Cheap flights from Las Vegas to Ontario (LAS - ONT) from $21

This is the cheapest one-way flight price, found on 5/24. Prices may vary by date and flight preferences.
LAS — ONT
May 30 — Jun 61
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The best prices from Las Vegas Harry Reid Intl to Ontario are usually found in May or December, booked 29 days in advance, depart on a Saturday or Wednesday and return on a Monday

How to find the cheapest flight from Las Vegas (LAS) to Ontario (ONT)

All the information you need to plan the best LAS to ONT flight in 2023: compare Las Vegas to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

Popular in

February

Cheapest in

May

Average price

$58

Round-trip from

$58
High demand for flights, 11% potential price rise
Best time to find cheap flights, 11% potential price drop
Average for round-trip flights in May 2023
From Las Vegas Harry Reid Intl to Ontario

LAS - ONT

Price

$58 - $73

ONT

Temperature

53.6 - 78.8 °F

ONT

Rainfall

0.1 - 3.4 inches

Cheap flights from Las Vegas to Ontario in May, June 2023

The best prices found for LAS to ONT flights for May, June
Listed are some of the best fares we've found on flights departing from Las Vegas to Ontario in 2023. More deals are always being added, so be sure to check back regularly.

Las Vegas to Ontario 2023 flight deals

Cheap flights to Ontario from Las Vegas found for this year
Listed are some of the best fares we've found on flights departing from Las Vegas to Ontario in 2023. More deals are always being added, so be sure to check back regularly.

Cheap Undisclosed Carrier flights from Las Vegas to Ontario

Peruse some of the lowest-priced Undisclosed Carrier flights we've found from Las Vegas to Ontario. It's recommended that users confirm their flight details before booking.

Cheap Frontier flights from Las Vegas to Ontario

Take a gander at the lowest prices we've found on Frontier flights from Las Vegas to Ontario. Make sure to examine the flight information before completing your reservation.

Non-stop flights to Ontario from Las Vegas

Save time with Las Vegas to Ontario direct flight deals
Consider booking one of these non-stop flights heading from Las Vegas to Ontario. If you're looking for other options for flights from Las Vegas to Ontario, make sure to update the search form at the top of page.

Last minute flights from Las Vegas to Ontario

Late deals on return flights to Ontario from Las Vegas, departing today and this week
Consider one of these great deals we found on last-minute flights from Las Vegas to Ontario. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to Ontario from Las Vegas

The cheapest one-way flights from Las Vegas to Ontario
Users traveling one-way from Las Vegas to Ontario can select one of these great deals. For those needing a return trip from Las Vegas, there is a search form available above.

Find flights from Las Vegas to Ontario within your budget

Use the slider to find flights from Las Vegas to Ontario that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$46 - $138

Route

Depart

Return

Price

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 7/11

Nonstop1h 07m

Ontario

Tue 7/25

Nonstop1h 12m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Fri 6/9

Nonstop1h 06m

Ontario

Mon 6/12

Nonstop1h 05m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 7/1

Nonstop1h 06m

Ontario

Tue 7/4

Nonstop1h 07m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 8/2

Nonstop1h 08m

Ontario

Sat 8/5

Nonstop1h 14m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 6/14

Nonstop1h 06m

Ontario

Wed 6/21

Nonstop1h 05m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Mon 6/5

Nonstop1h 06m

Ontario

Wed 6/7

Nonstop1h 07m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 8/23

Nonstop1h 08m

Ontario

Wed 8/30

Nonstop1h 10m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 6/10

Nonstop1h 06m

Ontario

Thu 6/15

Nonstop1h 05m

Las Vegas Harry Reid IntlOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Fri 6/23

Nonstop1h 06m

Ontario

Fri 6/30

Nonstop1h 00m

Flights are sorted by cheapest first

Deals found on 5/24

Reviews of Airlines Servicing Ontario

To help decide which airline to fly from Las Vegas to Ontario, see what other customers have to say about Undisclosed Carrier and Frontier. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.4
Good
2,147 reviews

Entertainment

7.0

Crew

8.0

Overall

7.4

Food

6.5

Comfort

7.4

Boarding

7.6

Reviews

1 / 10

Excellent airplaine, would like if you respect passengers departing time and not make more delays.

American Airlines
7.4
Good
2,147 reviews
American Airlines
7.4
Good
2,147 reviews

Entertainment

7.0

Crew

8.0

Overall

7.4

Food

6.5

Comfort

7.4

Boarding

7.6

Reviews

1 / 10

Excellent airplaine, would like if you respect passengers departing time and not make more delays.

Frontier
5.9
Fair
644 reviews
American Airlines
7.4
Good
2,147 reviews

Entertainment

7.0

Crew

8.0

Overall

7.4

Food

6.5

Comfort

7.4

Boarding

7.6

Reviews

1 / 10

Excellent airplaine, would like if you respect passengers departing time and not make more delays.

Related info for your journey

Useful info, stats and facts about Las Vegas to Ontario flights.

Alternative routes for Las Vegas to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Las Vegas to Ontario

The chart below displays the airlines Cheapflights users traveling from Las Vegas to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
FrontierCheapest$40Average$60FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Spirit AirlinesCheapest$45Average$94FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights

Hourly flight availability from Las Vegas to Ontario

See what time of day planes typically take off from Las Vegas to Ontario
30%of flight departuresEarly morningMidnight to 6 am
15%of flight departuresMorning6 am to noon
26%of flight departuresAfternoonNoon to 6 pm
29%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Las Vegas to Ontario

See how many times per day planes take to the skies headed from Las Vegas to Ontario
Sunday6daily flights
Monday8daily flights
Tuesday6daily flights
Wednesday6daily flights
Thursday8daily flights
Friday8daily flights
Saturday4daily flights