$159+ Cheap flights from LaGuardia, NY (LGA) to Ontario (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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ONT
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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Find cheap flights from LaGuardia 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 LaGuardia to Ontario
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Cheapest flights from LaGuardia to OntarioExplore the most affordable flight options available from LaGuardia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
Explore the most affordable flight options available from LaGuardia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 10/206:00 am -
1 stop8h 06m
Wed 10/2812:16 pm -
1 stop7h 25m
Deal found 9/16![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
1 stop8h 08m
Tue 11/1712:18 pm -
1 stop7h 21m
Deal found 9/17![Delta logo]()
$309
This Mytrip deal was found by Cheapflights users on 9/19. 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.
Sat 10/319:29 am -
2 stops17h 22m
Tue 11/106:25 am -
2 stops11h 21m
Deal found 9/19![Frontier logo]()
$310
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:28 pm -
1 stop10h 21m
Tue 10/206:00 am -
1 stop7h 48m
Deal found 9/16![United Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 9/16. 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 10/112:59 pm -
1 stop8h 08m
Mon 10/510:00 pm -
1 stop8h 38m
Deal found 9/16![Delta logo]()
$312
This Mytrip deal was found by Cheapflights users on 9/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:30 am -
2 stops20h 21m
Wed 11/1111:52 am -
2 stops17h 42m
Deal found 9/20![Frontier logo]()
$321
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/173:29 pm -
1 stop8h 22m
Wed 12/21:40 pm -
1 stop6h 50m
Deal found 9/20![United Airlines logo]()
$322
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:00 am -
1 stop8h 08m
Tue 11/1712:18 pm -
1 stop7h 21m
Deal found 9/17![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 9/18. 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 10/316:00 am -
1 stop8h 06m
Fri 11/612:16 pm -
1 stop7h 25m
Deal found 9/18![Delta logo]()
$326
This Southwest deal was found by Cheapflights users on 9/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:05 am -
1 stop11h 55m
Sat 10/316:20 am -
1 stop11h 10m
Deal found 9/16![Southwest logo]()
$329
Best flights from LaGuardia to OntarioDiscover carefully curated flight deals from LaGuardia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from LaGuardia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/73:20 pm -
1 stop8h 31m
Wed 11/111:29 pm -
1 stop6h 46m
Deal found 9/15![United Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 9/18. 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.
Thu 1/286:00 am -
1 stop8h 27m
Sun 1/3112:00 pm -
1 stop8h 41m
Deal found 9/18![Delta logo]()
$423
This Southwest deal was found by Cheapflights users on 9/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:55 am -
1 stop10h 30m
Tue 10/2010:55 am -
2 stops8h 30m
Deal found 9/20![Southwest logo]()
$473
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Fri 11/62:00 pm -
1 stop10h 40m
Sun 11/85:00 am -
1 stop7h 47m
Deal found 9/19![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 9/19. 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.
Thu 10/16:00 am -
1 stop8h 09m
Fri 10/212:19 pm -
1 stop7h 20m
Deal found 9/19![Delta logo]()
$437
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/610:29 am -
2 stops14h 11m
Wed 1/206:00 am -
2 stops14h 16m
Deal found 9/17![United Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:29 pm -
1 stop8h 22m
Fri 11/66:00 am -
2 stops12h 29m
Deal found 9/17![United Airlines logo]()
$435
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Sat 10/244:22 pm -
1 stop9h 29m
Sat 10/315:00 am -
1 stop7h 47m
Deal found 9/19![United Airlines logo]()
$452
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Sat 11/71:05 pm -
1 stop8h 42m
Mon 11/95:00 am -
1 stop9h 27m
Deal found 9/20![United Airlines logo]()
$457
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Tue 1/52:00 pm -
1 stop10h 40m
Fri 1/85:00 am -
1 stop7h 42m
Deal found 9/18![United Airlines logo]()
$478
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Fri 11/202:00 pm -
1 stop10h 40m
Wed 12/21:40 pm -
1 stop6h 50m
Deal found 9/20![United Airlines logo]()
$483
Last-minute flights from LaGuardia to OntarioDiscover last-minute flight deals from LaGuardia to Ontario. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Ontario. Data last updated September 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/16. 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 10/112:59 pm -
1 stop8h 08m
Mon 10/510:00 pm -
1 stop8h 38m
Deal found 9/16![Delta logo]()
$312
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:28 pm -
1 stop10h 21m
Tue 10/206:00 am -
1 stop7h 48m
Deal found 9/16![United Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 10/206:00 am -
1 stop8h 06m
Wed 10/2812:16 pm -
1 stop7h 25m
Deal found 9/16![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 10/206:00 am -
1 stop8h 06m
Wed 11/1812:18 pm -
1 stop7h 21m
Deal found 9/16![Delta logo]()
$325
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:09 pm -
2 stops9h 44m
Sun 10/2511:59 pm -
1 stop9h 01m
Deal found 9/17![American Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 9/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:05 am -
1 stop11h 55m
Sat 10/316:20 am -
1 stop11h 10m
Deal found 9/16![Southwest logo]()
$329
This Mytrip deal was found by Cheapflights users on 9/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:30 pm -
2 stops20h 05m
Sat 10/3111:52 am -
2 stops18h 42m
Deal found 9/20![Frontier logo]()
$334
This Mytrip deal was found by Cheapflights users on 9/19. 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.
Sat 10/319:29 am -
2 stops17h 22m
Tue 11/106:25 am -
2 stops11h 21m
Deal found 9/19![Frontier logo]()
$310
This Delta deal was found by Cheapflights users on 9/18. 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 10/316:00 am -
1 stop8h 06m
Sat 11/712:16 pm -
1 stop8h 24m
Deal found 9/18![Delta logo]()
$326
This Delta deal was found by Cheapflights users on 9/18. 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 10/316:00 am -
1 stop8h 06m
Fri 11/612:16 pm -
1 stop7h 25m
Deal found 9/18![Delta logo]()
$327
One-way flights from LaGuardia to OntarioSearch for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
Search for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Wed 10/283:29 pm -
1 stop8h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![United Airlines logo]()
$159
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:59 am -
1 stop7h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![American Airlines logo]()
$163
This Delta deal was found by Cheapflights users on 9/18. 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 10/31:59 pm -
1 stop7h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Delta logo]()
$164
This Southwest deal was found by Cheapflights users on 9/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:00 am -
2 stops10h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$166
This Trip.com deal was found by Cheapflights users on 9/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:30 pm -
2 stops20h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$167
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:00 am -
2 stops10h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![American Airlines logo]()
$169
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Sat 10/316:30 am -
2 stops13h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$171
This Mytrip deal was found by Cheapflights users on 9/18. 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.
Sat 11/149:29 am -
2 stops17h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$174
This Southwest deal was found by Cheapflights users on 9/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:40 am -
2 stops13h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Southwest logo]()
$175
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:59 pm -
1 stop8h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![American Airlines logo]()
$176
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:29 pm -
1 stop8h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![United Airlines logo]()
$179
Find flight deals from LaGuardia to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from LaGuardia (LGA) 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 September 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $308 (Delta) |
One-way from | $159 (United Airlines) |
Popular in | December |
Cheapest in | February |
Average price | $560 |
Cheapflights Fare Finder
Customize your flight search to find flights from LaGuardia 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 September 21, 2026.
Use the filters below to find and compare flights from New York LaGuardia Airport to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sun 11/1
8:00 am-2:05 pm
1 stop9h 05m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$164
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Wed 10/28
9:35 am-6:01 pm
2 stops11h 26m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$169
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Wed 10/7
10:10 am-6:00 pm
1 stop10h 50m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$169
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Tue 11/17
8:15 am-6:01 pm
2 stops12h 46m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$189
Quickest round-trip
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Tue 1/5
3:30 pm-8:20 pm
1 stop7h 50m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$225
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 10/24
4:22 pm-10:51 pm
1 stop9h 29m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$226
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Wed 10/14
3:28 pm-10:49 pm
1 stop10h 21m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 10/3
8:10 am-5:46 pm
2 stops12h 36m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$254
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sun 10/25
7:00 am-2:05 pm
1 stop10h 05m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$349
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 11/7
3:20 pm-8:51 pm
1 stop8h 31m
Ontario
Wed 11/11
1:29 pm-11:15 pm
1 stop6h 46m
$358
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from LaGuardia 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 LaGuardia to Ontario in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on New York LaGuardia Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New York LaGuardia Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New York LaGuardia Airport-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on New York LaGuardia 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 New York LaGuardia 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 LaGuardia to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from LaGuardia with our price prediction graph.
LGA-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 New York LaGuardia Airport to Ontario
What is the cheapest month to book a flight from New York LaGuardia Airport to Ontario?
Currently, February is the cheapest month in which you can book a flight from New York LaGuardia Airport to Ontario (average of $279). Flying from New York LaGuardia Airport to Ontario in December is currently the most expensive (average of $658). 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 New York LaGuardia Airport to Ontario?
Airfare is below average for this route at the moment.
New York LaGuardia Airport to Ontario flights typically cost between $494 and $537 in October.The cheapest round-trip price found within the last 5 days was $308 on Delta (Oct 20-Oct 28).
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 September 21, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from New York LaGuardia Airport to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from LaGuardia 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 4 airlines flying from LaGuardia to Ontario
Discover the top 4 airlines that operate flights from LaGuardia 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 September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$427 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$227 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$279 | Average$403 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$306 | Average$519 | FlexibilityNo cancel fee | On-time71% |