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Cheap flights from New York LaGuardia Airport to Los Angeles from $100

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 2/20. 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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Find the cheapest flights from New York LaGuardia Airport to Los Angeles

Cheap round-trip flights

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Multiple Airlines Logo
8:30 pm - 11:27 amLGA-ONT
17h 57m1 stop
Multiple Airlines Logo
6:21 pm - 11:00 amONT-LGA
13h 39m1 stop
$241Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Frontier Logo
10:00 pm - 7:29 amLGA-ONT
12h 29m1 stop
Frontier Logo
8:45 am - 9:00 pmONT-LGA
9h 15m1 stop
$242Frontier
Find Deal
Thu, Nov 13 - Thu, Nov 20
Southwest Logo
7:15 am - 2:30 pmLGA-ONT
10h 15m1 stop
Southwest Logo
10:30 am - 8:15 pmONT-LGA
6h 45m1 stop
$254Southwest
Find Deal
Thu, Dec 4 - Mon, Dec 8
Delta Logo
6:00 am - 11:02 amLGA-ONT
8h 02m1 stop
Delta Logo
7:05 am - 5:41 pmONT-LGA
7h 36m1 stop
$257Delta
Find Deal
Thu, Dec 4 - Wed, Dec 10
Southwest Logo
7:15 am - 2:30 pmLGA-ONT
10h 15m1 stop
Southwest Logo
8:55 pm - 9:00 amONT-LGA
9h 05m2 stops
$259Southwest
Find Deal
Mon, Dec 8 - Tue, Dec 16
Delta Logo
1:56 pm - 11:58 pmLGA-ONT
13h 02m2 stops
Delta Logo
10:25 pm - 10:43 amONT-LGA
9h 18m1 stop
$262Delta
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
10:15 am - 5:43 pmLGA-ONT
10h 28m2 stops
United Airlines Logo
6:00 am - 6:44 pmONT-LGA
9h 44m2 stops
$264United Airlines
Find Deal
Thu, Jan 29 - Tue, Feb 3
American Airlines Logo
9:00 am - 4:19 pmLGA-ONT
10h 19m2 stops
American Airlines Logo
10:40 pm - 9:21 amONT-LGA
7h 41m1 stop
$280American Airlines
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Mon, Feb 23 - Thu, Feb 26
American Airlines Logo
6:00 am - 11:54 amLGA-ONT
8h 54m1 stop
American Airlines Logo
6:10 am - 5:04 pmONT-LGA
7h 54m1 stop
$283American Airlines
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Sat, Nov 15 - Wed, Nov 19
United Airlines Logo
3:36 pm - 9:59 pmLGA-ONT
9h 23m1 stop
United Airlines Logo
5:00 am - 3:45 pmONT-LGA
7h 45m1 stop
$316United Airlines
Find Deal
Wed, Feb 18 - Wed, Feb 25

Frontier flights from New York LaGuardia Airport to Ontario

Our best Frontier deals on New York LaGuardia Airport to Ontario flight tickets
Frontier
Nov 13
LGA10:00 pmNew York LaGuardia
12h 29m
1 stop
ONT7:29 amOntario
Nov 20
ONT8:45 amOntario
9h 15m
1 stop
LGA9:00 pmNew York LaGuardia
$242
Find similar
Frontier
Nov 19
LGA10:00 pmNew York LaGuardia
12h 50m
1 stop
ONT7:50 amOntario
Nov 27
ONT12:58 amOntario
18h 05m
1 stop
LGA10:03 pmNew York LaGuardia
$243
Find similar
Frontier
Dec 17
LGA10:55 pmNew York LaGuardia
28h 04m
1 stop
ONT11:59 pmOntario
Jan 5
ONT6:45 amOntario
12h 15m
1 stop
LGA10:00 pmNew York LaGuardia
$246
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
Dec 4
LGA7:15 amNew York LaGuardia
10h 15m
1 stop
ONT2:30 pmOntario
Dec 8
ONT10:30 amOntario
6h 45m
1 stop
LGA8:15 pmNew York LaGuardia
$254
Find similar
Southwest
Dec 8
LGA7:15 amNew York LaGuardia
10h 15m
1 stop
ONT2:30 pmOntario
Dec 16
ONT8:55 pmOntario
9h 05m
2 stops
LGA9:00 amNew York LaGuardia
$259
Find similar
Southwest
Jan 29
LGA6:00 amNew York LaGuardia
11h 35m
2 stops
ONT2:35 pmOntario
Feb 3
ONT10:40 amOntario
9h 00m
2 stops
LGA10:40 pmNew York LaGuardia
$266
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 November 3, 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

Mon 12/1

8:30 pm-11:27 am

1 stop17h 57m

Ontario

Mon 12/8

6:21 pm-11:00 am

1 stop13h 39m

$241

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 11/13

10:00 pm-7:29 am

1 stop12h 29m

Ontario

Thu 11/20

8:45 am-9:00 pm

1 stop9h 15m

$242

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 12/4

7:15 am-2:30 pm

1 stop10h 15m

Ontario

Mon 12/8

10:30 am-8:15 pm

1 stop6h 45m

$254

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 12/4

6:00 am-11:02 am

1 stop8h 02m

Ontario

Wed 12/10

7:05 am-5:41 pm

1 stop7h 36m

$257

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Mon 12/8

7:15 am-2:30 pm

1 stop10h 15m

Ontario

Tue 12/16

8:55 pm-9:00 am

2 stops9h 05m

$259

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 12/4

1:56 pm-11:58 pm

2 stops13h 02m

Ontario

Mon 12/8

10:25 pm-10:43 am

1 stop9h 18m

$262

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 1/29

10:15 am-5:43 pm

2 stops10h 28m

Ontario

Tue 2/3

6:00 am-6:44 pm

2 stops9h 44m

$264

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Mon 2/23

9:00 am-4:19 pm

2 stops10h 19m

Ontario

Thu 2/26

10:40 pm-9:21 am

1 stop7h 41m

$280

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 11/15

6:00 am-11:54 am

1 stop8h 54m

Ontario

Wed 11/19

6:10 am-5:04 pm

1 stop7h 54m

$283

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 2/18

3:36 pm-9:59 pm

1 stop9h 23m

Ontario

Wed 2/25

5:00 am-3:45 pm

1 stop7h 45m

$316

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, March 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 $326. If you aren’t able to travel during the month of March, 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 March, still average around $337.

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 November 2025, prices for New York LaGuardia Airport to Ontario flights are approximately 8% cheaper 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

Direct flights

None
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 02m.

  • 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
3,117 reviews
Search Frontier flights
SouthwestPriceFrom $192Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
American AirlinesPriceFrom $266Free CancellationRating
7.2
11,036 reviews
Search American Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.9
8,001 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.

An easier way to manage your Ontario trip

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