$150+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ONT
Jun 7 — Jun 141
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 May 8, 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 May 8, 2026.
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/291:55 pm
LGA
- ONT
2 stops12h 39m
Delta
Sat 5/307:05 am
ONT
- LGA
2 stops11h 53m
Delta
Deal found 5/3![Delta logo]()
$287
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:00 am
LGA
- ONT
1 stop7h 42m
Delta
Sun 8/910:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Deal found 5/3![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 5/6. 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 5/276:05 am
LGA
- ONT
1 stop10h 25m
Southwest
Fri 6/512:50 pm
ONT
- LGA
1 stop7h 05m
Southwest
Deal found 5/6![Southwest logo]()
$298
This Delta deal was found by Cheapflights users on 5/7. 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.
Thu 9/2410:00 am
LGA
- ONT
1 stop11h 01m
Delta
Mon 9/2810:59 pm
ONT
- LGA
1 stop8h 48m
Delta
Deal found 5/7![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
LGA
- ONT
1 stop7h 57m
Delta
Tue 5/1910:00 pm
ONT
- LGA
1 stop7h 14m
Delta
Deal found 5/5![Delta logo]()
$302
This Southwest deal was found by Cheapflights users on 5/3. 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.
Fri 5/293:00 pm
LGA
- ONT
2 stops10h 40m
Southwest
Sat 5/3011:55 pm
ONT
- LGA
1 stop8h 25m
Southwest
Deal found 5/3![Southwest logo]()
$303
This Delta deal was found by Cheapflights users on 5/6. 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 5/234:00 pm
LGA
- ONT
1 stop8h 48m
Delta
Wed 5/279:50 am
ONT
- LGA
2 stops10h 54m
Delta
Deal found 5/6![Delta logo]()
$304
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:00 pm
LGA
- ONT
1 stop8h 48m
Delta
Sun 5/246:00 am
ONT
- LGA
2 stops10h 47m
Delta
Deal found 5/5![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:15 am
LGA
- ONT
1 stop10h 55m
Southwest
Sun 5/247:00 am
ONT
- LGA
1 stop12h 20m
Southwest
Deal found 5/4![Southwest logo]()
$309
This Delta deal was found by Cheapflights users on 5/3. 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 Delta 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
Sun 8/2310:00 pm
ONT
- LGA
1 stop7h 10m
Delta
Deal found 5/3![Delta logo]()
$318
This Delta deal was found by Cheapflights users on 5/4. 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.
Wed 6/36:00 am
LGA
- ONT
1 stop7h 57m
Delta
Sun 6/77:05 am
ONT
- LGA
1 stop7h 44m
Delta
Deal found 5/4![Delta logo]()
$320
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 May 8, 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 May 8, 2026.
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:15 am
LGA
- ONT
2 stops10h 50m
Southwest
Sun 5/247:00 am
ONT
- LGA
1 stop12h 20m
Southwest
Deal found 5/4![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:00 am
LGA
- ONT
1 stop7h 57m
Delta
Mon 6/810:00 pm
ONT
- LGA
1 stop7h 11m
Delta
Deal found 5/5![Delta logo]()
$378
This United Airlines deal was found by Cheapflights users on 5/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/113:45 pm
LGA
- ONT
1 stop9h 14m
United Airlines
Tue 8/185:45 am
ONT
- LGA
1 stop10h 20m
United Airlines
Deal found 5/3![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 5/6. 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 8/152:00 pm
LGA
- ONT
1 stop10h 59m
United Airlines
Tue 8/185:45 am
ONT
- LGA
1 stop10h 20m
United Airlines
Deal found 5/6![United Airlines logo]()
$412
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:55 am
LGA
- ONT
2 stops10h 30m
Southwest
Sun 5/247:00 am
ONT
- LGA
1 stop12h 20m
Southwest
Deal found 5/4![Southwest logo]()
$429
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:00 am
LGA
- ONT
1 stop7h 57m
Delta
Sun 5/246:00 am
ONT
- LGA
2 stops10h 00m
Delta
Deal found 5/5![Delta logo]()
$453
This United Airlines deal was found by Cheapflights users on 5/2. 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 6/27:40 am
LGA
- ONT
1 stop8h 04m
United Airlines
Wed 6/36:05 am
ONT
- LGA
1 stop8h 17m
United Airlines
Deal found 5/2![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 5/5. 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.
Tue 6/23:05 pm
LGA
- ONT
2 stops10h 10m
Southwest
Tue 6/95:30 am
ONT
- LGA
2 stops8h 20m
Southwest
Deal found 5/5![Southwest logo]()
$461
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/266:00 am
LGA
- ONT
1 stop7h 40m
Delta
Sat 7/47:05 am
ONT
- LGA
1 stop7h 46m
Delta
Deal found 5/3![Delta logo]()
$509
This Southwest deal was found by Cheapflights users on 5/5. 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.
Sat 7/1812:35 pm
LGA
- ONT
2 stops12h 25m
Southwest
Mon 8/105:15 am
ONT
- LGA
2 stops8h 30m
Southwest
Deal found 5/5![Southwest logo]()
$468
This Delta deal was found by Cheapflights users on 5/6. 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.
Fri 5/226:00 am
LGA
- ONT
1 stop7h 57m
Delta
Mon 5/2510:00 pm
ONT
- LGA
1 stop7h 14m
Delta
Deal found 5/6![Delta logo]()
$539
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:15 am
LGA
- ONT
2 stops10h 50m
Southwest
Mon 5/255:30 am
ONT
- LGA
2 stops8h 20m
Southwest
Deal found 5/4![Southwest logo]()
$542
Last-minute flights from LaGuardia to OntarioDiscover last-minute flight deals from LaGuardia to Ontario. Data last updated May 8, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Ontario. Data last updated May 8, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
LGA
- ONT
1 stop7h 57m
Delta
Tue 5/1910:00 pm
ONT
- LGA
1 stop7h 14m
Delta
Deal found 5/5![Delta logo]()
$302
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:00 pm
LGA
- ONT
1 stop8h 48m
Delta
Sun 5/246:00 am
ONT
- LGA
2 stops10h 47m
Delta
Deal found 5/5![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 5/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:15 am
LGA
- ONT
1 stop10h 55m
Southwest
Sun 5/247:00 am
ONT
- LGA
1 stop12h 20m
Southwest
Deal found 5/4![Southwest logo]()
$309
This Delta deal was found by Cheapflights users on 5/6. 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 5/234:00 pm
LGA
- ONT
1 stop8h 48m
Delta
Wed 5/279:50 am
ONT
- LGA
2 stops10h 54m
Delta
Deal found 5/6![Delta logo]()
$304
This Southwest deal was found by Cheapflights users on 5/6. 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 5/276:05 am
LGA
- ONT
1 stop10h 25m
Southwest
Fri 6/512:50 pm
ONT
- LGA
1 stop7h 05m
Southwest
Deal found 5/6![Southwest logo]()
$298
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:05 am
LGA
- ONT
2 stops11h 12m
Delta
Mon 6/110:00 pm
ONT
- LGA
1 stop9h 46m
Delta
Deal found 5/5![Delta logo]()
$323
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/291:55 pm
LGA
- ONT
2 stops12h 39m
Delta
Sat 5/307:05 am
ONT
- LGA
2 stops11h 53m
Delta
Deal found 5/3![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 5/3. 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.
Fri 5/293:00 pm
LGA
- ONT
2 stops10h 40m
Southwest
Sat 5/3011:55 pm
ONT
- LGA
1 stop8h 25m
Southwest
Deal found 5/3![Southwest logo]()
$303
This American Airlines deal was found by Cheapflights users on 5/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:30 am
LGA
- ONT
1 stop9h 58m
American Airlines
Tue 6/211:59 pm
ONT
- LGA
1 stop7h 31m
American Airlines
Deal found 5/3![American Airlines logo]()
$322
This Delta deal was found by Cheapflights users on 5/4. 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.
Wed 6/36:00 am
LGA
- ONT
1 stop7h 57m
Delta
Sun 6/77:05 am
ONT
- LGA
1 stop7h 44m
Delta
Deal found 5/4![Delta logo]()
$320
This American Airlines deal was found by Cheapflights users on 5/6. 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 6/44:00 pm
LGA
- ONT
1 stop10h 59m
American Airlines
Tue 6/910:00 pm
ONT
- LGA
1 stop7h 59m
American Airlines
Deal found 5/6![American Airlines logo]()
$318
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 May 8, 2026.
Search for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated May 8, 2026.
This Delta deal was found by Cheapflights users on 5/7. 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 6/24:00 pm
LGA
- ONT
1 stop8h 48m
Delta
Deal found 5/7![Delta logo]()
$150
This Frontier deal was found by Cheapflights users on 5/5. 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.
Wed 9/2310:55 pm
LGA
- ONT
1 stop11h 17m
Frontier
Deal found 5/5![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:00 pm
LGA
- ONT
2 stops39h 05m
Frontier
Deal found 5/5![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 5/7. 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.
Mon 10/1910:55 pm
LGA
- ONT
1 stop11h 17m
Frontier
Deal found 5/7![Frontier logo]()
$153
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/144:59 pm
LGA
- ONT
2 stops9h 49m
Delta
Deal found 5/3![Delta logo]()
$154
This Delta deal was found by Cheapflights users on 5/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1612:40 pm
LGA
- ONT
2 stops12h 08m
Delta
Deal found 5/2![Delta logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:00 pm
LGA
- ONT
2 stops22h 52m
Frontier
Deal found 5/5![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/224:56 pm
LGA
- ONT
2 stops20h 09m
Frontier
Deal found 5/3![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:00 pm
LGA
- ONT
2 stops36h 08m
Frontier
Deal found 5/5![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:45 pm
LGA
- ONT
2 stops20h 18m
Frontier
Deal found 5/7![Frontier logo]()
$168
This American Airlines deal was found by Cheapflights users on 5/5. 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 6/45:01 pm
LGA
- ONT
1 stop9h 58m
American Airlines
Deal found 5/5![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 May 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $287 (Delta) |
One-way from | $150 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $502 |
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 May 8, 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 5/20
7:15 am-3:05 pm
2 stops10h 50m
Ontario
Sun 5/24
7:00 am-10:20 pm
1 stop12h 20m
$373
Quickest round-trip
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 5/30
6:00 am-10:57 am
1 stop7h 57m
Ontario
Mon 6/8
10:00 pm-8:11 am
1 stop7h 11m
$378
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 8/11
3:45 pm-9:59 pm
1 stop9h 14m
Ontario
Tue 8/18
5:45 am-7:05 pm
1 stop10h 20m
$408
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 8/15
2:00 pm-9:59 pm
1 stop10h 59m
Ontario
Tue 8/18
5:45 am-7:05 pm
1 stop10h 20m
$412
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Thu 5/21
8:55 am-4:25 pm
2 stops10h 30m
Ontario
Sun 5/24
7:00 am-10:20 pm
1 stop12h 20m
$429
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 6/2
7:40 am-12:44 pm
1 stop8h 04m
Ontario
Wed 6/3
6:05 am-5:22 pm
1 stop8h 17m
$447
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Thu 5/21
6:00 am-10:57 am
1 stop7h 57m
Ontario
Sun 5/24
6:00 am-7:00 pm
2 stops10h 00m
$453
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Tue 6/2
3:05 pm-10:15 pm
2 stops10h 10m
Ontario
Tue 6/9
5:30 am-4:50 pm
2 stops8h 20m
$461
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Sat 7/18
12:35 pm-10:00 pm
2 stops12h 25m
Ontario
Mon 8/10
5:15 am-4:45 pm
2 stops8h 30m
$468
New YorkOntario
LGA - ONT
LGAONT
New York LaGuardia
Fri 6/26
6:00 am-10:40 am
1 stop7h 40m
Ontario
Sat 7/4
7:05 am-5:51 pm
1 stop7h 46m
$509
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 May.
| 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 May 8, 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
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 May 8, 2026.
LaGuardia and Ontario flights
Browse other LaGuardia and Ontario flight options. Last updated on May 8, 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 May 8, 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 May 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$159 | Average$314 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$180 | Average$468 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$192 | Average$447 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$227 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$279 | Average$444 | FlexibilityNo cancel fee | On-timeN/A |