$110+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
May 17 — May 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Cheapest
Best
Last-minute
One-way
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 April 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 April 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:06 pm
ONT
- EWR
2 stops22h 23m
Multiple Airlines
Tue 5/1212:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 4/12. 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.
Wed 5/610:50 am
ONT
- EWR
2 stops20h 51m
Multiple Airlines
Tue 5/1212:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Tue 5/58:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Mon 5/1112:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/58:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Wed 5/610:29 pm
EWR
- ONT
2 stops38h 36m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Mon 5/48:26 am
ONT
- EWR
2 stops37h 52m
Multiple Airlines
Mon 5/1112:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/126:00 am
ONT
- EWR
2 stops25h 41m
Multiple Airlines
Sat 5/1612:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Wed 5/68:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Mon 5/119:16 pm
EWR
- ONT
2 stops39h 49m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/138:30 am
ONT
- EWR
2 stops13h 48m
Multiple Airlines
Sat 5/1612:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Sat 5/95:59 pm
ONT
- EWR
1 stop14h 21m
Multiple Airlines
Tue 5/121:30 pm
EWR
- ONT
2 stops23h 35m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/118:06 pm
ONT
- EWR
2 stops35h 26m
Multiple Airlines
Sat 5/1612:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$251
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 April 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 April 17, 2026.
This Delta deal was found by Cheapflights users on 4/14. 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.
Wed 10/712:00 pm
ONT
- EWR
1 stop7h 58m
Delta
Wed 10/146:55 pm
EWR
- ONT
1 stop7h 53m
Delta
Deal found 4/14![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 4/12. 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.
Sat 9/57:00 am
ONT
- EWR
1 stop8h 00m
United Airlines
Tue 9/82:38 pm
EWR
- ONT
1 stop9h 14m
United Airlines
Deal found 4/12![United Airlines logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:00 pm
ONT
- EWR
1 stop11h 04m
Alaska Airlines
Thu 10/85:41 pm
EWR
- ONT
1 stop9h 18m
Alaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$348
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:39 am
ONT
- EWR
1 stop9h 50m
Alaska Airlines
Thu 5/289:30 am
EWR
- ONT
1 stop12h 17m
Alaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:18 pm
ONT
- EWR
1 stop8h 46m
United Airlines
Tue 6/167:00 am
EWR
- ONT
1 stop8h 12m
United Airlines
Deal found 4/15![United Airlines logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:45 am
ONT
- EWR
1 stop9h 44m
Alaska Airlines
Mon 10/55:41 pm
EWR
- ONT
1 stop9h 18m
Alaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 8/205:05 pm
ONT
- EWR
1 stop10h 03m
Delta
Sat 8/226:55 pm
EWR
- ONT
1 stop7h 49m
Delta
Deal found 4/13![Delta logo]()
$431
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 5/610:39 am
ONT
- EWR
1 stop9h 50m
Alaska Airlines
Mon 5/115:33 pm
EWR
- ONT
1 stop9h 15m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/25:00 am
ONT
- EWR
1 stop9h 31m
United Airlines
Mon 7/67:00 am
EWR
- ONT
1 stop8h 12m
United Airlines
Deal found 4/13![United Airlines logo]()
$458
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
Sun 5/37:00 am
ONT
- EWR
1 stop8h 29m
Alaska Airlines
Fri 5/87:29 am
EWR
- ONT
1 stop10h 03m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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 5/510:39 am
ONT
- EWR
1 stop9h 50m
Alaska Airlines
Tue 7/215:05 pm
EWR
- ONT
1 stop9h 47m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$451
Last-minute flights from Ontario to NewarkDiscover last-minute flight deals from Ontario to Newark. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Newark. Data last updated April 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Mon 5/48:26 am
ONT
- EWR
2 stops37h 52m
Multiple Airlines
Mon 5/1112:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Tue 5/58:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Mon 5/1112:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/58:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Wed 5/610:29 pm
EWR
- ONT
2 stops38h 36m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 4/12. 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.
Wed 5/610:50 am
ONT
- EWR
2 stops20h 51m
Multiple Airlines
Tue 5/1212:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Wed 5/68:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Mon 5/119:16 pm
EWR
- ONT
2 stops39h 49m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:06 pm
ONT
- EWR
2 stops22h 23m
Multiple Airlines
Tue 5/1212:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Sat 5/95:59 pm
ONT
- EWR
1 stop14h 21m
Multiple Airlines
Tue 5/121:30 pm
EWR
- ONT
2 stops23h 35m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/118:06 pm
ONT
- EWR
2 stops35h 26m
Multiple Airlines
Sat 5/1612:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/126:00 am
ONT
- EWR
2 stops25h 41m
Multiple Airlines
Sat 5/1612:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/138:30 am
ONT
- EWR
2 stops13h 48m
Multiple Airlines
Sat 5/1612:25 pm
EWR
- ONT
1 stop22h 10m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$249
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 April 17, 2026.
Search for one-way flight options from Ontario to Newark. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/510:50 am
ONT
- EWR
2 stops22h 42m
Frontier
Deal found 4/14![Frontier logo]()
$110
This Trip.com deal was found by Cheapflights users on 4/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
ONT
- EWR
2 stops25h 41m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/138:30 am
ONT
- EWR
2 stops13h 48m
Frontier
Deal found 4/15![Frontier logo]()
$120
This Trip.com deal was found by Cheapflights users on 4/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/68:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$129
This Trip.com deal was found by Cheapflights users on 4/15. 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.
Sun 5/108:06 pm
ONT
- EWR
1 stop12h 14m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$130
This Frontier deal was found by Cheapflights users on 4/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:47 pm
ONT
- EWR
1 stop14h 43m
Frontier
Deal found 4/13![Frontier logo]()
$131
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 April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $232 (Kiwi.com) |
One-way from | $110 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $568 |
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 April 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
Quickest round-trip
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 10/7
12:00 pm-10:58 pm
1 stop7h 58m
Newark
Wed 10/14
6:55 pm-11:48 pm
1 stop7h 53m
$307
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sat 9/5
7:00 am-6:00 pm
1 stop8h 00m
Newark
Tue 9/8
2:38 pm-8:52 pm
1 stop9h 14m
$333
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 10/6
4:00 pm-6:04 am
1 stop11h 04m
Newark
Thu 10/8
5:41 pm-11:59 pm
1 stop9h 18m
$348
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 5/12
10:39 am-11:29 pm
1 stop9h 50m
Newark
Thu 5/28
9:30 am-6:47 pm
1 stop12h 17m
$389
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Thu 9/24
10:45 am-11:29 pm
1 stop9h 44m
Newark
Mon 10/5
5:41 pm-11:59 pm
1 stop9h 18m
$389
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 5/6
10:39 am-11:29 pm
1 stop9h 50m
Newark
Mon 5/11
5:33 pm-11:48 pm
1 stop9h 15m
$392
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 6/9
1:18 pm-1:04 am
1 stop8h 46m
Newark
Tue 6/16
7:00 am-12:12 pm
1 stop8h 12m
$417
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Sun 5/3
7:00 am-6:29 pm
1 stop8h 29m
Newark
Fri 5/8
7:29 am-2:32 pm
1 stop10h 03m
$418
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Thu 8/20
5:05 pm-6:08 am
1 stop10h 03m
Newark
Sat 8/22
6:55 pm-11:44 pm
1 stop7h 49m
$431
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 5/5
10:39 am-11:29 pm
1 stop9h 50m
Newark
Tue 7/21
5:05 pm-11:52 pm
1 stop9h 47m
$451
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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | 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?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Newark. Price data was last updated on April 10, 2026.
Booking 52 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 $354). 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 April 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.
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Food
7.2
Entertainment
7.8
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
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
East Rutherford
Yonkers
Bethlehem
Secaucus
Mount Laurel
North Bergen
Elizabeth
Irvington
Staten Island
Seaside Heights
Absecon
Parsippany
Edgewater
Carle Place
Tannersville
Carteret
Stamford
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
Complete your trip
Flights by cabin class
Newark flight routes
Other flight options
Other flights from Ontario
Popular flights
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 April 17, 2026.
Ontario and Newark flights
Browse other Ontario and Newark flight options. Last updated on April 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 April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Ontario to Newark
Discover the top 5 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 April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$67 | Average$202 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$257 | Average$337 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$276 | Average$465 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$286 | Average$418 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$307 | Average$431 | FlexibilityNo cancel fee | On-time69% |