$80+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ONT
May 30 — Jun 61
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Ontario with Cheapflights
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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 April 30, 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 April 30, 2026.
This Delta deal was found by Cheapflights users on 4/26. 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 5/212:23 pm
PHL
- ONT
1 stop10h 25m
Delta
Sat 5/2310:00 pm
ONT
- PHL
1 stop8h 23m
Delta
Deal found 4/26![Delta logo]()
$263
This Frontier deal was found by Cheapflights users on 4/29. 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.
Wed 7/112:42 pm
PHL
- ONT
1 stop14h 07m
Frontier
Sat 7/116:47 pm
ONT
- PHL
1 stop12h 39m
Frontier
Deal found 4/29![Frontier logo]()
$264
This Super.com deal was found by Cheapflights users on 4/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Thu 5/1410:50 am
ONT
- PHL
1 stop15h 47m
Frontier
Deal found 4/27![Frontier logo]()
$266
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Mon 5/1810:50 am
ONT
- PHL
1 stop15h 47m
Frontier
Deal found 4/29![Frontier logo]()
$267
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/273:10 pm
PHL
- ONT
2 stops10h 41m
United Airlines
Thu 5/286:30 pm
ONT
- PHL
1 stop8h 01m
United Airlines
Deal found 4/29![United Airlines logo]()
$268
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Wed 5/136:00 am
ONT
- PHL
1 stop20h 37m
Frontier
Deal found 4/29![Frontier logo]()
$269
This Frontier deal was found by Cheapflights users on 4/29. 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.
Wed 6/177:00 am
PHL
- ONT
1 stop13h 52m
Frontier
Sat 6/203:34 pm
ONT
- PHL
1 stop11h 53m
Frontier
Deal found 4/29![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:00 am
PHL
- ONT
1 stop13h 52m
Frontier
Tue 6/231:33 pm
ONT
- PHL
1 stop13h 54m
Frontier
Deal found 4/26![Frontier logo]()
$271
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:35 pm
PHL
- ONT
1 stop30h 14m
Frontier
Mon 5/1810:50 am
ONT
- PHL
1 stop15h 47m
Frontier
Deal found 4/29![Frontier logo]()
$273
This Super.com deal was found by Cheapflights users on 4/25. 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.
Thu 4/306:43 am
PHL
- ONT
1 stop16h 42m
Frontier
Mon 5/45:33 pm
ONT
- PHL
1 stop9h 01m
Frontier
Deal found 4/25![Frontier logo]()
$274
This CheapOair deal was found by Cheapflights users on 4/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Thu 5/146:00 am
ONT
- PHL
1 stop20h 37m
Frontier
Deal found 4/25![Frontier logo]()
$276
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:06 am
PHL
- ONT
1 stop11h 45m
Frontier
Sat 6/276:47 pm
ONT
- PHL
1 stop12h 43m
Frontier
Deal found 4/28![Frontier logo]()
$277
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 April 30, 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 April 30, 2026.
This Delta deal was found by Cheapflights users on 4/29. 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.
Thu 5/286:45 pm
PHL
- ONT
1 stop7h 49m
Delta
Sun 5/3110:00 pm
ONT
- PHL
1 stop10h 02m
Delta
Deal found 4/29![Delta logo]()
$306
This Southwest deal was found by Cheapflights users on 4/25. 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.
Fri 7/175:00 am
PHL
- ONT
2 stops9h 20m
Southwest
Wed 7/222:50 pm
ONT
- PHL
1 stop7h 10m
Southwest
Deal found 4/25![Southwest logo]()
$332
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 9/16:00 am
PHL
- ONT
1 stop9h 12m
United Airlines
Wed 9/167:13 pm
ONT
- PHL
1 stop9h 36m
United Airlines
Deal found 4/28![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 4/25. 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.
Wed 7/295:15 am
PHL
- ONT
1 stop8h 23m
Delta
Wed 8/56:01 pm
ONT
- PHL
1 stop8h 52m
Delta
Deal found 4/25![Delta logo]()
$318
This Delta deal was found by Cheapflights users on 4/25. 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.
Sat 8/16:00 am
PHL
- ONT
1 stop7h 38m
Delta
Wed 8/56:01 pm
ONT
- PHL
1 stop8h 52m
Delta
Deal found 4/25![Delta logo]()
$318
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 8/206:00 am
PHL
- ONT
1 stop9h 12m
United Airlines
Mon 8/247:13 pm
ONT
- PHL
1 stop9h 36m
United Airlines
Deal found 4/29![United Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 4/26. 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.
Tue 5/195:15 pm
PHL
- ONT
1 stop7h 33m
Delta
Sun 5/3110:00 pm
ONT
- PHL
1 stop8h 27m
Delta
Deal found 4/26![Delta logo]()
$361
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 7/25:00 pm
PHL
- ONT
1 stop8h 51m
United Airlines
Mon 7/61:50 pm
ONT
- PHL
2 stops12h 41m
United Airlines
Deal found 4/28![United Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:15 pm
PHL
- ONT
1 stop7h 33m
Delta
Wed 6/310:00 pm
ONT
- PHL
1 stop8h 27m
Delta
Deal found 4/27![Delta logo]()
$373
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 7/210:32 am
PHL
- ONT
2 stops15h 19m
United Airlines
Thu 7/96:30 am
ONT
- PHL
2 stops14h 14m
United Airlines
Deal found 4/28![United Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:17 am
PHL
- ONT
1 stop8h 40m
Delta
Mon 5/2510:00 pm
ONT
- PHL
1 stop8h 27m
Delta
Deal found 4/27![Delta logo]()
$381
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am
PHL
- ONT
1 stop9h 12m
United Airlines
Sun 9/206:00 am
ONT
- PHL
1 stop8h 30m
United Airlines
Deal found 4/27![United Airlines logo]()
$461
Last-minute flights from Philadelphia to OntarioDiscover last-minute flight deals from Philadelphia to Ontario. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Ontario. Data last updated April 30, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/27. 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.
Wed 4/298:00 am
PHL
- ONT
1 stop13h 49m
Frontier
Mon 5/45:33 pm
ONT
- PHL
1 stop9h 01m
Frontier
Deal found 4/27![Frontier logo]()
$270
This Super.com deal was found by Cheapflights users on 4/25. 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.
Thu 4/306:43 am
PHL
- ONT
1 stop16h 42m
Frontier
Mon 5/45:33 pm
ONT
- PHL
1 stop9h 01m
Frontier
Deal found 4/25![Frontier logo]()
$274
This Booking.com deal was found by Cheapflights users on 4/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:41 pm
PHL
- ONT
1 stop30h 14m
Frontier
Mon 5/45:33 pm
ONT
- PHL
1 stop9h 01m
Frontier
Deal found 4/25![Frontier logo]()
$278
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:17 pm
PHL
- ONT
1 stop9h 54m
Frontier
Wed 5/136:00 am
ONT
- PHL
1 stop20h 37m
Frontier
Deal found 4/29![Frontier logo]()
$264
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Wed 5/136:00 am
ONT
- PHL
1 stop20h 37m
Frontier
Deal found 4/29![Frontier logo]()
$269
This Super.com deal was found by Cheapflights users on 4/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Thu 5/1410:50 am
ONT
- PHL
1 stop15h 47m
Frontier
Deal found 4/27![Frontier logo]()
$266
This CheapOair deal was found by Cheapflights users on 4/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Thu 5/146:00 am
ONT
- PHL
1 stop20h 37m
Frontier
Deal found 4/25![Frontier logo]()
$276
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Mon 5/1810:50 am
ONT
- PHL
1 stop15h 47m
Frontier
Deal found 4/29![Frontier logo]()
$267
This Booking.com deal was found by Cheapflights users on 4/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Wed 5/206:00 am
ONT
- PHL
1 stop20h 37m
Frontier
Deal found 4/25![Frontier logo]()
$279
This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:35 pm
PHL
- ONT
1 stop30h 14m
Frontier
Mon 5/1810:50 am
ONT
- PHL
1 stop15h 47m
Frontier
Deal found 4/29![Frontier logo]()
$273
This Delta deal was found by Cheapflights users on 4/26. 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 5/212:23 pm
PHL
- ONT
1 stop10h 25m
Delta
Fri 5/2912:07 pm
ONT
- PHL
1 stop9h 50m
Delta
Deal found 4/26![Delta logo]()
$263
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/273:10 pm
PHL
- ONT
2 stops10h 41m
United Airlines
Thu 5/286:30 pm
ONT
- PHL
1 stop8h 01m
United Airlines
Deal found 4/29![United Airlines logo]()
$268
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 April 30, 2026.
Search for one-way flight options from Philadelphia to Ontario. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This Frontier deal was found by Cheapflights users on 4/27. 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.
Tue 5/2610:40 am
PHL
- ONT
1 stop8h 04m
Frontier
Deal found 4/27![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 4/25. 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.
Mon 5/187:00 am
PHL
- ONT
1 stop27h 35m
Frontier
Deal found 4/25![Frontier logo]()
$85
This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:00 am
PHL
- ONT
1 stop27h 08m
Frontier
Deal found 4/28![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:40 am
PHL
- ONT
1 stop8h 04m
Frontier
Deal found 4/29![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 4/25. 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.
Sat 5/98:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Deal found 4/25![Frontier logo]()
$105
This iWofly deal was found by Cheapflights users on 4/27. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Deal found 4/27![Frontier logo]()
$106
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/198:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Deal found 4/29![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1011:06 am
PHL
- ONT
1 stop11h 45m
Frontier
Deal found 4/29![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 4/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2811:06 am
PHL
- ONT
1 stop11h 47m
Frontier
Deal found 4/28![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 4/25. 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.
Sun 5/108:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Deal found 4/25![Frontier logo]()
$114
This Super.com deal was found by Cheapflights users on 4/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:00 am
PHL
- ONT
1 stop27h 35m
Frontier
Deal found 4/29![Frontier logo]()
$115
This Flightnetwork deal was found by Cheapflights users on 4/26. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:35 pm
PHL
- ONT
1 stop16h 30m
Frontier
Deal found 4/26![Frontier logo]()
$116
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 April 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $263 (Delta) |
One-way from | $80 (Frontier) |
Popular in | March |
Cheapest in | September |
Average price | $415 |
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 April 30, 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
Thu 5/28
6:45 pm-11:34 pm
1 stop7h 49m
Ontario
Sun 5/31
10:00 pm-11:02 am
1 stop10h 02m
$306
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Wed 7/29
5:15 am-10:38 am
1 stop8h 23m
Ontario
Wed 8/5
6:01 pm-5:53 am
1 stop8h 52m
$318
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Sat 8/1
6:00 am-10:38 am
1 stop7h 38m
Ontario
Wed 8/5
6:01 pm-5:53 am
1 stop8h 52m
$318
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Fri 7/17
5:00 am-11:20 am
2 stops9h 20m
Ontario
Wed 7/22
2:50 pm-1:00 am
1 stop7h 10m
$332
Quickest round-trip
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Tue 5/19
5:15 pm-9:48 pm
1 stop7h 33m
Ontario
Sun 5/31
10:00 pm-9:27 am
1 stop8h 27m
$361
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Tue 9/1
6:00 am-12:12 pm
1 stop9h 12m
Ontario
Wed 9/16
7:13 pm-7:49 am
1 stop9h 36m
$368
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Tue 5/19
5:15 pm-9:48 pm
1 stop7h 33m
Ontario
Wed 6/3
10:00 pm-9:27 am
1 stop8h 27m
$373
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Fri 5/22
5:17 am-10:57 am
1 stop8h 40m
Ontario
Mon 5/25
10:00 pm-9:27 am
1 stop8h 27m
$381
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Thu 8/20
6:00 am-12:12 pm
1 stop9h 12m
Ontario
Mon 8/24
7:13 pm-7:49 am
1 stop9h 36m
$415
PhiladelphiaOntario
PHL - ONT
PHLONT
Philadelphia
Thu 7/2
5:00 pm-10:51 pm
1 stop8h 51m
Ontario
Mon 7/6
1:50 pm-5:31 am
2 stops12h 41m
$433
Showing 1-10 of 22 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 April.
| 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 72 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 $333). 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 April 30, 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
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 April 30, 2026.
Philadelphia and Ontario flights
Browse other Philadelphia and Ontario flight options. Last updated on April 30, 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 April 30, 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 April 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$155 | Average$338 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$208 | Average$478 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$467 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$305 | Average$514 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$374 | Average$496 | FlexibilityNo cancel fee | On-time63% |