$152+ 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ONT
Jul 23 — Jul 301
Round-trip
1 adult, Economy
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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 June 23, 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 June 23, 2026.
This Frontier deal was found by Cheapflights users on 6/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Sun 9/68:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$306
This Frontier deal was found by Cheapflights users on 6/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Mon 8/318:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$312
This Frontier deal was found by Cheapflights users on 6/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Sun 8/238:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$313
This Frontier deal was found by Cheapflights users on 6/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Fri 7/248:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$314
This HOPEGOO deal was found by Cheapflights users on 6/18. 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.
Wed 7/810:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 7/118:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/18![Frontier logo]()
$316
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:47 pm
LGA
- ONT
1 stop8h 12m
American Airlines
Mon 7/2011:59 pm
ONT
- LGA
1 stop7h 31m
American Airlines
Deal found 6/21![American Airlines logo]()
$317
This Booking.com deal was found by Cheapflights users on 6/19. 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.
Wed 8/1210:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Mon 8/178:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/19![Frontier logo]()
$318
This Kissandfly.com deal was found by Cheapflights users on 6/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Fri 8/78:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/18![Frontier logo]()
$319
This Booking.com deal was found by Cheapflights users on 6/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1710:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 8/18:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/21![Frontier logo]()
$320
This Booking.com deal was found by Cheapflights users on 6/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1710:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Mon 7/208:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$321
This Mytrip deal was found by Cheapflights users on 6/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Thu 8/138:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$323
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 June 23, 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 June 23, 2026.
This Southwest deal was found by Cheapflights users on 6/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:30 pm
LGA
- ONT
2 stops9h 55m
Southwest
Mon 8/2412:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Deal found 6/22![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 6/20. 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 7/44:05 pm
LGA
- ONT
1 stop9h 46m
United Airlines
Sat 7/116:10 am
ONT
- LGA
1 stop9h 12m
United Airlines
Deal found 6/20![United Airlines logo]()
$382
This Southwest deal was found by Cheapflights users on 6/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am
LGA
- ONT
2 stops9h 30m
Southwest
Mon 8/3112:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Deal found 6/21![Southwest logo]()
$373
This United Airlines deal was found by Cheapflights users on 6/19. 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 7/45:25 pm
LGA
- ONT
1 stop8h 26m
United Airlines
Wed 7/295:45 am
ONT
- LGA
1 stop10h 19m
United Airlines
Deal found 6/19![United Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sat 7/44:05 pm
LGA
- ONT
1 stop9h 46m
United Airlines
Wed 7/85:45 am
ONT
- LGA
1 stop10h 19m
United Airlines
Deal found 6/22![United Airlines logo]()
$382
This Southwest deal was found by Cheapflights users on 6/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:30 pm
LGA
- ONT
2 stops9h 55m
Southwest
Mon 8/3112:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Deal found 6/22![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 6/19. 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 7/33:38 pm
LGA
- ONT
1 stop9h 17m
United Airlines
Wed 7/295:45 am
ONT
- LGA
1 stop10h 19m
United Airlines
Deal found 6/19![United Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 6/20. 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.
Fri 7/34:30 pm
LGA
- ONT
2 stops10h 00m
Southwest
Tue 7/71:20 pm
ONT
- LGA
1 stop6h 50m
Southwest
Deal found 6/20![Southwest logo]()
$443
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Tue 8/1810:15 am
LGA
- ONT
2 stops12h 46m
United Airlines
Wed 8/197:00 am
ONT
- LGA
1 stop8h 25m
United Airlines
Deal found 6/22![United Airlines logo]()
$417
This Southwest deal was found by Cheapflights users on 6/20. 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.
Wed 7/154:55 pm
LGA
- ONT
1 stop8h 25m
Southwest
Wed 7/225:15 am
ONT
- LGA
2 stops8h 45m
Southwest
Deal found 6/20![Southwest logo]()
$457
This Southwest deal was found by Cheapflights users on 6/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:55 am
LGA
- ONT
2 stops10h 05m
Southwest
Mon 10/1211:55 pm
ONT
- LGA
1 stop8h 25m
Southwest
Deal found 6/21![Southwest logo]()
$463
This United Airlines deal was found by Cheapflights users on 6/22. 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 7/32:00 pm
LGA
- ONT
1 stop10h 55m
United Airlines
Wed 7/85:45 am
ONT
- LGA
1 stop7h 59m
United Airlines
Deal found 6/22![United Airlines logo]()
$470
Last-minute flights from LaGuardia to OntarioDiscover last-minute flight deals from LaGuardia to Ontario. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Ontario. Data last updated June 23, 2026 and is based on user searches.
This HOPEGOO deal was found by Cheapflights users on 6/18. 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.
Wed 7/810:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 7/118:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/18![Frontier logo]()
$316
This HOPEGOO deal was found by Cheapflights users on 6/22. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Fri 7/178:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$324
This American Airlines deal was found by Cheapflights users on 6/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:47 pm
LGA
- ONT
1 stop8h 12m
American Airlines
Mon 7/1311:59 pm
ONT
- LGA
1 stop9h 14m
American Airlines
Deal found 6/22![American Airlines logo]()
$312
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:47 pm
LGA
- ONT
1 stop8h 12m
American Airlines
Mon 7/2011:59 pm
ONT
- LGA
1 stop7h 31m
American Airlines
Deal found 6/21![American Airlines logo]()
$317
This Frontier deal was found by Cheapflights users on 6/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Fri 7/248:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$314
This Booking.com deal was found by Cheapflights users on 6/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1710:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 8/18:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/21![Frontier logo]()
$320
This Booking.com deal was found by Cheapflights users on 6/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1710:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Mon 7/208:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$321
This Frontier deal was found by Cheapflights users on 6/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2010:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 8/88:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$313
This Kissandfly.com deal was found by Cheapflights users on 6/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Fri 8/78:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/18![Frontier logo]()
$319
This CheapOair deal was found by Cheapflights users on 6/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 8/88:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/21![Frontier logo]()
$323
This Priceline deal was found by Cheapflights users on 6/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3110:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Mon 8/38:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$306
This Gotogate deal was found by Cheapflights users on 6/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3110:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Fri 8/78:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 6/22![Frontier logo]()
$325
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 June 23, 2026.
Search for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
This United Airlines deal was found by Cheapflights users on 6/20. 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 11/117:00 am
LGA
- ONT
1 stop8h 42m
United Airlines
Deal found 6/20![United Airlines logo]()
$152
This Kissandfly.com deal was found by Cheapflights users on 6/19. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:55 pm
LGA
- ONT
1 stop11h 17m
Frontier
Deal found 6/19![Frontier logo]()
$153
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:47 pm
LGA
- ONT
1 stop8h 12m
American Airlines
Deal found 6/21![American Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 6/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
LGA
- ONT
1 stop8h 07m
Delta
Deal found 6/22![Delta logo]()
$160
This United Airlines deal was found by Cheapflights users on 6/18. 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 11/145:15 pm
LGA
- ONT
1 stop8h 11m
United Airlines
Deal found 6/18![United Airlines logo]()
$164
This United Airlines deal was found by Cheapflights users on 6/20. 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 11/132:00 pm
LGA
- ONT
1 stop10h 50m
United Airlines
Deal found 6/20![United Airlines logo]()
$167
This HOPEGOO deal was found by Cheapflights users on 6/19. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Deal found 6/19![Frontier logo]()
$168
This Southwest deal was found by Cheapflights users on 6/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:55 am
LGA
- ONT
1 stop8h 45m
Southwest
Deal found 6/22![Southwest logo]()
$169
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:00 pm
LGA
- ONT
1 stop9h 11m
American Airlines
Deal found 6/18![American Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:29 am
LGA
- ONT
2 stops11h 45m
Frontier
Deal found 6/18![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 June 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $306 (Frontier) |
One-way from | $152 (United Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $368 |
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 June 23, 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 - ONT
LGAONT
New York LaGuardia
Mon 8/17
12:30 pm-7:25 pm
2 stops9h 55m
Ontario
Mon 8/24
12:25 pm-10:55 pm
1 stop7h 30m
$342
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Wed 8/26
6:00 am-12:30 pm
2 stops9h 30m
Ontario
Mon 8/31
12:25 pm-10:55 pm
1 stop7h 30m
$373
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 7/4
4:05 pm-10:51 pm
1 stop9h 46m
Ontario
Sat 7/11
6:10 am-6:22 pm
1 stop9h 12m
$382
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 7/4
5:25 pm-10:51 pm
1 stop8h 26m
Ontario
Wed 7/29
5:45 am-7:04 pm
1 stop10h 19m
$382
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 7/4
4:05 pm-10:51 pm
1 stop9h 46m
Ontario
Wed 7/8
5:45 am-7:04 pm
1 stop10h 19m
$382
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Thu 8/27
12:30 pm-7:25 pm
2 stops9h 55m
Ontario
Mon 8/31
12:25 pm-10:55 pm
1 stop7h 30m
$387
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Fri 7/3
3:38 pm-9:55 pm
1 stop9h 17m
Ontario
Wed 7/29
5:45 am-7:04 pm
1 stop10h 19m
$387
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 8/18
10:15 am-8:01 pm
2 stops12h 46m
Ontario
Wed 8/19
7:00 am-6:25 pm
1 stop8h 25m
$417
Quickest round-trip
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Fri 7/3
4:30 pm-11:30 pm
2 stops10h 00m
Ontario
Tue 7/7
1:20 pm-11:10 pm
1 stop6h 50m
$443
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Wed 7/15
4:55 pm-10:20 pm
1 stop8h 25m
Ontario
Wed 7/22
5:15 am-5:00 pm
2 stops8h 45m
$457
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 June.
| 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, October is the cheapest month in which you can book a flight from New York LaGuardia Airport to Ontario (average of $180). 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?
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 June 23, 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
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
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
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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 June 23, 2026.
LaGuardia and Ontario flights
Browse other LaGuardia and Ontario flight options. Last updated on June 23, 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 June 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from LaGuardia to Ontario
Discover the top 5 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 June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$159 | Average$314 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$180 | Average$488 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$192 | Average$448 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$227 | Average$411 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$279 | Average$444 | FlexibilityNo cancel fee | On-timeN/A |