$134+ Cheap flights from Ontario (ONT) to LaGuardia, NY (LGA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGA
Aug 27 — Sep 31
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to LaGuardia 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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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 Ontario to LaGuardia
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Cheapest flights from Ontario to LaGuardiaExplore the most affordable flight options available from Ontario to LaGuardia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
Explore the most affordable flight options available from Ontario to LaGuardia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
This Frontier deal was found by Cheapflights users on 7/27. 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 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Sat 8/2910:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Deal found 7/27![Frontier logo]()
$290
This Southwest deal was found by Cheapflights users on 7/28. 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 8/288:10 am
ONT
- LGA
1 stop9h 45m
Southwest
Tue 9/16:00 am
LGA
- ONT
2 stops9h 40m
Southwest
Deal found 7/28![Southwest logo]()
$292
This Frontier deal was found by Cheapflights users on 7/27. 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 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Fri 8/2110:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Deal found 7/27![Frontier logo]()
$293
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:18 pm
ONT
- LGA
1 stop7h 24m
Delta
Wed 11/46:00 am
LGA
- ONT
1 stop8h 08m
Delta
Deal found 7/24![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 7/27. 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 8/2112:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Mon 8/249:40 am
LGA
- ONT
2 stops12h 45m
Southwest
Deal found 7/27![Southwest logo]()
$298
This Trip.com deal was found by Cheapflights users on 7/27. 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.
Sat 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Sat 9/510:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Deal found 7/27![Frontier logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:56 pm
ONT
- LGA
2 stops20h 48m
Frontier
Tue 9/1510:55 pm
LGA
- ONT
1 stop22h 21m
Frontier
Deal found 7/23![Frontier logo]()
$301
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:29 am
ONT
- LGA
1 stop8h 58m
American Airlines
Fri 9/116:00 am
LGA
- ONT
2 stops10h 25m
American Airlines
Deal found 7/24![American Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Thu 9/310:20 am
LGA
- ONT
2 stops14h 45m
Southwest
Deal found 7/24![Southwest logo]()
$303
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/191:18 pm
ONT
- LGA
1 stop7h 06m
United Airlines
Fri 8/212:25 pm
LGA
- ONT
1 stop11h 10m
United Airlines
Deal found 7/27![United Airlines logo]()
$304
This Trip.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Tue 9/810:55 pm
LGA
- ONT
1 stop11h 17m
Frontier
Deal found 7/23![Frontier logo]()
$308
Best flights from Ontario to LaGuardiaDiscover carefully curated flight deals from Ontario to LaGuardia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
Discover carefully curated flight deals from Ontario to LaGuardia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
This Southwest deal was found by Cheapflights users on 7/28. 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 9/1610:55 am
ONT
- LGA
1 stop8h 40m
Southwest
Wed 9/236:00 am
LGA
- ONT
2 stops9h 30m
Southwest
Deal found 7/28![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Wed 8/266:00 am
LGA
- ONT
1 stop7h 42m
Delta
Deal found 7/24![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 am
ONT
- LGA
1 stop7h 25m
United Airlines
Mon 8/312:55 pm
LGA
- ONT
2 stops11h 04m
United Airlines
Deal found 7/24![United Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Thu 8/276:30 am
LGA
- ONT
2 stops9h 55m
Southwest
Deal found 7/23![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:00 am
ONT
- LGA
1 stop12h 15m
Southwest
Wed 8/266:00 am
LGA
- ONT
2 stops9h 30m
Southwest
Deal found 7/24![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 7/28. 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 8/278:10 am
ONT
- LGA
1 stop11h 45m
Southwest
Sat 9/57:00 am
LGA
- ONT
1 stop10h 30m
Southwest
Deal found 7/28![Southwest logo]()
$328
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/287:00 am
ONT
- LGA
1 stop8h 25m
United Airlines
Mon 8/313:29 pm
LGA
- ONT
1 stop10h 06m
United Airlines
Deal found 7/26![United Airlines logo]()
$397
This United Airlines deal was found by Cheapflights users on 7/25. 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 8/55:00 am
ONT
- LGA
1 stop7h 46m
United Airlines
Wed 8/195:25 pm
LGA
- ONT
1 stop8h 10m
United Airlines
Deal found 7/25![United Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 7/25. 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 8/115:00 am
ONT
- LGA
1 stop9h 26m
United Airlines
Sat 8/227:20 am
LGA
- ONT
2 stops15h 41m
United Airlines
Deal found 7/25![United Airlines logo]()
$457
This Southwest deal was found by Cheapflights users on 7/26. 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 8/47:00 am
ONT
- LGA
1 stop10h 15m
Southwest
Tue 8/116:00 am
LGA
- ONT
2 stops9h 30m
Southwest
Deal found 7/26![Southwest logo]()
$438
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/256:00 am
ONT
- LGA
1 stop10h 21m
United Airlines
Tue 9/297:29 am
LGA
- ONT
1 stop8h 17m
United Airlines
Deal found 7/27![United Airlines logo]()
$467
Last-minute flights from Ontario to LaGuardiaDiscover last-minute flight deals from Ontario to LaGuardia. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to LaGuardia. Data last updated July 28, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/27. 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 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Sat 8/2910:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Deal found 7/27![Frontier logo]()
$290
This Frontier deal was found by Cheapflights users on 7/27. 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 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Fri 8/2110:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Deal found 7/27![Frontier logo]()
$293
This Trip.com deal was found by Cheapflights users on 7/27. 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.
Sat 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Sat 9/510:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Deal found 7/27![Frontier logo]()
$299
This Trip.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Tue 9/810:55 pm
LGA
- ONT
1 stop11h 17m
Frontier
Deal found 7/23![Frontier logo]()
$308
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/191:18 pm
ONT
- LGA
1 stop7h 06m
United Airlines
Fri 8/212:25 pm
LGA
- ONT
1 stop11h 10m
United Airlines
Deal found 7/27![United Airlines logo]()
$304
This Southwest deal was found by Cheapflights users on 7/27. 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 8/2112:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Mon 8/249:40 am
LGA
- ONT
2 stops12h 45m
Southwest
Deal found 7/27![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 7/26. 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 8/255:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Tue 9/16:00 am
LGA
- ONT
2 stops9h 30m
Southwest
Deal found 7/26![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Thu 9/310:20 am
LGA
- ONT
2 stops14h 45m
Southwest
Deal found 7/24![Southwest logo]()
$303
This Frontier deal was found by Cheapflights users on 7/26. 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 8/269:37 am
ONT
- LGA
1 stop9h 23m
Frontier
Sat 8/2910:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Deal found 7/26![Frontier logo]()
$313
This Southwest deal was found by Cheapflights users on 7/28. 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 8/288:10 am
ONT
- LGA
1 stop9h 45m
Southwest
Tue 9/16:00 am
LGA
- ONT
2 stops9h 40m
Southwest
Deal found 7/28![Southwest logo]()
$292
This Frontier deal was found by Cheapflights users on 7/27. 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 8/318:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Tue 9/110:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Deal found 7/27![Frontier logo]()
$312
One-way flights from Ontario to LaGuardiaSearch for one-way flight options from Ontario to LaGuardia. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
Search for one-way flight options from Ontario to LaGuardia. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Super.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:07 am
ONT
- LGA
1 stop10h 53m
Frontier
Deal found 7/23![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:07 am
ONT
- LGA
1 stop10h 53m
Frontier
Deal found 7/24![Frontier logo]()
$135
This Delta deal was found by Cheapflights users on 7/26. 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.
Mon 8/1710:00 pm
ONT
- LGA
1 stop9h 41m
Delta
Deal found 7/26![Delta logo]()
$143
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/2810:29 am
ONT
- LGA
1 stop8h 58m
American Airlines
Deal found 7/26![American Airlines logo]()
$145
This Southwest deal was found by Cheapflights users on 7/28. 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 9/27:25 am
ONT
- LGA
1 stop12h 35m
Southwest
Deal found 7/28![Southwest logo]()
$149
This Kissandfly.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:07 am
ONT
- LGA
1 stop8h 37m
Frontier
Deal found 7/24![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/225:31 pm
ONT
- LGA
1 stop23h 13m
Frontier
Deal found 7/26![Frontier logo]()
$157
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/25:00 am
ONT
- LGA
2 stops11h 25m
United Airlines
Deal found 7/28![United Airlines logo]()
$159
This Super.com deal was found by Cheapflights users on 7/27. 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 8/158:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/27![Frontier logo]()
$163
This Super.com deal was found by Cheapflights users on 7/26. 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.
Tue 9/89:37 am
ONT
- LGA
1 stop9h 23m
Frontier
Deal found 7/26![Frontier logo]()
$164
Find flight deals from Ontario to LaGuardia
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to LaGuardia (LGA). 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 July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $290 (Frontier) |
One-way from | $134 (Super.com) |
Popular in | December |
Cheapest in | February |
Average price | $413 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to LaGuardia 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 July 28, 2026.
Use the filters below to find and compare flights from Ontario to New York LaGuardia Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Wed 9/16
10:55 am-10:35 pm
1 stop8h 40m
New York LaGuardia
Wed 9/23
6:00 am-12:30 pm
2 stops9h 30m
$292
Quickest round-trip
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Mon 8/17
10:00 pm-8:10 am
1 stop7h 10m
New York LaGuardia
Wed 8/26
6:00 am-10:42 am
1 stop7h 42m
$297
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 8/25
5:45 am-4:55 pm
2 stops8h 10m
New York LaGuardia
Thu 8/27
6:30 am-1:25 pm
2 stops9h 55m
$297
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Fri 8/21
7:00 am-10:15 pm
1 stop12h 15m
New York LaGuardia
Wed 8/26
6:00 am-12:30 pm
2 stops9h 30m
$298
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Thu 8/27
8:10 am-10:55 pm
1 stop11h 45m
New York LaGuardia
Sat 9/5
7:00 am-2:30 pm
1 stop10h 30m
$328
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Wed 8/26
7:00 am-5:25 pm
1 stop7h 25m
New York LaGuardia
Mon 8/31
2:55 pm-10:59 pm
2 stops11h 04m
$329
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Fri 8/28
7:00 am-6:25 pm
1 stop8h 25m
New York LaGuardia
Mon 8/31
3:29 pm-10:35 pm
1 stop10h 06m
$397
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Wed 8/5
5:00 am-3:46 pm
1 stop7h 46m
New York LaGuardia
Wed 8/19
5:25 pm-10:35 pm
1 stop8h 10m
$437
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 8/4
7:00 am-8:15 pm
1 stop10h 15m
New York LaGuardia
Tue 8/11
6:00 am-12:30 pm
2 stops9h 30m
$438
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 8/11
5:00 am-5:26 pm
1 stop9h 26m
New York LaGuardia
Sat 8/22
7:20 am-8:01 pm
2 stops15h 41m
$457
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Ontario to LaGuardia
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 Ontario to LaGuardia in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-New York LaGuardia Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-New York LaGuardia Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-New York LaGuardia Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-New York LaGuardia Airport 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 Ontario-New York LaGuardia Airport 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 Ontario to LaGuardia
Have a flexible travel schedule? Discover the best time to fly to LaGuardia from Ontario with our price prediction graph.
ONT-LGA
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 Ontario to New York LaGuardia Airport
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How far ahead should I book a flight from Ontario to New York LaGuardia Airport?
To ensure you get the cheapest price possible for a flight from Ontario to New York LaGuardia Airport, you should look to book at least 51 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Ontario to New York LaGuardia Airport?
Currently, February is the cheapest month in which you can book a flight from Ontario to New York LaGuardia Airport (average of $279). Flying from Ontario to New York LaGuardia Airport in December is currently the most expensive (average of $543). 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 Ontario to New York LaGuardia Airport?
Airfare is below average for this route at the moment.
Ontario to New York LaGuardia Airport flights typically cost between $326 and $468 in August.The cheapest round-trip price found within the last 5 days was $290 on Frontier (Aug 15-Aug 29).
What’s the top layover airport for flights from Ontario to New York LaGuardia Airport?
Share of 1-stop round-trip flights from Ontario to New York LaGuardia Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Dallas (DFW) – chosen by Cheapflights users on 80% of 1-stop itineraries from Ontario to New York LaGuardia Airport on Cheapflights.
What’s the cheapest layover airport for flights from Ontario to New York LaGuardia Airport?
Average round-trip fare for 1-stop flights from Ontario to New York LaGuardia Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Dallas (DFW) is the most affordable 1-stop option, with an average round-trip price of $272.
What’s the fastest layover option from Ontario to New York LaGuardia Airport?
Shortest average travel time for 1-stop one-way flights from Ontario to New York LaGuardia Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 30m.
Which airport typically offers the quickest layover for flights from Ontario to New York LaGuardia Airport?
Average layover duration for 1-stop one-way flights from Ontario to New York LaGuardia Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 2h 53m.
Reviews of airlines servicing LaGuardia
Get insights into the airlines that provide service to LaGuardia. 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 LaGuardia. Reviews last updated July 28, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Ontario to New York LaGuardia Airport 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
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to LaGuardia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near New York LaGuardia Airport?
Book flights to New York LaGuardia Airport if you plan to visit one of these locationsQueens
Bronx
Mahwah
Elizabeth
East Rutherford
Staten Island
Yonkers
Mount Laurel
Irvington
Secaucus
North Bergen
Tannersville
Edgewater
Carle Place
Absecon
Carteret
Fort Lee
Parsippany
Avenel
Carlstadt
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Alternative routes for Ontario to LaGuardia
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Other flights to LaGuardia
Explore flights to LaGuardia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 28, 2026.
Ontario and LaGuardia flights
Browse other Ontario and LaGuardia flight options. Last updated on July 28, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on July 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to LaGuardia
Discover the top 4 airlines that operate flights from Ontario to LaGuardia. 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 July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$364 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$193 | Average$341 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$197 | Average$338 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$366 | FlexibilityNo cancel fee | On-timeN/A |