$103+ Cheap flights from Newark (EWR) to Ontario (ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — ONT
Mar 16 — Mar 231
1 adult, Economy
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Find cheap flights from Newark to Ontario with Cheapflights
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Cheapest flights from Newark to OntarioExplore the most affordable flight options available from Newark to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 14, 2026.
Explore the most affordable flight options available from Newark to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/186:10 am
EWR
- ONT
2 stops20h 49m
Multiple Airlines
Mon 3/234:22 pm
ONT
- EWR
1 stop16h 07m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Tue 3/176:59 pm
EWR
- ONT
2 stops29h 04m
Multiple Airlines
Mon 3/234:22 pm
ONT
- EWR
1 stop16h 07m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Fri 3/64:05 pm
EWR
- ONT
1 stop28h 34m
Multiple Airlines
Tue 3/176:15 am
ONT
- EWR
2 stops22h 39m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 5/912:41 pm
EWR
- ONT
1 stop30h 57m
Multiple Airlines
Fri 5/1512:59 am
ONT
- EWR
2 stops14h 37m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Mon 5/116:45 am
EWR
- ONT
2 stops12h 53m
Multiple Airlines
Fri 5/158:26 am
ONT
- EWR
1 stop24h 10m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/186:10 am
EWR
- ONT
2 stops20h 49m
Multiple Airlines
Tue 3/244:00 pm
ONT
- EWR
1 stop23h 54m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Mon 3/166:00 am
EWR
- ONT
2 stops20h 59m
Multiple Airlines
Mon 3/234:22 pm
ONT
- EWR
1 stop16h 07m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:12 pm
EWR
- ONT
1 stop29h 33m
Multiple Airlines
Wed 4/157:29 pm
ONT
- EWR
2 stops15h 31m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 5/212:41 pm
EWR
- ONT
1 stop30h 57m
Multiple Airlines
Sat 5/911:44 am
ONT
- EWR
2 stops14h 46m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Tue 3/176:59 pm
EWR
- ONT
2 stops29h 04m
Multiple Airlines
Wed 3/255:10 pm
ONT
- EWR
1 stop22h 44m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$299
Best flights from Newark to OntarioDiscover carefully curated flight deals from Newark to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 14, 2026.
Discover carefully curated flight deals from Newark to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 14, 2026.
This Delta deal was found by Cheapflights users on 2/11. 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.
Tue 4/76:29 am
EWR
- ONT
1 stop8h 18m
Delta
Wed 4/155:05 pm
ONT
- EWR
1 stop9h 50m
Delta
Deal found 2/11![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 2/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/254:55 pm
EWR
- ONT
1 stop10h 04m
Alaska Airlines
Wed 4/110:33 am
ONT
- EWR
1 stop9h 38m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/65:30 pm
EWR
- ONT
1 stop9h 22m
Alaska Airlines
Wed 3/114:02 pm
ONT
- EWR
1 stop11h 57m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 2/13. 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.
Tue 3/176:30 pm
EWR
- ONT
1 stop8h 21m
Delta
Tue 3/2410:25 pm
ONT
- EWR
1 stop9h 09m
Delta
Deal found 2/13![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:30 pm
EWR
- ONT
1 stop9h 22m
Alaska Airlines
Tue 3/106:14 am
ONT
- EWR
1 stop9h 14m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 2/11. 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 4/255:47 pm
EWR
- ONT
1 stop7h 56m
Delta
Mon 4/2710:15 pm
ONT
- EWR
1 stop8h 14m
Delta
Deal found 2/11![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 2/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:00 pm
EWR
- ONT
1 stop9h 59m
Alaska Airlines
Tue 4/2110:33 am
ONT
- EWR
1 stop9h 38m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 2/10. 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.
Thu 5/146:00 am
EWR
- ONT
1 stop7h 57m
Delta
Fri 5/1511:04 pm
ONT
- EWR
1 stop10h 18m
Delta
Deal found 2/10![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:30 pm
EWR
- ONT
1 stop9h 22m
Alaska Airlines
Wed 3/114:02 pm
ONT
- EWR
1 stop11h 57m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 2/10. 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.
Mon 8/102:30 pm
EWR
- ONT
1 stop10h 26m
Delta
Tue 8/1812:00 pm
ONT
- EWR
1 stop10h 04m
Delta
Deal found 2/10![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 2/10. 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.
Sun 8/91:29 pm
EWR
- ONT
1 stop7h 46m
Delta
Wed 8/1912:00 pm
ONT
- EWR
1 stop8h 05m
Delta
Deal found 2/10![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 2/10. 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 8/1212:05 pm
EWR
- ONT
1 stop8h 56m
Delta
Sun 8/3012:00 pm
ONT
- EWR
1 stop8h 05m
Delta
Deal found 2/10![Delta logo]()
$339
Last-minute flights from Newark to OntarioDiscover last-minute flight deals from Newark to Ontario. Data last updated February 14, 2026 and is based on user searches.
Discover last-minute flight deals from Newark to Ontario. Data last updated February 14, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Thu 3/54:05 pm
EWR
- ONT
2 stops19h 01m
Multiple Airlines
Tue 3/104:00 pm
ONT
- EWR
1 stop22h 54m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Fri 3/64:05 pm
EWR
- ONT
1 stop28h 34m
Multiple Airlines
Tue 3/176:15 am
ONT
- EWR
2 stops22h 39m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Mon 3/166:00 am
EWR
- ONT
2 stops20h 59m
Multiple Airlines
Mon 3/234:22 pm
ONT
- EWR
1 stop16h 07m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Mon 3/164:12 pm
EWR
- ONT
1 stop25h 53m
Multiple Airlines
Tue 3/246:15 am
ONT
- EWR
2 stops15h 48m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Tue 3/176:59 pm
EWR
- ONT
2 stops29h 04m
Multiple Airlines
Mon 3/234:22 pm
ONT
- EWR
1 stop16h 07m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Tue 3/176:59 pm
EWR
- ONT
2 stops29h 04m
Multiple Airlines
Wed 3/255:10 pm
ONT
- EWR
1 stop22h 44m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Tue 3/176:55 am
EWR
- ONT
2 stops20h 04m
Multiple Airlines
Tue 3/244:00 pm
ONT
- EWR
1 stop23h 54m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/186:10 am
EWR
- ONT
2 stops20h 49m
Multiple Airlines
Mon 3/234:22 pm
ONT
- EWR
1 stop16h 07m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/186:10 am
EWR
- ONT
2 stops20h 49m
Multiple Airlines
Tue 3/244:00 pm
ONT
- EWR
1 stop23h 54m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$281
One-way flights from Newark to OntarioSearch for one-way flight options from Newark to Ontario. Find affordable one-way fares based on user searches. Data last updated February 14, 2026.
Search for one-way flight options from Newark to Ontario. Find affordable one-way fares based on user searches. Data last updated February 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:59 am
EWR
- ONT
2 stops18h 35m
Frontier
Deal found 2/10![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:00 pm
EWR
- ONT
2 stops30h 34m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Tue 3/2410:54 pm
EWR
- ONT
2 stops35h 18m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 5/411:30 am
EWR
- ONT
2 stops29h 10m
Frontier
Deal found 2/13![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 5/1110:29 pm
EWR
- ONT
2 stops28h 26m
Frontier
Deal found 2/13![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:50 am
EWR
- ONT
2 stops21h 09m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/711:05 pm
EWR
- ONT
3 stops42h 32m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:05 pm
EWR
- ONT
3 stops25h 29m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$134
This Trip.com deal was found by Cheapflights users on 2/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:59 am
EWR
- ONT
2 stops17h 05m
Frontier
Deal found 2/11![Frontier logo]()
$135
This Trip.com deal was found by Cheapflights users on 2/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:05 pm
EWR
- ONT
1 stop25h 24m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$137
Find flight deals from Newark to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Newark (EWR) 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 February 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $223 (Kiwi.com) |
One-way from | $103 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $404 |
Cheapflights Fare Finder
Customize your flight search to find flights from Newark 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 February 14, 2026.
Use the filters below to find and compare flights from Newark Airport to Ontario that are best for you.
Fly from
Newark
Fly to
Ontario
Route
Depart
Return
Price
NewarkOntario
EWR - ONT
EWRONT
Newark
Tue 4/7
6:29 am-11:47 am
1 stop8h 18m
Ontario
Wed 4/15
5:05 pm-5:55 am
1 stop9h 50m
$329
NewarkOntario
EWR - ONT
EWRONT
Newark
Wed 3/25
4:55 pm-11:59 pm
1 stop10h 04m
Ontario
Wed 4/1
10:33 am-11:11 pm
1 stop9h 38m
$329
NewarkOntario
EWR - ONT
EWRONT
Newark
Fri 3/6
5:30 pm-11:52 pm
1 stop9h 22m
Ontario
Wed 3/11
4:02 pm-6:59 am
1 stop11h 57m
$329
NewarkOntario
EWR - ONT
EWRONT
Newark
Tue 3/17
6:30 pm-11:51 pm
1 stop8h 21m
Ontario
Tue 3/24
10:25 pm-10:34 am
1 stop9h 09m
$329
NewarkOntario
EWR - ONT
EWRONT
Newark
Tue 3/3
5:30 pm-11:52 pm
1 stop9h 22m
Ontario
Tue 3/10
6:14 am-6:28 pm
1 stop9h 14m
$329
NewarkOntario
EWR - ONT
EWRONT
Newark
Wed 4/15
5:00 pm-11:59 pm
1 stop9h 59m
Ontario
Tue 4/21
10:33 am-11:11 pm
1 stop9h 38m
$329
NewarkOntario
EWR - ONT
EWRONT
Newark
Tue 3/10
5:30 pm-11:52 pm
1 stop9h 22m
Ontario
Wed 3/11
4:02 pm-6:59 am
1 stop11h 57m
$329
NewarkOntario
EWR - ONT
EWRONT
Newark
Sat 4/25
5:47 pm-10:43 pm
1 stop7h 56m
Ontario
Mon 4/27
10:15 pm-9:29 am
1 stop8h 14m
$339
NewarkOntario
EWR - ONT
EWRONT
Newark
Thu 5/14
6:00 am-10:57 am
1 stop7h 57m
Ontario
Fri 5/15
11:04 pm-12:22 pm
1 stop10h 18m
$339
NewarkOntario
EWR - ONT
EWRONT
Newark
Mon 8/10
2:30 pm-9:56 pm
1 stop10h 26m
Ontario
Tue 8/18
12:00 pm-1:04 am
1 stop10h 04m
$339
Showing 1-10 of 23 results
Compare providers for flights from Newark 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 Newark to Ontario in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Newark Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Newark Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Newark Airport-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Newark Airport-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 Newark Airport-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 Newark to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Newark with our price prediction graph.
EWR-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 Newark Airport to Ontario
Prices
Delays
How far ahead should I book a flight from Newark Airport to Ontario?
Use this chart to determine the optimal time to book a round-trip flight from Newark to Ontario. Price data was last updated on February 6, 2026.
The best time to book flights from Newark Airport to Ontario is 33 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 Newark Airport to Ontario?
Currently, August is the cheapest month in which you can book a flight from Newark Airport to Ontario (average of $90). Flying from Newark Airport to Ontario in December is currently the most expensive (average of $155). 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 often are flights from Newark to Ontario delayed?
About 16% of weekly flights between Newark and Ontario have experienced delays in the past year, with the average delay time being 136 minutes.
What is the most punctual flight time for Newark to Ontario flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Newark to Ontario flights?
Over the last year, Alaska Airlines have had the lowest number of delays on this route, with just 100% of flights being delayed.
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 February 14, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Newark Airport to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Related info for your journey
Find useful and relevant information for your journey from Newark 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 Newark to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Newark to Ontario by cabin class
Find flights from Newark 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 February 14, 2026.
Newark and Ontario flights
Browse other Newark and Ontario flight options. Last updated on February 14, 2026.
Other flights from Newark
Browse through other flights departing from Newark. Flights are based on user searches made on Cheapflights and were last updated on February 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Newark to Ontario
Discover the top 4 airlines that operate flights from Newark 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 February 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$116 | Average$184 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$275 | Average$372 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$276 | Average$405 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$282 | Average$386 | FlexibilityNo cancel fee | On-time69% |