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Cheap flights from Las Vegas to Ontario from $19

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 Ontario departing on 12/31. 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 Las Vegas to Los Angeles

Cheap round-trip flights

These are some of the best round-trip flight deals from Las Vegas to Los Angeles that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Las Vegas to Los Angeles.

Cheap last minute flights

Planning a quick getaway from Las Vegas to Los Angeles? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Los Angeles, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Las Vegas to Los Angeles

Find recent round-trip train or bus tickets from Las Vegas to Los Angeles.

All round-trip flight deals to Los Angeles

The cheapest plane tickets to Los Angeles found on KAYAK recently.
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
5:32 pm - 6:40 pmONT-LAS
1h 08mnonstop
$38Frontier
Find Deal
Fri, Jan 3 - Mon, Jan 6
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
9:00 am - 10:11 amONT-LAS
1h 11mnonstop
$39Frontier
Find Deal
Fri, Jan 3 - Sun, Jan 5
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
10:31 pm - 11:51 pmONT-LAS
1h 20mnonstop
$40Frontier
Find Deal
Fri, Jan 3 - Sun, Jan 5
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
7:05 pm - 8:11 pmONT-LAS
1h 06mnonstop
$43Frontier
Find Deal
Fri, Jan 3 - Sun, Jan 5
8:30 am - 9:35 amLAS-ONT
1h 05mnonstop
6:35 pm - 7:40 pmONT-LAS
1h 05mnonstop
$184Southwest
Find Deal
Tue, Jan 14 - Tue, Jan 21
1:50 pm - 3:05 pmLAS-ONT
1h 15mnonstop
3:50 pm - 5:00 pmONT-LAS
1h 10mnonstop
$193Southwest
Find Deal
Thu, Jan 9 - Tue, Jan 14
4:09 pm - 11:44 pmLAS-ONT
7h 35m1 stop
6:00 am - 3:40 pmONT-LAS
9h 40m2 stops
Thu, Jan 9 - Tue, Jan 14
3:59 pm - 10:32 pmLAS-ONT
6h 33m1 stop
4:05 pm - 9:51 amONT-LAS
17h 46m1 stop
$243Delta
Find Deal
Sat, Mar 1 - Tue, Mar 4
7:50 am - 11:24 pmLAS-ONT
15h 34m1 stop
6:00 am - 6:59 pmONT-LAS
12h 59m1 stop
$252Alaska Airlines
Find Deal
Fri, Feb 28 - Tue, Mar 4
1:25 pm - 10:38 amLAS-ONT
21h 13m1 stop
6:00 am - 7:02 pmONT-LAS
13h 02m2 stops
$257Alaska Airlines
Find Deal
Tue, Jan 21 - Tue, Jan 28
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$19Frontier
Find Deal
Tue, Dec 31
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$20Frontier
Find Deal
Tue, Dec 31
6:00 am - 7:05 amLAS-ONT
1h 05mnonstop
$21Frontier
Find Deal
Thu, Apr 3
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$22Frontier
Find Deal
Mon, Jan 6
8:30 am - 9:35 amLAS-ONT
1h 05mnonstop
$92Southwest
Find Deal
Tue, Jan 14
1:50 pm - 3:05 pmLAS-ONT
1h 15mnonstop
$101Southwest
Find Deal
Thu, Jan 9
1:25 pm - 8:13 pmLAS-ONT
6h 48m1 stop
$121Alaska Airlines
Find Deal
Tue, Feb 4
7:53 am - 5:04 pmLAS-ONT
9h 11m2 stops
$126Alaska Airlines
Find Deal
Tue, Jan 28
5:42 am - 9:12 amLAS-ONT
3h 30m1 stop
$144American Airlines
Find Deal
Sun, Jan 5
12:29 pm - 6:24 pmLAS-ONT
5h 55m1 stop
$175American Airlines
Find Deal
Tue, Jan 7
10:55 am - 12:03 pmLAS-ONT
1h 08mnonstop
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
$80Frontier
Find Deal
Tue, Dec 24 - Tue, Dec 31
11:48 am - 12:57 pmLAS-ONT
1h 09mnonstop
10:19 pm - 11:39 pmONT-LAS
1h 20mnonstop
$90Frontier
Find Deal
Sat, Dec 28 - Mon, Dec 30
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
$91Frontier
Find Deal
Fri, Dec 27 - Tue, Dec 31
10:35 pm - 11:35 pmLAS-ONT
1h 00mnonstop
3:50 pm - 5:00 pmONT-LAS
1h 10mnonstop
$376Southwest
Find Deal
Thu, Dec 26 - Tue, Jan 7
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
10:40 am - 8:29 pmONT-LAS
9h 49m1 stop
Tue, Dec 24 - Wed, Dec 25
1:55 pm - 6:55 pmLAS-ONT
5h 00m1 stop
9:45 am - 2:30 pmONT-LAS
4h 45m1 stop
$492Southwest
Find Deal
Tue, Dec 24 - Mon, Dec 30
1:31 pm - 6:25 pmLAS-ONT
4h 54m1 stop
7:30 pm - 10:41 pmONT-LAS
3h 11m1 stop
$561American Airlines
Find Deal
Thu, Dec 26 - Thu, Dec 26
9:24 pm - 9:45 amLAS-ONT
12h 21m1 stop
6:00 am - 3:40 pmONT-LAS
9h 40m2 stops
$587Alaska Airlines
Find Deal
Thu, Dec 26 - Tue, Jan 7
5:42 am - 9:12 amLAS-ONT
3h 30m1 stop
12:46 pm - 9:00 pmONT-LAS
8h 14m2 stops
$781American Airlines
Find Deal
Fri, Dec 27 - Mon, Dec 30
4:40 pm - 9:45 amLAS-ONT
17h 05m1 stop
10:40 am - 8:29 pmONT-LAS
9h 49m1 stop
$832Alaska Airlines
Find Deal
Sat, Dec 28 - Mon, Dec 30
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
5:32 pm - 6:40 pmONT-LAS
1h 08mnonstop
$38Frontier
Find Deal
Fri, Jan 3 - Mon, Jan 6
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
9:00 am - 10:11 amONT-LAS
1h 11mnonstop
$39Frontier
Find Deal
Fri, Jan 3 - Sun, Jan 5
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
10:31 pm - 11:51 pmONT-LAS
1h 20mnonstop
$40Frontier
Find Deal
Fri, Jan 3 - Sun, Jan 5
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
7:05 pm - 8:11 pmONT-LAS
1h 06mnonstop
$43Frontier
Find Deal
Fri, Jan 3 - Sun, Jan 5
1:53 pm - 3:04 pmLAS-ONT
1h 11mnonstop
10:34 am - 11:43 amONT-LAS
1h 09mnonstop
$44Frontier
Find Deal
Thu, Apr 3 - Sun, Apr 6
6:20 am - 7:26 amLAS-ONT
1h 06mnonstop
10:34 am - 11:48 amONT-LAS
1h 14mnonstop
$45Frontier
Find Deal
Mon, Mar 17 - Mon, Mar 17
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
9:00 am - 10:11 amONT-LAS
1h 11mnonstop
$47Frontier
Find Deal
Fri, Jan 3 - Sun, Jan 5
2:10 pm - 3:19 pmLAS-ONT
1h 09mnonstop
10:34 am - 11:48 amONT-LAS
1h 14mnonstop
$48Frontier
Find Deal
Wed, Feb 26 - Mon, Mar 10
8:30 am - 9:35 amLAS-ONT
1h 05mnonstop
6:35 pm - 7:40 pmONT-LAS
1h 05mnonstop
$184Southwest
Find Deal
Tue, Jan 14 - Tue, Jan 21
1:50 pm - 3:05 pmLAS-ONT
1h 15mnonstop
3:50 pm - 5:00 pmONT-LAS
1h 10mnonstop
$193Southwest
Find Deal
Thu, Jan 9 - Tue, Jan 14

Frontier flights from Las Vegas to Ontario

Our best Frontier deals on Las Vegas to Ontario flight tickets
Frontier
Jan 3
LAS6:00 amLas Vegas Harry Reid Intl
1h 09m
ONT7:09 amOntario
Jan 6
ONT5:32 pmOntario
1h 08m
LAS6:40 pmLas Vegas Harry Reid Intl
Frontier
Jan 3
LAS6:00 amLas Vegas Harry Reid Intl
1h 09m
ONT7:09 amOntario
Jan 5
ONT9:00 amOntario
1h 11m
LAS10:11 amLas Vegas Harry Reid Intl
Frontier
Jan 3
LAS6:00 amLas Vegas Harry Reid Intl
1h 09m
ONT7:09 amOntario
Jan 5
ONT10:31 pmOntario
1h 20m
LAS11:51 pmLas Vegas Harry Reid Intl

Alaska Airlines flights from Las Vegas to Ontario

Our best Alaska Airlines deals on Las Vegas to Ontario flight tickets
Alaska Airlines
Feb 28
LAS7:50 amLas Vegas Harry Reid Intl
15h 34m
1 stop
ONT11:24 pmOntario
Mar 4
ONT6:00 amOntario
12h 59m
1 stop
LAS6:59 pmLas Vegas Harry Reid Intl
Alaska Airlines
Jan 21
LAS1:25 pmLas Vegas Harry Reid Intl
21h 13m
1 stop
ONT10:38 amOntario
Jan 28
ONT6:00 amOntario
13h 02m
2 stops
LAS7:02 pmLas Vegas Harry Reid Intl
Alaska Airlines
Jan 23
LAS6:00 amLas Vegas Harry Reid Intl
12h 13m
2 stops
ONT6:13 pmOntario
Jan 25
ONT6:00 amOntario
15h 00m
1 stop
LAS9:00 pmLas Vegas Harry Reid Intl

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 $56. If you aren’t able to travel during the month of September, then book flights to Ontario from Las Vegas during April instead. Flights to Ontario in April, while not as cheap as those in September, still average around $58.

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 $58. 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 $97.

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 $58. 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 afternoon when prices are $82 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?

Most flyers found that booking tickets 38 days in advance of their planned departure date is the best time to get cheap flights to Ontario. During this timeframe, flight prices are around $71. However, in the past 72 hours, people saw flights from Las Vegas for as low as $38.

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.

Can stopping save me money on Las Vegas to Ontario flights?

You could potentially save up to 142% on your flight if you consider stops on a Las Vegas to Ontario flight.

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

As of December 2024, prices for Las Vegas to Ontario flights are approximately 0% 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

$19

Fastest flight time

1h 03m

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 $19. The best round-trip flight deal from Las Vegas to Ontario found on momondo in the last 72 hours is $38.
The fastest flight from Las Vegas to Ontario takes 1h 03m
Direct flights go from Las Vegas to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)

  • 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 $27Free CancellationRating
6.3
8,113 reviews
Search Spirit Airlines flights
FrontierPriceFrom $38Free CancellationRating
6.1
3,469 reviews
Search Frontier flights
SouthwestPriceFrom $186Free CancellationRating
8.1
4,780 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 $258, with the best Southwest deals starting from $186 round-trip. 4,780 users have rated Southwest on momondo, with an average score of 8.1/10.

  • Frontier Flights From Las Vegas to Ontario

    Frontier (6.1/10 from 3,469 reviews) operates around 13 flights from Las Vegas to Ontario in any given week. The average Frontier airfare for this route is around $69, 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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