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Cheap flights from New York LaGuardia Airport to Los Angeles from $97

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New York LaGuardia Airport to Los Angeles departing on 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from New York LaGuardia Airport to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:55 pm - 11:56 pm
LGA
-
ONT
28h 01m1 stop
Frontier Logo
6:00 am - 10:00 pm
ONT
-
LGA
13h 00m1 stop
$225Frontier
Wed, Jan 7 - Mon, Jan 12
Frontier Logo
10:55 pm - 10:12 pm
LGA
-
ONT
26h 17m1 stop
Frontier Logo
8:31 am - 9:05 pm
ONT
-
LGA
9h 34m1 stop
$232Frontier
Mon, Jan 5 - Sun, Jan 11
Frontier Logo
10:55 pm - 10:12 pm
LGA
-
ONT
26h 17m1 stop
Frontier Logo
8:31 am - 9:05 pm
ONT
-
LGA
9h 34m1 stop
$233Frontier
Mon, Jan 5 - Sun, Jan 11
American Airlines Logo
12:30 pm - 6:45 pm
LGA
-
ONT
9h 15m1 stop
American Airlines Logo
11:59 pm - 11:29 am
ONT
-
LGA
8h 30m1 stop
$236American Airlines
Tue, Feb 10 - Fri, Feb 13
Frontier Logo
10:55 pm - 10:12 pm
LGA
-
ONT
26h 17m1 stop
Frontier Logo
6:00 am - 10:00 pm
ONT
-
LGA
13h 00m1 stop
$238Frontier
Mon, Jan 5 - Fri, Jan 9
American Airlines Logo
9:00 am - 4:05 pm
LGA
-
ONT
10h 05m2 stops
American Airlines Logo
11:59 pm - 11:59 am
ONT
-
LGA
9h 00m1 stop
$240American Airlines
Tue, Feb 10 - Sat, Feb 14
United Airlines Logo
3:29 pm - 8:58 pm
LGA
-
ONT
8h 29m1 stop
United Airlines Logo
5:05 am - 3:46 pm
ONT
-
LGA
7h 41m1 stop
$243United Airlines
Sun, Jan 18 - Wed, Jan 21
American Airlines Logo
9:00 am - 4:05 pm
LGA
-
ONT
10h 05m2 stops
American Airlines Logo
11:59 pm - 11:55 am
ONT
-
LGA
8h 56m2 stops
$245American Airlines
Tue, Jan 20 - Fri, Jan 23
American Airlines Logo
10:30 am - 6:45 pm
LGA
-
ONT
11h 15m2 stops
American Airlines Logo
9:59 am - 10:29 pm
ONT
-
LGA
9h 30m2 stops
$246American Airlines
Sun, Jan 18 - Wed, Jan 21
Frontier Logo
10:55 pm - 10:59 pm
LGA
-
ONT
27h 04m1 stop
Frontier Logo
6:10 am - 10:00 pm
ONT
-
LGA
12h 50m1 stop
$252Frontier
Mon, Jan 12 - Fri, Jan 16

American Airlines flights from New York LaGuardia Airport to Ontario

Our best American Airlines deals on New York LaGuardia Airport to Ontario flight tickets
American Airlines
Feb 10
LGA12:30 pmNew York LaGuardia
9h 15m
1 stop
ONT6:45 pmOntario
Feb 13
ONT11:59 pmOntario
8h 30m
1 stop
LGA11:29 amNew York LaGuardia
$236
Find similar
American Airlines
Feb 10
LGA9:00 amNew York LaGuardia
10h 05m
2 stops
ONT4:05 pmOntario
Feb 14
ONT11:59 pmOntario
9h 00m
1 stop
LGA11:59 amNew York LaGuardia
$240
Find similar
American Airlines
Jan 20
LGA9:00 amNew York LaGuardia
10h 05m
2 stops
ONT4:05 pmOntario
Jan 23
ONT11:59 pmOntario
8h 56m
2 stops
LGA11:55 amNew York LaGuardia
$245
Find similar

Southwest flights from New York LaGuardia Airport to Ontario

Our best Southwest deals on New York LaGuardia Airport to Ontario flight tickets
Southwest
Feb 17
LGA2:05 pmNew York LaGuardia
10h 15m
2 stops
ONT9:20 pmOntario
Feb 24
ONT9:00 pmOntario
9h 10m
2 stops
LGA9:10 amNew York LaGuardia
$295
Find similar
Southwest
Mar 16
LGA4:55 pmNew York LaGuardia
8h 50m
1 stop
ONT10:45 pmOntario
Mar 22
ONT11:35 amOntario
8h 45m
1 stop
LGA11:20 pmNew York LaGuardia
$306
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from New York LaGuardia Airport 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
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

Price

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 1/7

10:55 pm-11:56 pm

1 stop28h 01m

Ontario

Mon 1/12

6:00 am-10:00 pm

1 stop13h 00m

$225

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Mon 1/5

10:55 pm-10:12 pm

1 stop26h 17m

Ontario

Sun 1/11

8:31 am-9:05 pm

1 stop9h 34m

$232

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Mon 1/5

10:55 pm-10:12 pm

1 stop26h 17m

Ontario

Sun 1/11

8:31 am-9:05 pm

1 stop9h 34m

$233

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 2/10

12:30 pm-6:45 pm

1 stop9h 15m

Ontario

Fri 2/13

11:59 pm-11:29 am

1 stop8h 30m

$236

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Mon 1/5

10:55 pm-10:12 pm

1 stop26h 17m

Ontario

Fri 1/9

6:00 am-10:00 pm

1 stop13h 00m

$238

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 2/10

9:00 am-4:05 pm

2 stops10h 05m

Ontario

Sat 2/14

11:59 pm-11:59 am

1 stop9h 00m

$240

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sun 1/18

3:29 pm-8:58 pm

1 stop8h 29m

Ontario

Wed 1/21

5:05 am-3:46 pm

1 stop7h 41m

$243

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 1/20

9:00 am-4:05 pm

2 stops10h 05m

Ontario

Fri 1/23

11:59 pm-11:55 am

2 stops8h 56m

$245

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sun 1/18

10:30 am-6:45 pm

2 stops11h 15m

Ontario

Wed 1/21

9:59 am-10:29 pm

2 stops9h 30m

$246

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Mon 1/12

10:55 pm-10:59 pm

1 stop27h 04m

Ontario

Fri 1/16

6:10 am-10:00 pm

1 stop12h 50m

$252

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from New York LaGuardia Airport to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ontario?

In general, October is the cheapest month to fly from New York LaGuardia Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. If you aren’t able to travel during the month of October, then book flights to Ontario from New York LaGuardia Airport during November instead. Flights to Ontario in November, while not as cheap as those in October, still average around $317.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $302. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from New York LaGuardia Airport to Ontario for around $387.

What is the cheapest time of day to depart on your flight to Ontario?

At noon is the cheapest time of day to fly from New York LaGuardia Airport to Ontario when you can find flight prices for as low as $334. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $362 on average. Flights to Ontario from New York LaGuardia Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have New York LaGuardia Airport to Ontario flight prices changed over time?

As of December 2025, prices for New York LaGuardia Airport to Ontario flights are approximately 98% more expensive when compared to flights at the same time last year.

When to book flights from New York LaGuardia Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from New York LaGuardia Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap New York LaGuardia Airport to Ontario (LGA to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from New York LaGuardia Airport to Ontario

Fastest flight time

8h 15m

Direct flights

None
The fastest flight from New York LaGuardia Airport to Ontario takes 8h 15m
There are no direct flights from New York LaGuardia Airport to Ontario. There are no popular flight routes from New York LaGuardia Airport to Ontario.
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  • How far is New York LaGuardia to Ontario by plane?

    There are 2419.3 mi between New York LaGuardia and Ontario. In terms of flight time, this usually takes a little over 8h 15m.

  • When did momondo last update prices for flights from New York LaGuardia Airport to Ontario Airport?

    Prices for flights from New York LaGuardia Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from New York LaGuardia Airport to Ontario Airport?

  • How old do you have to be to fly from New York LaGuardia Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from New York LaGuardia Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from New York LaGuardia Airport to Ontario?

Best airlines flying from New York LaGuardia Airport to Ontario

Compare and see reviews for airlines that fly from New York LaGuardia Airport to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $170Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
SouthwestPriceFrom $192Free CancellationRating
7.9
4,252 reviews
Search Southwest flights
American AirlinesPriceFrom $266Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.9
8,008 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from New York to Ontario?

It is quick and easy to find New York to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from New York to Ontario with flexible booking policies on momondo?

All flight searches from New York to Ontario on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from New York to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from New York. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from New York to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from New York. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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