$156+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
Aug 22 — Aug 291
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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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 23, 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 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/19:37 am
ONT
- EWR
1 stop23h 54m
Frontier
Sat 9/51:35 pm
EWR
- ONT
2 stops13h 15m
Frontier
Deal found 7/22![Frontier logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/53:47 pm
ONT
- EWR
2 stops39h 40m
Frontier
Wed 10/141:30 pm
EWR
- ONT
1 stop20h 42m
Frontier
Deal found 7/22![Frontier logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/92:55 pm
ONT
- EWR
2 stops27h 33m
Frontier
Wed 9/161:30 pm
EWR
- ONT
1 stop20h 42m
Frontier
Deal found 7/22![Frontier logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/198:07 am
ONT
- EWR
1 stop25h 20m
Frontier
Sat 10/241:22 pm
EWR
- ONT
2 stops13h 33m
Frontier
Deal found 7/22![Frontier logo]()
$351
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Mon 11/211:59 pm
ONT
- EWR
1 stop8h 47m
American Airlines
Sun 11/87:30 am
EWR
- ONT
1 stop11h 05m
American Airlines
Deal found 7/20![American Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 7/22. 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 9/2210:25 am
ONT
- EWR
1 stop9h 32m
American Airlines
Sat 9/266:30 am
EWR
- ONT
1 stop8h 17m
American Airlines
Deal found 7/22![American Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/138:07 am
ONT
- EWR
1 stop25h 20m
Frontier
Fri 10/161:30 pm
EWR
- ONT
2 stops24h 13m
Frontier
Deal found 7/22![Frontier logo]()
$368
This Delta deal was found by Cheapflights users on 7/19. 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 9/295:15 pm
ONT
- EWR
1 stop9h 45m
Delta
Tue 10/137:00 am
EWR
- ONT
1 stop8h 22m
Delta
Deal found 7/19![Delta logo]()
$369
This CheapTickets deal was found by Cheapflights users on 7/21. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:52 pm
ONT
- EWR
1 stop9h 06m
Alaska Airlines
Wed 11/184:00 pm
EWR
- ONT
1 stop9h 54m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:37 am
ONT
- EWR
1 stop23h 54m
Frontier
Fri 9/181:30 pm
EWR
- ONT
2 stops29h 40m
Frontier
Deal found 7/21![Frontier logo]()
$375
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 23, 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 23, 2026.
This Delta deal was found by Cheapflights users on 7/19. 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 11/1612:00 pm
ONT
- EWR
1 stop7h 58m
Delta
Thu 12/36:00 am
EWR
- ONT
1 stop8h 27m
Delta
Deal found 7/19![Delta logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:29 am
ONT
- EWR
1 stop8h 56m
Alaska Airlines
Wed 10/149:30 am
EWR
- ONT
1 stop11h 30m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:15 am
ONT
- EWR
1 stop10h 28m
United Airlines
Tue 9/12:50 pm
EWR
- ONT
1 stop10h 45m
United Airlines
Deal found 7/18![United Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 7/21. 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 8/1412:00 pm
ONT
- EWR
1 stop9h 58m
Delta
Thu 8/201:23 pm
EWR
- ONT
1 stop8h 07m
Delta
Deal found 7/21![Delta logo]()
$454
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:15 am
ONT
- EWR
1 stop9h 18m
United Airlines
Sat 8/2910:45 am
EWR
- ONT
1 stop10h 27m
United Airlines
Deal found 7/18![United Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:12 am
ONT
- EWR
1 stop13h 17m
Alaska Airlines
Mon 10/55:43 pm
EWR
- ONT
1 stop19h 34m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:00 pm
ONT
- EWR
1 stop9h 58m
Delta
Wed 8/191:23 pm
EWR
- ONT
1 stop9h 30m
Delta
Deal found 7/22![Delta logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:52 pm
ONT
- EWR
1 stop9h 06m
Alaska Airlines
Thu 12/37:17 am
EWR
- ONT
1 stop10h 30m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$489
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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 9/236:02 am
ONT
- EWR
2 stops14h 27m
Alaska Airlines
Sun 9/276:50 am
EWR
- ONT
1 stop13h 28m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$491
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 9/54:32 pm
ONT
- EWR
2 stops20h 30m
Alaska Airlines
Wed 9/96:55 am
EWR
- ONT
1 stop13h 23m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$491
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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 9/224:50 pm
ONT
- EWR
2 stops27h 39m
Alaska Airlines
Sat 9/266:55 am
EWR
- ONT
2 stops12h 15m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$494
Last-minute flights from Ontario to NewarkDiscover last-minute flight deals from Ontario to Newark. Data last updated July 23, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Newark. Data last updated July 23, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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 7/2812:04 pm
ONT
- EWR
1 stop8h 55m
Alaska Airlines
Wed 7/297:25 am
EWR
- ONT
1 stop12h 32m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$551
This KAYAK deal was found by Cheapflights users on 7/20. 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.
Wed 7/2910:25 am
ONT
- EWR
1 stop9h 34m
American Airlines
Fri 7/3112:21 pm
EWR
- ONT
1 stop10h 38m
American Airlines
Deal found 7/20![American Airlines logo]()
$558
This American Airlines deal was found by Cheapflights users on 7/19. 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 7/297:15 pm
ONT
- EWR
1 stop7h 45m
American Airlines
Sat 8/15:51 am
EWR
- ONT
1 stop10h 32m
American Airlines
Deal found 7/19![American Airlines logo]()
$561
This American Airlines deal was found by Cheapflights users on 7/19. 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 7/306:11 am
ONT
- EWR
1 stop8h 09m
American Airlines
Mon 8/35:51 am
EWR
- ONT
1 stop10h 31m
American Airlines
Deal found 7/19![American Airlines logo]()
$543
This American Airlines deal was found by Cheapflights users on 7/18. 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.
Fri 7/3111:59 pm
ONT
- EWR
1 stop8h 32m
American Airlines
Mon 8/1010:49 am
EWR
- ONT
1 stop7h 30m
American Airlines
Deal found 7/18![American Airlines logo]()
$534
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Fri 7/311:11 pm
ONT
- EWR
1 stop7h 48m
American Airlines
Tue 8/118:00 am
EWR
- ONT
2 stops13h 15m
American Airlines
Deal found 7/22![American Airlines logo]()
$548
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:45 am
ONT
- EWR
1 stop9h 45m
United Airlines
Tue 9/16:00 am
EWR
- ONT
1 stop9h 12m
United Airlines
Deal found 7/20![United Airlines logo]()
$569
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:34 am
ONT
- EWR
1 stop7h 46m
American Airlines
Tue 8/117:15 am
EWR
- ONT
1 stop7h 48m
American Airlines
Deal found 7/22![American Airlines logo]()
$540
This CheapOair deal was found by Cheapflights users on 7/20. 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 8/210:54 am
ONT
- EWR
1 stop16h 05m
Alaska Airlines
Mon 8/247:25 am
EWR
- ONT
1 stop9h 44m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$544
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 23, 2026.
Search for one-way flight options from Ontario to Newark. Find affordable one-way fares based on user searches. Data last updated July 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. 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
Deal found 7/22![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/19:37 am
ONT
- EWR
1 stop23h 54m
Frontier
Deal found 7/21![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/187:56 pm
ONT
- EWR
2 stops22h 32m
Frontier
Deal found 7/21![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/119:36 am
ONT
- EWR
2 stops21h 54m
Frontier
Deal found 7/21![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/306:00 am
ONT
- EWR
2 stops25h 27m
Frontier
Deal found 7/22![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/197:56 pm
ONT
- EWR
2 stops26h 07m
Frontier
Deal found 7/22![Frontier logo]()
$173
This SmartFares deal was found by Cheapflights users on 7/21. 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 7/21![Alaska Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/198:07 am
ONT
- EWR
1 stop25h 20m
Frontier
Deal found 7/21![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/178:58 am
ONT
- EWR
2 stops24h 33m
Frontier
Deal found 7/19![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/263:57 pm
ONT
- EWR
2 stops26h 31m
Frontier
Deal found 7/21![Frontier logo]()
$181
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 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $317 (Kiwi.com) |
One-way from | $156 (Kiwi.com) |
Popular in | June |
Cheapest in | August |
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 23, 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
Quickest round-trip
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Mon 11/16
12:00 pm-10:58 pm
1 stop7h 58m
Newark
Thu 12/3
6:00 am-11:27 am
1 stop8h 27m
$394
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Thu 10/8
11:29 am-11:25 pm
1 stop8h 56m
Newark
Wed 10/14
9:30 am-6:00 pm
1 stop11h 30m
$454
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Fri 8/14
12:00 pm-12:58 am
1 stop9h 58m
Newark
Thu 8/20
1:23 pm-6:30 pm
1 stop8h 07m
$454
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 8/25
9:15 am-10:43 pm
1 stop10h 28m
Newark
Tue 9/1
2:50 pm-10:35 pm
1 stop10h 45m
$479
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 8/25
9:15 am-9:33 pm
1 stop9h 18m
Newark
Sat 8/29
10:45 am-6:12 pm
1 stop10h 27m
$479
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Thu 8/13
12:00 pm-12:58 am
1 stop9h 58m
Newark
Wed 8/19
1:23 pm-7:53 pm
1 stop9h 30m
$479
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Thu 10/1
7:12 am-11:29 pm
1 stop13h 17m
Newark
Mon 10/5
5:43 pm-10:17 am
1 stop19h 34m
$489
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Thu 11/19
5:52 pm-5:58 am
1 stop9h 06m
Newark
Thu 12/3
7:17 am-2:47 pm
1 stop10h 30m
$489
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 9/23
6:02 am-11:29 pm
2 stops14h 27m
Newark
Sun 9/27
6:50 am-5:18 pm
1 stop13h 28m
$491
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sat 9/5
4:32 pm-4:02 pm
2 stops20h 30m
Newark
Wed 9/9
6:55 am-5:18 pm
1 stop13h 23m
$491
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, August is the cheapest month in which you can book a flight from Ontario to Newark Airport (average of $372). Flying from Ontario to Newark Airport in June is currently the most expensive (average of $590). 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?
Airfare is below average for this route at the moment.
Ontario to Newark Airport flights typically cost between $408 and $574 in September.The cheapest round-trip price found within the last 5 days was $317 on Frontier (Sep 1-Sep 5).
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 23, 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.
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentVincent,Jun 2024
SEA - EWR
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
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
Edgewater
Carle Place
Absecon
Carteret
Fort Lee
Parsippany
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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 23, 2026.
Ontario and Newark flights
Browse other Ontario and Newark flight options. Last updated on July 23, 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 23, 2026.
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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 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$227 | Average$511 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$307 | Average$502 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$319 | Average$524 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$332 | Average$488 | FlexibilityNo cancel fee | On-timeN/A |