$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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — ONT
Sep 20 — Sep 271
Round-trip
1 adult, Economy
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Find cheap flights from Newark to Ontario with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Newark to Ontario
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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 21, 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 21, 2026.
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier 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 8/16![Frontier logo]()
$208
This Mytrip deal was found by Cheapflights users on 8/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Fri 9/257:46 pm -
1 stop13h 49m
Deal found 8/16![Frontier logo]()
$215
This HOPEGOO deal was found by Cheapflights users on 8/16. 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 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
Sun 10/47:46 pm -
1 stop13h 49m
Deal found 8/16![Frontier logo]()
$218
This Justfly.com deal was found by Cheapflights users on 8/20. 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 Justfly.com 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 8/20![Frontier logo]()
$237
This Frontier deal was found by Cheapflights users on 8/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:30 pm -
1 stop8h 09m
Thu 10/158:03 pm -
1 stop13h 47m
Deal found 8/20![Frontier logo]()
$248
This Booking.com deal was found by Cheapflights users on 8/19. 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 Booking.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
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 8/19![Frontier logo]()
$272
This HOPEGOO deal was found by Cheapflights users on 8/16. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Sun 9/277:46 pm -
1 stop13h 49m
Deal found 8/16![Frontier logo]()
$277
This Trip.com deal was found by Cheapflights users on 8/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:45 pm -
1 stop8h 23m
Sun 10/258:03 pm -
1 stop13h 47m
Deal found 8/20![Frontier logo]()
$288
This Mytrip deal was found by Cheapflights users on 8/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Fri 9/2510:47 am -
1 stop9h 42m
Deal found 8/19![Multiple Airlines logo]()
$294
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 21, 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 21, 2026.
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/176:55 pm -
1 stop7h 53m
Wed 2/37:00 am -
1 stop7h 40m
Deal found 8/20![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 8/16. 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.
Wed 9/27:25 am -
1 stop9h 44m
Mon 9/1410:47 am -
1 stop9h 42m
Deal found 8/16![Alaska Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Sat 9/121:55 pm -
1 stop11h 04m
Fri 9/187:13 pm -
1 stop8h 33m
Deal found 8/18![United Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 8/19. 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.
Sat 9/196:00 am -
1 stop8h 05m
Sat 9/267:05 am -
1 stop8h 34m
Deal found 8/19![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:15 am -
1 stop7h 59m
Tue 9/2912:17 pm -
1 stop8h 40m
Deal found 8/20![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 8/19. 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.
Sat 1/304:48 pm -
2 stops27h 34m
Wed 2/34:16 pm -
1 stop11h 37m
Deal found 8/19![Alaska Airlines logo]()
$451
This Delta deal was found by Cheapflights users on 8/16. 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.
Thu 9/107:15 am -
1 stop7h 59m
Sat 9/196:00 am -
1 stop8h 49m
Deal found 8/16![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Sun 1/246:00 am -
1 stop9h 33m
Sat 2/61:00 pm -
1 stop8h 45m
Deal found 8/18![United Airlines logo]()
$489
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 11/257:17 am -
1 stop10h 48m
Wed 12/24:00 pm -
1 stop11h 04m
Deal found 8/20![Alaska Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/306:55 pm -
1 stop7h 53m
Sun 2/77:00 am -
1 stop7h 40m
Deal found 8/18![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:41 pm -
1 stop9h 18m
Sun 1/104:16 pm -
1 stop11h 37m
Deal found 8/17![Alaska Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 8/16. 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.
Fri 9/41:23 pm -
1 stop8h 07m
Tue 6/812:00 pm -
1 stop7h 58m
Deal found 8/16![Delta logo]()
$419
Last-minute flights from Newark to OntarioDiscover last-minute flight deals from Newark to Ontario. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Newark to Ontario. Data last updated August 21, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:20 am -
1 stop9h 56m
Mon 9/217:46 pm -
1 stop13h 49m
Deal found 8/18![Multiple Airlines logo]()
$299
This Booking.com deal was found by Cheapflights users on 8/19. 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 Booking.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
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 8/19![Frontier logo]()
$272
This Expedia deal was found by Cheapflights users on 8/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:20 am -
1 stop9h 56m
Mon 10/57:46 pm -
1 stop13h 49m
Deal found 8/18![Multiple Airlines logo]()
$309
This Frontier deal was found by Cheapflights users on 8/18. 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 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
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 8/18![Frontier logo]()
$296
This HOPEGOO deal was found by Cheapflights users on 8/18. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:30 pm -
1 stop8h 09m
Mon 9/217:46 pm -
1 stop13h 49m
Deal found 8/18![Frontier logo]()
$308
This Expedia deal was found by Cheapflights users on 8/16. 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 Expedia 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 9/217:46 pm -
1 stop13h 49m
Deal found 8/16![Frontier logo]()
$208
This Mytrip deal was found by Cheapflights users on 8/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Fri 9/257:46 pm -
1 stop13h 49m
Deal found 8/16![Frontier logo]()
$215
This Frontier deal was found by Cheapflights users on 8/18. 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 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
Wed 9/237:11 pm -
1 stop14h 24m
Deal found 8/18![Frontier logo]()
$266
This Mytrip deal was found by Cheapflights users on 8/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Fri 9/2510:47 am -
1 stop9h 42m
Deal found 8/19![Multiple Airlines logo]()
$294
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:02 pm -
1 stop19h 49m
Mon 10/57:46 pm -
1 stop13h 49m
Deal found 8/17![Multiple Airlines logo]()
$305
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 21, 2026.
Search for one-way flight options from Newark to Ontario. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Super.com deal was found by Cheapflights users on 8/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:30 pm -
1 stop8h 09m
Deal found 8/18![Frontier logo]()
$102
This Super.com deal was found by Cheapflights users on 8/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:30 pm -
1 stop8h 09m
Deal found 8/17![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 8/17. 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 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 8/17![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:45 pm -
1 stop8h 23m
Deal found 8/21![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Wed 9/301:30 pm -
2 stops37h 17m
Deal found 8/16![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/61:30 pm -
2 stops37h 17m
Deal found 8/16![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:30 pm -
2 stops24h 00m
Deal found 8/17![Frontier logo]()
$128
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 21, 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 | $455 |
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 7,457,451 searches. Data last updated August 21, 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
Sun 1/17
6:55 pm-11:48 pm
1 stop7h 53m
Ontario
Wed 2/3
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
Sat 9/26
7:05 am-6:39 pm
1 stop8h 34m
$379
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Tue 9/22
7:15 am-12:14 pm
1 stop7h 59m
Ontario
Tue 9/29
12:17 pm-11:57 pm
1 stop8h 40m
$379
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Thu 9/10
7:15 am-12:14 pm
1 stop7h 59m
Ontario
Sat 9/19
6:00 am-5:49 pm
1 stop8h 49m
$379
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 1/30
6:55 pm-11:48 pm
1 stop7h 53m
Ontario
Sun 2/7
7:00 am-5:40 pm
1 stop7h 40m
$409
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Fri 9/4
1:23 pm-6:30 pm
1 stop8h 07m
Ontario
Tue 6/8
12:00 pm-10:58 pm
1 stop7h 58m
$419
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Wed 9/2
7:25 am-2:09 pm
1 stop9h 44m
Ontario
Mon 9/14
10:47 am-11:29 pm
1 stop9h 42m
$429
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Sat 1/30
4:48 pm-5:22 pm
2 stops27h 34m
Ontario
Wed 2/3
4:16 pm-6:53 am
1 stop11h 37m
$451
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Wed 11/25
7:17 am-3:05 pm
1 stop10h 48m
Ontario
Wed 12/2
4:00 pm-6:04 am
1 stop11h 04m
$459
NewarkOntario
EWR Newark - ONT Ontario
EWRONT
Newark
Fri 12/11
5:41 pm-11:59 pm
1 stop9h 18m
Ontario
Sun 1/10
4:16 pm-6:53 am
1 stop11h 37m
$459
Showing 1-10 of 23 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 $352 and $620 in October.The cheapest round-trip price found within the last 5 days was $208 on Frontier (Oct 1-Oct 5).
How often are flights from Newark to Ontario delayed?
About 14% of weekly flights between Newark and Ontario have experienced delays in the past year, with the average delay time being 142 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 21, 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.
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Food
7.2
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
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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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$432 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$419 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$535 | FlexibilityNo cancel fee | On-time69% |