$107+ Cheap flights from Philadelphia to Ontario (PHL - 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ONT
Aug 14 — Aug 211
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia 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
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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 Philadelphia to Ontario
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Cheapest flights from Philadelphia to OntarioExplore the most affordable flight options available from Philadelphia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 15, 2026.
Explore the most affordable flight options available from Philadelphia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/12. 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.
Sat 9/58:00 am
PHL
- ONT
1 stop10h 54m
Frontier
Thu 9/102:55 pm
ONT
- PHL
1 stop11h 41m
Frontier
Deal found 7/12![Frontier logo]()
$222
This Southwest deal was found by Cheapflights users on 7/10. 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.
Sat 9/58:55 am
PHL
- ONT
1 stop8h 35m
Southwest
Wed 9/911:55 pm
ONT
- PHL
1 stop8h 15m
Southwest
Deal found 7/10![Southwest logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Sat 8/228:00 am
PHL
- ONT
1 stop10h 54m
Frontier
Wed 8/266:00 am
ONT
- PHL
1 stop20h 39m
Frontier
Deal found 7/11![Frontier logo]()
$239
This Expedia deal was found by Cheapflights users on 7/10. 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 8/138:37 pm
PHL
- ONT
1 stop30h 13m
Frontier
Sun 8/1610:49 am
ONT
- PHL
1 stop22h 00m
Frontier
Deal found 7/10![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 7/10. 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 8/1511:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Sat 8/226:00 am
ONT
- PHL
1 stop20h 39m
Frontier
Deal found 7/10![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 7/11. 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 8/312:54 pm
PHL
- ONT
1 stop13h 56m
Frontier
Sat 8/154:09 pm
ONT
- PHL
1 stop10h 51m
Frontier
Deal found 7/11![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 7/10. 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 8/312:54 pm
PHL
- ONT
1 stop13h 56m
Frontier
Thu 8/64:09 pm
ONT
- PHL
1 stop10h 51m
Frontier
Deal found 7/10![Frontier logo]()
$244
This Booking.com deal was found by Cheapflights users on 7/12. 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 8/1111:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Fri 8/148:17 am
ONT
- PHL
1 stop8h 12m
Frontier
Deal found 7/12![Frontier logo]()
$246
This Booking.com deal was found by Cheapflights users on 7/14. 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.
Wed 8/511:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Sat 8/158:17 am
ONT
- PHL
1 stop8h 12m
Frontier
Deal found 7/14![Frontier logo]()
$248
This CheapOair deal was found by Cheapflights users on 7/13. 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.
Wed 8/1211:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Wed 8/193:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Deal found 7/13![Frontier logo]()
$250
This Orbitz deal was found by Cheapflights users on 7/10. 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.
Fri 8/78:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Fri 8/148:17 am
ONT
- PHL
1 stop8h 12m
Frontier
Deal found 7/10![Frontier logo]()
$251
Best flights from Philadelphia to OntarioDiscover carefully curated flight deals from Philadelphia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 15, 2026.
Discover carefully curated flight deals from Philadelphia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 15, 2026.
This Delta deal was found by Cheapflights users on 7/10. 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 11/114:45 pm
PHL
- ONT
1 stop8h 29m
Delta
Wed 11/187:00 am
ONT
- PHL
1 stop7h 15m
Delta
Deal found 7/10![Delta logo]()
$298
This Southwest deal was found by Cheapflights users on 7/13. 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 11/52:30 pm
PHL
- ONT
2 stops10h 40m
Southwest
Mon 11/95:00 am
ONT
- PHL
2 stops8h 35m
Southwest
Deal found 7/13![Southwest logo]()
$366
This United Airlines deal was found by Cheapflights users on 7/11. 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 11/116:00 am
PHL
- ONT
1 stop9h 01m
United Airlines
Mon 11/169:00 am
ONT
- PHL
1 stop8h 26m
United Airlines
Deal found 7/11![United Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 7/13. 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 11/56:00 am
PHL
- ONT
1 stop8h 08m
Delta
Mon 11/910:59 pm
ONT
- PHL
1 stop7h 28m
Delta
Deal found 7/13![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 7/14. 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 10/246:00 am
PHL
- ONT
1 stop8h 08m
Delta
Mon 10/2612:18 pm
ONT
- PHL
1 stop6h 54m
Delta
Deal found 7/14![Delta logo]()
$335
This Southwest deal was found by Cheapflights users on 7/10. 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.
Sat 9/58:05 am
PHL
- ONT
2 stops10h 10m
Southwest
Wed 9/99:40 am
ONT
- PHL
2 stops9h 10m
Southwest
Deal found 7/10![Southwest logo]()
$377
This Delta deal was found by Cheapflights users on 7/14. 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 10/223:40 pm
PHL
- ONT
1 stop9h 21m
Delta
Sun 10/2511:15 pm
ONT
- PHL
1 stop7h 14m
Delta
Deal found 7/14![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 7/10. 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 8/255:01 pm
PHL
- ONT
1 stop8h 34m
United Airlines
Wed 8/269:01 am
ONT
- PHL
2 stops12h 58m
United Airlines
Deal found 7/10![United Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 7/11. 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 10/236:49 pm
PHL
- ONT
1 stop7h 57m
Delta
Tue 10/276:00 am
ONT
- PHL
1 stop8h 39m
Delta
Deal found 7/11![Delta logo]()
$335
This Southwest deal was found by Cheapflights users on 7/14. 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 8/136:20 am
PHL
- ONT
2 stops8h 40m
Southwest
Thu 8/2012:35 pm
ONT
- PHL
2 stops8h 10m
Southwest
Deal found 7/14![Southwest logo]()
$440
This United Airlines deal was found by Cheapflights users on 7/14. 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 10/226:00 am
PHL
- ONT
1 stop9h 18m
United Airlines
Fri 10/236:00 am
ONT
- PHL
1 stop7h 49m
United Airlines
Deal found 7/14![United Airlines logo]()
$440
This Delta deal was found by Cheapflights users on 7/11. 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 8/11:25 pm
PHL
- ONT
1 stop8h 05m
Delta
Tue 8/117:05 am
ONT
- PHL
1 stop9h 53m
Delta
Deal found 7/11![Delta logo]()
$424
Last-minute flights from Philadelphia to OntarioDiscover last-minute flight deals from Philadelphia to Ontario. Data last updated July 15, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Ontario. Data last updated July 15, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/11. 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 8/312:54 pm
PHL
- ONT
1 stop13h 56m
Frontier
Sat 8/154:09 pm
ONT
- PHL
1 stop10h 51m
Frontier
Deal found 7/11![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 7/10. 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 8/312:54 pm
PHL
- ONT
1 stop13h 56m
Frontier
Thu 8/64:09 pm
ONT
- PHL
1 stop10h 51m
Frontier
Deal found 7/10![Frontier logo]()
$244
This Frontier deal was found by Cheapflights users on 7/10. 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 8/312:54 pm
PHL
- ONT
1 stop13h 56m
Frontier
Fri 8/78:17 am
ONT
- PHL
1 stop8h 12m
Frontier
Deal found 7/10![Frontier logo]()
$253
This Booking.com deal was found by Cheapflights users on 7/14. 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.
Wed 8/511:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Sat 8/158:17 am
ONT
- PHL
1 stop8h 12m
Frontier
Deal found 7/14![Frontier logo]()
$248
This CheapOair deal was found by Cheapflights users on 7/10. 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.
Thu 8/68:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Thu 8/1311:47 am
ONT
- PHL
1 stop15h 13m
Frontier
Deal found 7/10![Frontier logo]()
$252
This Orbitz deal was found by Cheapflights users on 7/10. 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.
Fri 8/78:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Fri 8/148:17 am
ONT
- PHL
1 stop8h 12m
Frontier
Deal found 7/10![Frontier logo]()
$251
This Booking.com deal was found by Cheapflights users on 7/12. 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 8/1111:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Wed 8/125:08 pm
ONT
- PHL
1 stop9h 52m
Frontier
Deal found 7/12![Frontier logo]()
$246
This CheapOair deal was found by Cheapflights users on 7/13. 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.
Wed 8/1211:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Wed 8/193:40 pm
ONT
- PHL
1 stop11h 50m
Frontier
Deal found 7/13![Frontier logo]()
$250
This Expedia deal was found by Cheapflights users on 7/10. 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 8/138:37 pm
PHL
- ONT
1 stop30h 13m
Frontier
Sun 8/1610:49 am
ONT
- PHL
1 stop22h 00m
Frontier
Deal found 7/10![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 7/10. 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 8/1511:06 am
PHL
- ONT
1 stop23h 57m
Frontier
Sat 8/226:00 am
ONT
- PHL
1 stop20h 39m
Frontier
Deal found 7/10![Frontier logo]()
$241
This Southwest deal was found by Cheapflights users on 7/10. 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 8/175:25 am
PHL
- ONT
1 stop7h 55m
Southwest
Mon 8/2410:00 am
ONT
- PHL
1 stop9h 00m
Southwest
Deal found 7/10![Southwest logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Sat 8/228:00 am
PHL
- ONT
1 stop10h 54m
Frontier
Wed 8/266:00 am
ONT
- PHL
1 stop20h 39m
Frontier
Deal found 7/11![Frontier logo]()
$239
One-way flights from Philadelphia to OntarioSearch for one-way flight options from Philadelphia to Ontario. Find affordable one-way fares based on user searches. Data last updated July 15, 2026.
Search for one-way flight options from Philadelphia to Ontario. Find affordable one-way fares based on user searches. Data last updated July 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 8/268:37 pm
PHL
- ONT
1 stop30h 13m
Frontier
Deal found 7/11![Frontier logo]()
$107
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Mon 8/316:00 am
PHL
- ONT
1 stop9h 12m
United Airlines
Deal found 7/10![United Airlines logo]()
$113
This Super.com deal was found by Cheapflights users on 7/14. 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.
Sun 8/1611:06 am
PHL
- ONT
1 stop7h 48m
Frontier
Deal found 7/14![Frontier logo]()
$117
This Super.com deal was found by Cheapflights users on 7/14. 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 8/611:06 am
PHL
- ONT
1 stop7h 48m
Frontier
Deal found 7/14![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 7/15. 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 8/1411:06 am
PHL
- ONT
1 stop7h 48m
Frontier
Deal found 7/15![Frontier logo]()
$121
This Southwest deal was found by Cheapflights users on 7/10. 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 8/315:25 am
PHL
- ONT
2 stops9h 00m
Southwest
Deal found 7/10![Southwest logo]()
$123
This Super.com deal was found by Cheapflights users on 7/10. 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 8/228:37 pm
PHL
- ONT
1 stop16h 27m
Frontier
Deal found 7/10![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 9/18:00 am
PHL
- ONT
1 stop10h 54m
Frontier
Deal found 7/13![Frontier logo]()
$125
This Booking.com deal was found by Cheapflights users on 7/10. 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 8/288:00 am
PHL
- ONT
1 stop27h 03m
Frontier
Deal found 7/10![Frontier logo]()
$126
This Frontier deal was found by Cheapflights users on 7/10. 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 8/312:54 pm
PHL
- ONT
1 stop13h 56m
Frontier
Deal found 7/10![Frontier logo]()
$128
Find flight deals from Philadelphia to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) 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 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $222 (Kiwi.com) |
One-way from | $107 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $386 |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia 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 15, 2026.
Use the filters below to find and compare flights from Philadelphia to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Wed 11/11
4:45 pm-10:14 pm
1 stop8h 29m
Ontario
Wed 11/18
7:00 am-5:15 pm
1 stop7h 15m
$298
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Thu 11/5
6:00 am-11:08 am
1 stop8h 08m
Ontario
Mon 11/9
10:59 pm-9:27 am
1 stop7h 28m
$311
Quickest round-trip
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Sat 10/24
6:00 am-11:08 am
1 stop8h 08m
Ontario
Mon 10/26
12:18 pm-10:12 pm
1 stop6h 54m
$335
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Thu 10/22
3:40 pm-10:01 pm
1 stop9h 21m
Ontario
Sun 10/25
11:15 pm-9:29 am
1 stop7h 14m
$335
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Fri 10/23
6:49 pm-11:46 pm
1 stop7h 57m
Ontario
Tue 10/27
6:00 am-5:39 pm
1 stop8h 39m
$335
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Thu 11/5
2:30 pm-10:10 pm
2 stops10h 40m
Ontario
Mon 11/9
5:00 am-4:35 pm
2 stops8h 35m
$366
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Sat 9/5
8:05 am-3:15 pm
2 stops10h 10m
Ontario
Wed 9/9
9:40 am-9:50 pm
2 stops9h 10m
$377
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Wed 11/11
6:00 am-12:01 pm
1 stop9h 01m
Ontario
Mon 11/16
9:00 am-8:26 pm
1 stop8h 26m
$416
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Tue 8/25
5:01 pm-10:35 pm
1 stop8h 34m
Ontario
Wed 8/26
9:01 am-12:59 am
2 stops12h 58m
$422
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Sat 8/1
1:25 pm-6:30 pm
1 stop8h 05m
Ontario
Tue 8/11
7:05 am-7:58 pm
1 stop9h 53m
$424
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Philadelphia 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 Philadelphia to Ontario in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Philadelphia-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-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 Philadelphia-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 Philadelphia to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Philadelphia with our price prediction graph.
PHL-ONT
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 Philadelphia to Ontario
How far ahead should I book a flight from Philadelphia to Ontario?
The best time to book flights from Philadelphia to Ontario is 59 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Philadelphia to Ontario?
Currently, September is the cheapest month in which you can book a flight from Philadelphia to Ontario (average of $358). Flying from Philadelphia to Ontario in March is currently the most expensive (average of $492). 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 Philadelphia to Ontario?
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 15, 2026.
Read through reviews of airlines operating flights from Philadelphia to Ontario, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Philadelphia to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to Ontario by cabin class
Find flights from Philadelphia to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 15, 2026.
Philadelphia and Ontario flights
Browse other Philadelphia and Ontario flight options. Last updated on July 15, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on July 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Philadelphia to Ontario
Discover the top 5 airlines that operate flights from Philadelphia 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 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$198 | Average$373 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$256 | Average$370 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$290 | Average$486 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$305 | Average$459 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$358 | Average$496 | FlexibilityNo cancel fee | On-time63% |