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$43+ 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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHX
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
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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 March 26, 2025.

Round-trip from

$73
(Frontier)

One-way from

$43
(Trip.com)

Popular in

June

Cheapest in

September

Average price

$168

Good round-trip deal

$306 or less

Good one-way deal

$165 or less
From Ontario to Arizona
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One-way flight from Ontario to Arizona
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Highest demand for flights based on searches. 12% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Ontario to Arizona.
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Price to beat on a one-way flight from Ontario to Arizona.
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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 March 26, 2025.

This Frontier deal was found by Cheapflights users on 3/24. 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 4/82:43 pmONT - LAS
Nonstop1h 10mFrontier
Tue 4/87:45 pmLAS - ONT
Nonstop1h 04mFrontier
Deal found 3/24$73
This Southwest deal was found by Cheapflights users on 3/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/65:30 amONT - LAS
1 stop4h 35mSouthwest
Tue 5/67:05 pmLAS - ONT
Nonstop1h 05mSouthwest
Deal found 3/25$107
This Southwest deal was found by Cheapflights users on 3/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/285:20 amONT - PHX
Nonstop1h 10mSouthwest
Mon 4/287:55 amPHX - ONT
Nonstop1h 15mSouthwest
Deal found 3/25$137
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 4/257:25 pmONT - PHX
Nonstop1h 15mAmerican Airlines
Tue 4/298:43 pmPHX - ONT
Nonstop1h 15mAmerican Airlines
Deal found 3/24$152
This Frontier deal was found by Cheapflights users on 3/25. 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 4/12:43 pmONT - PHX
1 stop6h 55mFrontier
Wed 4/25:09 pmPHX - ONT
1 stop6h 50mFrontier
Deal found 3/25$180
This Frontier deal was found by Cheapflights users on 3/24. 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 4/812:59 amONT - TUS
1 stop9h 54mFrontier
Fri 4/1111:43 amTUS - ONT
1 stop12h 16mFrontier
Deal found 3/24$198
This Delta deal was found by Cheapflights users on 3/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/166:00 amONT - TUS
1 stop4h 20mDelta
Wed 4/235:14 pmTUS - ONT
1 stop6h 27mDelta
Deal found 3/25$217
This Southwest deal was found by Cheapflights users on 3/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:20 amONT - TUS
1 stop6h 00mSouthwest
Wed 5/283:30 pmTUS - ONT
2 stops6h 00mSouthwest
Deal found 3/25$262
This Expedia deal was found by Cheapflights users on 3/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1712:59 amONT - PHX
1 stop6h 25mMultiple Airlines
Tue 4/227:00 amPHX - ONT
2 stops8h 32mMultiple Airlines
Deal found 3/25$291
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Fri 5/26:15 amONT - TUS
1 stop3h 32mAmerican Airlines
Sun 5/45:13 pmTUS - ONT
1 stop4h 45mAmerican Airlines
Deal found 3/25$292
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Tue 4/226:15 amONT - FLG
1 stop3h 56mAmerican Airlines
Tue 4/296:26 pmFLG - ONT
1 stop3h 32mAmerican Airlines
Deal found 3/25$336
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/157:00 amONT - PHX
1 stop9h 37mAlaska Airlines
Tue 4/159:08 pmPHX - ONT
1 stop12h 20mAlaska Airlines
Deal found 3/24$343

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 March 26, 2025.
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

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 4/8

2:43 pm-3:53 pm

Nonstop1h 10m

Las Vegas Harry Reid Intl

Tue 4/8

7:45 pm-8:49 pm

Nonstop1h 04m

$73

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 5/6

5:30 am-10:05 am

1 stop4h 35m

Las Vegas Harry Reid Intl

Tue 5/6

7:05 pm-8:10 pm

Nonstop1h 05m

$107

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 4/28

5:20 am-6:30 am

Nonstop1h 10m

Phoenix Sky Harbor Intl

Mon 4/28

7:55 am-9:10 am

Nonstop1h 15m

$137

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Thu 4/24

12:50 pm-2:08 pm

Nonstop1h 18m

Phoenix Sky Harbor Intl

Sat 4/26

8:43 pm-9:58 pm

Nonstop1h 15m

$152

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 4/8

3:17 pm-11:57 pm

1 stop8h 40m

Phoenix Sky Harbor Intl

Tue 4/15

6:00 am-2:27 pm

1 stop8h 27m

$180

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Tue 4/8

12:59 am-10:53 am

1 stop9h 54m

Tucson

Fri 4/11

11:43 am-11:59 pm

1 stop12h 16m

$198

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Wed 4/16

6:00 am-10:20 am

1 stop4h 20m

Tucson

Wed 4/23

5:14 pm-11:41 pm

1 stop6h 27m

$217

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Sat 5/24

6:20 am-12:20 pm

1 stop6h 00m

Tucson

Wed 5/28

3:30 pm-9:30 pm

2 stops6h 00m

$262

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Sat 4/26

7:25 pm-10:38 pm

1 stop3h 13m

Las Vegas Harry Reid Intl

Mon 4/28

7:00 am-6:20 pm

1 stop11h 20m

$277

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sun 5/4

12:59 am-8:24 am

1 stop7h 25m

Phoenix Sky Harbor Intl

Tue 5/6

9:00 am-8:29 pm

2 stops11h 29m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 39 results
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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, January is the cheapest month in which you can book a flight from Ontario to Arizona (average of $258). Flying from Ontario to Arizona in March is currently the most expensive (average of $337). 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 March 26, 2025.

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

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 March 26, 2025.

The most flights from ONT to USAZ are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Arizona by month

Plan your trip to Arizona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Arizona ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Arizona when rainfall is around 0.0 in.

Temperature in Arizona by month

Plan your trip to Arizona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Arizona, 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 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 March 26, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Ontario to Arizona. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Overall

8.1

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Overall

8.1

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,789 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Overall

8.1

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,891 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Overall

8.1

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,331 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Overall

8.1

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Overall

8.1

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $43. However, be on the lookout for offers from Southwest 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 British Airways (93%), SkyWest Airlines (93%) and American Airlines (88%).

  • What are the cheapest flights from Ontario to Arizona?

    Looking at all options, your cheapest flight can be booked for $93. While the most popular route (Ontario - Las Vegas Harry Reid Intl) can be booked for $69 on average our data indicates $1,013 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, January is the cheapest month in which you can book a flight from Ontario to Arizona (average of $258). Flying from Ontario to Arizona in March is currently the most expensive (average of $337). 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

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Alternative routes for Ontario to Arizona

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$92FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$111Average$303FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$129Average$402FlexibilityNo cancel feeOn-time71%
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