$154+ Cheap flights from LaGuardia, NY (LGA) 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ONT
Sep 5 — Sep 121
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
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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 August 6, 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 August 6, 2026.
This HOPEGOO deal was found by Cheapflights users on 8/1. 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.
Tue 9/110:55 pm -
1 stop12h 41m
Tue 9/89:37 am -
1 stop9h 23m
Deal found 8/1![Frontier logo]()
$281
This FlightHub deal was found by Cheapflights users on 8/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:55 pm -
1 stop12h 43m
Sun 9/68:17 am -
1 stop10h 43m
Deal found 8/2![Frontier logo]()
$283
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/54:16 pm -
1 stop9h 19m
Sat 9/127:00 am -
1 stop7h 25m
Deal found 8/3![United Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:55 pm -
1 stop12h 43m
Sat 9/59:37 am -
2 stops10h 37m
Deal found 8/1![Frontier logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/2810:55 pm -
1 stop12h 41m
Mon 8/318:17 am -
2 stops33h 42m
Deal found 8/2![Frontier logo]()
$289
This Trip.com deal was found by Cheapflights users on 8/3. 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.
Mon 10/1910:55 pm -
1 stop11h 17m
Wed 10/218:07 am -
1 stop10h 53m
Deal found 8/3![Frontier logo]()
$291
This Frontier deal was found by Cheapflights users on 8/3. 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 8/2110:55 pm -
1 stop12h 41m
Tue 9/89:37 am -
1 stop9h 23m
Deal found 8/3![Frontier logo]()
$292
This Frontier deal was found by Cheapflights users on 8/4. 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 10/2910:55 pm -
1 stop11h 17m
Thu 11/128:07 am -
1 stop10h 53m
Deal found 8/4![Frontier logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/410:55 pm -
1 stop12h 41m
Tue 9/83:13 pm -
2 stops21h 47m
Deal found 8/3![Frontier logo]()
$296
This Frontier deal was found by Cheapflights users on 8/1. 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 10/2910:55 pm -
1 stop11h 17m
Sun 11/18:07 am -
1 stop10h 53m
Deal found 8/1![Frontier logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/2110:55 pm -
1 stop12h 41m
Tue 8/259:37 am -
2 stops10h 37m
Deal found 8/4![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/2510:55 pm -
1 stop12h 41m
Wed 9/29:37 am -
2 stops10h 37m
Deal found 8/4![Frontier logo]()
$299
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 August 6, 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 August 6, 2026.
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/51:25 pm -
2 stops10h 28m
Sat 9/125:00 am -
2 stops9h 25m
Deal found 8/3![United Airlines logo]()
$298
This Delta deal was found by Cheapflights users on 8/4. 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 23m
Deal found 8/4![Delta logo]()
$302
This Southwest deal was found by Cheapflights users on 8/4. 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.
Fri 11/68:30 am -
1 stop7h 35m
Tue 11/101:55 pm -
1 stop6h 30m
Deal found 8/4![Southwest logo]()
$302
This Southwest deal was found by Cheapflights users on 8/5. 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 9/16:55 am -
1 stop10h 30m
Sat 9/59:25 am -
1 stop10h 35m
Deal found 8/5![Southwest logo]()
$307
This Delta deal was found by Cheapflights users on 8/4. 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 2/26:00 am -
1 stop8h 27m
Fri 2/57:00 am -
1 stop7h 42m
Deal found 8/4![Delta logo]()
$358
This United Airlines deal was found by Cheapflights users on 8/5. 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 10/34:15 pm -
1 stop9h 34m
Sun 10/116:00 am -
1 stop10h 19m
Deal found 8/5![United Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 8/1. 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
Sun 10/410:00 pm -
1 stop7h 07m
Deal found 8/1![Delta logo]()
$372
This Southwest deal was found by Cheapflights users on 8/2. 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 8/297:00 am -
1 stop10h 30m
Sat 9/510:15 am -
2 stops8h 30m
Deal found 8/2![Southwest logo]()
$373
This United Airlines deal was found by Cheapflights users on 8/2. 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 1/163:45 pm -
1 stop8h 36m
Sat 1/236:45 am -
1 stop7h 24m
Deal found 8/2![United Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 8/5. 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.
Sun 10/256:55 am -
1 stop10h 10m
Wed 11/2512:50 pm -
1 stop7h 35m
Deal found 8/5![Southwest logo]()
$392
This United Airlines deal was found by Cheapflights users on 8/4. 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 8/183:29 pm -
1 stop10h 06m
Tue 8/257:00 am -
1 stop8h 25m
Deal found 8/4![United Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 8/3. 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 8/257:45 am -
2 stops15h 16m
Tue 9/16:08 am -
2 stops14h 16m
Deal found 8/3![United Airlines logo]()
$427
Last-minute flights from LaGuardia to OntarioDiscover last-minute flight deals from LaGuardia to Ontario. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Ontario. Data last updated August 6, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:55 pm -
1 stop12h 43m
Tue 9/19:37 am -
1 stop9h 23m
Deal found 8/3![Frontier logo]()
$293
This Frontier deal was found by Cheapflights users on 8/3. 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 8/2110:55 pm -
1 stop12h 41m
Tue 9/89:37 am -
1 stop9h 23m
Deal found 8/3![Frontier logo]()
$292
This Delta deal was found by Cheapflights users on 8/1. 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 8/2112:59 pm -
1 stop8h 31m
Tue 8/257:05 am -
1 stop7h 45m
Deal found 8/1![Delta logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/2110:55 pm -
1 stop12h 41m
Tue 8/259:37 am -
2 stops10h 37m
Deal found 8/4![Frontier logo]()
$298
This Super.com deal was found by Cheapflights users on 8/5. 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 8/2110:55 pm -
1 stop12h 41m
Sat 8/299:37 am -
1 stop9h 23m
Deal found 8/5![Frontier logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/2510:55 pm -
1 stop12h 41m
Wed 9/29:37 am -
2 stops10h 37m
Deal found 8/4![Frontier logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/2810:55 pm -
1 stop12h 41m
Mon 8/318:17 am -
2 stops33h 42m
Deal found 8/2![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:55 pm -
1 stop12h 43m
Sat 9/59:37 am -
2 stops10h 37m
Deal found 8/1![Frontier logo]()
$288
This HOPEGOO deal was found by Cheapflights users on 8/1. 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.
Tue 9/110:55 pm -
1 stop12h 41m
Tue 9/89:37 am -
1 stop9h 23m
Deal found 8/1![Frontier logo]()
$281
This FlightHub deal was found by Cheapflights users on 8/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:55 pm -
1 stop12h 43m
Sun 9/68:17 am -
1 stop10h 43m
Deal found 8/2![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/410:55 pm -
1 stop12h 41m
Tue 9/83:13 pm -
2 stops21h 47m
Deal found 8/3![Frontier logo]()
$296
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/54:16 pm -
1 stop9h 19m
Sat 9/127:00 am -
1 stop7h 25m
Deal found 8/3![United Airlines logo]()
$287
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 August 6, 2026.
Search for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Delta deal was found by Cheapflights users on 8/5. 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 8/196:00 am -
1 stop7h 42m
Deal found 8/5![Delta logo]()
$154
This American Airlines deal was found by Cheapflights users on 8/4. 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 10/247:00 am -
1 stop7h 53m
Deal found 8/4![American Airlines logo]()
$155
This United Airlines deal was found by Cheapflights users on 8/4. 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 8/1911:20 am -
2 stops11h 41m
Deal found 8/4![United Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 8/4. 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 9/113:00 pm -
1 stop8h 05m
Deal found 8/4![Delta logo]()
$164
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:55 pm -
1 stop11h 17m
Deal found 8/6![Frontier logo]()
$165
This Super.com deal was found by Cheapflights users on 8/5. 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 10/2310:55 pm -
1 stop11h 17m
Deal found 8/5![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 8/4. 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 10/2210:55 pm -
1 stop11h 17m
Deal found 8/4![Frontier logo]()
$168
This Super.com deal was found by Cheapflights users on 8/3. 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.
Sat 8/2910:55 pm -
1 stop12h 43m
Deal found 8/3![Frontier logo]()
$169
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.
Thu 9/310:55 pm -
1 stop12h 43m
Deal found 8/6![Frontier logo]()
$170
This HOPEGOO deal was found by Cheapflights users on 8/5. 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.
Wed 8/2610:55 pm -
1 stop12h 43m
Deal found 8/5![Frontier logo]()
$172
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 August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $281 (HOPEGOO) |
One-way from | $154 (Delta) |
Popular in | December |
Cheapest in | February |
Average price | $422 |
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 2,558,603 searches. Data last updated August 6, 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
Sat 9/5
1:25 pm-8:53 pm
2 stops10h 28m
Ontario
Sat 9/12
5:00 am-5:25 pm
2 stops9h 25m
$298
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 9/12
6:00 am-11:05 am
1 stop8h 05m
Ontario
Sat 9/19
12:17 pm-11:40 pm
1 stop8h 23m
$302
Quickest round-trip
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Fri 11/6
8:30 am-1:05 pm
1 stop7h 35m
Ontario
Tue 11/10
1:55 pm-11:25 pm
1 stop6h 30m
$302
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Tue 9/1
6:55 am-2:25 pm
1 stop10h 30m
Ontario
Sat 9/5
9:25 am-11:00 pm
1 stop10h 35m
$307
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Tue 2/2
6:00 am-11:27 am
1 stop8h 27m
Ontario
Fri 2/5
7:00 am-5:42 pm
1 stop7h 42m
$358
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Thu 10/1
6:00 am-11:09 am
1 stop8h 09m
Ontario
Sun 10/4
10:00 pm-8:07 am
1 stop7h 07m
$372
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 10/3
4:15 pm-10:49 pm
1 stop9h 34m
Ontario
Sun 10/11
6:00 am-7:19 pm
1 stop10h 19m
$373
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 8/29
7:00 am-2:30 pm
1 stop10h 30m
Ontario
Sat 9/5
10:15 am-9:45 pm
2 stops8h 30m
$373
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sun 10/25
6:55 am-2:05 pm
1 stop10h 10m
Ontario
Wed 11/25
12:50 pm-11:25 pm
1 stop7h 35m
$392
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 1/16
3:45 pm-9:21 pm
1 stop8h 36m
Ontario
Sat 1/23
6:45 am-5:09 pm
1 stop7h 24m
$407
Showing 1-10 of 23 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 August.
| 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 $332 and $532 in September.The cheapest round-trip price found within the last 5 days was $281 on Frontier (Sep 1-Sep 8).
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 6, 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.
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
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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Alternative routes for LaGuardia to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from LaGuardia to Ontario by cabin class
Find flights from LaGuardia to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 6, 2026.
LaGuardia and Ontario flights
Browse other LaGuardia and Ontario flight options. Last updated on August 6, 2026.
Other flights from LaGuardia
Browse through other flights departing from LaGuardia. Flights are based on user searches made on Cheapflights and were last updated on August 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 2,558,603 searches. Data last updated August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$448 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$227 | Average$411 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$266 | Average$468 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$279 | Average$403 | FlexibilityNo cancel fee | On-timeN/A |