$125+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
Jun 16 — Jun 231
Round-trip
1 adult, Economy
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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 Mai 17, 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 Mai 17, 2026.
This Delta deal was found by Cheapflights users on 5/12. 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.
Di 9/295:05 pm
ONT
- EWR
1 stop10h 03m
Delta
Di 10/136:55 pm
EWR
- ONT
1 stop7h 53m
Delta
Deal found 5/12![Delta logo]()
$317
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Di 9/298:02 pm
ONT
- EWR
2 stops9h 59m
American Airlines
Di 10/65:28 pm
EWR
- ONT
1 stop8h 38m
American Airlines
Deal found 5/13![American Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 5/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 10/318:00 pm
ONT
- EWR
2 stops11h 30m
American Airlines
Di 11/31:44 pm
EWR
- ONT
2 stops11h 15m
American Airlines
Deal found 5/15![American Airlines logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 10/206:54 pm
ONT
- EWR
1 stop9h 05m
Alaska Airlines
Mi 10/219:30 am
EWR
- ONT
1 stop11h 30m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 5/14. 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.
Di 10/2710:48 am
ONT
- EWR
1 stop22h 39m
Frontier
Sa 10/311:30 pm
EWR
- ONT
2 stops13h 25m
Frontier
Deal found 5/14![Frontier logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 10/206:54 pm
ONT
- EWR
1 stop9h 05m
Alaska Airlines
Do 10/225:05 pm
EWR
- ONT
1 stop9h 48m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 5/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 8/208:01 pm
ONT
- EWR
2 stops11h 01m
American Airlines
Di 8/258:00 am
EWR
- ONT
1 stop8h 31m
American Airlines
Deal found 5/15![American Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Mo 8/1711:59 pm
ONT
- EWR
1 stop8h 32m
American Airlines
Di 8/251:33 pm
EWR
- ONT
2 stops12h 25m
American Airlines
Deal found 5/12![American Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 6/36:30 pm
ONT
- EWR
1 stop8h 08m
United Airlines
Sa 6/62:40 pm
EWR
- ONT
1 stop9h 06m
United Airlines
Deal found 5/11![United Airlines logo]()
$346
This Trip.com deal was found by Cheapflights users on 5/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 9/2410:45 am
ONT
- EWR
1 stop9h 44m
Alaska Airlines
Mi 9/307:20 am
EWR
- ONT
1 stop9h 58m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$350
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 Mai 17, 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 Mai 17, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/16. 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.
Do 8/65:32 pm
ONT
- EWR
1 stop9h 27m
Alaska Airlines
Do 8/206:55 am
EWR
- ONT
1 stop10h 34m
Alaska Airlines
Deal found 5/16![Alaska Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 5/16. 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.
Fr 6/2611:50 am
ONT
- EWR
1 stop7h 39m
Delta
Mi 7/86:00 am
EWR
- ONT
1 stop7h 38m
Delta
Deal found 5/16![Delta logo]()
$437
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 6/31:18 pm
ONT
- EWR
1 stop8h 46m
United Airlines
Sa 6/61:25 pm
EWR
- ONT
1 stop10h 21m
United Airlines
Deal found 5/12![United Airlines logo]()
$458
This KAYAK deal was found by Cheapflights users on 5/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/301:10 pm
ONT
- EWR
1 stop7h 49m
American Airlines
Do 6/45:47 am
EWR
- ONT
1 stop10h 41m
American Airlines
Deal found 5/14![American Airlines logo]()
$460
This Alaska Airlines deal was found by Cheapflights users on 5/16. 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.
Do 7/305:32 pm
ONT
- EWR
1 stop9h 27m
Alaska Airlines
Di 8/115:05 pm
EWR
- ONT
1 stop9h 47m
Alaska Airlines
Deal found 5/16![Alaska Airlines logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 5/16. 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.
Sa 5/306:00 am
ONT
- EWR
1 stop9h 26m
Alaska Airlines
Sa 6/65:08 pm
EWR
- ONT
1 stop9h 48m
Alaska Airlines
Deal found 5/16![Alaska Airlines logo]()
$457
This KAYAK deal was found by Cheapflights users on 5/16. 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.
Mo 6/227:13 pm
ONT
- EWR
1 stop7h 47m
American Airlines
Mi 6/245:47 am
EWR
- ONT
1 stop9h 00m
American Airlines
Deal found 5/16![American Airlines logo]()
$558
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/276:30 pm
ONT
- EWR
1 stop8h 08m
United Airlines
Di 6/26:00 am
EWR
- ONT
1 stop9h 44m
United Airlines
Deal found 5/14![United Airlines logo]()
$577
This Alaska Airlines deal was found by Cheapflights users on 5/16. 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.
Sa 7/115:32 pm
ONT
- EWR
1 stop9h 27m
Alaska Airlines
Mi 7/155:05 pm
EWR
- ONT
1 stop9h 47m
Alaska Airlines
Deal found 5/16![Alaska Airlines logo]()
$477
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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.
Mi 5/274:03 pm
ONT
- EWR
1 stop11h 49m
Alaska Airlines
Di 6/95:08 pm
EWR
- ONT
1 stop9h 48m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$537
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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.
Do 7/95:32 pm
ONT
- EWR
1 stop9h 27m
Alaska Airlines
Fr 7/175:05 pm
EWR
- ONT
2 stops21h 09m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$541
Last-minute flights from Ontario to NewarkDiscover last-minute flight deals from Ontario to Newark. Data last updated Mai 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Newark. Data last updated Mai 17, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/301:18 pm
ONT
- EWR
1 stop8h 46m
United Airlines
Sa 6/136:00 am
EWR
- ONT
1 stop9h 12m
United Airlines
Deal found 5/12![United Airlines logo]()
$377
This CheapOair deal was found by Cheapflights users on 5/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 6/37:41 pm
ONT
- EWR
1 stop18h 15m
Alaska Airlines
Di 6/96:29 pm
EWR
- ONT
1 stop19h 45m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 5/16. 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.
Fr 6/57:13 pm
ONT
- EWR
1 stop7h 47m
American Airlines
Sa 6/67:15 am
EWR
- ONT
1 stop7h 49m
American Airlines
Deal found 5/16![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 5/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 6/710:00 pm
ONT
- EWR
1 stop8h 26m
Delta
Mo 6/157:15 am
EWR
- ONT
1 stop7h 55m
Delta
Deal found 5/15![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 5/14. 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.
So 6/710:00 pm
ONT
- EWR
1 stop8h 26m
Delta
Sa 6/137:15 am
EWR
- ONT
1 stop7h 55m
Delta
Deal found 5/14![Delta logo]()
$338
This American Airlines deal was found by Cheapflights users on 5/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 6/87:13 pm
ONT
- EWR
1 stop7h 47m
American Airlines
Di 6/95:29 pm
EWR
- ONT
1 stop7h 28m
American Airlines
Deal found 5/14![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 5/17. 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.
Di 6/911:59 pm
ONT
- EWR
1 stop8h 32m
American Airlines
Sa 7/45:00 am
EWR
- ONT
2 stops10h 03m
American Airlines
Deal found 5/17![American Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 5/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 6/301:11 pm
ONT
- EWR
1 stop7h 48m
American Airlines
Sa 7/47:30 am
EWR
- ONT
1 stop8h 52m
American Airlines
Deal found 5/14![American Airlines logo]()
$358
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 Mai 17, 2026.
Search for one-way flight options from Ontario to Newark. Find affordable one-way fares based on user searches. Data last updated Mai 17, 2026.
This Frontier deal was found by Cheapflights users on 5/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 7/256:47 pm
ONT
- EWR
1 stop14h 44m
Frontier
Deal found 5/12![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Di 9/296:00 am
ONT
- EWR
2 stops27h 27m
Frontier
Deal found 5/15![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 5/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 7/136:47 pm
ONT
- EWR
1 stop14h 44m
Frontier
Deal found 5/12![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 5/14. 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.
Mi 8/2610:50 am
ONT
- EWR
2 stops31h 39m
Frontier
Deal found 5/14![Frontier logo]()
$138
This CheapOair deal was found by Cheapflights users on 5/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 7/76:47 pm
ONT
- EWR
1 stop14h 44m
Frontier
Deal found 5/12![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Mo 8/243:34 pm
ONT
- EWR
2 stops26h 55m
Frontier
Deal found 5/13![Frontier logo]()
$152
This American Airlines deal was found by Cheapflights users on 5/16. 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.
Sa 9/2611:03 pm
ONT
- EWR
1 stop6h 58m
American Airlines
Deal found 5/16![American Airlines logo]()
$158
This Delta deal was found by Cheapflights users on 5/13. 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.
Di 9/110:59 pm
ONT
- EWR
1 stop7h 38m
Delta
Deal found 5/13![Delta logo]()
$159
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Sa 9/1211:03 pm
ONT
- EWR
1 stop6h 58m
American Airlines
Deal found 5/13![American Airlines logo]()
$160
This CheapOair deal was found by Cheapflights users on 5/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 8/196:47 pm
ONT
- EWR
1 stop14h 43m
Frontier
Deal found 5/14![Frontier logo]()
$161
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Mi 7/87:14 pm
ONT
- EWR
2 stops11h 45m
American Airlines
Deal found 5/13![American Airlines logo]()
$164
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 Mai 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $317 (Delta) |
One-way from | $125 (Frontier) |
Popular in | March |
Cheapest in | August |
Average price | $516 |
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 Mai 17, 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
Do 8/6
5:32 pm-5:59 am
1 stop9h 27m
Newark
Do 8/20
6:55 am-2:29 pm
1 stop10h 34m
$359
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Do 7/30
5:32 pm-5:59 am
1 stop9h 27m
Newark
Di 8/11
5:05 pm-11:52 pm
1 stop9h 47m
$418
Quickest round-trip
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Fr 6/26
11:50 am-10:29 pm
1 stop7h 39m
Newark
Mi 7/8
6:00 am-10:38 am
1 stop7h 38m
$437
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sa 5/30
6:00 am-6:26 pm
1 stop9h 26m
Newark
Sa 6/6
5:08 pm-11:56 pm
1 stop9h 48m
$457
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Mi 6/3
1:18 pm-1:04 am
1 stop8h 46m
Newark
Sa 6/6
1:25 pm-8:46 pm
1 stop10h 21m
$458
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sa 5/30
1:10 pm-11:59 pm
1 stop7h 49m
Newark
Do 6/4
5:47 am-1:28 pm
1 stop10h 41m
$460
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sa 7/11
5:32 pm-5:59 am
1 stop9h 27m
Newark
Mi 7/15
5:05 pm-11:52 pm
1 stop9h 47m
$477
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Mi 5/27
4:03 pm-6:52 am
1 stop11h 49m
Newark
Di 6/9
5:08 pm-11:56 pm
1 stop9h 48m
$537
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Do 7/9
5:32 pm-5:59 am
1 stop9h 27m
Newark
Fr 7/17
5:05 pm-11:14 am
2 stops21h 09m
$541
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Mo 6/22
7:13 pm-6:00 am
1 stop7h 47m
Newark
Mi 6/24
5:47 am-11:47 am
1 stop9h 00m
$558
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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 54 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 $346). Flying from Ontario to Newark Airport in March is currently the most expensive (average of $586). 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 Mai 17, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andJetBlue 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.
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
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
Bethlehem
Yonkers
East Rutherford
Elizabeth
Mount Laurel
North Bergen
Secaucus
Irvington
Staten Island
Seaside Heights
Absecon
Parsippany
Edgewater
Carle Place
Carteret
Tannersville
New Brunswick
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
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Alternative routes for Ontario to Newark
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Newark by adding a car rental and/or hotel reservation to your travel itinerary.
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 Mai 17, 2026.
Ontario and Newark flights
Browse other Ontario and Newark flight options. Last updated on Mai 17, 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 Mai 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Ontario to Newark
Discover the top 6 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 Mai 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$67 | Average$202 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$227 | Average$511 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$257 | Average$337 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$281 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$307 | Average$452 | FlexibilityNo cancel fee | On-time69% |