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Cheap flights from Las Vegas to Ontario 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 Las Vegas to Ontario departing on 3/28. 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.
6:20 am - 7:26 amLAS-ONT
1h 06mnonstop
10:44 am - 11:58 amONT-LAS
1h 14mnonstop
$33Frontier
Find Deal
jue., mar. 27 - jue., mar. 27
6:20 am - 7:26 amLAS-ONT
1h 06mnonstop
10:34 am - 11:48 amONT-LAS
1h 14mnonstop
$37Frontier
Find Deal
lun., feb. 24 - lun., feb. 24
1:53 pm - 3:04 pmLAS-ONT
1h 11mnonstop
2:43 pm - 3:58 pmONT-LAS
1h 15mnonstop
$38Frontier
Find Deal
mar., mar. 11 - mar., mar. 18
1:53 pm - 3:04 pmLAS-ONT
1h 11mnonstop
2:43 pm - 3:58 pmONT-LAS
1h 15mnonstop
$39Frontier
Find Deal
mié., mar. 12 - jue., mar. 20
6:35 am - 7:40 amLAS-ONT
1h 05mnonstop
9:55 pm - 11:00 pmONT-LAS
1h 05mnonstop
$117Southwest
Find Deal
lun., mar. 10 - jue., mar. 13
7:10 pm - 8:15 pmLAS-ONT
1h 05mnonstop
5:00 pm - 10:35 pmONT-LAS
5h 35m1 stop
$127Southwest
Find Deal
mié., mar. 12 - mié., mar. 19
3:25 pm - 8:10 pmLAS-ONT
4h 45m1 stop
5:00 pm - 10:35 pmONT-LAS
5h 35m1 stop
$137Southwest
Find Deal
mié., mar. 12 - mié., mar. 19
9:56 am - 3:32 pmLAS-ONT
5h 36m1 stop
7:35 pm - 10:40 pmONT-LAS
3h 05m1 stop
$231American Airlines
Find Deal
vie., mar. 14 - vie., mar. 21
1:25 pm - 6:36 pmLAS-ONT
5h 11m1 stop
7:35 pm - 10:40 pmONT-LAS
3h 05m1 stop
$289American Airlines
Find Deal
vie., mar. 7 - mar., mar. 11
7:00 am - 6:33 pmLAS-ONT
11h 33m2 stops
7:35 pm - 11:55 pmONT-LAS
4h 20m1 stop
$292American Airlines
Find Deal
jue., mar. 13 - dom., mar. 16

Frontier flights from Las Vegas to Ontario

Our best Frontier deals on Las Vegas to Ontario flight tickets
Frontier
Mar 27
LAS6:20 amLas Vegas Harry Reid Intl
1h 06m
ONT7:26 amOntario
Mar 27
ONT10:44 amOntario
1h 14m
LAS11:58 amLas Vegas Harry Reid Intl
Frontier
Feb 24
LAS6:20 amLas Vegas Harry Reid Intl
1h 06m
ONT7:26 amOntario
Feb 24
ONT10:34 amOntario
1h 14m
LAS11:48 amLas Vegas Harry Reid Intl
Frontier
Mar 11
LAS1:53 pmLas Vegas Harry Reid Intl
1h 11m
ONT3:04 pmOntario
Mar 18
ONT2:43 pmOntario
1h 15m
LAS3:58 pmLas Vegas Harry Reid Intl

American Airlines flights from Las Vegas to Ontario

Our best American Airlines deals on Las Vegas to Ontario flight tickets
American Airlines
Mar 14
LAS9:56 amLas Vegas Harry Reid Intl
5h 36m
1 stop
ONT3:32 pmOntario
Mar 21
ONT7:35 pmOntario
3h 05m
1 stop
LAS10:40 pmLas Vegas Harry Reid Intl
American Airlines
Mar 7
LAS1:25 pmLas Vegas Harry Reid Intl
5h 11m
1 stop
ONT6:36 pmOntario
Mar 11
ONT7:35 pmOntario
3h 05m
1 stop
LAS10:40 pmLas Vegas Harry Reid Intl
American Airlines
Mar 13
LAS7:00 amLas Vegas Harry Reid Intl
11h 33m
2 stops
ONT6:33 pmOntario
Mar 16
ONT7:35 pmOntario
4h 20m
1 stop
LAS11:55 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 Thursday 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 $95.

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 $60. 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 $83 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 6 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $67 when searching 6 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 $50 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 February 2025, prices for Las Vegas to Ontario flights are approximately 5% 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

$24

Fastest flight time

1h 02m

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 $24. The best round-trip flight deal from Las Vegas to Ontario found on momondo in the last 72 hours is $33.
The fastest flight from Las Vegas to Ontario takes 1h 02m
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 $26Free CancellationRating
6.3
8,057 reviews
Search Spirit Airlines flights
FrontierPriceFrom $38Free CancellationRating
6.0
3,381 reviews
Search Frontier flights
SouthwestPriceFrom $167Free CancellationRating
8.1
4,467 reviews
Search Southwest flights
  • Southwest Flights From Las Vegas to Ontario

    Across 25 Southwest flights from Las Vegas to Ontario this week, the average price was $258, with the best Southwest deals starting from $167 round-trip. 4,467 users have rated Southwest on momondo, with an average score of 8.1/10.

  • Frontier Flights From Las Vegas to Ontario

    Frontier (6.0/10 from 3,381 reviews) operates around 2 flights from Las Vegas to Ontario in any given week. The average Frontier airfare for this route is around $68, 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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mar. 2/25

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