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Cheap flights from Las Vegas to Los Angeles from $26

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 8/27. 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

Frontier Logo
6:10 am - 7:17 amLAS-ONT
1h 07mnonstop
Frontier Logo
1:37 pm - 2:54 pmONT-LAS
1h 17mnonstop
$54Frontier
Find Deal
Fri, Sep 5 - Sat, Sep 6
Frontier Logo
10:27 am - 11:43 amLAS-ONT
1h 16mnonstop
Frontier Logo
10:28 pm - 11:44 pmONT-LAS
1h 16mnonstop
$55Frontier
Find Deal
Fri, Sep 12 - Sun, Sep 14
Frontier Logo
3:07 pm - 4:18 pmLAS-ONT
1h 11mnonstop
Frontier Logo
6:00 am - 7:13 amONT-LAS
1h 13mnonstop
$56Frontier
Find Deal
Tue, Aug 26 - Thu, Aug 28
Frontier Logo
7:33 pm - 8:42 pmLAS-ONT
1h 09mnonstop
Frontier Logo
6:05 am - 7:16 amONT-LAS
1h 11mnonstop
$57Frontier
Find Deal
Sat, Oct 18 - Mon, Oct 20
Frontier Logo
11:27 am - 12:43 pmLAS-ONT
1h 16mnonstop
Frontier Logo
6:05 am - 7:16 amONT-LAS
1h 11mnonstop
$58Frontier
Find Deal
Sat, Oct 4 - Thu, Oct 9
Frontier Logo
11:27 am - 12:43 pmLAS-ONT
1h 16mnonstop
Frontier Logo
10:28 pm - 11:44 pmONT-LAS
1h 16mnonstop
$66Frontier
Find Deal
Sat, Sep 27 - Sun, Sep 28
Frontier Logo
3:07 pm - 4:18 pmLAS-ONT
1h 11mnonstop
Frontier Logo
8:00 am - 9:11 amONT-LAS
1h 11mnonstop
$71Frontier
Find Deal
Wed, Sep 3 - Wed, Sep 10
Frontier Logo
10:21 am - 11:31 amLAS-ONT
1h 10mnonstop
Frontier Logo
5:38 pm - 6:52 pmONT-LAS
1h 14mnonstop
$76Frontier
Find Deal
Thu, Aug 28 - Thu, Aug 28
Southwest Logo
7:10 am - 8:15 amLAS-ONT
1h 05mnonstop
Southwest Logo
4:00 pm - 5:05 pmONT-LAS
1h 05mnonstop
$114Southwest
Find Deal
Thu, Sep 11 - Sun, Sep 14
Southwest Logo
5:40 am - 12:30 pmLAS-ONT
6h 50m2 stops
Southwest Logo
8:10 am - 9:15 amONT-LAS
1h 05mnonstop
$129Southwest
Find Deal
Sat, Sep 6 - Sun, Sep 7

Southwest flights from Las Vegas to Ontario

Our best Southwest deals on Las Vegas to Ontario flight tickets
Southwest
Sep 11
LAS7:10 amLas Vegas Harry Reid Intl
1h 05m
ONT8:15 amOntario
Sep 14
ONT4:00 pmOntario
1h 05m
LAS5:05 pmLas Vegas Harry Reid Intl
$114
Find similar
Southwest
Sep 6
LAS5:40 amLas Vegas Harry Reid Intl
6h 50m
2 stops
ONT12:30 pmOntario
Sep 7
ONT8:10 amOntario
1h 05m
LAS9:15 amLas Vegas Harry Reid Intl
$129
Find similar
Southwest
Sep 11
LAS9:55 amLas Vegas Harry Reid Intl
5h 30m
1 stop
ONT3:25 pmOntario
Sep 14
ONT8:35 pmOntario
3h 10m
1 stop
LAS11:45 pmLas Vegas Harry Reid Intl
$134
Find similar

Frontier flights from Las Vegas to Ontario

Our best Frontier deals on Las Vegas to Ontario flight tickets
Frontier
Sep 5
LAS6:10 amLas Vegas Harry Reid Intl
1h 07m
ONT7:17 amOntario
Sep 6
ONT1:37 pmOntario
1h 17m
LAS2:54 pmLas Vegas Harry Reid Intl
$54
Find similar
Frontier
Sep 12
LAS10:27 amLas Vegas Harry Reid Intl
1h 16m
ONT11:43 amOntario
Sep 14
ONT10:28 pmOntario
1h 16m
LAS11:44 pmLas Vegas Harry Reid Intl
$55
Find similar
Frontier
Aug 22
LAS6:30 amLas Vegas Harry Reid Intl
1h 03m
ONT7:33 amOntario
Aug 24
ONT10:25 amOntario
1h 12m
LAS11:37 amLas Vegas Harry Reid Intl
$56
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 August 14, 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

Fri 9/5

6:10 am-7:17 am

Nonstop1h 07m

Ontario

Sat 9/6

1:37 pm-2:54 pm

Nonstop1h 17m

$54

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Fri 9/12

10:27 am-11:43 am

Nonstop1h 16m

Ontario

Sun 9/14

10:28 pm-11:44 pm

Nonstop1h 16m

$55

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 8/26

3:07 pm-4:18 pm

Nonstop1h 11m

Ontario

Thu 8/28

6:00 am-7:13 am

Nonstop1h 13m

$56

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 10/18

7:33 pm-8:42 pm

Nonstop1h 09m

Ontario

Mon 10/20

6:05 am-7:16 am

Nonstop1h 11m

$57

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 10/4

11:27 am-12:43 pm

Nonstop1h 16m

Ontario

Thu 10/9

6:05 am-7:16 am

Nonstop1h 11m

$58

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 9/27

11:27 am-12:43 pm

Nonstop1h 16m

Ontario

Sun 9/28

10:28 pm-11:44 pm

Nonstop1h 16m

$66

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 9/3

3:07 pm-4:18 pm

Nonstop1h 11m

Ontario

Wed 9/10

8:00 am-9:11 am

Nonstop1h 11m

$71

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Thu 8/28

10:21 am-11:31 am

Nonstop1h 10m

Ontario

Thu 8/28

5:38 pm-6:52 pm

Nonstop1h 14m

$76

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Thu 9/11

7:10 am-8:15 am

Nonstop1h 05m

Ontario

Sun 9/14

4:00 pm-5:05 pm

Nonstop1h 05m

$114

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 9/6

5:40 am-12:30 pm

2 stops6h 50m

Ontario

Sun 9/7

8:10 am-9:15 am

Nonstop1h 05m

$129

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

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, September 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 $57. If you aren’t able to travel during the month of September, then book flights to Ontario from Las Vegas during October instead. Flights to Ontario in October, while not as cheap as those in September, still average around $62.

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 Tuesday when prices can be found for as low as $73. 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 $106.

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 Las Vegas to Ontario when you can find flight prices for as low as $72. 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 evening when prices are $98 on average. Flights to Ontario from Las Vegas in the evening 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 $85 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 are 1 cabin classes 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 August 2025, prices for Las Vegas to Ontario flights are approximately 14% cheaper 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

$26

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 $26. The best round-trip flight deal from Las Vegas to Ontario found on momondo in the last 72 hours is $54.
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 03m 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
Spirit AirlinesPriceFrom $26Free CancellationRating
6.3
8,045 reviews
Search Spirit Airlines flights
FrontierPriceFrom $38Free CancellationRating
5.8
3,219 reviews
Search Frontier flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

  • Southwest Flights From Las Vegas to Ontario

    Across 23 Southwest flights from Las Vegas to Ontario this week, the average price was $230, with the best Southwest deals starting from $97 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 3,219 reviews) operates around 8 flights from Las Vegas to Ontario in any given week. The average Frontier airfare for this route is around $85, with deals from around $38 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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