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$42+ Cheap flights from Arizona to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 February 20, 2025.

Round-trip from

$42
(Frontier)

Popular in

March

Cheapest in

August

Average price

$137

Good round-trip deal

$218 or less

Good one-way deal

$122 or less
From Arizona to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Arizona to Ontario.
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Price to beat on a one-way flight from Arizona to Ontario.
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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 February 20, 2025.

This Frontier deal was found by Cheapflights users on 2/19. 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 4/256:15 amLAS - ONT
Nonstop1h 05mFrontier
Sat 4/2610:17 pmONT - LAS
Nonstop1h 11mFrontier
Deal found 2/19$45
This Frontier deal was found by Cheapflights users on 2/19. 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.
Thu 5/17:50 amPHX - ONT
1 stop7h 49mFrontier
Tue 5/610:44 amONT - PHX
1 stop6h 27mFrontier
Deal found 2/19$109
This Frontier deal was found by Cheapflights users on 2/19. 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.
Mon 3/1711:59 amTUS - ONT
1 stop12h 00mFrontier
Tue 3/1812:59 amONT - TUS
1 stop10h 00mFrontier
Deal found 2/19$110
This Southwest deal was found by Cheapflights users on 2/19. 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 4/228:50 amLAS - ONT
1 stop3h 30mSouthwest
Wed 4/238:45 pmONT - LAS
Nonstop1h 05mSouthwest
Deal found 2/19$117
This Southwest deal was found by Cheapflights users on 2/20. 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.
Thu 3/132:35 pmPHX - ONT
Nonstop1h 15mSouthwest
Fri 3/144:40 pmONT - PHX
Nonstop1h 15mSouthwest
Deal found 2/20$132
This American Airlines deal was found by Cheapflights users on 2/20. 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 3/207:26 amPHX - ONT
Nonstop1h 21mAmerican Airlines
Mon 3/249:32 amONT - PHX
Nonstop1h 21mAmerican Airlines
Deal found 2/20$148
This Orbitz deal was found by Cheapflights users on 2/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1410:34 amLAS - ONT
1 stop12h 50mMultiple Airlines
Sun 3/162:48 pmONT - LAS
Nonstop1h 15mMultiple Airlines
Deal found 2/20$201
This Orbitz deal was found by Cheapflights users on 2/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/67:00 amPHX - ONT
1 stop7h 43mMultiple Airlines
Tue 3/116:00 amONT - PHX
2 stops10h 34mMultiple Airlines
Deal found 2/18$226
This Booking.com deal was found by Cheapflights users on 2/19. 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.
Mon 3/1711:59 amTUS - ONT
1 stop12h 00mMultiple Airlines
Wed 3/1910:18 amONT - TUS
1 stop11h 42mMultiple Airlines
Deal found 2/19$244
This Delta deal was found by Cheapflights users on 2/18. 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.
Tue 3/116:55 amTUS - ONT
1 stop5h 34mDelta
Tue 3/115:15 pmONT - TUS
1 stop4h 39mDelta
Deal found 2/18$277
This American Airlines deal was found by Cheapflights users on 2/19. 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 4/38:47 amTUS - ONT
1 stop3h 12mAmerican Airlines
Mon 4/77:25 pmONT - TUS
1 stop2h 29mAmerican Airlines
Deal found 2/19$278
This Southwest deal was found by Cheapflights users on 2/20. 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.
Wed 3/125:35 amTUS - ONT
1 stop5h 05mSouthwest
Mon 3/174:40 pmONT - TUS
2 stops7h 10mSouthwest
Deal found 2/20$282

Find flights from Arizona to Ontario within your budget

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 February 20, 2025.

Fly from

Arizona

Fly to

Ontario

Route

Depart

Return

Price

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Mon 3/17

6:20 am-7:26 am

Nonstop1h 06m

Ontario

Mon 3/17

9:35 pm-10:48 pm

Nonstop1h 13m

$48

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 5/1

7:50 am-3:39 pm

1 stop7h 49m

Ontario

Tue 5/6

10:44 am-5:11 pm

1 stop6h 27m

$109

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 4/22

8:45 pm-9:45 pm

Nonstop1h 00m

Ontario

Wed 4/23

11:25 am-2:40 pm

1 stop3h 15m

$117

TucsonOntario

TUS - ONT

TUSONT

Tucson

Fri 4/11

11:49 am-11:59 pm

1 stop12h 10m

Ontario

Sun 4/13

12:59 am-10:53 am

1 stop9h 54m

$120

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 3/13

2:35 pm-3:50 pm

Nonstop1h 15m

Ontario

Fri 3/14

4:40 pm-5:55 pm

Nonstop1h 15m

$132

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 3/20

7:26 am-8:47 am

Nonstop1h 21m

Ontario

Mon 3/24

9:32 am-10:53 am

Nonstop1h 21m

$148

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Fri 3/14

10:34 am-11:24 pm

1 stop12h 50m

Ontario

Sun 3/16

2:48 pm-4:03 pm

Nonstop1h 15m

$201

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 3/6

7:00 am-1:43 pm

1 stop7h 43m

Ontario

Tue 3/11

6:00 am-4:34 pm

2 stops10h 34m

$226

TucsonOntario

TUS - ONT

TUSONT

Tucson

Wed 3/12

11:59 am-12:04 am

1 stop12h 05m

Ontario

Mon 3/17

11:45 am-10:04 pm

1 stop10h 19m

$263

TucsonOntario

TUS - ONT

TUSONT

Tucson

Thu 3/6

7:04 pm-10:00 pm

1 stop3h 56m

Ontario

Wed 3/19

9:32 am-2:24 pm

1 stop4h 52m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 36 results
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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.

Travel insights for flights from Arizona to Ontario

Get recent, data-driven insights about flights from Arizona to Ontario including ideal travel times, pricing trends, and more.

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 $315). 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 February 20, 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 February 20, 2025.

The most flights from USAZ to ONT are scheduled on a Thursday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated February 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Arizona to Ontario by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

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.

  • 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 Frontier ($44), American Airlines ($59), and Southwest ($69).

  • 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 (100%), Envoy Air (96%), American Airlines (94%).

  • What are the cheapest flights from Arizona to Ontario?

    Looking at all options, your cheapest flight can be booked for $68. While the most popular route (Phoenix Sky Harbor Intl - Ontario) can be booked for $109 on average our data indicates $246 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 $315). 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 Arizona to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$92FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$117Average$313FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$138Average$272FlexibilityNo cancel feeOn-time63%
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