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Ontario

$34+ 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 3/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
Apr 1 — Apr 81
Wed 4/1
Wed 4/8
1 adult, Economy
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Cheap 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 March 2, 2026.

This CheapOair deal was found by Cheapflights users on 2/26. 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 3/187:55 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
Wed 3/2510:03 pm
ONT
-
LAS
Nonstop1h 11m
Frontier
Deal found 2/26$65
This Super.com deal was found by Cheapflights users on 2/26. 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 3/1912:00 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Mon 3/233:30 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 2/26$69
This Flightnetwork deal was found by Cheapflights users on 2/26. 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.
Sat 3/2812:17 pm
LAS
-
ONT
Nonstop1h 11m
Frontier
Sat 4/48:19 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
Deal found 2/26$70
This Super.com deal was found by Cheapflights users on 2/28. 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 4/410:30 am
LAS
-
ONT
Nonstop1h 09m
Frontier
Sat 4/48:19 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
Deal found 2/28$89
This Frontier deal was found by Cheapflights users on 2/27. 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 4/189:30 am
LAS
-
ONT
Nonstop1h 14m
Frontier
Mon 4/208:59 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
Deal found 2/27$90
This CheapOair deal was found by Cheapflights users on 2/28. 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 4/107:00 am
LAS
-
ONT
Nonstop1h 04m
Frontier
Sat 4/118:19 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
Deal found 2/28$94
This Booking.com deal was found by Cheapflights users on 2/27. 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.
Sat 4/255:41 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
Sat 5/27:44 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 2/27$95
This Super.com deal was found by Cheapflights users on 2/27. 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 4/107:00 am
LAS
-
ONT
Nonstop1h 04m
Frontier
Tue 4/147:44 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 2/27$96
This Kiwi.com deal was found by Cheapflights users on 2/26. 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.
Fri 4/107:00 am
LAS
-
ONT
Nonstop1h 04m
Frontier
Mon 4/139:02 pm
ONT
-
LAS
Nonstop1h 12m
Frontier
Deal found 2/26$97
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
Fri 5/17:00 am
LAS
-
ONT
Nonstop1h 04m
Frontier
Sun 5/38:19 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
Deal found 2/28$99
This Frontier deal was found by Cheapflights users on 2/27. 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 4/259:30 am
LAS
-
ONT
Nonstop1h 14m
Frontier
Mon 5/118:59 pm
ONT
-
LAS
Nonstop1h 09m
Frontier
Deal found 2/27$100
This Southwest deal was found by Cheapflights users on 2/28. 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 3/288:45 am
PHX
-
ONT
Nonstop1h 20m
Southwest
Thu 4/25:25 pm
ONT
-
PHX
Nonstop1h 20m
Southwest
Deal found 2/28$145

Find flight deals from Arizona to Ontario

Keep the following information in mind while searching for Arizona to Ontario flight deals. Data was last updated March 2, 2026.

Round-trip from

$65
(CheapOair)

One-way from

$30
(Frontier)

Popular in

June

Cheapest in

January

Average price

$138

Good round-trip deal

$171 or less

Good one-way deal

$85 or less
From Arizona to Ontario
Search Deals
One-way flight from Arizona to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($13 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 March 2026
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 March 2, 2026.
Use the filters below to find and compare flights from Arizona to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Wed 4/15

8:45 am-10:05 am

Nonstop1h 20m

Ontario

Wed 4/22

2:25 pm-3:40 pm

Nonstop1h 15m

$157

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 5/16

7:40 am-8:40 am

Nonstop1h 00m

Ontario

Sat 5/16

6:20 pm-9:55 pm

1 stop3h 35m

$189

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Mon 3/23

7:20 am-8:20 am

Nonstop1h 00m

Ontario

Tue 3/24

4:25 pm-7:40 pm

1 stop3h 15m

$189

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 3/24

12:10 pm-4:45 pm

1 stop4h 35m

Ontario

Sat 4/18

9:25 am-3:40 pm

2 stops6h 15m

$204

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 5/9

6:10 am-12:15 pm

2 stops6h 05m

Ontario

Sun 5/10

6:25 pm-10:10 pm

1 stop3h 45m

$230

TucsonOntario

TUS - ONT

TUSONT

Tucson

Sat 4/25

7:10 am-12:14 pm

1 stop5h 04m

Ontario

Tue 5/5

6:00 am-10:24 am

1 stop4h 24m

$255

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 4/25

5:30 am-5:47 pm

2 stops12h 17m

Ontario

Sat 5/2

5:00 am-1:09 pm

1 stop8h 09m

$264

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sun 3/29

7:45 am-8:50 am

Nonstop1h 05m

Ontario

Sun 4/5

10:45 am-4:30 pm

2 stops5h 45m

$265

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Fri 4/10

5:45 am-11:20 am

1 stop5h 35m

Ontario

Sun 4/12

7:40 pm-8:55 pm

Nonstop1h 15m

$269

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Wed 8/26

2:54 pm-8:20 pm

1 stop5h 26m

Ontario

Wed 9/2

1:18 pm-8:36 pm

1 stop7h 18m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/1

Showing 1-10 of 60 resultsSorted by cheapest first
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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.

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 $45). Flying from Arizona to Ontario in June 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 March 2, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 12% on flights from Arizona to Ontario by exploring options for tickets at noon.

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 February 21, 2026.

Travelers seeking maximum savings on their Arizona to Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Thursday evenings 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 March 2, 2026.

The most flights from USAZ to ONT are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 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 $157, Southwest can have you in Ontario from Arizona in 1h 20m. Arizona and Ontario are separated by a distance of 324 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 ($48), American Airlines ($63), and Frontier ($65).

  • 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: Porter Airlines (91%), British Airways (85%), American Airlines (80%).

  • 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 $145 on average, our data indicates $239 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 $45). Flying from Arizona to Ontario in June 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

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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 March 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$177FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$97Average$325FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$97Average$264FlexibilityNo cancel feeOn-time63%

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