun 8/167:00 am
DCA
- ONT
1 stop30h 04m
Frontier
Deal found 7/25![Frontier logo]()
$346
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 8/297:05 am
ONT
- ABE
2 stops13h 20m
American Airlines
Fri 9/112:25 pm
ABE
- ONT
2 stops11h 12m
American Airlines
Deal found 7/29![American Airlines logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:14 pm
ONT
- IAD
1 stop11h 26m
Alaska Airlines
Tue 9/227:00 am
IAD
- ONT
1 stop10h 16m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$376
This JetBlue deal was found by Cheapflights users on 7/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:59 pm
ONT
- JFK
Nonstop5h 21m
JetBlue
Wed 8/267:29 pm
JFK
- ONT
Nonstop6h 08m
JetBlue
Deal found 7/30![JetBlue logo]()
$387
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/11:18 pm
ONT
- LGA
1 stop7h 06m
United Airlines
Thu 9/103:25 pm
LGA
- ONT
1 stop10h 34m
United Airlines
Deal found 7/30![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:05 am
ONT
- PHL
1 stop7h 34m
Delta
Sat 9/56:00 am
PHL
- ONT
1 stop7h 42m
Delta
Deal found 7/26![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 7/29. 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 10/510:00 pm
ONT
- PHL
1 stop8h 29m
Delta
Tue 10/137:20 am
PHL
- ONT
1 stop8h 01m
Delta
Deal found 7/29![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 7/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:45 am
ONT
- PHL
2 stops9h 35m
Southwest
Mon 11/235:00 am
PHL
- ONT
1 stop7h 55m
Southwest
Deal found 7/25![Southwest logo]()
$345
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 9/163:14 pm
ONT
- IAD
1 stop11h 26m
Alaska Airlines
Sat 9/267:00 am
IAD
- ONT
1 stop10h 16m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$376
This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 1/217:00 am
ONT
- LGA
1 stop9h 14m
Delta
Mon 1/253:00 pm
LGA
- ONT
1 stop10h 14m
Delta
Deal found 7/30![Delta logo]()
$312
This United Airlines deal was found by Cheapflights users on 7/28. 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 10/31:52 pm
ONT
- IAD
1 stop8h 14m
United Airlines
Sat 10/105:48 pm
IAD
- ONT
1 stop8h 03m
United Airlines
Deal found 7/28![United Airlines logo]()
$351
This JetBlue deal was found by Cheapflights users on 7/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:39 pm
ONT
- JFK
Nonstop5h 21m
JetBlue
Sat 9/265:59 pm
JFK
- ONT
Nonstop5h 58m
JetBlue
Deal found 7/29![JetBlue logo]()
$390
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:40 pm
ONT
- PIT
1 stop8h 00m
Southwest
Mon 10/55:40 am
PIT
- ONT
1 stop7h 15m
Southwest
Deal found 7/27![Southwest logo]()
$355
This Southwest deal was found by Cheapflights users on 7/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:35 pm
ONT
- PHL
2 stops8h 10m
Southwest
Mon 8/316:20 am
PHL
- ONT
2 stops8h 40m
Southwest
Deal found 7/25![Southwest logo]()
$355
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:30 pm
ONT
- JFK
1 stop9h 29m
Alaska Airlines
Mon 10/128:25 pm
JFK
- ONT
1 stop16h 52m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$397
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sat 8/154:09 pm
ONT
- IAD
1 stop13h 11m
Frontier
Sun 8/308:59 am
IAD
- ONT
1 stop10h 23m
Frontier
Deal found 7/30![Frontier logo]()
$445
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:05 am
ONT
- ABE
1 stop7h 18m
Delta
Fri 9/1112:56 pm
ABE
- ONT
1 stop10h 09m
Delta
Deal found 7/26![Delta logo]()
$345
This Southwest deal was found by Cheapflights users on 7/30. 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 9/1511:55 pm
ONT
- DCA
1 stop8h 30m
Southwest
Tue 9/223:50 pm
DCA
- ONT
2 stops9h 15m
Southwest
Deal found 7/30![Southwest logo]()
$356
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/65:00 am
ONT
- LGA
1 stop7h 42m
United Airlines
Mon 1/1111:00 am
LGA
- ONT
1 stop10h 44m
United Airlines
Deal found 7/26![United Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:05 am
ONT
- PIT
1 stop7h 09m
Delta
Thu 9/35:50 am
PIT
- ONT
1 stop7h 52m
Delta
Deal found 7/26![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 7/29. 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 10/151:05 pm
ONT
- PIT
1 stop7h 40m
Southwest
Mon 10/196:05 pm
PIT
- ONT
2 stops8h 40m
Southwest
Deal found 7/29![Southwest logo]()
$360
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/217:00 am
ONT
- MDT
1 stop6h 52m
United Airlines
Sun 8/305:54 pm
MDT
- ONT
1 stop7h 41m
United Airlines
Deal found 7/29![United Airlines logo]()
$399
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:42 pm
ONT
- EWR
2 stops27h 43m
Alaska Airlines
Wed 10/285:43 pm
EWR
- ONT
1 stop19h 34m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$441
This JetBlue deal was found by Cheapflights users on 7/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:13 pm
ONT
- JFK
Nonstop5h 20m
JetBlue
Sat 9/125:59 pm
JFK
- ONT
Nonstop5h 58m
JetBlue
Deal found 7/30![JetBlue logo]()
$489
This Delta deal was found by Cheapflights users on 7/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:00 pm
ONT
- PIT
1 stop8h 05m
Delta
Wed 8/265:50 am
PIT
- ONT
1 stop7h 52m
Delta
Deal found 7/25![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 7/30. 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 9/97:25 am
ONT
- LGA
1 stop12h 35m
Southwest
Sun 9/136:55 am
LGA
- ONT
1 stop10h 15m
Southwest
Deal found 7/30![Southwest logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:02 am
ONT
- EWR
1 stop9h 27m
Alaska Airlines
Tue 11/35:41 pm
EWR
- ONT
1 stop9h 08m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$449
Last-minute flights from Ontario to PennsylvaniaDiscover last-minute flight deals from Ontario to Pennsylvania. Data last updated July 31, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Pennsylvania. Data last updated July 31, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/27. 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.
Sat 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Sat 8/2910:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Deal found 7/27![Frontier logo]()
$290
This Frontier deal was found by Cheapflights users on 7/27. 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.
Sat 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Fri 8/2110:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Deal found 7/27![Frontier logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/2010:49 am
ONT
- ABE
1 stop25h 22m
Multiple Airlines
Mon 8/247:00 am
ABE
- ONT
1 stop19h 50m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$268
This CheapOair deal was found by Cheapflights users on 7/30. 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 8/2410:17 pm
ONT
- PHL
1 stop29h 13m
Frontier
Thu 8/278:37 pm
PHL
- ONT
1 stop30h 13m
Frontier
Deal found 7/30![Frontier logo]()
$222
This CheapOair deal was found by Cheapflights users on 7/30. 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.
Tue 8/253:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Sun 8/307:00 am
PHL
- ONT
1 stop28h 03m
Frontier
Deal found 7/30![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 7/30. 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.
Tue 8/253:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Fri 8/288:00 am
PHL
- ONT
1 stop11h 22m
Frontier
Deal found 7/30![Frontier logo]()
$242
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/256:15 am
ONT
- JFK
1 stop8h 45m
American Airlines
Sat 9/57:15 am
JFK
- ONT
1 stop7h 48m
American Airlines
Deal found 7/29![American Airlines logo]()
$292
This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Thu 9/37:00 am
PHL
- ONT
1 stop12h 22m
Frontier
Deal found 7/30![Frontier logo]()
$212
This Orbitz deal was found by Cheapflights users on 7/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:15 am
ONT
- PHL
1 stop16h 15m
Frontier
Sat 9/58:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Deal found 7/27![Frontier logo]()
$248
This Southwest deal was found by Cheapflights users on 7/29. 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 8/288:10 am
ONT
- LGA
1 stop9h 45m
Southwest
Mon 8/316:30 am
LGA
- ONT
1 stop10h 30m
Southwest
Deal found 7/29![Southwest logo]()
$292
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sat 8/2911:50 am
ONT
- PHL
1 stop15h 40m
Frontier
Sat 9/58:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Deal found 7/30![Frontier logo]()
$214
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sun 8/303:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Tue 9/810:15 pm
PHL
- ONT
1 stop13h 54m
Frontier
Deal found 7/30![Frontier logo]()
$231
One-way flights from Ontario to PennsylvaniaSearch for one-way flight options from Ontario to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
Search for one-way flight options from Ontario to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:46 pm
ONT
- EWR
1 stop13h 49m
Frontier
Deal found 7/30![Frontier logo]()
$100
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:46 pm
ONT
- EWR
1 stop13h 49m
Frontier
Deal found 7/30![Frontier logo]()
$103
This Booking.com deal was found by Cheapflights users on 7/30. 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.
Mon 9/148:11 pm
ONT
- EWR
1 stop13h 24m
Frontier
Deal found 7/30![Frontier logo]()
$105
This Priceline deal was found by Cheapflights users on 7/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Deal found 7/30![Frontier logo]()
$112
This Super.com deal was found by Cheapflights users on 7/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
ONT
- DCA
1 stop7h 59m
Frontier
Deal found 7/30![Frontier logo]()
$114
This Super.com deal was found by Cheapflights users on 7/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 am
ONT
- DCA
1 stop7h 56m
Frontier
Deal found 7/30![Frontier logo]()
$115
This Frontier deal was found by Cheapflights users on 7/29. 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 8/316:00 am
ONT
- DCA
1 stop7h 59m
Frontier
Deal found 7/29![Frontier logo]()
$116
This Trip.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/193:40 pm
ONT
- IAD
1 stop13h 24m
Frontier
Deal found 7/28![Frontier logo]()
$116
This Super.com deal was found by Cheapflights users on 7/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:15 am
ONT
- DCA
1 stop7h 44m
Frontier
Deal found 7/30![Frontier logo]()
$119
This Super.com deal was found by Cheapflights users on 7/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:00 am
ONT
- DCA
1 stop7h 59m
Frontier
Deal found 7/25![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 7/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
ONT
- DCA
1 stop7h 59m
Frontier
Deal found 7/26![Frontier logo]()
$121
This Super.com deal was found by Cheapflights users on 7/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:50 am
ONT
- IAD
1 stop17h 14m
Frontier
Deal found 7/30![Frontier logo]()
$121
Find flight deals from Ontario to Pennsylvania
Keep the following information in mind while searching for Ontario to Pennsylvania flight deals. Data was last updated July 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $212 (Expedia) |
One-way from | $100 (Mytrip) |
Popular in | December |
Cheapest in | September |
Average price | $526 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Pennsylvania 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 31, 2026.
Use the filters below to find and compare flights from Ontario to Pennsylvania that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Fri 8/28
1:18 pm-11:24 pm
1 stop7h 06m
New York LaGuardia
Sun 9/6
6:00 am-12:50 pm
2 stops9h 50m
$292
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 9/1
1:18 pm-11:24 pm
1 stop7h 06m
New York LaGuardia
Thu 9/10
3:25 pm-10:59 pm
1 stop10h 34m
$297
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 8/18
12:00 pm-11:24 pm
1 stop8h 24m
New York LaGuardia
Thu 8/27
3:00 pm-9:52 pm
1 stop9h 52m
$307
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
Sat 8/29
7:05 am-5:39 pm
1 stop7h 34m
Philadelphia
Sat 9/5
6:00 am-10:42 am
1 stop7h 42m
$311
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
Mon 10/5
10:00 pm-9:29 am
1 stop8h 29m
Philadelphia
Tue 10/13
7:20 am-12:21 pm
1 stop8h 01m
$311
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Thu 1/21
7:00 am-7:14 pm
1 stop9h 14m
New York LaGuardia
Mon 1/25
3:00 pm-10:14 pm
1 stop10h 14m
$312
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Thu 8/27
8:10 am-10:55 pm
1 stop11h 45m
New York LaGuardia
Sat 9/5
7:00 am-2:30 pm
1 stop10h 30m
$328
OntarioPhiladelphia
ONT - PHL
ONTPHL
Ontario
Thu 11/19
8:45 am-9:20 pm
2 stops9h 35m
Philadelphia
Mon 11/23
5:00 am-9:55 am
1 stop7h 55m
$345
OntarioAllentown
ONT - ABE
ONTABE
Ontario
Sat 8/29
7:05 am-5:23 pm
1 stop7h 18m
Allentown-Bethlehem
Fri 9/11
12:56 pm-8:05 pm
1 stop10h 09m
$345
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Fri 8/14
6:00 am-4:59 pm
1 stop7h 59m
Washington, D.C. Reagan-National
Sun 8/16
7:00 am-10:04 am
1 stop30h 04m
$346
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Pennsylvania
Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Ontario with our price prediction graph.
ONT-LGA
ONT-DCA
ONT-ABE
ONT-IAD
ONT-JFK
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 Pennsylvania
ONT-USPA
ONT-LGA
ONT-DCA
ONT-ABE
ONT-IAD
What is the cheapest month to book a flight from Ontario to Pennsylvania?
Currently, May is the cheapest month in which you can book a flight from Ontario to Pennsylvania (average of $387). Flying from Ontario to Pennsylvania in December is currently the most expensive (average of $468). 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 Pennsylvania?
Airfare is below average for this route at the moment.
Ontario to Pennsylvania flights typically cost between $347 and $481 in August.The cheapest round-trip price found within the last 5 days was $212 on Frontier (Aug 27-Sep 3).
How far ahead should I book a flight from Ontario to Pennsylvania?
To ensure you get the cheapest price possible for a flight from Ontario to Pennsylvania, you should look to book at least 18 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.
Reviews of airlines servicing Pennsylvania
Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated July 31, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Pennsylvania. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
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 Pennsylvania. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Ontario to Pennsylvania
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Pennsylvania by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Pennsylvania by cabin class
Find flights from Ontario to Pennsylvania, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Pennsylvania flights
Browse other Ontario and Pennsylvania flight options. Last updated on July 31, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Pennsylvania flights
Consider these flights traveling from Ontario to Pennsylvania.
Top 5 airlines flying from Ontario to Pennsylvania
Discover the top 5 airlines that operate flights from Ontario to Pennsylvania. 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 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$155 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$282 | Average$431 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$285 | Average$465 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$310 | Average$456 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$311 | Average$466 | FlexibilityNo cancel fee | On-time63% |