$102+ Cheap flights from Newark (EWR) to Ontario (ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — ONT
Sep 10 — Sep 171
Round-trip
1 adult, Economy
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Cheapest flights from Newark to OntarioExplore the most affordable flight options available from Newark to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
Explore the most affordable flight options available from Newark to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Mon 9/217:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$208
This HOPEGOO deal was found by Cheapflights users on 8/10. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/21:30 pm -
1 stop8h 09m
Mon 10/57:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$218
This KAYAK deal was found by Cheapflights users on 8/7. 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.
Thu 10/11:30 pm -
1 stop8h 09m
Sun 10/47:46 pm -
1 stop13h 49m
Deal found 8/7![Frontier logo]()
$258
This Frontier deal was found by Cheapflights users on 8/6. 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.
Fri 9/111:30 pm -
1 stop8h 09m
Sun 9/137:46 pm -
1 stop13h 49m
Deal found 8/6![Frontier logo]()
$266
This Frontier deal was found by Cheapflights users on 8/8. 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.
Fri 9/251:30 pm -
1 stop8h 09m
Sun 10/47:46 pm -
1 stop13h 49m
Deal found 8/8![Frontier logo]()
$267
This Super.com deal was found by Cheapflights users on 8/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:30 pm -
1 stop8h 09m
Sun 9/277:46 pm -
1 stop13h 49m
Deal found 8/6![Frontier logo]()
$269
This HOPEGOO deal was found by Cheapflights users on 8/10. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:30 pm -
1 stop8h 09m
Fri 10/27:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
2 stops24h 00m
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 8/11![Frontier logo]()
$282
This Expedia deal was found by Cheapflights users on 8/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Wed 9/1610:47 am -
1 stop9h 42m
Deal found 8/11![Multiple Airlines logo]()
$294
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Wed 9/167:11 pm -
1 stop14h 24m
Deal found 8/10![Frontier logo]()
$295
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Mon 9/287:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$296
This Super.com deal was found by Cheapflights users on 8/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/201:30 pm -
1 stop8h 09m
Sun 9/277:46 pm -
1 stop13h 49m
Deal found 8/6![Frontier logo]()
$299
Best flights from Newark to OntarioDiscover carefully curated flight deals from Newark to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
Discover carefully curated flight deals from Newark to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
This Delta deal was found by Cheapflights users on 8/10. 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 9/196:00 am -
1 stop8h 05m
Tue 2/27:00 am -
1 stop7h 40m
Deal found 8/10![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:05 pm -
1 stop9h 49m
Sun 11/15:59 pm -
1 stop8h 59m
Deal found 8/10![Alaska Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/32:38 pm -
1 stop9h 15m
Tue 9/86:00 am -
1 stop10h 30m
Deal found 8/8![United Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 8/10. 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 9/196:00 am -
1 stop8h 05m
Thu 2/47:00 am -
1 stop7h 40m
Deal found 8/10![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 8/7. 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 9/126:00 am -
1 stop8h 05m
Sat 9/1912:17 pm -
1 stop8h 40m
Deal found 8/7![Delta logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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 9/227:20 am -
1 stop9h 56m
Wed 9/2310:47 am -
1 stop9h 42m
Deal found 8/6![Alaska Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/56:00 am -
1 stop9h 12m
Tue 9/86:00 am -
1 stop10h 30m
Deal found 8/8![United Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 8/8. 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 9/184:29 pm -
1 stop8h 55m
Sun 9/2010:00 pm -
1 stop8h 22m
Deal found 8/8![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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 9/197:20 am -
1 stop9h 56m
Tue 9/224:27 pm -
2 stops21h 23m
Deal found 8/6![Alaska Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Wed 9/161:22 pm -
1 stop10h 31m
Sat 9/191:18 pm -
1 stop7h 13m
Deal found 8/8![United Airlines logo]()
$529
This Delta deal was found by Cheapflights users on 8/9. 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 8/224:29 pm -
1 stop8h 54m
Tue 9/112:00 pm -
1 stop9h 10m
Deal found 8/9![Delta logo]()
$469
This Delta deal was found by Cheapflights users on 8/11. 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.
Fri 8/281:23 pm -
1 stop8h 07m
Mon 9/1412:17 pm -
2 stops22h 08m
Deal found 8/11![Delta logo]()
$515
Last-minute flights from Newark to OntarioDiscover last-minute flight deals from Newark to Ontario. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Newark to Ontario. Data last updated August 11, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Mon 9/217:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
2 stops24h 00m
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 8/11![Frontier logo]()
$282
This Expedia deal was found by Cheapflights users on 8/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Wed 9/1610:47 am -
1 stop9h 42m
Deal found 8/11![Multiple Airlines logo]()
$294
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Wed 9/167:11 pm -
1 stop14h 24m
Deal found 8/10![Frontier logo]()
$295
This HOPEGOO deal was found by Cheapflights users on 8/10. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Sun 9/137:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$307
This Priceline deal was found by Cheapflights users on 8/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Thu 9/1710:47 am -
1 stop9h 42m
Deal found 8/8![Multiple Airlines logo]()
$309
This Frontier deal was found by Cheapflights users on 8/6. 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.
Fri 9/111:30 pm -
1 stop8h 09m
Sun 9/137:46 pm -
1 stop13h 49m
Deal found 8/6![Frontier logo]()
$266
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Mon 9/287:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$296
This Frontier deal was found by Cheapflights users on 8/8. 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.
Fri 9/251:30 pm -
1 stop8h 09m
Sun 10/47:46 pm -
1 stop13h 49m
Deal found 8/8![Frontier logo]()
$267
This Super.com deal was found by Cheapflights users on 8/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:30 pm -
1 stop8h 09m
Sun 9/277:46 pm -
1 stop13h 49m
Deal found 8/6![Frontier logo]()
$269
This HOPEGOO deal was found by Cheapflights users on 8/10. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:30 pm -
1 stop8h 09m
Fri 10/27:46 pm -
1 stop13h 49m
Deal found 8/10![Frontier logo]()
$277
One-way flights from Newark to OntarioSearch for one-way flight options from Newark to Ontario. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
Search for one-way flight options from Newark to Ontario. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
This Super.com deal was found by Cheapflights users on 8/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Deal found 8/10![Frontier logo]()
$102
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/21:30 pm -
1 stop8h 09m
Deal found 8/10![Frontier logo]()
$107
This Jetabroad deal was found by Cheapflights users on 8/7. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:30 pm -
1 stop8h 09m
Deal found 8/7![Frontier logo]()
$108
This Trip.com deal was found by Cheapflights users on 8/8. 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 10/271:30 pm -
1 stop23h 23m
Deal found 8/8![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/151:30 pm -
1 stop31h 46m
Deal found 8/7![Frontier logo]()
$157
This HOPEGOO deal was found by Cheapflights users on 8/11. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:30 pm -
1 stop8h 09m
Deal found 8/11![Frontier logo]()
$162
Find flight deals from Newark to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Newark (EWR) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $208 (Frontier) |
One-way from | $102 (Super.com) |
Popular in | June |
Cheapest in | November |
Average price | $427 |
Cheapflights Fare Finder
Customize your flight search to find flights from Newark to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Newark Airport to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 9/19
6:00 am-11:05 am
1 stop8h 05m
Ontario
Tue 2/2
7:00 am-5:40 pm
1 stop7h 40m
$379
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 9/19
6:00 am-11:05 am
1 stop8h 05m
Ontario
Thu 2/4
7:00 am-5:40 pm
1 stop7h 40m
$379
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 9/12
6:00 am-11:05 am
1 stop8h 05m
Ontario
Sat 9/19
12:17 pm-11:57 pm
1 stop8h 40m
$380
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Thu 10/29
5:05 pm-11:54 pm
1 stop9h 49m
Ontario
Sun 11/1
5:59 pm-5:58 am
1 stop8h 59m
$399
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Fri 9/18
4:29 pm-10:24 pm
1 stop8h 55m
Ontario
Sun 9/20
10:00 pm-9:22 am
1 stop8h 22m
$409
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Tue 9/22
7:20 am-2:16 pm
1 stop9h 56m
Ontario
Wed 9/23
10:47 am-11:29 pm
1 stop9h 42m
$454
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 8/22
4:29 pm-10:23 pm
1 stop8h 54m
Ontario
Tue 9/1
12:00 pm-12:10 am
1 stop9h 10m
$469
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Thu 9/3
2:38 pm-8:53 pm
1 stop9h 15m
Ontario
Tue 9/8
6:00 am-7:30 pm
1 stop10h 30m
$489
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 9/5
6:00 am-12:12 pm
1 stop9h 12m
Ontario
Tue 9/8
6:00 am-7:30 pm
1 stop10h 30m
$489
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 9/19
7:20 am-2:16 pm
1 stop9h 56m
Ontario
Tue 9/22
4:27 pm-4:50 pm
2 stops21h 23m
$504
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Newark to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Newark to Ontario in August.
| 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 |
- Most accurate provider: When it comes to deals on Newark Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Newark Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Newark Airport-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Newark Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Newark Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Newark to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Newark with our price prediction graph.
EWR-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Newark Airport to Ontario
Prices
Delays
More
How far ahead should I book a flight from Newark Airport to Ontario?
The best time to book flights from Newark Airport to Ontario is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Newark Airport to Ontario?
Currently, November is the cheapest month in which you can book a flight from Newark Airport to Ontario (average of $351). Flying from Newark Airport to Ontario in June is currently the most expensive (average of $633). 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 Newark Airport to Ontario?
Airfare is below average for this route at the moment.
Newark Airport to Ontario flights typically cost between $403 and $591 in September.The cheapest round-trip price found within the last 5 days was $208 on Frontier (Sep 10-Sep 21).
How often are flights from Newark to Ontario delayed?
About 15% of weekly flights between Newark and Ontario have experienced delays in the past year, with the average delay time being 134 minutes.
What is the most punctual flight time for Newark to Ontario flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What’s the top layover airport for flights from Newark Airport to Ontario?
Share of 1-stop round-trip flights from Newark Airport to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Phoenix (PHX) – chosen by Cheapflights users on 50% of 1-stop itineraries from Newark Airport to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Newark Airport to Ontario?
Average round-trip fare for 1-stop flights from Newark Airport to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Portland (PDX) is the most affordable 1-stop option, with an average round-trip price of $476.
What’s the fastest layover option from Newark Airport to Ontario?
Shortest average travel time for 1-stop one-way flights from Newark Airport to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 8h 01m.
Which airport typically offers the quickest layover for flights from Newark Airport to Ontario?
Average layover duration for 1-stop one-way flights from Newark Airport to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Portland (PDX) offer the fastest connection on this route, with an average layover time of 0h 40m.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated August 11, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Newark Airport to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Entertainment
7.8
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Entertainment
7.8
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Entertainment
7.8
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Related info for your journey
Find useful and relevant information for your journey from Newark to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 11, 2026.
Newark and Ontario flights
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Other flights from Newark
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Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Newark to Ontario
Discover the top 3 airlines that operate flights from Newark to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$432 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$422 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$549 | FlexibilityNo cancel fee | On-time69% |