$141+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGA
May 18 — May 251
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to LaGuardia
Cheapest
Best
Last-minute
One-way
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 April 18, 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 April 18, 2026.
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:00 pm
ONT
- LGA
1 stop8h 50m
Delta
Wed 9/24:00 pm
LGA
- ONT
1 stop8h 56m
Delta
Deal found 4/16![Delta logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:59 am
ONT
- LGA
2 stops19h 15m
Multiple Airlines
Thu 5/711:59 am
LGA
- ONT
1 stop22h 36m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
Mon 5/48:26 am
ONT
- LGA
1 stop10h 34m
Multiple Airlines
Fri 5/88:15 pm
LGA
- ONT
2 stops38h 20m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/264:39 pm
ONT
- LGA
2 stops23h 51m
Multiple Airlines
Tue 6/25:45 am
LGA
- ONT
1 stop16h 26m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:06 pm
ONT
- LGA
1 stop22h 54m
Multiple Airlines
Fri 5/1511:59 am
LGA
- ONT
1 stop23h 21m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:00 pm
ONT
- LGA
1 stop8h 50m
Delta
Thu 8/2710:00 am
LGA
- ONT
1 stop11h 01m
Delta
Deal found 4/16![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:05 am
ONT
- LGA
2 stops13h 39m
Delta
Wed 5/131:55 pm
LGA
- ONT
2 stops12h 39m
Delta
Deal found 4/17![Delta logo]()
$292
This Delta deal was found by Cheapflights users on 4/13. 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 4/2910:15 pm
ONT
- LGA
1 stop8h 24m
Delta
Tue 5/512:00 pm
LGA
- ONT
1 stop9h 33m
Delta
Deal found 4/13![Delta logo]()
$293
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:05 am
ONT
- LGA
1 stop7h 44m
Delta
Tue 6/22:46 pm
LGA
- ONT
2 stops11h 48m
Delta
Deal found 4/14![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 pm
ONT
- LGA
1 stop8h 45m
Delta
Sat 6/66:00 am
LGA
- ONT
1 stop7h 57m
Delta
Deal found 4/16![Delta logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:06 pm
ONT
- LGA
1 stop22h 54m
Multiple Airlines
Fri 5/2211:59 am
LGA
- ONT
1 stop22h 49m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$299
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 April 18, 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 April 18, 2026.
This Delta deal was found by Cheapflights users on 4/14. 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 6/110:00 pm
ONT
- LGA
2 stops11h 14m
Delta
Sat 6/66:00 am
LGA
- ONT
1 stop7h 57m
Delta
Deal found 4/14![Delta logo]()
$302
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/25:00 am
ONT
- LGA
2 stops11h 19m
United Airlines
Mon 5/45:15 pm
LGA
- ONT
1 stop8h 20m
United Airlines
Deal found 4/13![United Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:00 pm
ONT
- LGA
1 stop8h 41m
Delta
Wed 10/141:45 pm
LGA
- ONT
2 stops11h 29m
Delta
Deal found 4/15![Delta logo]()
$310
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/66:00 am
ONT
- LGA
1 stop10h 06m
United Airlines
Sat 5/97:20 am
LGA
- ONT
1 stop8h 18m
United Airlines
Deal found 4/13![United Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
- LGA
1 stop7h 38m
United Airlines
Wed 5/63:47 pm
LGA
- ONT
1 stop9h 11m
United Airlines
Deal found 4/15![United Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:45 am
ONT
- LGA
1 stop10h 26m
United Airlines
Tue 6/92:00 pm
LGA
- ONT
1 stop10h 55m
United Airlines
Deal found 4/17![United Airlines logo]()
$420
This Delta deal was found by Cheapflights users on 4/14. 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 9/177:00 am
ONT
- LGA
1 stop9h 23m
Delta
Mon 9/213:00 pm
LGA
- ONT
2 stops11h 44m
Delta
Deal found 4/14![Delta logo]()
$465
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:45 am
ONT
- LGA
2 stops12h 47m
United Airlines
Sat 9/263:45 pm
LGA
- ONT
1 stop8h 36m
United Airlines
Deal found 4/15![United Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/301:18 pm
ONT
- LGA
1 stop7h 12m
United Airlines
Tue 7/73:25 pm
LGA
- ONT
1 stop10h 26m
United Airlines
Deal found 4/17![United Airlines logo]()
$422
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:53 pm
ONT
- LGA
2 stops12h 15m
United Airlines
Sat 10/176:05 am
LGA
- ONT
2 stops14h 42m
United Airlines
Deal found 4/16![United Airlines logo]()
$447
Last-minute flights from Ontario to LaGuardiaDiscover last-minute flight deals from Ontario to LaGuardia. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to LaGuardia. Data last updated April 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/13. 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 4/2910:15 pm
ONT
- LGA
1 stop8h 24m
Delta
Tue 5/512:00 pm
LGA
- ONT
1 stop9h 33m
Delta
Deal found 4/13![Delta logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:59 am
ONT
- LGA
2 stops19h 15m
Multiple Airlines
Thu 5/711:59 am
LGA
- ONT
1 stop22h 36m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
Mon 5/48:26 am
ONT
- LGA
1 stop10h 34m
Multiple Airlines
Fri 5/88:15 pm
LGA
- ONT
2 stops38h 20m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$285
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/711:59 pm
ONT
- LGA
1 stop8h 29m
American Airlines
Tue 5/121:54 pm
LGA
- ONT
1 stop9h 33m
American Airlines
Deal found 4/14![American Airlines logo]()
$289
This American Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:59 pm
ONT
- LGA
1 stop9h 31m
American Airlines
Wed 5/134:15 pm
LGA
- ONT
1 stop10h 31m
American Airlines
Deal found 4/17![American Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 4/14. 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 5/96:00 am
ONT
- LGA
2 stops12h 58m
Delta
Tue 5/124:45 pm
LGA
- ONT
2 stops9h 49m
Delta
Deal found 4/14![Delta logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:06 pm
ONT
- LGA
1 stop22h 54m
Multiple Airlines
Fri 5/1511:59 am
LGA
- ONT
1 stop23h 21m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:06 pm
ONT
- LGA
1 stop22h 54m
Multiple Airlines
Fri 5/2211:59 am
LGA
- ONT
1 stop22h 49m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:05 am
ONT
- LGA
1 stop7h 44m
Delta
Tue 6/22:46 pm
LGA
- ONT
2 stops11h 48m
Delta
Deal found 4/14![Delta logo]()
$294
This United Airlines deal was found by Cheapflights users on 4/13. 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.
Sun 5/246:30 am
ONT
- LGA
1 stop9h 52m
United Airlines
Sat 5/304:25 pm
LGA
- ONT
1 stop9h 21m
United Airlines
Deal found 4/13![United Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/264:39 pm
ONT
- LGA
2 stops23h 51m
Multiple Airlines
Tue 6/25:45 am
LGA
- ONT
1 stop16h 26m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$286
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 April 18, 2026.
Search for one-way flight options from Ontario to LaGuardia. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1910:00 pm
ONT
- LGA
1 stop7h 14m
Delta
Deal found 4/17![Delta logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/86:00 am
ONT
- LGA
2 stops34h 29m
Frontier
Deal found 4/13![Frontier logo]()
$142
This iWofly deal was found by Cheapflights users on 4/13. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/169:15 am
ONT
- LGA
1 stop9h 45m
Frontier
Deal found 4/13![Frontier logo]()
$143
This Trip.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:05 am
ONT
- LGA
1 stop10h 59m
Frontier
Deal found 4/15![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 4/14. 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 5/208:30 am
ONT
- LGA
1 stop10h 30m
Frontier
Deal found 4/14![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/153:34 pm
ONT
- LGA
2 stops27h 26m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$148
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:05 am
ONT
- LGA
1 stop7h 44m
Delta
Deal found 4/13![Delta logo]()
$149
This Frontier deal was found by Cheapflights users on 4/14. 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 6/88:03 am
ONT
- LGA
1 stop10h 57m
Frontier
Deal found 4/14![Frontier logo]()
$151
This Trip.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/148:06 pm
ONT
- LGA
1 stop22h 54m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$152
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 April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $281 (Delta) |
One-way from | $141 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $335 |
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 April 18, 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
Mon 6/1
10:00 pm-12:14 pm
2 stops11h 14m
New York LaGuardia
Sat 6/6
6:00 am-10:57 am
1 stop7h 57m
$302
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Wed 10/7
12:00 pm-11:41 pm
1 stop8h 41m
New York LaGuardia
Wed 10/14
1:45 pm-10:14 pm
2 stops11h 29m
$310
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Sat 5/2
5:00 am-7:19 pm
2 stops11h 19m
New York LaGuardia
Mon 5/4
5:15 pm-10:35 pm
1 stop8h 20m
$358
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Wed 5/6
6:00 am-7:06 pm
1 stop10h 06m
New York LaGuardia
Sat 5/9
7:20 am-12:38 pm
1 stop8h 18m
$391
Quickest round-trip
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 5/5
6:00 am-4:38 pm
1 stop7h 38m
New York LaGuardia
Wed 5/6
3:47 pm-9:58 pm
1 stop9h 11m
$403
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 6/2
5:45 am-7:11 pm
1 stop10h 26m
New York LaGuardia
Tue 6/9
2:00 pm-9:55 pm
1 stop10h 55m
$420
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Sat 9/19
5:45 am-9:32 pm
2 stops12h 47m
New York LaGuardia
Sat 9/26
3:45 pm-9:21 pm
1 stop8h 36m
$420
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 6/30
1:18 pm-11:30 pm
1 stop7h 12m
New York LaGuardia
Tue 7/7
3:25 pm-10:51 pm
1 stop10h 26m
$422
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Tue 10/13
6:53 pm-10:08 am
2 stops12h 15m
New York LaGuardia
Sat 10/17
6:05 am-5:47 pm
2 stops14h 42m
$447
OntarioNew York
ONT - LGA
ONTLGA
Ontario
Thu 9/17
7:00 am-7:23 pm
1 stop9h 23m
New York LaGuardia
Mon 9/21
3:00 pm-11:44 pm
2 stops11h 44m
$465
Showing 1-10 of 22 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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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
Prices
Airlines
More
How far ahead should I book a flight from Ontario to New York LaGuardia Airport?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to LaGuardia. Price data was last updated on April 10, 2026.
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 52 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, January 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 June is currently the most expensive (average of $491). 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?
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 50% 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 $189.
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: 8h 28m.
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 3h 33m.
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 April 18, 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.
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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
East Rutherford
Yonkers
Secaucus
Mount Laurel
North Bergen
Elizabeth
Irvington
Staten Island
Seaside Heights
Absecon
Parsippany
Edgewater
Carle Place
Tannersville
Carteret
Stamford
New Brunswick
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
LaGuardia flight routes
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to LaGuardia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to LaGuardia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to LaGuardia by cabin class
Find flights from Ontario to LaGuardia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 April 18, 2026.
Ontario and LaGuardia flights
Browse other Ontario and LaGuardia flight options. Last updated on April 18, 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 April 18, 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 April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$347 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$193 | Average$333 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$197 | Average$338 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$413 | FlexibilityNo cancel fee | On-timeN/A |