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Cheap flights from Ontario to Las Vegas from $24

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Las Vegas departing on 12/25. 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 Ontario to Las Vegas

Cheap round-trip flights

These are some of the best round-trip flight deals from Ontario to Las Vegas 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 Ontario to Las Vegas.

Cheap last minute flights

Planning a quick getaway from Ontario to Las Vegas? 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 Las Vegas, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Ontario to Las Vegas

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

All round-trip flight deals to Las Vegas

The cheapest plane tickets to Las Vegas found on KAYAK recently.
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
10:36 am - 11:44 amLAS-ONT
1h 08mnonstop
$36Frontier
Find Deal
Fri, Jan 3 - Wed, Jan 8
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
10:36 am - 11:44 amLAS-ONT
1h 08mnonstop
$38Frontier
Find Deal
Fri, Jan 3 - Wed, Jan 8
10:31 pm - 11:51 pmONT-LAS
1h 20mnonstop
10:36 am - 11:44 amLAS-ONT
1h 08mnonstop
$39Frontier
Find Deal
Thu, Jan 2 - Wed, Jan 8
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
11:51 am - 1:00 pmLAS-ONT
1h 09mnonstop
$41Frontier
Find Deal
Wed, Jan 1 - Fri, Jan 3
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
10:36 am - 11:44 amLAS-ONT
1h 08mnonstop
$43Frontier
Find Deal
Fri, Jan 3 - Wed, Jan 8
2:43 pm - 3:53 pmONT-LAS
1h 10mnonstop
7:45 pm - 8:49 pmLAS-ONT
1h 04mnonstop
$44Frontier
Find Deal
Sat, Apr 5 - Tue, Apr 15
10:31 pm - 11:51 pmONT-LAS
1h 20mnonstop
11:51 am - 1:00 pmLAS-ONT
1h 09mnonstop
$45Frontier
Find Deal
Thu, Jan 2 - Fri, Jan 3
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
6:05 am - 7:14 amLAS-ONT
1h 09mnonstop
$48Frontier
Find Deal
Wed, Jan 8 - Fri, Jan 10
12:25 pm - 1:35 pmONT-LAS
1h 10mnonstop
8:40 pm - 9:45 pmLAS-ONT
1h 05mnonstop
$193Southwest
Find Deal
Tue, Jan 7 - Tue, Jan 7
9:00 am - 10:05 amONT-LAS
1h 05mnonstop
8:30 am - 9:35 amLAS-ONT
1h 05mnonstop
$194Southwest
Find Deal
Tue, Jan 14 - Tue, Jan 21
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
$24Frontier
Find Deal
Wed, Dec 25
2:43 pm - 3:58 pmONT-LAS
1h 15mnonstop
$25Frontier
Find Deal
Mon, Mar 17
12:42 pm - 12:05 pmONT-LAS
23h 23m1 stop
Sun, Jan 5
6:25 am - 7:30 amONT-LAS
1h 05mnonstop
$97Southwest
Find Deal
Tue, Feb 18
9:40 am - 1:15 pmONT-LAS
3h 35m1 stop
$106Southwest
Find Deal
Tue, Feb 18
6:15 am - 11:40 amONT-LAS
5h 25m1 stop
$115American Airlines
Find Deal
Tue, Mar 11
11:14 am - 7:26 pmONT-LAS
8h 12m2 stops
$126Alaska Airlines
Find Deal
Tue, Feb 4
6:00 am - 10:45 pmONT-LAS
16h 45m1 stop
$127Alaska Airlines
Find Deal
Sat, Mar 1
9:11 am - 11:03 pmONT-LAS
13h 52m2 stops
Thu, Feb 13
6:10 am - 12:41 pmONT-LAS
6h 31m1 stop
$144American Airlines
Find Deal
Sun, Jan 5
7:05 pm - 8:11 pmONT-LAS
1h 06mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$58Frontier
Find Deal
Thu, Dec 19 - Fri, Dec 20
1:05 pm - 2:19 pmONT-LAS
1h 14mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$59Frontier
Find Deal
Mon, Dec 23 - Mon, Dec 30
7:05 pm - 8:11 pmONT-LAS
1h 06mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$64Frontier
Find Deal
Thu, Dec 19 - Mon, Dec 23
1:05 pm - 2:19 pmONT-LAS
1h 14mnonstop
11:30 am - 12:39 pmLAS-ONT
1h 09mnonstop
$70Frontier
Find Deal
Mon, Dec 23 - Wed, Dec 25
7:05 pm - 8:11 pmONT-LAS
1h 06mnonstop
7:00 am - 8:06 amLAS-ONT
1h 06mnonstop
$71Frontier
Find Deal
Thu, Dec 19 - Sun, Dec 22
1:05 pm - 2:19 pmONT-LAS
1h 14mnonstop
5:02 pm - 6:10 pmLAS-ONT
1h 08mnonstop
$75Frontier
Find Deal
Mon, Dec 23 - Sat, Dec 28
10:19 pm - 11:39 pmONT-LAS
1h 20mnonstop
11:20 am - 12:29 pmLAS-ONT
1h 09mnonstop
$78Frontier
Find Deal
Mon, Dec 23 - Thu, Dec 26
5:32 pm - 6:40 pmONT-LAS
1h 08mnonstop
10:55 am - 12:03 pmLAS-ONT
1h 08mnonstop
$80Frontier
Find Deal
Mon, Dec 23 - Tue, Dec 24
10:31 pm - 11:51 pmONT-LAS
1h 20mnonstop
5:02 pm - 6:10 pmLAS-ONT
1h 08mnonstop
$85Frontier
Find Deal
Sun, Dec 22 - Sat, Dec 28
9:00 am - 10:11 amONT-LAS
1h 11mnonstop
11:51 am - 1:00 pmLAS-ONT
1h 09mnonstop
$92Frontier
Find Deal
Sun, Dec 22 - Fri, Jan 3
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
10:36 am - 11:44 amLAS-ONT
1h 08mnonstop
$36Frontier
Find Deal
Fri, Jan 3 - Wed, Jan 8
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
10:36 am - 11:44 amLAS-ONT
1h 08mnonstop
$38Frontier
Find Deal
Fri, Jan 3 - Wed, Jan 8
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
11:51 am - 1:00 pmLAS-ONT
1h 09mnonstop
$39Frontier
Find Deal
Wed, Jan 1 - Fri, Jan 3
10:39 pm - 11:59 pmONT-LAS
1h 20mnonstop
10:36 am - 11:44 amLAS-ONT
1h 08mnonstop
$43Frontier
Find Deal
Fri, Jan 3 - Wed, Jan 8
2:43 pm - 3:53 pmONT-LAS
1h 10mnonstop
7:45 pm - 8:49 pmLAS-ONT
1h 04mnonstop
$44Frontier
Find Deal
Sat, Apr 5 - Tue, Apr 15
10:31 pm - 11:51 pmONT-LAS
1h 20mnonstop
11:51 am - 1:00 pmLAS-ONT
1h 09mnonstop
$45Frontier
Find Deal
Thu, Jan 2 - Fri, Jan 3
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
6:05 am - 7:14 amLAS-ONT
1h 09mnonstop
$48Frontier
Find Deal
Wed, Jan 8 - Fri, Jan 10
10:19 pm - 11:39 pmONT-LAS
1h 20mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$49Frontier
Find Deal
Mon, Dec 30 - Tue, Dec 31
12:25 pm - 1:35 pmONT-LAS
1h 10mnonstop
8:40 pm - 9:45 pmLAS-ONT
1h 05mnonstop
$193Southwest
Find Deal
Tue, Jan 7 - Tue, Jan 7
9:00 am - 10:05 amONT-LAS
1h 05mnonstop
8:30 am - 9:35 amLAS-ONT
1h 05mnonstop
$194Southwest
Find Deal
Tue, Jan 14 - Tue, Jan 21

Frontier flights from Ontario to Las Vegas

Our best Frontier deals on Ontario to Las Vegas flight tickets
Frontier
Jan 3
ONT10:39 pmOntario
1h 20m
LAS11:59 pmLas Vegas Harry Reid Intl
Jan 8
LAS10:36 amLas Vegas Harry Reid Intl
1h 08m
ONT11:44 amOntario
Frontier
Jan 3
ONT10:39 pmOntario
1h 20m
LAS11:59 pmLas Vegas Harry Reid Intl
Jan 8
LAS10:36 amLas Vegas Harry Reid Intl
1h 08m
ONT11:44 amOntario
Frontier
Jan 2
ONT10:31 pmOntario
1h 20m
LAS11:51 pmLas Vegas Harry Reid Intl
Jan 8
LAS10:36 amLas Vegas Harry Reid Intl
1h 08m
ONT11:44 amOntario

Southwest flights from Ontario to Las Vegas

Our best Southwest deals on Ontario to Las Vegas flight tickets
Southwest
Jan 7
ONT12:25 pmOntario
1h 10m
LAS1:35 pmLas Vegas Harry Reid Intl
Jan 7
LAS8:40 pmLas Vegas Harry Reid Intl
1h 05m
ONT9:45 pmOntario
Southwest
Jan 14
ONT9:00 amOntario
1h 05m
LAS10:05 amLas Vegas Harry Reid Intl
Jan 21
LAS8:30 amLas Vegas Harry Reid Intl
1h 05m
ONT9:35 amOntario

See travel insights to Las Vegas from

How to get the cheapest flight ticket from Ontario to Las Vegas

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 Las Vegas?

The month of January is, on average, the cheapest month to fly to Las Vegas from Ontario, with most prices found around $88. The month of April is another great option to travel to Las Vegas, with average flight prices from Ontario averaging around $90.

What is the cheapest day to depart on your flight to Las Vegas?

Our data shows that Tuesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $69. Flights from Ontario to Las Vegas on a Friday will generally be more expensive and average around $139. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

The cheapest time of day to fly to Las Vegas is at noon when flights can be purchased for as low as $93. Flights to Las Vegas are more costly in the afternoon, with an average ticket price of $114. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Las Vegas?

Most flyers found that booking tickets 41 days in advance of their planned departure date is the best time to get cheap flights to Las Vegas. During this timeframe, flight prices are around $94. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $62.

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

There are 2 cabin classes available to choose from on Ontario to Las Vegas Harry Reid Intl 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 Ontario to Las Vegas flights?

You could potentially save up to 188% on your flight if you consider stops on a Ontario to Las Vegas flight.

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

As of December 2024, prices for Ontario to Las Vegas flights are approximately 0% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Las Vegas

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

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

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

Best Price Found

$24

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Ontario in the past 72 hours is $24. The best round-trip flight deal from Ontario to Las Vegas found on momondo in the last 72 hours is $36.
The fastest flight from Ontario to Las Vegas takes 1h 05m
Direct flights go from Ontario to Las Vegas every day.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)

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

    The distance between Ontario and Las Vegas Harry Reid Intl is about 203.5 mi. In terms of flight time, this usually takes a little over 1h 05m.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The necessary travel and health documents for your Las Vegas Harry Reid Intl 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 plane model from Ontario to Las Vegas?

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


Best airlines flying from Ontario to Las Vegas

Compare and see reviews for airlines that fly from Ontario to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $37Free CancellationRating
6.3
8,119 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $38Free CancellationRating
8.0
9,554 reviews
Search Alaska Airlines flights
FrontierPriceFrom $41Free CancellationRating
6.1
3,479 reviews
Search Frontier flights
DeltaPriceFrom $44Free CancellationRating
8.0
8,604 reviews
Search Delta flights
Ravn AlaskaPriceFrom $130Free CancellationRating
8.4
12 reviews
Search Ravn Alaska flights
SouthwestPriceFrom $177Free CancellationRating
8.1
4,848 reviews
Search Southwest flights
American AirlinesPriceFrom $199Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Southwest Flights From Ontario to Las Vegas

    Across 15 Southwest flights from Ontario to Las Vegas this week, the average price was $249, with the best Southwest deals starting from $177 round-trip. 4,848 users have rated Southwest on momondo, with an average score of 8.1/10.

  • Frontier Flights From Ontario to Las Vegas

    Frontier (6.1/10 from 3,479 reviews) operates around 2 flights from Ontario to Las Vegas in any given week. The average Frontier airfare for this route is around $91, with deals from around $41 rare but found on momondo. Referenced prices are for round-trip Ontario to Las Vegas flight searches in the last 72 hours.


Why use momondo?

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

Finding the right flight to Las Vegas from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Las Vegas quick and easy, saving you time and money.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Las Vegas.

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

Yes momondo offers price alerts on flights to Las Vegas from Ontario. 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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