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Cheap flights from Las Vegas to Los Angeles from $31

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Los Angeles departing on 12/11. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:45 pm - 7:53 pmLAS-ONT
1h 08mnonstop
Frontier Logo
7:35 pm - 8:44 pmONT-LAS
1h 09mnonstop
$57Frontier
Find Deal
fre, jan 30 - lör, feb 7
Frontier Logo
3:14 pm - 4:20 pmLAS-ONT
1h 06mnonstop
Frontier Logo
3:21 pm - 4:27 pmONT-LAS
1h 06mnonstop
$58Frontier
Find Deal
tors, jan 8 - lör, jan 10
Frontier Logo
8:13 pm - 9:17 pmLAS-ONT
1h 04mnonstop
Frontier Logo
6:15 am - 7:22 amONT-LAS
1h 07mnonstop
$60Frontier
Find Deal
lör, dec 13 - tis, dec 16
Frontier Logo
8:13 pm - 9:17 pmLAS-ONT
1h 04mnonstop
Frontier Logo
6:15 am - 7:22 amONT-LAS
1h 07mnonstop
$61Frontier
Find Deal
lör, dec 13 - sön, dec 14
Frontier Logo
12:02 pm - 1:10 pmLAS-ONT
1h 08mnonstop
Frontier Logo
5:18 pm - 6:27 pmONT-LAS
1h 09mnonstop
$62Frontier
Find Deal
fre, dec 12 - mån, dec 15
Frontier Logo
8:10 am - 9:18 amLAS-ONT
1h 08mnonstop
Frontier Logo
7:35 pm - 8:44 pmONT-LAS
1h 09mnonstop
$70Frontier
Find Deal
sön, jan 25 - lör, jan 31
Frontier Logo
6:30 am - 7:36 amLAS-ONT
1h 06mnonstop
Frontier Logo
10:29 pm - 11:40 pmONT-LAS
1h 11mnonstop
$71Frontier
Find Deal
sön, jan 11 - fre, jan 16
Frontier Logo
12:02 pm - 1:10 pmLAS-ONT
1h 08mnonstop
Frontier Logo
5:18 pm - 6:27 pmONT-LAS
1h 09mnonstop
$72Frontier
Find Deal
fre, dec 5 - mån, dec 8
Frontier Logo
3:56 pm - 5:02 pmLAS-ONT
1h 06mnonstop
Frontier Logo
8:30 am - 9:36 amONT-LAS
1h 06mnonstop
$73Frontier
Find Deal
fre, feb 27 - tis, mar 3
Frontier Logo
4:13 pm - 5:22 pmLAS-ONT
1h 09mnonstop
Frontier Logo
6:00 am - 7:07 amONT-LAS
1h 07mnonstop
$74Frontier
Find Deal
tors, dec 25 - mån, dec 29

Frontier flights from Las Vegas to Ontario

Our best Frontier deals on Las Vegas to Ontario flight tickets
Frontier
Jan 30
LAS6:45 pmLas Vegas Harry Reid Intl
1h 08m
ONT7:53 pmOntario
Feb 7
ONT7:35 pmOntario
1h 09m
LAS8:44 pmLas Vegas Harry Reid Intl
$57
Find similar
Frontier
Jan 8
LAS6:05 pmLas Vegas Harry Reid Intl
1h 07m
ONT7:12 pmOntario
Jan 11
ONT2:34 pmOntario
1h 09m
LAS3:43 pmLas Vegas Harry Reid Intl
$58
Find similar
Frontier
Dec 13
LAS8:13 pmLas Vegas Harry Reid Intl
1h 04m
ONT9:17 pmOntario
Dec 16
ONT6:15 amOntario
1h 07m
LAS7:22 amLas Vegas Harry Reid Intl
$60
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Las Vegas 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 16, 2025.
Use the filters below to find and compare flights from Las Vegas to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

fre 1/30

6:45 pm-7:53 pm

Nonstop1h 08m

Ontario

lör 2/7

7:35 pm-8:44 pm

Nonstop1h 09m

$57

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

tors 1/8

3:14 pm-4:20 pm

Nonstop1h 06m

Ontario

lör 1/10

3:21 pm-4:27 pm

Nonstop1h 06m

$58

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

lör 12/13

8:13 pm-9:17 pm

Nonstop1h 04m

Ontario

tis 12/16

6:15 am-7:22 am

Nonstop1h 07m

$60

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

lör 12/13

8:13 pm-9:17 pm

Nonstop1h 04m

Ontario

sön 12/14

6:15 am-7:22 am

Nonstop1h 07m

$61

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

fre 12/12

12:02 pm-1:10 pm

Nonstop1h 08m

Ontario

mån 12/15

5:18 pm-6:27 pm

Nonstop1h 09m

$62

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

sön 1/25

8:10 am-9:18 am

Nonstop1h 08m

Ontario

lör 1/31

7:35 pm-8:44 pm

Nonstop1h 09m

$70

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

sön 1/11

6:30 am-7:36 am

Nonstop1h 06m

Ontario

fre 1/16

10:29 pm-11:40 pm

Nonstop1h 11m

$71

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

fre 12/5

12:02 pm-1:10 pm

Nonstop1h 08m

Ontario

mån 12/8

5:18 pm-6:27 pm

Nonstop1h 09m

$72

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

fre 2/27

3:56 pm-5:02 pm

Nonstop1h 06m

Ontario

tis 3/3

8:30 am-9:36 am

Nonstop1h 06m

$73

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

tors 12/25

4:13 pm-5:22 pm

Nonstop1h 09m

Ontario

mån 12/29

6:00 am-7:07 am

Nonstop1h 07m

$74

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Las Vegas 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, February is the cheapest month to fly from Las Vegas to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $69. If you aren’t able to travel during the month of February, then book flights to Ontario from Las Vegas during January instead. Flights to Ontario in January, while not as cheap as those in February, still average around $70.

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 Thursday when prices can be found for as low as $84. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Las Vegas to Ontario for around $123.

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

In the morning is the cheapest time of day to fly from Las Vegas to Ontario when you can find flight prices for as low as $92. Flying to Ontario in the morning 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 afternoon when prices are $101 on average. Flights to Ontario from Las Vegas in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Las Vegas Harry Reid Intl to Ontario flight route?

Fly from Las Vegas Harry Reid Intl to Ontario for the best Las Vegas Harry Reid Intl - Ontario flight prices

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $95 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Las Vegas for as low as $35 on momondo.

What cabin class options are available on Las Vegas Harry Reid Intl to Ontario flights?

There is only 1 cabin class available to choose from on Las Vegas Harry Reid Intl to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Las Vegas to Ontario flight prices changed over time?

As of November 2025, prices for Las Vegas to Ontario flights are approximately 35% more expensive when compared to flights at the same time last year.

When to book flights from Las Vegas to Ontario

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

Cheap Las Vegas to Ontario (LAS to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Ontario

Best Price Found

$89

Fastest flight time

1h 00m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Las Vegas in the past 72 hours is $89. The best round-trip flight deal from Las Vegas to Ontario found on momondo in the last 72 hours is $67.
The fastest flight from Las Vegas to Ontario takes 1h 00m
Direct flights go from Las Vegas to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
Search flight deals

  • How far is Las Vegas Harry Reid Intl to Ontario by plane?

    There are 203.5 mi between Las Vegas Harry Reid Intl and Ontario. 1h 04m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Ontario Airport?

    Prices for flights from Las Vegas Harry Reid Intl Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Ontario Airport?

  • How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Las Vegas Harry Reid Intl Airport to Ontario Airport.

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

    The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Las Vegas to Ontario?

  • What is the most popular airline from Las Vegas to Ontario?

Best airlines flying from Las Vegas to Ontario

Compare and see reviews for airlines that fly from Las Vegas to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $41Free CancellationRating
5.8
3,108 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $44Free CancellationRating
6.3
8,140 reviews
Search Spirit Airlines flights
SouthwestPriceFrom $84Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

  • Southwest Flights From Las Vegas to Ontario

    Across 12 Southwest flights from Las Vegas to Ontario this week, the average price was $226, with the best Southwest deals starting from $84 round-trip. 4,244 users have rated Southwest on momondo, with an average score of 8.0/10.

  • Frontier Flights From Las Vegas to Ontario

    Frontier (5.8/10 from 3,108 reviews) operates around 12 flights from Las Vegas to Ontario in any given week. The average Frontier airfare for this route is around $93, with deals from around $41 rare but found on momondo. Referenced prices are for round-trip Las Vegas to Ontario flight searches in the last 72 hours.

Why use momondo?

Why should I use momondo to find a flight deal from Las Vegas to Ontario?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Las Vegas to Ontario. momondo saves you time and could save you money on your trip.

Can I find flights from Las Vegas to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Las Vegas to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Las Vegas to Ontario?

Once you have performed a search for Las Vegas to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Las Vegas to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
tis 12/16
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