$155+ 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
Aug 6 — Aug 131
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 July 7, 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 July 7, 2026.
This Frontier deal was found by Cheapflights users on 7/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Thu 8/208:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/7![Frontier logo]()
$311
This Frontier deal was found by Cheapflights users on 7/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1410:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Mon 7/208:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/7![Frontier logo]()
$312
This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:40 am
LGA
- ONT
2 stops12h 45m
Southwest
Mon 8/2412:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Deal found 7/2![Southwest logo]()
$313
This Gotogate deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Tue 9/19:37 am
ONT
- LGA
1 stop9h 23m
Frontier
Deal found 7/2![Frontier logo]()
$314
This Southwest deal was found by Cheapflights users on 7/6. 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 8/54:40 pm
LGA
- ONT
1 stop8h 25m
Southwest
Wed 8/125:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Deal found 7/6![Southwest logo]()
$316
This HOPEGOO deal was found by Cheapflights users on 7/7. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Tue 8/118:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/7![Frontier logo]()
$317
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:40 am
LGA
- ONT
2 stops12h 45m
Southwest
Fri 8/147:00 am
ONT
- LGA
1 stop12h 15m
Southwest
Deal found 7/3![Southwest logo]()
$318
This Booking.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Thu 8/138:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/3![Frontier logo]()
$319
This Booking.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Fri 8/288:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/4![Frontier logo]()
$320
This Mytrip deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Sun 9/68:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/3![Frontier logo]()
$321
This Frontier deal was found by Cheapflights users on 7/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1110:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 8/299:37 am
ONT
- LGA
1 stop9h 23m
Frontier
Deal found 7/5![Frontier logo]()
$322
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 July 7, 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 July 7, 2026.
This Southwest deal was found by Cheapflights users on 7/6. 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.
Mon 8/106:30 am
LGA
- ONT
2 stops9h 55m
Southwest
Fri 8/148:10 am
ONT
- LGA
1 stop9h 45m
Southwest
Deal found 7/6![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 7/6. 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 7/216:00 am
LGA
- ONT
1 stop7h 38m
Delta
Mon 7/2711:48 am
ONT
- LGA
1 stop7h 39m
Delta
Deal found 7/6![Delta logo]()
$353
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Mon 8/242:25 pm
LGA
- ONT
1 stop11h 10m
United Airlines
Wed 8/267:00 am
ONT
- LGA
1 stop10h 25m
United Airlines
Deal found 7/6![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:00 am
LGA
- ONT
2 stops11h 15m
Southwest
Sun 8/3011:55 pm
ONT
- LGA
1 stop8h 30m
Southwest
Deal found 7/3![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
LGA
- ONT
1 stop7h 38m
Delta
Sun 7/2610:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Deal found 7/4![Delta logo]()
$353
This United Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:00 pm
LGA
- ONT
1 stop10h 50m
United Airlines
Tue 11/101:13 pm
ONT
- LGA
1 stop7h 03m
United Airlines
Deal found 7/4![United Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 7/6. 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.
Sat 7/186:00 am
LGA
- ONT
1 stop7h 38m
Delta
Mon 7/2711:48 am
ONT
- LGA
1 stop7h 39m
Delta
Deal found 7/6![Delta logo]()
$373
This Southwest deal was found by Cheapflights users on 7/6. 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 8/56:00 am
LGA
- ONT
2 stops9h 30m
Southwest
Wed 8/125:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Deal found 7/6![Southwest logo]()
$376
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:10 am
LGA
- ONT
2 stops13h 51m
United Airlines
Tue 8/259:15 am
ONT
- LGA
1 stop8h 44m
United Airlines
Deal found 7/2![United Airlines logo]()
$412
This Southwest deal was found by Cheapflights users on 7/5. 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 8/196:00 am
LGA
- ONT
2 stops9h 40m
Southwest
Wed 8/265:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Deal found 7/5![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Tue 12/83:45 pm
LGA
- ONT
1 stop8h 36m
United Airlines
Wed 1/65:00 am
ONT
- LGA
1 stop7h 42m
United Airlines
Deal found 7/5![United Airlines logo]()
$417
Last-minute flights from LaGuardia to OntarioDiscover last-minute flight deals from LaGuardia to Ontario. Data last updated July 7, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Ontario. Data last updated July 7, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1110:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Sat 8/299:37 am
ONT
- LGA
1 stop9h 23m
Frontier
Deal found 7/5![Frontier logo]()
$322
This Frontier deal was found by Cheapflights users on 7/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1410:55 pm
LGA
- ONT
1 stop12h 42m
Frontier
Mon 7/208:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/7![Frontier logo]()
$312
This HOPEGOO deal was found by Cheapflights users on 7/7. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Tue 8/118:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/7![Frontier logo]()
$317
This Southwest deal was found by Cheapflights users on 7/6. 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 8/54:40 pm
LGA
- ONT
1 stop8h 25m
Southwest
Wed 8/125:45 am
ONT
- LGA
2 stops8h 10m
Southwest
Deal found 7/6![Southwest logo]()
$316
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:40 am
LGA
- ONT
2 stops12h 45m
Southwest
Fri 8/147:00 am
ONT
- LGA
1 stop12h 15m
Southwest
Deal found 7/3![Southwest logo]()
$318
This Booking.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Thu 8/138:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/3![Frontier logo]()
$319
This Frontier deal was found by Cheapflights users on 7/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Thu 8/208:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/7![Frontier logo]()
$311
This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:40 am
LGA
- ONT
2 stops12h 45m
Southwest
Mon 8/2412:25 pm
ONT
- LGA
1 stop7h 30m
Southwest
Deal found 7/2![Southwest logo]()
$313
This Booking.com deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:55 pm
LGA
- ONT
1 stop12h 43m
Frontier
Fri 8/288:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/4![Frontier logo]()
$320
This Gotogate deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Tue 9/19:37 am
ONT
- LGA
1 stop9h 23m
Frontier
Deal found 7/2![Frontier logo]()
$314
This Mytrip deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:55 pm
LGA
- ONT
1 stop12h 41m
Frontier
Sun 9/68:17 am
ONT
- LGA
1 stop10h 43m
Frontier
Deal found 7/3![Frontier logo]()
$321
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 July 7, 2026.
Search for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated July 7, 2026.
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Tue 8/1811:20 am
LGA
- ONT
2 stops11h 41m
United Airlines
Deal found 7/5![United Airlines logo]()
$155
This Kissandfly.com deal was found by Cheapflights users on 7/7. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1610:55 pm
LGA
- ONT
1 stop12h 46m
Frontier
Deal found 7/7![Frontier logo]()
$157
This United Airlines deal was found by Cheapflights users on 7/6. 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 11/1111:00 am
LGA
- ONT
2 stops12h 56m
United Airlines
Deal found 7/6![United Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:29 am
LGA
- ONT
2 stops28h 03m
Frontier
Deal found 7/2![Frontier logo]()
$160
This Super.com deal was found by Cheapflights users on 7/7. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:55 pm
LGA
- ONT
1 stop11h 17m
Frontier
Deal found 7/7![Frontier logo]()
$162
This United Airlines deal was found by Cheapflights users on 7/6. 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 8/195:25 pm
LGA
- ONT
1 stop8h 10m
United Airlines
Deal found 7/6![United Airlines logo]()
$164
This American Airlines deal was found by Cheapflights users on 7/7. 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 11/1412:30 pm
LGA
- ONT
1 stop8h 52m
American Airlines
Deal found 7/7![American Airlines logo]()
$165
This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:55 am
LGA
- ONT
1 stop8h 45m
Southwest
Deal found 7/2![Southwest logo]()
$169
This American Airlines deal was found by Cheapflights users on 7/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:00 pm
LGA
- ONT
1 stop7h 57m
American Airlines
Deal found 7/5![American Airlines logo]()
$170
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 July 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $305 (Kissandfly.com) |
One-way from | $155 (United Airlines) |
Popular in | December |
Cheapest in | February |
Average price | $448 |
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 July 7, 2026.
Use the filters below to find and compare flights from New York LaGuardia Airport to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Mon 8/10
6:30 am-1:25 pm
2 stops9h 55m
Ontario
Fri 8/14
8:10 am-8:55 pm
1 stop9h 45m
$352
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 8/22
7:00 am-3:15 pm
2 stops11h 15m
Ontario
Sun 8/30
11:55 pm-11:25 am
1 stop8h 30m
$352
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 7/21
6:00 am-10:38 am
1 stop7h 38m
Ontario
Mon 7/27
11:48 am-10:27 pm
1 stop7h 39m
$353
Quickest round-trip
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 7/21
6:00 am-10:38 am
1 stop7h 38m
Ontario
Sun 7/26
10:00 pm-8:10 am
1 stop7h 10m
$353
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 7/18
6:00 am-10:38 am
1 stop7h 38m
Ontario
Mon 7/27
11:48 am-10:27 pm
1 stop7h 39m
$373
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Wed 8/5
6:00 am-12:30 pm
2 stops9h 30m
Ontario
Wed 8/12
5:45 am-4:55 pm
2 stops8h 10m
$376
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Mon 8/24
2:25 pm-10:35 pm
1 stop11h 10m
Ontario
Wed 8/26
7:00 am-8:25 pm
1 stop10h 25m
$377
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 11/3
2:00 pm-9:50 pm
1 stop10h 50m
Ontario
Tue 11/10
1:13 pm-11:16 pm
1 stop7h 03m
$377
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Wed 8/19
6:00 am-12:40 pm
2 stops9h 40m
Ontario
Wed 8/26
5:45 am-4:55 pm
2 stops8h 10m
$397
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 8/18
9:10 am-8:01 pm
2 stops13h 51m
Ontario
Tue 8/25
9:15 am-8:59 pm
1 stop8h 44m
$412
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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on New York LaGuardia Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New York LaGuardia Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New York LaGuardia Airport-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on New York LaGuardia Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New York LaGuardia Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from LaGuardia to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from LaGuardia with our price prediction graph.
LGA-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from New York LaGuardia Airport to Ontario
What is the cheapest month to book a flight from New York LaGuardia Airport to Ontario?
Currently, February is the cheapest month in which you can book a flight from New York LaGuardia Airport to Ontario (average of $279). Flying from New York LaGuardia Airport to Ontario in December is currently the most expensive (average of $658). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from New York LaGuardia Airport to Ontario?
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 July 7, 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.
Boarding
8.1
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
7.9
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from LaGuardia to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for LaGuardia to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from LaGuardia to Ontario by cabin class
Find flights from LaGuardia to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 7, 2026.
LaGuardia and Ontario flights
Browse other LaGuardia and Ontario flight options. Last updated on July 7, 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 July 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from LaGuardia to Ontario
Discover the top 4 airlines that operate flights from LaGuardia to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$448 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$227 | Average$411 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$266 | Average$488 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$279 | Average$412 | FlexibilityNo cancel fee | On-timeN/A |