HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$30+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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.

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 September 17, 2025.

Round-trip from

$62
(Cheapflightsfares)

One-way from

$30
(SmartFares)

Popular in

June

Cheapest in

January

Average price

$132

Good round-trip deal

$117 or less

Good one-way deal

$99 or less
From Arizona to Ontario
Search Deals
One-way flight from Arizona to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($23 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 September 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

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 September 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:49 pmLAS - ONT
Nonstop1h 07mFrontier
Wed 10/158:00 amONT - LAS
Nonstop1h 12mFrontier
Deal found 9/15$62
This Frontier deal was found by Cheapflights users on 9/15. 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.
Fri 10/310:27 amLAS - ONT
Nonstop1h 16mFrontier
Mon 10/62:45 pmONT - LAS
Nonstop1h 15mFrontier
Deal found 9/15$63
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:45 pmLAS - ONT
Nonstop1h 11mFrontier
Thu 10/96:05 amONT - LAS
Nonstop1h 11mFrontier
Deal found 9/15$65
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/206:40 amLAS - ONT
Nonstop1h 07mFrontier
Wed 10/228:00 amONT - LAS
Nonstop1h 12mFrontier
Deal found 9/17$68
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:33 pmLAS - ONT
Nonstop1h 09mFrontier
Fri 10/1710:47 pmONT - LAS
Nonstop1h 10mFrontier
Deal found 9/16$70
This Flightnetwork deal was found by Cheapflights users on 9/17. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:33 pmLAS - ONT
Nonstop1h 09mFrontier
Fri 10/1010:47 pmONT - LAS
Nonstop1h 10mFrontier
Deal found 9/17$71
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:49 pmLAS - ONT
Nonstop1h 07mFrontier
Fri 10/310:28 pmONT - LAS
Nonstop1h 16mFrontier
Deal found 9/15$73
This CheapOair deal was found by Cheapflights users on 9/17. 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 9/286:10 amLAS - ONT
Nonstop1h 07mFrontier
Mon 10/205:15 pmONT - LAS
Nonstop1h 12mFrontier
Deal found 9/17$75
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:49 pmLAS - ONT
Nonstop1h 06mFrontier
Tue 11/48:00 amONT - LAS
Nonstop1h 12mFrontier
Deal found 9/16$76
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 9/278:49 pmLAS - ONT
Nonstop1h 07mFrontier
Sat 10/48:00 amONT - LAS
Nonstop1h 11mFrontier
Deal found 9/15$77
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/268:48 pmLAS - ONT
Nonstop1h 07mFrontier
Sat 9/278:00 amONT - LAS
Nonstop1h 11mFrontier
Deal found 9/15$78
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:03 amPHX - ONT
Nonstop1h 16mAmerican Airlines
Mon 10/2710:09 amONT - PHX
Nonstop1h 21mAmerican Airlines
Deal found 9/17$97

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 September 17, 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

Wed 10/1

8:49 pm-9:56 pm

Nonstop1h 07m

Ontario

Wed 10/15

8:00 am-9:12 am

Nonstop1h 12m

$62

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Fri 10/3

6:10 am-7:17 am

Nonstop1h 07m

Ontario

Mon 10/6

6:00 am-7:11 am

Nonstop1h 11m

$64

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Mon 10/27

7:40 am-8:45 am

Nonstop1h 05m

Ontario

Wed 10/29

9:10 pm-10:15 pm

Nonstop1h 05m

$77

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 10/14

7:20 am-8:25 am

Nonstop1h 05m

Ontario

Wed 10/15

9:10 pm-10:15 pm

Nonstop1h 05m

$77

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Thu 10/9

7:40 am-8:45 am

Nonstop1h 05m

Ontario

Sun 10/12

9:05 pm-10:10 pm

Nonstop1h 05m

$77

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 9/30

8:49 pm-9:56 pm

Nonstop1h 07m

Ontario

Tue 10/7

8:00 am-9:12 am

Nonstop1h 12m

$81

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 10/11

9:00 am-10:00 am

Nonstop1h 00m

Ontario

Tue 10/21

9:10 pm-10:15 pm

Nonstop1h 05m

$87

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 10/14

7:20 am-8:25 am

Nonstop1h 05m

Ontario

Tue 10/21

2:25 pm-6:45 pm

1 stop4h 20m

$87

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 10/8

7:35 am-11:15 am

1 stop3h 40m

Ontario

Thu 10/9

9:35 pm-10:40 pm

Nonstop1h 05m

$87

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 10/8

7:20 am-8:25 am

Nonstop1h 05m

Ontario

Wed 10/8

6:30 pm-10:05 pm

1 stop3h 35m

$87

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

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, August is the cheapest month in which you can book a flight from Arizona to Ontario (average of $246). Flying from Arizona to Ontario in March is currently the most expensive (average of $327). 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 September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Arizona to Ontario as you normally would.

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 September 17, 2025.

The most flights from USAZ to ONT are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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 $77, Frontier can have you in Ontario from Arizona in 1h 05m. Arizona and Ontario are separated by a distance of 197 mi. Most flights are nonstop.

  • 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 (90%), British Airways (77%).

  • What are the cheapest flights from Arizona to Ontario?

    Looking at all options, your cheapest flight can be booked for $48. While the most popular route (Phoenix Sky Harbor Intl - Ontario) can be booked for $97 on average, our data indicates $192 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, August is the cheapest month in which you can book a flight from Arizona to Ontario (average of $246). Flying from Arizona to Ontario in March is currently the most expensive (average of $327). 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
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
Seattle to Los Angeles flights
Newark to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Seattle to Las Vegas flights
O'Hare Intl to Las Vegas flights
Newark to Los Angeles flights
Los Angeles to San Francisco flights
San Francisco to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
San Francisco to Los Angeles flights
Los Angeles to Las Vegas flights
Seattle to Ontario flights
O'Hare Intl to Los Angeles flights
LaGuardia to Los Angeles flights
Atlanta to Las Vegas flights
Hobby to Las Vegas flights
Newark to San Francisco flights
Santa Ana to Las Vegas flights
LaGuardia to Las Vegas flights
Boston to Las Vegas flights
Reagan-National to Los Angeles flights
Burbank to Las Vegas flights
Ontario to San Francisco flights
Denver to Las Vegas flights
Dulles Intl to Los Angeles flights
San Francisco to Ontario flights
Dulles Intl to Las Vegas flights
San Francisco to Santa Ana flights
Seattle to San Diego flights
Boston to Los Angeles flights
John F Kennedy Intl to Ontario flights
Minneapolis to Las Vegas flights
San Jose to Los Angeles flights
Midway to Las Vegas flights
George Bush Intcntl to Las Vegas flights
San Jose to Las Vegas flights
O'Hare Intl to San Francisco flights
Los Angeles to San Jose flights
Reagan-National to Las Vegas flights
Austin to Las Vegas flights
Philadelphia to Las Vegas flights
Seattle to San Francisco flights
Dallas/Fort Worth to San Francisco flights
LaGuardia to San Francisco flights
Boston to San Francisco flights
Ontario to Las Vegas flights
Oakland 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$185FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$97Average$315FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$106Average$264FlexibilityNo 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.