How often are flights from Ontario to Las Vegas delayed?

About 16% of weekly flights between Ontario and Las Vegas have experienced delays in the past year, with the average delay time being 104 minutes.

Which airline has the best punctuality record on Ontario to Las Vegas flights?

Over the past year, Frontier has had the lowest number of delays on this route, with just 13% of flights being delayed.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for Ontario to Las Vegas flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

How popular is this Ontario to Las Vegas flight route?

This flight path from Ontario to Las Vegas Harry Reid Intl was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from Ontario to Las Vegas?

A quick flight from Ontario to Las Vegas can take about 1h 05m. Southwest provides one of the quickest options available for as low as C$ 163. The distance from Ontario to Las Vegas is about 317 km. Generally, flights for this route are direct.

In terms of precipitation, rainfall in Las Vegas ranges from 3.0 - 20.0 mm per month. February is typically the wettest month, when rainfall can reach 20.0 mm. May is typically the driest time to visit Las Vegas when rainfall is around 3.0 mm.

If weather is an important factor for your trip to Las Vegas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 34.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 9.0 C).

What are the most reliable airlines from Ontario to Las Vegas?

Consider Frontier (75%), Volaris (75%) or Southwest (71%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Las Vegas.

Can I find deals for flights from Ontario to Las Vegas that include hotel bookings?

Yes. In addition to deals on Ontario to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Las Vegas?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Las Vegas.

Can I find deals for business class flights from Ontario to Las Vegas?

Yes. Cheapflights offers flight deals from Ontario to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 82+ Cheap Flights from Ontario to Las Vegas

Cheap flight deals from Ontario to Las Vegas

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Cheapest flights from Ontario to Las Vegas
Explore the most affordable flight options available from Ontario to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Tue 22/1210:48 p.m. -

Nonstop1h 04m

Mon 28/126:01 a.m. -

Nonstop1h 06m

Deal found 28/10C$ 126

Tue 22/1210:48 p.m. -

Nonstop1h 04m

Tue 29/128:52 p.m. -

Nonstop1h 01m

Deal found 28/10C$ 130

Mon 21/129:37 p.m. -

Nonstop1h 12m

Mon 28/126:01 a.m. -

Nonstop1h 06m

Deal found 28/10C$ 133

Sat 5/126:00 a.m. -

2 stops8h 39m

Sun 6/125:25 p.m. -

Nonstop1h 06m

Deal found 27/10C$ 144

Thu 12/112:23 p.m. -

Nonstop1h 08m

Fri 13/113:13 p.m. -

Nonstop1h 08m

Deal found 29/10C$ 151

Sun 22/115:35 a.m. -

Nonstop1h 05m

Tue 24/117:40 a.m. -

Nonstop1h 10m

Deal found 29/10C$ 163

Sat 21/116:45 p.m. -

1 stop4h 40m

Sun 22/1110:35 p.m. -

Nonstop1h 05m

Deal found 30/10C$ 177

Thu 31/125:00 p.m. -

Nonstop1h 05m

Thu 7/110:10 a.m. -

2 stops5h 25m

Deal found 29/10C$ 184

Find flight deals from Ontario to Las Vegas

Round-trip from	C$ 126
One-way from	C$ 82
Popular in	October
Cheapest in	February
Average price	C$ 316

Frontier
22/12-28/12
Nonstop
2h 10m total
Ontario to Las Vegas

Search Deals

Southwest
18/11-31/12
Nonstop
1h 05m total
Ontario to Las Vegas

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (C$ 44 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Mon 23/11

6:50 p.m.-7:55 p.m.

Nonstop1h 05m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 82

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Sat 13/2

5:55 p.m.-9:40 p.m.

1 stop3h 45m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 96

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Sun 13/12

12:10 p.m.-3:40 p.m.

1 stop3h 30m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 96

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Sun 6/12

5:00 a.m.-8:20 a.m.

1 stop3h 20m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 96

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Wed 3/2

1:50 p.m.-7:15 p.m.

1 stop5h 25m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 96

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Tue 10/11

9:25 a.m.-2:11 p.m.

1 stop4h 46m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 152

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Tue 10/11

5:55 a.m.-11:15 a.m.

1 stop5h 20m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 152

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Sat 14/11

1:10 p.m.-7:10 p.m.

2 stops6h 00m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 187

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Thu 31/12

1:30 p.m.-6:50 p.m.

1 stop5h 20m

Las Vegas Harry Reid Intl

Mon 4/1

5:30 a.m.-10:45 a.m.

1 stop5h 15m

C$ 191

OntarioLas Vegas

ONT Ontario - LAS Las Vegas Harry Reid Intl

ONTLAS

Ontario

Sat 19/12

7:00 p.m.-12:10 a.m.

1 stop5h 10m

Las Vegas Harry Reid Intl

Wed 23/12

8:15 p.m.-11:45 p.m.

1 stop3h 30m

C$ 191

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

Showing 1-10 of 24 resultsSorted by cheapest first

Best time to book a flight from Ontario to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Ontario with our price prediction graph.

ONT-LAS

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Las Vegas

Prices

Delays

How far ahead should I book a flight from Ontario to Las Vegas?

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Las Vegas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Las Vegas?

Currently, February is the cheapest month in which you can book a flight from Ontario to Las Vegas (average of C$ 149). Flying from Ontario to Las Vegas in October is currently the most expensive (average of C$ 316). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to LAS?

One of the essential ways to save on airfare from Ontario to Las Vegas is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 70% on airfare.

How much does it cost to fly round-trip from Ontario to Las Vegas?

Airfare is below average for this route at the moment.

Ontario to Las Vegas flights typically cost between C$ 170 and C$ 306 in December.
The cheapest round-trip price found within the last 5 days was C$ 126 on Frontier (22 Dec-28 Dec).

Related info for your journey

How popular is this Ontario to Las Vegas flight route?
This flight path from Ontario to Las Vegas Harry Reid Intl was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Ontario to Las Vegas?
A quick flight from Ontario to Las Vegas can take about 1h 05m. Southwest provides one of the quickest options available for as low as C$ 163. The distance from Ontario to Las Vegas is about 317 km. Generally, flights for this route are direct.
What are the most reliable airlines from Ontario to Las Vegas?
Consider Frontier (75%), Volaris (75%) or Southwest (71%) when booking your flight. These represent the most reliable airlines when flying from Ontario to Las Vegas.
Can I find deals for flights from Ontario to Las Vegas that include hotel bookings?
Yes. In addition to deals on Ontario to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Las Vegas?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Las Vegas.
Can I find deals for business class flights from Ontario to Las Vegas?
Yes. Cheapflights offers flight deals from Ontario to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to Las Vegas?
Currently, February is the cheapest month in which you can book a flight from Ontario to Las Vegas (average of C$ 149). Flying from Ontario to Las Vegas in October is currently the most expensive (average of C$ 316). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Cheapflights helps you search for flights from Ontario to Las Vegas via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Las Vegas?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Las Vegas for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ontario to Las Vegas with no change fees?

Need flexible booking options for your flight to Las Vegas from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Not ready to book yet? You can track prices for flights from Ontario to Las Vegas on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Ontario to Las Vegas from C$ 82

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Las Vegas

Cheapest flights from Ontario to Las VegasExplore the most affordable flight options available from Ontario to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from Ontario to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Ontario to Las VegasDiscover carefully curated flight deals from Ontario to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from Ontario to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Ontario to Las VegasExplore direct flight options from Ontario to Las Vegas based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Explore direct flight options from Ontario to Las Vegas based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Ontario to Las VegasDiscover last-minute flight deals from Ontario to Las Vegas. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to Las Vegas. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Ontario to Las VegasSearch for one-way flight options from Ontario to Las Vegas. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from Ontario to Las Vegas. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Find flight deals from Ontario to Las Vegas

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Use the filters below to find and compare flights from Ontario to Las Vegas that are best for you.

Best time to book a flight from Ontario to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Ontario with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from Ontario to Las Vegas?

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Las Vegas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Las Vegas?

What is the cheapest time of day to fly from ONT to LAS?

One of the essential ways to save on airfare from Ontario to Las Vegas is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 70% on airfare.

How much does it cost to fly round-trip from Ontario to Las Vegas?

Airfare is below average for this route at the moment.

Ontario to Las Vegas flights typically cost between C$ 170 and C$ 306 in December.The cheapest round-trip price found within the last 5 days was C$ 126 on Frontier (22 Dec-28 Dec).

How often are flights from Ontario to Las Vegas delayed?

About 16% of weekly flights between Ontario and Las Vegas have experienced delays in the past year, with the average delay time being 104 minutes.

What is the most punctual flight time for Ontario to Las Vegas flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ontario to Las Vegas flights?

Over the past year, Frontier has had the lowest number of delays on this route, with just 13% of flights being delayed.

Related info for your journey

How popular is this Ontario to Las Vegas flight route?

How long is the flight from Ontario to Las Vegas?

What are the most reliable airlines from Ontario to Las Vegas?

Can I find deals for flights from Ontario to Las Vegas that include hotel bookings?

How can I find direct flights from Ontario to Las Vegas?

Can I find deals for business class flights from Ontario to Las Vegas?

What is the cheapest month to book a flight from Ontario to Las Vegas?

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Complete your trip to Las Vegas by adding a car rental and/or hotel reservation to your travel itinerary.

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Other flights to Las Vegas

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How does Cheapflights help users find flights from Ontario to Las Vegas?

Why should you use Cheapflights to find cheap flight tickets from Ontario to Las Vegas?

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Cheapest flights from Ontario to Las Vegas
Explore the most affordable flight options available from Ontario to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Ontario to Las Vegas
Discover carefully curated flight deals from Ontario to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Ontario to Las Vegas
Explore direct flight options from Ontario to Las Vegas based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Ontario to Las Vegas
Discover last-minute flight deals from Ontario to Las Vegas. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Ontario to Las Vegas
Search for one-way flight options from Ontario to Las Vegas. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Ontario to Las Vegas flights typically cost between C$ 170 and C$ 306 in December.
The cheapest round-trip price found within the last 5 days was C$ 126 on Frontier (22 Dec-28 Dec).