$157+ Cheap flights from LaGuardia, NY (LGA) to Ontario (ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ONT
Jul 10 — Jul 171
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 10, 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 10, 2026.
This American Airlines deal was found by Cheapflights users on 6/8. 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 8/226:30 am
LGA
- ONT
1 stop10h 23m
American Airlines
Sat 8/2910:29 am
ONT
- LGA
1 stop9h 01m
American Airlines
Deal found 6/8![American Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:40 pm
LGA
- ONT
1 stop8h 25m
Southwest
Mon 8/1711:55 pm
ONT
- LGA
1 stop7h 25m
Southwest
Deal found 6/5![Southwest logo]()
$298
This Delta deal was found by Cheapflights users on 6/7. 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 6/246:00 am
LGA
- ONT
1 stop7h 40m
Delta
Fri 9/1112:00 pm
ONT
- LGA
1 stop7h 50m
Delta
Deal found 6/7![Delta logo]()
$303
This American Airlines deal was found by Cheapflights users on 6/7. 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 7/47:55 am
LGA
- ONT
1 stop8h 27m
American Airlines
Mon 7/1311:59 pm
ONT
- LGA
1 stop7h 31m
American Airlines
Deal found 6/7![American Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 6/8. 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 8/243:25 pm
LGA
- ONT
2 stops9h 40m
Southwest
Fri 8/288:10 am
ONT
- LGA
1 stop9h 45m
Southwest
Deal found 6/8![Southwest logo]()
$308
This American Airlines deal was found by Cheapflights users on 6/7. 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 6/166:30 am
LGA
- ONT
1 stop8h 19m
American Airlines
Tue 6/3011:59 pm
ONT
- LGA
1 stop9h 01m
American Airlines
Deal found 6/7![American Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:25 am
LGA
- ONT
1 stop10h 30m
Southwest
Mon 8/245:15 am
ONT
- LGA
2 stops8h 30m
Southwest
Deal found 6/6![Southwest logo]()
$313
This Southwest deal was found by Cheapflights users on 6/8. 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 7/319:35 am
LGA
- ONT
1 stop8h 50m
Southwest
Wed 8/56:50 am
ONT
- LGA
2 stops12h 40m
Southwest
Deal found 6/8![Southwest logo]()
$315
This Delta deal was found by Cheapflights users on 6/7. 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 7/146:00 am
LGA
- ONT
1 stop7h 38m
Delta
Tue 7/2110:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Deal found 6/7![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 6/8. 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 8/256:00 am
LGA
- ONT
1 stop7h 42m
Delta
Sat 8/297:05 am
ONT
- LGA
1 stop7h 49m
Delta
Deal found 6/8![Delta logo]()
$318
This Delta deal was found by Cheapflights users on 6/8. 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 6/306:00 am
LGA
- ONT
1 stop7h 40m
Delta
Tue 7/1410:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Deal found 6/8![Delta 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 10, 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 10, 2026.
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
LGA
- ONT
2 stops9h 30m
Southwest
Mon 8/1711:55 pm
ONT
- LGA
1 stop7h 25m
Southwest
Deal found 6/6![Southwest logo]()
$313
This United Airlines deal was found by Cheapflights users on 6/9. 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 8/112:25 pm
LGA
- ONT
1 stop11h 10m
United Airlines
Tue 8/259:15 am
ONT
- LGA
1 stop9h 42m
United Airlines
Deal found 6/9![United Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:00 am
LGA
- ONT
1 stop7h 40m
Delta
Sun 7/1210:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Deal found 6/6![Delta logo]()
$418
This Southwest deal was found by Cheapflights users on 6/7. 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 8/610:40 am
LGA
- ONT
1 stop8h 30m
Southwest
Thu 8/1312:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Deal found 6/7![Southwest logo]()
$349
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/12:00 pm
LGA
- ONT
1 stop10h 55m
United Airlines
Sat 7/45:45 am
ONT
- LGA
1 stop10h 19m
United Airlines
Deal found 6/6![United Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/252:00 pm
LGA
- ONT
1 stop10h 59m
United Airlines
Sat 10/36:00 am
ONT
- LGA
1 stop7h 48m
United Airlines
Deal found 6/8![United Airlines logo]()
$418
This Southwest deal was found by Cheapflights users on 6/7. 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 8/63:25 pm
LGA
- ONT
2 stops9h 40m
Southwest
Tue 8/115:45 am
ONT
- LGA
2 stops9h 00m
Southwest
Deal found 6/7![Southwest logo]()
$435
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/43:45 pm
LGA
- ONT
1 stop8h 36m
United Airlines
Mon 11/95:00 am
ONT
- LGA
1 stop7h 42m
United Airlines
Deal found 6/5![United Airlines logo]()
$444
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:00 am
LGA
- ONT
2 stops9h 45m
Southwest
Fri 7/1012:50 pm
ONT
- LGA
1 stop7h 10m
Southwest
Deal found 6/5![Southwest logo]()
$449
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/243:20 pm
LGA
- ONT
1 stop8h 26m
United Airlines
Fri 6/265:00 am
ONT
- LGA
1 stop9h 24m
United Airlines
Deal found 6/5![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/204:29 pm
LGA
- ONT
1 stop9h 22m
United Airlines
Wed 6/245:45 am
ONT
- LGA
1 stop10h 26m
United Airlines
Deal found 6/6![United Airlines logo]()
$457
Last-minute flights from LaGuardia to OntarioDiscover last-minute flight deals from LaGuardia to Ontario. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Ontario. Data last updated June 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/7. 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 6/166:30 am
LGA
- ONT
1 stop8h 19m
American Airlines
Tue 6/3011:59 pm
ONT
- LGA
1 stop9h 01m
American Airlines
Deal found 6/7![American Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 6/8. 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 6/236:00 am
LGA
- ONT
1 stop7h 40m
Delta
Fri 8/1412:00 pm
ONT
- LGA
1 stop8h 24m
Delta
Deal found 6/8![Delta logo]()
$328
This Delta deal was found by Cheapflights users on 6/7. 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 6/246:00 am
LGA
- ONT
1 stop7h 40m
Delta
Fri 9/1112:00 pm
ONT
- LGA
1 stop7h 50m
Delta
Deal found 6/7![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 6/8. 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 6/306:00 am
LGA
- ONT
1 stop7h 40m
Delta
Sun 7/1210:00 pm
ONT
- LGA
1 stop9h 41m
Delta
Deal found 6/8![Delta logo]()
$323
This American Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:00 pm
LGA
- ONT
1 stop8h 59m
American Airlines
Mon 7/611:59 pm
ONT
- LGA
1 stop9h 14m
American Airlines
Deal found 6/6![American Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 6/7. 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 7/47:55 am
LGA
- ONT
1 stop8h 27m
American Airlines
Mon 7/1311:59 pm
ONT
- LGA
1 stop7h 31m
American Airlines
Deal found 6/7![American Airlines logo]()
$306
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/46:00 am
LGA
- ONT
1 stop10h 22m
American Airlines
Thu 7/910:25 am
ONT
- LGA
1 stop9h 05m
American Airlines
Deal found 6/9![American Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Thu 7/93:25 pm
LGA
- ONT
1 stop10h 26m
United Airlines
Sat 7/116:10 am
ONT
- LGA
1 stop8h 12m
United Airlines
Deal found 6/8![United Airlines logo]()
$325
This Delta deal was found by Cheapflights users on 6/7. 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 7/146:00 am
LGA
- ONT
1 stop7h 38m
Delta
Tue 7/2110:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Deal found 6/7![Delta logo]()
$317
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/176:00 pm
LGA
- ONT
1 stop8h 59m
American Airlines
Tue 7/217:00 am
ONT
- LGA
1 stop9h 22m
American Airlines
Deal found 6/9![American Airlines logo]()
$333
This Southwest deal was found by Cheapflights users on 6/8. 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 7/319:35 am
LGA
- ONT
1 stop8h 50m
Southwest
Wed 8/56:50 am
ONT
- LGA
2 stops12h 40m
Southwest
Deal found 6/8![Southwest logo]()
$315
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 10, 2026.
Search for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Trip.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
LGA
- ONT
1 stop7h 42m
Delta
Deal found 6/6![Delta logo]()
$157
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:00 am
LGA
- ONT
1 stop7h 47m
Delta
Deal found 6/9![Delta logo]()
$160
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/96:00 pm
LGA
- ONT
1 stop8h 59m
American Airlines
Deal found 6/9![American Airlines logo]()
$162
This American Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:00 pm
LGA
- ONT
1 stop8h 59m
American Airlines
Deal found 6/6![American Airlines logo]()
$164
This Southwest deal was found by Cheapflights users on 6/8. 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 8/1710:20 am
LGA
- ONT
1 stop12h 00m
Southwest
Deal found 6/8![Southwest logo]()
$165
This Delta deal was found by Cheapflights users on 6/8. 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 6/236:00 am
LGA
- ONT
1 stop7h 40m
Delta
Deal found 6/8![Delta logo]()
$170
This Trip.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:55 pm
LGA
- ONT
2 stops14h 10m
Frontier
Deal found 6/6![Frontier logo]()
$174
This American Airlines deal was found by Cheapflights users on 6/9. 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
Deal found 6/9![American Airlines logo]()
$178
This American Airlines deal was found by Cheapflights users on 6/10. 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 6/195:01 pm
LGA
- ONT
1 stop9h 58m
American Airlines
Deal found 6/10![American Airlines logo]()
$179
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:35 pm
LGA
- ONT
2 stops10h 10m
Southwest
Deal found 6/5![Southwest logo]()
$180
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (American Airlines) |
One-way from | $157 (Trip.com) |
Popular in | December |
Cheapest in | October |
Average price | $365 |
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 10, 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
Wed 8/12
6:00 am-12:30 pm
2 stops9h 30m
Ontario
Mon 8/17
11:55 pm-10:20 am
1 stop7h 25m
$313
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Thu 8/6
10:40 am-4:10 pm
1 stop8h 30m
Ontario
Thu 8/13
12:25 pm-10:55 pm
1 stop7h 30m
$349
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 8/11
2:25 pm-10:35 pm
1 stop11h 10m
Ontario
Tue 8/25
9:15 am-9:57 pm
1 stop9h 42m
$402
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Wed 7/1
2:00 pm-9:55 pm
1 stop10h 55m
Ontario
Sat 7/4
5:45 am-7:04 pm
1 stop10h 19m
$407
Quickest round-trip
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 6/30
6:00 am-10:40 am
1 stop7h 40m
Ontario
Sun 7/12
10:00 pm-8:10 am
1 stop7h 10m
$418
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Fri 9/25
2:00 pm-9:59 pm
1 stop10h 59m
Ontario
Sat 10/3
6:00 am-4:48 pm
1 stop7h 48m
$418
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Thu 8/6
3:25 pm-10:05 pm
2 stops9h 40m
Ontario
Tue 8/11
5:45 am-5:45 pm
2 stops9h 00m
$435
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Wed 11/4
3:45 pm-9:21 pm
1 stop8h 36m
Ontario
Mon 11/9
5:00 am-3:42 pm
1 stop7h 42m
$444
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Fri 7/3
6:00 am-12:45 pm
2 stops9h 45m
Ontario
Fri 7/10
12:50 pm-11:00 pm
1 stop7h 10m
$449
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Wed 6/24
3:20 pm-8:46 pm
1 stop8h 26m
Ontario
Fri 6/26
5:00 am-5:24 pm
1 stop9h 24m
$449
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from LaGuardia to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from LaGuardia to Ontario in 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 $236). Flying from New York LaGuardia Airport to Ontario in December is currently the most expensive (average of $652). 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 10, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from New York LaGuardia Airport to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
7.9
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
7.9
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
7.9
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
7.9
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
7.9
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
7.9
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from LaGuardia to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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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 10, 2026.
LaGuardia and Ontario flights
Browse other LaGuardia and Ontario flight options. Last updated on June 10, 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 10, 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 10, 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 |