$144+ Cheap flights from Ontario (ONT) to Newark (EWR)
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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
Aug 14 — Aug 211
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Newark 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 Ontario to Newark
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Cheapest flights from Ontario to NewarkExplore the most affordable flight options available from Ontario to Newark. 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 Ontario to Newark. 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 7/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:07 am
ONT
- EWR
1 stop25h 20m
Frontier
Wed 10/281:30 pm
EWR
- ONT
1 stop20h 42m
Frontier
Deal found 7/14![Frontier logo]()
$315
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.
Thu 8/208:48 am
ONT
- EWR
2 stops24h 43m
Frontier
Tue 8/251:35 pm
EWR
- ONT
1 stop22h 01m
Frontier
Deal found 7/12![Frontier logo]()
$317
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.
Tue 8/189:37 am
ONT
- EWR
1 stop23h 54m
Frontier
Tue 8/251:35 pm
EWR
- ONT
2 stops13h 15m
Frontier
Deal found 7/12![Frontier logo]()
$325
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:07 am
ONT
- EWR
1 stop25h 20m
Frontier
Mon 9/285:55 am
EWR
- ONT
2 stops35h 02m
Frontier
Deal found 7/14![Frontier logo]()
$326
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
ONT
- EWR
2 stops40h 03m
Frontier
Wed 8/191:35 pm
EWR
- ONT
1 stop22h 03m
Frontier
Deal found 7/15![Frontier logo]()
$331
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.
Thu 9/103:47 pm
ONT
- EWR
2 stops39h 40m
Frontier
Wed 9/161:30 pm
EWR
- ONT
1 stop20h 42m
Frontier
Deal found 7/12![Frontier logo]()
$332
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.
Thu 10/12:55 pm
ONT
- EWR
2 stops16h 32m
Frontier
Wed 10/71:30 pm
EWR
- ONT
1 stop20h 42m
Frontier
Deal found 7/13![Frontier logo]()
$344
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:17 am
ONT
- EWR
1 stop25h 14m
Frontier
Sun 8/161:35 pm
EWR
- ONT
2 stops24h 27m
Frontier
Deal found 7/10![Frontier logo]()
$353
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:17 am
ONT
- EWR
1 stop25h 14m
Frontier
Mon 8/3110:29 pm
EWR
- ONT
2 stops23h 32m
Frontier
Deal found 7/10![Frontier logo]()
$358
Best flights from Ontario to NewarkDiscover carefully curated flight deals from Ontario to Newark 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 Ontario to Newark 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 7/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:04 pm
ONT
- EWR
1 stop10h 00m
Delta
Sat 11/72:30 pm
EWR
- ONT
1 stop8h 02m
Delta
Deal found 7/12![Delta logo]()
$369
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:12 am
ONT
- EWR
1 stop13h 17m
Alaska Airlines
Tue 10/136:30 am
EWR
- ONT
2 stops12h 32m
Alaska Airlines
Deal found 7/14![Alaska Airlines logo]()
$431
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.
Tue 9/15:05 pm
ONT
- EWR
1 stop9h 55m
Delta
Fri 9/111:26 pm
EWR
- ONT
1 stop9h 41m
Delta
Deal found 7/14![Delta logo]()
$404
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:12 am
ONT
- EWR
2 stops20h 18m
Alaska Airlines
Tue 10/69:30 am
EWR
- ONT
1 stop11h 33m
Alaska Airlines
Deal found 7/13![Alaska Airlines logo]()
$442
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.
Sat 9/51:06 pm
ONT
- EWR
1 stop7h 38m
Delta
Tue 9/87:15 am
EWR
- ONT
1 stop7h 59m
Delta
Deal found 7/10![Delta logo]()
$444
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:02 am
ONT
- EWR
1 stop9h 27m
Alaska Airlines
Mon 10/197:00 am
EWR
- ONT
1 stop14h 03m
Alaska Airlines
Deal found 7/14![Alaska Airlines logo]()
$479
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:05 pm
ONT
- EWR
1 stop9h 55m
Delta
Thu 8/203:20 pm
EWR
- ONT
1 stop9h 32m
Delta
Deal found 7/10![Delta logo]()
$501
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.
Sun 8/1610:00 pm
ONT
- EWR
1 stop8h 24m
Delta
Thu 8/275:59 pm
EWR
- ONT
1 stop8h 35m
Delta
Deal found 7/11![Delta logo]()
$514
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 10/215:52 pm
ONT
- EWR
2 stops11h 53m
Delta
Wed 10/286:00 am
EWR
- ONT
2 stops14h 12m
Delta
Deal found 7/10![Delta logo]()
$515
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.
Mon 8/1710:00 pm
ONT
- EWR
1 stop8h 24m
Delta
Fri 8/214:29 pm
EWR
- ONT
1 stop8h 23m
Delta
Deal found 7/10![Delta logo]()
$519
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 7/2512:00 pm
ONT
- EWR
1 stop9h 10m
Delta
Sat 8/11:29 pm
EWR
- ONT
1 stop8h 01m
Delta
Deal found 7/11![Delta logo]()
$579
Last-minute flights from Ontario to NewarkDiscover last-minute flight deals from Ontario to Newark. Data last updated July 15, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Newark. Data last updated July 15, 2026 and is based on user searches.
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.
Mon 8/1010:00 pm
ONT
- EWR
1 stop8h 24m
Delta
Wed 8/265:59 pm
EWR
- ONT
1 stop8h 35m
Delta
Deal found 7/14![Delta logo]()
$369
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
ONT
- EWR
2 stops40h 03m
Frontier
Wed 8/191:35 pm
EWR
- ONT
1 stop22h 03m
Frontier
Deal found 7/15![Frontier logo]()
$331
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:17 am
ONT
- EWR
1 stop25h 14m
Frontier
Sun 8/161:35 pm
EWR
- ONT
2 stops24h 27m
Frontier
Deal found 7/10![Frontier logo]()
$353
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.
Mon 8/178:17 am
ONT
- EWR
1 stop25h 14m
Frontier
Sat 8/225:55 am
EWR
- ONT
2 stops12h 59m
Frontier
Deal found 7/13![Frontier logo]()
$378
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.
Tue 8/189:37 am
ONT
- EWR
1 stop23h 54m
Frontier
Tue 8/251:35 pm
EWR
- ONT
2 stops13h 15m
Frontier
Deal found 7/12![Frontier logo]()
$325
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.
Thu 8/208:48 am
ONT
- EWR
2 stops24h 43m
Frontier
Tue 8/251:35 pm
EWR
- ONT
1 stop22h 01m
Frontier
Deal found 7/12![Frontier logo]()
$317
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:59 pm
ONT
- EWR
1 stop8h 00m
American Airlines
Tue 8/257:15 am
EWR
- ONT
1 stop7h 48m
American Airlines
Deal found 7/13![American Airlines logo]()
$370
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:17 am
ONT
- EWR
1 stop25h 14m
Frontier
Mon 8/3110:29 pm
EWR
- ONT
2 stops23h 32m
Frontier
Deal found 7/10![Frontier logo]()
$358
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am
ONT
- EWR
1 stop10h 21m
American Airlines
Sat 9/56:50 am
EWR
- ONT
2 stops14h 25m
American Airlines
Deal found 7/10![American Airlines logo]()
$374
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:59 pm
ONT
- EWR
1 stop8h 00m
American Airlines
Wed 9/26:30 am
EWR
- ONT
1 stop8h 13m
American Airlines
Deal found 7/12![American Airlines logo]()
$371
One-way flights from Ontario to NewarkSearch for one-way flight options from Ontario to Newark. Find affordable one-way fares based on user searches. Data last updated July 15, 2026.
Search for one-way flight options from Ontario to Newark. 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 7/12. 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 10/2011:38 am
ONT
- EWR
2 stops21h 49m
Frontier
Deal found 7/12![Frontier logo]()
$144
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 9/89:37 am
ONT
- EWR
1 stop23h 50m
Frontier
Deal found 7/13![Frontier logo]()
$155
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:17 am
ONT
- EWR
1 stop25h 14m
Frontier
Deal found 7/14![Frontier logo]()
$156
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:37 am
ONT
- EWR
1 stop23h 54m
Frontier
Deal found 7/14![Frontier logo]()
$157
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:48 am
ONT
- EWR
2 stops24h 43m
Frontier
Deal found 7/15![Frontier logo]()
$163
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 9/17:56 pm
ONT
- EWR
2 stops22h 32m
Frontier
Deal found 7/13![Frontier logo]()
$167
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.
Mon 8/3110:49 am
ONT
- EWR
2 stops31h 39m
Frontier
Deal found 7/13![Frontier logo]()
$169
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:52 pm
ONT
- EWR
1 stop9h 06m
Alaska Airlines
Deal found 7/13![Alaska Airlines logo]()
$170
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:49 am
ONT
- EWR
2 stops35h 14m
Frontier
Deal found 7/14![Frontier logo]()
$171
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.
Tue 8/46:00 am
ONT
- EWR
2 stops36h 28m
Frontier
Deal found 7/12![Frontier logo]()
$172
Find flight deals from Ontario to Newark
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Newark (EWR). 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 | $315 (Kiwi.com) |
One-way from | $144 (Kiwi.com) |
Popular in | November |
Cheapest in | October |
Average price | $556 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Newark 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 Ontario to Newark Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Mon 10/26
5:04 pm-6:04 am
1 stop10h 00m
Newark
Sat 11/7
2:30 pm-7:32 pm
1 stop8h 02m
$369
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 9/1
5:05 pm-6:00 am
1 stop9h 55m
Newark
Fri 9/11
1:26 pm-8:07 pm
1 stop9h 41m
$404
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 9/30
7:12 am-11:29 pm
1 stop13h 17m
Newark
Tue 10/13
6:30 am-4:02 pm
2 stops12h 32m
$431
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 9/29
7:12 am-6:30 am
2 stops20h 18m
Newark
Tue 10/6
9:30 am-6:03 pm
1 stop11h 33m
$442
Quickest round-trip
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sat 9/5
1:06 pm-11:44 pm
1 stop7h 38m
Newark
Tue 9/8
7:15 am-12:14 pm
1 stop7h 59m
$444
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 10/14
6:02 am-6:29 pm
1 stop9h 27m
Newark
Mon 10/19
7:00 am-6:03 pm
1 stop14h 03m
$479
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 8/18
5:05 pm-6:00 am
1 stop9h 55m
Newark
Thu 8/20
3:20 pm-9:52 pm
1 stop9h 32m
$501
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sun 8/16
10:00 pm-9:24 am
1 stop8h 24m
Newark
Thu 8/27
5:59 pm-11:34 pm
1 stop8h 35m
$514
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 10/21
5:52 pm-8:45 am
2 stops11h 53m
Newark
Wed 10/28
6:00 am-5:12 pm
2 stops14h 12m
$515
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Mon 8/17
10:00 pm-9:24 am
1 stop8h 24m
Newark
Fri 8/21
4:29 pm-9:52 pm
1 stop8h 23m
$519
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Ontario to Newark
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Newark in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Newark Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Newark Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Newark Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Newark Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Newark Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Newark
Have a flexible travel schedule? Discover the best time to fly to Newark from Ontario with our price prediction graph.
ONT-EWR
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Newark Airport
How far ahead should I book a flight from Ontario to Newark Airport?
Booking 60 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Newark Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Ontario to Newark Airport?
Currently, October is the cheapest month in which you can book a flight from Ontario to Newark Airport (average of $362). Flying from Ontario to Newark Airport in November is currently the most expensive (average of $596). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Ontario to Newark Airport?
Reviews of airlines servicing Newark
Get insights into the airlines that provide service to Newark. 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 Newark. Reviews last updated July 15, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from Ontario to Newark Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Boarding
8.1
Crew
8.5
Comfort
7.8
Food
7.0
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario to Newark. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Newark Airport?
Book flights to Newark Airport if you plan to visit one of these locationsQueens
Bronx
Mahwah
Elizabeth
East Rutherford
Bethlehem
Staten Island
Yonkers
Mount Laurel
Irvington
Secaucus
Tannersville
North Bergen
Seaside Heights
Absecon
Edgewater
Carle Place
Carteret
Fort Lee
Norwalk
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ontario to Newark
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Search flights from Ontario to Newark by cabin class
Find flights from Ontario to Newark, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Newark
Explore flights to Newark departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 15, 2026.
Ontario and Newark flights
Browse other Ontario and Newark flight options. Last updated on July 15, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on July 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Newark
Discover the top 4 airlines that operate flights from Ontario to Newark. 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$227 | Average$511 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$307 | Average$501 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$313 | Average$523 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$332 | Average$488 | FlexibilityNo cancel fee | On-timeN/A |