HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$32+ Cheap flights from Arizona to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Arizona to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Arizona to Ontario

Cheapest flights from Arizona to Ontario
Explore the most affordable flight options available from Arizona to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2025.

This Priceline deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:13 pmLAS - ONT
Nonstop1h 04mFrontier
Wed 12/106:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/3$58
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:13 pmLAS - ONT
Nonstop1h 04mFrontier
Sat 12/66:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/4$60
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:56 pmLAS - ONT
Nonstop1h 08mFrontier
Thu 12/116:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/4$62
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:13 pmLAS - ONT
Nonstop1h 04mFrontier
Fri 12/56:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/3$71
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:13 pmLAS - ONT
Nonstop1h 04mFrontier
Sat 12/66:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/4$73
This Frontier deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:13 pmLAS - ONT
Nonstop1h 04mFrontier
Tue 12/96:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/4$78
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:13 pmLAS - ONT
Nonstop1h 04mFrontier
Tue 12/96:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/3$80
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:51 pmLAS - ONT
Nonstop1h 06mFrontier
Thu 11/206:30 amONT - LAS
Nonstop1h 10mFrontier
Deal found 11/4$83
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:10 amLAS - ONT
Nonstop1h 07mFrontier
Mon 11/1710:43 pmONT - LAS
Nonstop1h 10mFrontier
Deal found 11/4$84
This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/261:15 pmLAS - ONT
Nonstop1h 11mFrontier
Wed 12/36:15 amONT - LAS
Nonstop1h 07mFrontier
Deal found 11/2$88
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:33 pmLAS - ONT
Nonstop1h 09mFrontier
Tue 11/256:30 amONT - LAS
Nonstop1h 10mFrontier
Deal found 11/4$89
This Frontier deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/69:16 amPHX - ONT
1 stop6h 09mFrontier
Mon 12/82:59 pmONT - PHX
1 stop8h 43mFrontier
Deal found 11/4$110

Cheap flight deals from Arizona to Ontario

Keep the following information in mind while searching for Arizona to Ontario flight deals. Data was last updated November 5, 2025.

Round-trip from

$58
(CheapOair)

One-way from

$32
(Frontier)

Popular in

June

Cheapest in

January

Average price

$126

Good round-trip deal

$287 or less

Good one-way deal

$175 or less
From Arizona to Ontario
Search Deals
One-way flight from Arizona to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Arizona to Ontario.
Search Deals
Price to beat on a one-way flight from Arizona to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Arizona to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 5, 2025.
Use the filters below to find and compare flights from Arizona to Ontario that are best for you.

Fly from

Arizona

Fly to

Ontario

Route

Depart

Return

Price

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 1/6

7:05 pm-8:13 pm

Nonstop1h 08m

Ontario

Thu 1/8

6:30 am-7:37 am

Nonstop1h 07m

$58

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 1/6

7:05 pm-8:13 pm

Nonstop1h 08m

Ontario

Tue 1/13

11:31 am-12:44 pm

Nonstop1h 13m

$58

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sun 1/4

4:33 pm-5:42 pm

Nonstop1h 09m

Ontario

Tue 1/6

8:00 am-9:06 am

Nonstop1h 06m

$78

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Mon 12/29

8:13 pm-9:17 pm

Nonstop1h 04m

Ontario

Mon 1/12

5:13 pm-6:22 pm

Nonstop1h 09m

$78

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Thu 1/8

2:59 pm-11:31 pm

1 stop8h 32m

Ontario

Thu 1/15

3:30 pm-4:42 pm

Nonstop1h 12m

$84

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 11/19

7:33 pm-8:42 pm

Nonstop1h 09m

Ontario

Thu 11/20

6:30 am-7:40 am

Nonstop1h 10m

$84

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 11/12

7:33 pm-8:42 pm

Nonstop1h 09m

Ontario

Thu 11/13

10:05 am-11:14 am

Nonstop1h 09m

$89

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sun 12/21

8:23 pm-9:27 pm

Nonstop1h 04m

Ontario

Tue 12/23

6:17 pm-7:28 pm

Nonstop1h 11m

$98

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 11/26

1:15 pm-2:26 pm

Nonstop1h 11m

Ontario

Tue 12/2

6:15 am-7:22 am

Nonstop1h 07m

$98

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sun 12/14

8:13 pm-9:17 pm

Nonstop1h 04m

Ontario

Thu 12/18

6:17 pm-7:28 pm

Nonstop1h 11m

$102

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Arizona to Ontario

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

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

Currently, February is the cheapest month in which you can book a flight from Arizona to Ontario (average of $24). Flying from Arizona to Ontario in July is currently the most expensive (average of $79). 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 AZ to ONT?

Find hourly flight availability from Arizona to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 28% on flights from Arizona to Ontario by exploring options for tickets in the evening.

What is the cheapest day to fly from Arizona to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Arizona to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Arizona to Ontario flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Arizona to Ontario

Explore weekly flight availability from Arizona to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 5, 2025.

The most flights from USAZ to ONT are scheduled on a Monday (12 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

Find useful and relevant information for your journey from Arizona to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Arizona?

    If you book a flight to Ontario from Arizona, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Arizona to Ontario?

    For as low as $58, Frontier can have you in Ontario from Arizona in 1h 08m. Arizona and Ontario are separated by a distance of 197 mi. Most flights are nonstop.

  • What are the cheapest airlines to fly from Arizona to Ontario one-way?

    The cheapest airlines for a one-way flight from Arizona to Ontario are Southwest ($59), Delta ($108), and Alaska Airlines ($122).

  • What are the most popular routes from Arizona to Ontario?

    The most popular flight routes from Arizona to Ontario are Phoenix Sky Harbor Intl - Ontario, Las Vegas Harry Reid Intl - Ontario and Tucson - Ontario.

  • What are the most reliable airlines from Arizona to Ontario?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Arizona to Ontario on time: SkyWest Airlines (96%), American Airlines (86%), British Airways (84%).

  • What are the cheapest flights from Arizona to Ontario?

    Looking at all options, your cheapest flight can be booked for $105. While the most popular route (Phoenix Sky Harbor Intl - Ontario) can be booked for $110 on average, our data indicates $304 when flying from Arizona to Ontario.

  • Can I find deals for flights from Arizona to Ontario that include hotel bookings?

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

  • How can I find direct flights from Arizona to Ontario?

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

  • Can I find deals for business class flights from Arizona to Ontario?

    Yes. Cheapflights offers flight deals from Arizona to Ontario 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 Arizona to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Arizona to Ontario (average of $24). Flying from Arizona to Ontario in July is currently the most expensive (average of $79). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Arizona to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
San Francisco to Los Angeles flights
John F Kennedy Intl to San Francisco flights
Newark to Las Vegas flights
Seattle to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
Seattle to Las Vegas flights
San Francisco to Ontario flights
Newark to San Francisco flights
O'Hare Intl to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
San Francisco to Las Vegas flights
LaGuardia to Los Angeles flights
San Francisco to Santa Ana flights
Los Angeles to San Francisco flights
Dulles Intl to Las Vegas flights
Santa Ana to San Francisco flights
Ontario to San Francisco flights
Boston to Los Angeles flights
Seattle to San Diego flights
Los Angeles to Las Vegas flights
Reagan-National to Los Angeles flights
Minneapolis to Las Vegas flights
Denver to Las Vegas flights
Dulles Intl to Los Angeles flights
Boston to Las Vegas flights
LaGuardia to Las Vegas flights
O'Hare Intl to Los Angeles flights
Seattle to Ontario flights
Seattle to Santa Ana flights
Los Angeles to San Jose flights
Dallas/Fort Worth to San Francisco flights
Reagan-National to Las Vegas flights
San Jose to Las Vegas flights
Baltimore to Las Vegas flights
Burbank to Las Vegas flights
Baltimore to Los Angeles flights
Hobby to Las Vegas flights
LaGuardia to San Francisco flights
Atlanta to Los Angeles flights
John F Kennedy Intl to San Diego flights
Atlanta to Las Vegas flights
O'Hare Intl to San Francisco flights
Seattle to San Francisco flights
Austin to Las Vegas flights
Detroit to Las Vegas flights
Portland to Los Angeles flights
Santa Ana to Las Vegas flights

Top 3 airlines flying from Arizona to Ontario

Discover the top 3 airlines that operate flights from Arizona to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$164FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$97Average$328FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$97Average$273FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.