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Cheap flights from Ontario to Las Vegas 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 Ontario to Las Vegas 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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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.
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
10:00 am - 11:08 amLAS-ONT
1h 08mnonstop
$36Frontier
Find Deal
Wed, Dec 11 - Fri, Dec 13
1:47 pm - 3:01 pmONT-LAS
1h 14mnonstop
7:00 am - 8:06 amLAS-ONT
1h 06mnonstop
$37Frontier
Find Deal
Mon, Dec 16 - Thu, Dec 19
12:53 pm - 1:59 pmONT-LAS
1h 06mnonstop
7:00 am - 8:06 amLAS-ONT
1h 06mnonstop
$38Frontier
Find Deal
Tue, Dec 17 - Thu, Dec 19
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
10:40 am - 11:48 amLAS-ONT
1h 08mnonstop
$39Frontier
Find Deal
Wed, Dec 11 - Thu, Dec 12
10:59 pm - 12:19 amONT-LAS
1h 20mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$42Frontier
Find Deal
Tue, Dec 17 - Tue, Dec 24
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
6:55 pm - 7:59 pmLAS-ONT
1h 04mnonstop
$43Frontier
Find Deal
Wed, Dec 11 - Thu, Dec 12
12:53 pm - 1:59 pmONT-LAS
1h 06mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$44Frontier
Find Deal
Tue, Dec 17 - Fri, Dec 20
2:33 pm - 3:45 pmONT-LAS
1h 12mnonstop
2:05 pm - 3:14 pmLAS-ONT
1h 09mnonstop
$45Frontier
Find Deal
Wed, Dec 18 - Wed, Dec 25
6:45 am - 7:50 amONT-LAS
1h 05mnonstop
7:50 am - 8:55 amLAS-ONT
1h 05mnonstop
$165Southwest
Find Deal
Wed, Dec 11 - Thu, Dec 12
6:00 am - 1:23 pmONT-LAS
7h 23m1 stop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
Tue, Dec 17 - Fri, Dec 20
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
$19Frontier
Find Deal
Wed, Dec 11
2:33 pm - 3:45 pmONT-LAS
1h 12mnonstop
$20Frontier
Find Deal
Wed, Dec 18
8:25 pm - 9:30 pmONT-LAS
1h 05mnonstop
$94Southwest
Find Deal
Sun, Dec 15
9:55 am - 3:51 pmONT-LAS
5h 56m1 stop
$99American Airlines
Find Deal
Tue, Dec 17
5:30 am - 5:40 pmONT-LAS
12h 10m1 stop
$108Southwest
Find Deal
Sun, Dec 15
9:11 am - 9:48 pmONT-LAS
12h 37m2 stops
Thu, Dec 5
7:30 pm - 10:41 pmONT-LAS
3h 11m1 stop
$115American Airlines
Find Deal
Fri, Dec 20
9:11 am - 9:48 pmONT-LAS
12h 37m2 stops
Thu, Dec 5
4:20 pm - 10:40 pmONT-LAS
6h 20m1 stop
$131Alaska Airlines
Find Deal
Tue, Feb 25
6:00 am - 3:50 pmONT-LAS
9h 50m2 stops
$136Alaska Airlines
Find Deal
Wed, Jan 8
1:22 pm - 2:34 pmONT-LAS
1h 12mnonstop
8:00 am - 9:04 amLAS-ONT
1h 04mnonstop
$54Frontier
Find Deal
Mon, Nov 25 - Fri, Nov 29
10:05 pm - 11:20 pmONT-LAS
1h 15mnonstop
6:00 am - 7:08 amLAS-ONT
1h 08mnonstop
$60Frontier
Find Deal
Mon, Nov 25 - Tue, Nov 26
1:22 pm - 2:34 pmONT-LAS
1h 12mnonstop
8:00 am - 9:04 amLAS-ONT
1h 04mnonstop
$61Frontier
Find Deal
Mon, Nov 25 - Wed, Nov 27
10:05 pm - 11:20 pmONT-LAS
1h 15mnonstop
6:00 am - 7:08 amLAS-ONT
1h 08mnonstop
$62Frontier
Find Deal
Mon, Nov 25 - Tue, Nov 26
10:52 pm - 11:53 pmONT-LAS
1h 01mnonstop
6:00 am - 7:08 amLAS-ONT
1h 08mnonstop
$64Frontier
Find Deal
Sun, Nov 24 - Tue, Nov 26
10:05 pm - 11:20 pmONT-LAS
1h 15mnonstop
6:00 am - 7:08 amLAS-ONT
1h 08mnonstop
$65Frontier
Find Deal
Mon, Nov 25 - Thu, Nov 28
10:52 pm - 11:53 pmONT-LAS
1h 01mnonstop
6:00 am - 7:08 amLAS-ONT
1h 08mnonstop
$66Frontier
Find Deal
Sun, Nov 24 - Tue, Nov 26
10:05 pm - 11:20 pmONT-LAS
1h 15mnonstop
8:00 am - 9:04 amLAS-ONT
1h 04mnonstop
$67Frontier
Find Deal
Mon, Nov 25 - Fri, Nov 29
10:40 pm - 11:55 pmONT-LAS
1h 15mnonstop
10:28 pm - 12:22 pmLAS-ONT
13h 54m1 stop
Thu, Nov 21 - Sun, Nov 24
5:45 am - 8:00 amONT-LAS
26h 15m2 stops
6:00 am - 7:08 amLAS-ONT
1h 08mnonstop
Thu, Nov 21 - Sun, Nov 24
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
10:00 am - 11:08 amLAS-ONT
1h 08mnonstop
$36Frontier
Find Deal
Wed, Dec 11 - Fri, Dec 13
1:47 pm - 3:01 pmONT-LAS
1h 14mnonstop
7:00 am - 8:06 amLAS-ONT
1h 06mnonstop
$37Frontier
Find Deal
Mon, Dec 16 - Thu, Dec 19
12:53 pm - 1:59 pmONT-LAS
1h 06mnonstop
7:00 am - 8:06 amLAS-ONT
1h 06mnonstop
$38Frontier
Find Deal
Tue, Dec 17 - Thu, Dec 19
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
10:40 am - 11:48 amLAS-ONT
1h 08mnonstop
$39Frontier
Find Deal
Wed, Dec 11 - Thu, Dec 12
10:59 pm - 12:19 amONT-LAS
1h 20mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$42Frontier
Find Deal
Tue, Dec 17 - Tue, Dec 24
12:34 pm - 1:40 pmONT-LAS
1h 06mnonstop
6:55 pm - 7:59 pmLAS-ONT
1h 04mnonstop
$43Frontier
Find Deal
Wed, Dec 11 - Thu, Dec 12
12:53 pm - 1:59 pmONT-LAS
1h 06mnonstop
6:00 am - 7:09 amLAS-ONT
1h 09mnonstop
$44Frontier
Find Deal
Tue, Dec 17 - Fri, Dec 20
2:33 pm - 3:45 pmONT-LAS
1h 12mnonstop
2:05 pm - 3:14 pmLAS-ONT
1h 09mnonstop
$45Frontier
Find Deal
Wed, Dec 18 - Wed, Dec 25
6:45 am - 7:50 amONT-LAS
1h 05mnonstop
7:50 am - 8:55 amLAS-ONT
1h 05mnonstop
$165Southwest
Find Deal
Wed, Dec 11 - Thu, Dec 12
6:05 am - 7:10 amONT-LAS
1h 05mnonstop
8:40 pm - 9:45 pmLAS-ONT
1h 05mnonstop
$166Southwest
Find Deal
Sat, Jan 25 - Tue, Jan 28

Frontier flights from Ontario to Las Vegas

Our best Frontier deals on Ontario to Las Vegas flight tickets
Frontier
Dec 11
ONT12:34 pmOntario
1h 06m
LAS1:40 pmLas Vegas Harry Reid Intl
Dec 13
LAS10:00 amLas Vegas Harry Reid Intl
1h 08m
ONT11:08 amOntario
Frontier
Dec 16
ONT1:47 pmOntario
1h 14m
LAS3:01 pmLas Vegas Harry Reid Intl
Dec 19
LAS7:00 amLas Vegas Harry Reid Intl
1h 06m
ONT8:06 amOntario
Frontier
Dec 17
ONT12:53 pmOntario
1h 06m
LAS1:59 pmLas Vegas Harry Reid Intl
Dec 19
LAS7:00 amLas Vegas Harry Reid Intl
1h 06m
ONT8:06 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 from Ontario to Las Vegas?

January. The cheapest time of year to fly to Las Vegas from Ontario is January. Most expensive is February

What is the cheapest day to depart Ontario for Las Vegas?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Friday

When is the cheapest time to fly from Ontario to Las Vegas?

In the evening. Ontario to Las Vegas flights are approximately 7% more expensive at noon than in the evening

What is the cheapest Ontario to Las Vegas flight route?

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

How far in advance should you book Ontario to Las Vegas flights?

43 days before. The cheapest time to buy a flight from Ontario to Las Vegas is approximately 43 days to departure

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

There are 2 cabin classes available to choose from on Ontario to Las Vegas 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?

No. A direct flight is the cheapest option for a flight between Ontario to Las Vegas.

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

As of November 2024, prices for Ontario to Las Vegas flights are approximately 5% 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

$19

Fastest flight time

1h 01m

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 $19. 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 01m
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 01m.

  • 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
8,174 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $38Free CancellationRating
8.0
9,461 reviews
Search Alaska Airlines flights
FrontierPriceFrom $40Free CancellationRating
6.1
3,539 reviews
Search Frontier flights
DeltaPriceFrom $55Free CancellationRating
8.0
8,756 reviews
Search Delta flights
Ravn AlaskaPriceFrom $86Free CancellationRating
8.4
12 reviews
Search Ravn Alaska flights
SouthwestPriceFrom $176Free CancellationRating
8.1
5,014 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 34 Southwest flights from Ontario to Las Vegas this week, the average price was $246, with the best Southwest deals starting from $176 round-trip. 5,014 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 3,539 reviews) operates around 2 flights from Ontario to Las Vegas in any given week. The average Frontier airfare for this route is around $90, with deals from around $40 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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