HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Arizona

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

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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHX
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Arizona 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 Ontario to Arizona

Keep the following information in mind while searching for Ontario to Arizona flight deals. Data was last updated January 6, 2026.

Round-trip from

$59
(CheapOair)

One-way from

$32
(Frontier)

Popular in

June

Cheapest in

February

Average price

$145

Good round-trip deal

$346 or less

Good one-way deal

$175 or less
From Ontario to Arizona
Search Deals
One-way flight from Ontario to Arizona
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Arizona.
Search Deals
Price to beat on a one-way flight from Ontario to Arizona.
Search Deals

Find flight deals from Ontario to Arizona

Cheapest flights from Ontario to Arizona
Explore the most affordable flight options available from Ontario to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.

This CheapOair deal was found by Cheapflights users on 1/6. 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 2/43:07 pmONT - LAS
Nonstop1h 12mFrontier
Sun 2/86:24 pmLAS - ONT
Nonstop1h 08mFrontier
Deal found 1/6$59
This Agoda.com deal was found by Cheapflights users on 1/5. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/273:07 pmONT - LAS
Nonstop1h 12mFrontier
Thu 1/296:45 pmLAS - ONT
Nonstop1h 08mFrontier
Deal found 1/5$60
This CheapOair deal was found by Cheapflights users on 1/5. 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 2/236:43 pmONT - LAS
Nonstop1h 09mFrontier
Mon 3/24:39 pmLAS - ONT
Nonstop1h 09mFrontier
Deal found 1/5$61
This Super.com deal was found by Cheapflights users on 1/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/293:22 pmONT - LAS
Nonstop1h 12mFrontier
Sun 2/16:24 pmLAS - ONT
Nonstop1h 08mFrontier
Deal found 1/6$62
This Mytrip deal was found by Cheapflights users on 1/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/313:04 pmONT - LAS
Nonstop1h 12mFrontier
Sun 2/86:24 pmLAS - ONT
Nonstop1h 08mFrontier
Deal found 1/6$63
This Priceline deal was found by Cheapflights users on 1/6. 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.
Tue 2/172:06 pmONT - LAS
Nonstop1h 14mFrontier
Thu 2/1912:00 pmLAS - ONT
Nonstop1h 11mFrontier
Deal found 1/6$65
This Super.com deal was found by Cheapflights users on 1/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:43 pmONT - LAS
Nonstop1h 10mFrontier
Sun 2/158:25 pmLAS - ONT
Nonstop1h 08mFrontier
Deal found 1/6$67
This CheapOair deal was found by Cheapflights users on 1/6. 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 1/268:05 pmONT - LAS
Nonstop1h 08mFrontier
Fri 1/3012:21 pmLAS - ONT
Nonstop1h 11mFrontier
Deal found 1/6$70
This Frontier deal was found by Cheapflights users on 1/4. 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 1/317:15 amONT - PHX
1 stop5h 25mFrontier
Sat 1/313:55 pmPHX - ONT
1 stop8h 29mFrontier
Deal found 1/4$123
This Super.com deal was found by Cheapflights users on 1/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/243:04 pmONT - PHX
1 stop6h 26mFrontier
Sat 1/313:55 pmPHX - ONT
1 stop8h 29mFrontier
Deal found 1/3$126
This Mytrip deal was found by Cheapflights users on 1/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/37:15 amONT - PHX
1 stop5h 25mFrontier
Wed 2/411:32 amPHX - ONT
1 stop3h 40mFrontier
Deal found 1/6$128
This CheapOair deal was found by Cheapflights users on 1/5. 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.
Tue 1/277:15 amONT - PHX
1 stop5h 25mFrontier
Sat 1/312:06 pmPHX - ONT
1 stop5h 34mFrontier
Deal found 1/5$129

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Arizona 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 January 6, 2026.
Use the filters below to find and compare flights from Ontario to Arizona that are best for you.

Fly from

Ontario

Fly to

Arizona

Route

Depart

Return

Price

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 1/26

3:22 pm-8:07 pm

1 stop3h 45m

Phoenix Sky Harbor Intl

Thu 1/29

4:52 pm-7:53 pm

1 stop4h 01m

$157

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 2/10

3:20 pm-5:40 pm

Nonstop1h 20m

Phoenix Sky Harbor Intl

Wed 2/11

6:00 am-10:20 am

1 stop5h 20m

$181

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sat 1/24

1:45 pm-4:00 pm

Nonstop1h 15m

Phoenix Sky Harbor Intl

Sat 1/31

11:05 am-11:25 am

Nonstop1h 20m

$191

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sat 1/31

10:15 am-12:30 pm

Nonstop1h 15m

Phoenix Sky Harbor Intl

Sat 2/7

11:05 am-11:25 am

Nonstop1h 20m

$191

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Thu 2/5

11:27 am-8:54 pm

1 stop8h 27m

Tucson

Sun 2/8

10:28 am-4:26 pm

1 stop6h 58m

$195

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Thu 1/29

11:27 am-8:54 pm

1 stop8h 27m

Tucson

Sun 2/1

10:28 am-4:26 pm

1 stop6h 58m

$195

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 2/4

5:45 pm-8:00 pm

Nonstop1h 15m

Phoenix Sky Harbor Intl

Sat 2/7

11:05 am-11:25 am

Nonstop1h 20m

$201

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Fri 3/13

11:59 am-11:57 pm

1 stop11h 58m

Phoenix Sky Harbor Intl

Wed 3/18

8:45 am-5:13 pm

1 stop8h 28m

$215

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Fri 2/6

3:35 pm-8:15 pm

1 stop4h 40m

Las Vegas Harry Reid Intl

Sun 2/8

7:25 am-12:25 pm

1 stop5h 00m

$217

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Wed 1/21

3:07 pm-4:53 pm

1 stop24h 46m

Tucson

Fri 1/23

8:50 pm-1:34 pm

1 stop17h 44m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

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

Best time to book a flight from Ontario to Arizona

Have a flexible travel schedule? Discover the best time to fly to Arizona from Ontario 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 Ontario to Arizona

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

Currently, April is the cheapest month in which you can book a flight from Ontario to Arizona (average of $28). Flying from Ontario to Arizona in July is currently the most expensive (average of $82). 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 AZ?

Find hourly flight availability from Ontario to Arizona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 6, 2026.

It’s optimal to fly from Ontario to Arizona at noon. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to Arizona. Price data was last updated on January 3, 2026.

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

Weekly flight availability from Ontario to Arizona

Explore weekly flight availability from Ontario to Arizona. 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 January 6, 2026.

The most flights from ONT to USAZ are scheduled on a Tuesday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Arizona

Get insights into the airlines that provide service to Arizona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Arizona. Reviews last updated January 6, 2026.
Read reviews from past customers who have flown Southwest, American Airlines, and Frontier from Ontario to Arizona. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,247 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,247 reviews
Southwest
8.0
Very good
4,247 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,083 reviews
Southwest
8.0
Very good
4,247 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.7
Fair
3,064 reviews
Southwest
8.0
Very good
4,247 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Arizona. 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 from for flights from Ontario to Arizona?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Arizona from Ontario.

  • How long is the flight from Ontario to Arizona?

    There are many flights that can get you from Ontario to Arizona in 1h 20m. Fly via Frontier, Southwest, or Alaska Airlines to get the fastest option. The distance between Ontario and Arizona is about 324 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $48. However, be on the lookout for offers from Frontier and American Airlines, as they are both options that can get you from Ontario to Arizona for a low price.

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

    The most popular route from Ontario to Arizona is Ontario - Las Vegas Harry Reid Intl. You may also consider Ontario - Phoenix Sky Harbor Intl or Ontario - Tucson.

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

    The top 3 most reliable airlines when flying from Ontario to Arizona are Porter Airlines (89%), British Airways (84%) and American Airlines (82%).

  • What are the cheapest flights from Ontario to Arizona?

    Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Ontario - Las Vegas Harry Reid Intl) can be booked for $57 on average, our data indicates $1,185 when flying from Ontario to Arizona.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Ontario to Arizona (average of $28). Flying from Ontario to Arizona in July is currently the most expensive (average of $82). 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 Ontario to Arizona

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Los Angeles to Seattle flights
San Francisco to Las Vegas flights
Los Angeles to Honolulu flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Miami flights
San Francisco to Ontario flights
Los Angeles to LaGuardia flights
Los Angeles to Newark flights
Los Angeles to Las Vegas flights
Los Angeles to Orlando flights
San Francisco to Los Angeles flights
Ontario to San Francisco flights
Los Angeles to Fort Lauderdale flights
San Jose to Los Angeles flights
San Francisco to Santa Ana flights
Los Angeles to San Francisco flights
Los Angeles to Dallas/Fort Worth flights
Burbank to Las Vegas flights
Santa Ana to Las Vegas flights
Los Angeles to O'Hare Intl flights
San Francisco to Dallas/Fort Worth flights
San Francisco to Newark flights
Los Angeles to Salt Lake City flights
Los Angeles to Denver flights
San Francisco to Honolulu flights
Santa Ana to San Francisco flights
San Francisco to O'Hare Intl flights
Los Angeles to Atlanta flights
San Francisco to Miami flights
Los Angeles to Kahului flights
Los Angeles to San Jose flights
San Francisco to LaGuardia flights
Los Angeles to Boston flights
Los Angeles to New Orleans flights
Sacramento to Las Vegas flights
Los Angeles to Reagan-National flights
San Francisco to Sky Harbor Intl flights
San Francisco to Seattle flights
Ontario to Seattle flights
Oakland to Las Vegas flights
Ontario to Dallas/Fort Worth flights
San Francisco to Denver flights
San Francisco to Orlando flights
San Jose to Las Vegas flights
San Francisco to Philadelphia flights
San Francisco to Burbank flights
Los Angeles to Baltimore flights
Ontario to Las Vegas flights
Los Angeles to Sky Harbor Intl flights

Top 3 airlines flying from Ontario to Arizona

Discover the top 3 airlines that operate flights from Ontario to Arizona. 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 January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$67Average$174FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$97Average$312FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$122Average$380FlexibilityNo cancel feeOn-time71%

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.