$176+ Cheap flights from Monterey to Ontario (MRY - ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
MRY — ONT
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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Find cheap flights from Monterey to Ontario 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 Monterey to Ontario
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Cheapest flights from Monterey to OntarioExplore the most affordable flight options available from Monterey to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Monterey to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2512:00 pm -
1 stop3h 19m
Sun 12/276:00 am -
1 stop5h 12m
Deal found 10/22![United Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Sun 11/86:00 am -
1 stop4h 55m
Deal found 10/23![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:20 am -
1 stop4h 09m
Mon 11/304:17 pm -
1 stop4h 14m
Deal found 10/23![United Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Mon 11/96:00 am -
1 stop4h 55m
Deal found 10/21![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 am -
1 stop4h 09m
Wed 11/44:17 pm -
1 stop5h 17m
Deal found 10/22![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:19 pm -
1 stop3h 14m
Thu 11/266:00 am -
1 stop4h 55m
Deal found 10/21![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Sat 11/71:29 pm -
1 stop7h 43m
Deal found 10/21![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 am -
1 stop4h 09m
Thu 11/56:00 am -
1 stop4h 55m
Deal found 10/22![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:30 am -
1 stop3h 59m
Sat 10/311:29 pm -
1 stop7h 43m
Deal found 10/20![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:25 pm -
1 stop5h 50m
Mon 11/21:29 pm -
1 stop7h 43m
Deal found 10/23![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:10 am -
1 stop7h 36m
Sat 10/245:00 am -
1 stop8h 11m
Deal found 10/21![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2412:00 pm -
1 stop5h 46m
Sat 12/266:00 am -
1 stop5h 12m
Deal found 10/22![United Airlines logo]()
$494
Best flights from Monterey to OntarioDiscover carefully curated flight deals from Monterey to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Monterey to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Sun 11/86:00 am -
1 stop4h 55m
Deal found 10/23![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Mon 11/96:00 am -
1 stop4h 55m
Deal found 10/21![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/412:17 pm -
1 stop5h 19m
Sun 12/66:40 pm -
1 stop3h 19m
Deal found 10/21![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/266:30 am -
1 stop4h 13m
Sat 12/511:20 am -
1 stop3h 35m
Deal found 10/19![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:20 am -
1 stop5h 19m
Tue 12/811:20 am -
1 stop3h 35m
Deal found 10/23![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/116:30 am -
1 stop3h 08m
Sun 12/1311:20 am -
1 stop3h 35m
Deal found 10/21![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 am -
1 stop4h 09m
Thu 11/56:00 am -
1 stop4h 55m
Deal found 10/22![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:25 pm -
1 stop3h 36m
Sat 10/315:00 am -
1 stop8h 19m
Deal found 10/20![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:20 am -
1 stop7h 10m
Sat 10/311:35 pm -
1 stop3h 43m
Deal found 10/24![United Airlines logo]()
$479
Last-minute flights from Monterey to OntarioDiscover last-minute flight deals from Monterey to Ontario. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Monterey to Ontario. Data last updated October 25, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:10 am -
1 stop7h 36m
Sat 10/245:00 am -
1 stop8h 11m
Deal found 10/21![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:30 am -
1 stop3h 59m
Sat 10/311:29 pm -
1 stop7h 43m
Deal found 10/20![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 am -
1 stop4h 09m
Wed 11/44:17 pm -
1 stop5h 17m
Deal found 10/22![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 am -
1 stop4h 09m
Thu 11/56:00 am -
1 stop4h 55m
Deal found 10/22![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:44 pm -
1 stop8h 07m
Sun 11/16:00 am -
1 stop4h 55m
Deal found 10/23![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Sun 11/86:00 am -
1 stop4h 55m
Deal found 10/23![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Mon 11/96:00 am -
1 stop4h 55m
Deal found 10/21![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:25 pm -
1 stop5h 50m
Sat 11/71:29 pm -
1 stop7h 43m
Deal found 10/21![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:20 am -
1 stop7h 10m
Tue 11/109:25 am -
1 stop3h 34m
Deal found 10/21![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:19 pm -
1 stop3h 14m
Thu 11/266:00 am -
1 stop4h 55m
Deal found 10/21![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Fri 11/2012:19 pm -
1 stop3h 14m
Sun 11/224:17 pm -
1 stop4h 14m
Deal found 10/21![United Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:20 am -
1 stop4h 09m
Mon 11/304:17 pm -
1 stop4h 14m
Deal found 10/23![United Airlines logo]()
$362
One-way flights from Monterey to OntarioSearch for one-way flight options from Monterey to Ontario. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Monterey to Ontario. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:31 pm -
1 stop17h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:41 pm -
1 stop17h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$246
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/288:30 am -
1 stop3h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:30 am -
1 stop5h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:30 am -
1 stop5h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$345
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:20 am -
1 stop4h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1812:00 pm -
1 stop3h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:44 pm -
1 stop8h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$389
This Expedia deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:00 am -
2 stops12h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Alaska Airlines logo]()
$451
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/36:07 pm -
1 stop17h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Alaska Airlines logo]()
$462
Find flight deals from Monterey to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Monterey (MRY) 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 October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $355 (United Airlines) |
One-way from | $176 (Kiwi.com) |
Popular in | April |
Cheapest in | January |
Average price | $359 |
Cheapflights Fare Finder
Customize your flight search to find flights from Monterey 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 October 25, 2026.
Use the filters below to find and compare flights from Monterey to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Fri 11/20
6:30 am-12:29 pm
1 stop5h 59m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
Quickest round-trip
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Fri 12/11
6:30 am-9:38 am
1 stop3h 08m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Thu 12/10
6:30 am-9:38 am
1 stop3h 08m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Wed 11/25
2:25 pm-5:56 pm
1 stop3h 31m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Sat 11/28
8:30 am-12:29 pm
1 stop3h 59m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$299
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Sun 11/8
8:20 am-12:29 pm
1 stop4h 09m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$329
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Mon 11/30
6:30 am-12:29 pm
1 stop5h 59m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$329
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Fri 11/6
2:25 pm-8:15 pm
1 stop5h 50m
Ontario
Sun 11/8
6:00 am-10:55 am
1 stop4h 55m
$359
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Fri 10/30
3:41 pm-11:51 pm
3 stops32h 10m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$365
MontereyOntario
MRY Monterey Regional - ONT Ontario
MRYONT
Monterey Regional
Fri 10/30
8:20 am-12:29 pm
1 stop4h 09m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$369
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Monterey 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 Monterey to Ontario in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Monterey-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Monterey-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Monterey-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Monterey-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 Monterey-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 Monterey to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Monterey with our price prediction graph.
MRY-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.
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 October 25, 2026.
Peruse reviews from past customers who have flown with United Airlines from Monterey to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Crew
8.1
Overall
7.3
Entertainment
7.1
Comfort
7.3
Food
6.7
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Boarding
7.7
Crew
8.1
Overall
7.3
Entertainment
7.1
Comfort
7.3
Food
6.7
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
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Find useful and relevant information for your journey from Monterey 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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Top airline flying from Monterey to Ontario
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$239 | Average$298 | FlexibilityNo cancel fee | On-time69% |