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$39+ 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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHX
jul. 6 — jul. 131
dom. 7/6
dom. 7/13
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 julio 1, 2025.

Round-trip from

$78
(Frontier)

One-way from

$39
(CheapOair)

Popular in

June

Cheapest in

September

Average price

$157

Good round-trip deal

$324 or less

Good one-way deal

$180 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. 14% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 1, 2025.

This Frontier deal was found by Cheapflights users on 6/30. 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.
sáb. 7/125:13 pmONT - LAS
Nonstop1h 14mFrontier
lun. 7/147:45 pmLAS - ONT
Nonstop1h 07mFrontier
Deal found 6/30$78
This Southwest deal was found by Cheapflights users on 6/30. 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.
lun. 8/45:40 amONT - LAS
Nonstop1h 05mSouthwest
mié. 8/68:40 amLAS - ONT
1 stop3h 20mSouthwest
Deal found 6/30$107
This Priceline deal was found by Cheapflights users on 6/29. 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.
jue. 7/36:00 amONT - TUS
1 stop5h 48mFrontier
jue. 7/1012:45 pmTUS - ONT
1 stop3h 34mFrontier
Deal found 6/29$166
This Priceline deal was found by Cheapflights users on 7/1. 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.
mar. 7/812:59 amONT - PHX
1 stop9h 41mFrontier
vie. 7/186:00 amPHX - ONT
1 stop5h 53mFrontier
Deal found 7/1$168
This Southwest deal was found by Cheapflights users on 6/30. 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.
jue. 8/218:40 pmONT - PHX
Nonstop1h 20mSouthwest
vie. 8/224:25 pmPHX - ONT
1 stop4h 00mSouthwest
Deal found 6/30$171
This American Airlines deal was found by Cheapflights users on 6/29. 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.
jue. 8/76:17 amONT - TUS
1 stop3h 12mAmerican Airlines
lun. 8/113:00 pmTUS - ONT
1 stop2h 52mAmerican Airlines
Deal found 6/29$178
This American Airlines deal was found by Cheapflights users on 6/30. 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.
vie. 9/124:45 pmONT - PHX
Nonstop1h 27mAmerican Airlines
sáb. 9/138:04 amPHX - ONT
Nonstop1h 17mAmerican Airlines
Deal found 6/30$188
This Delta deal was found by Cheapflights users on 6/30. 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.
jue. 8/75:09 pmONT - TUS
1 stop4h 25mDelta
lun. 8/114:55 pmTUS - ONT
1 stop6h 45mDelta
Deal found 6/30$197
This Southwest deal was found by Cheapflights users on 7/1. 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.
mar. 7/296:20 amONT - TUS
1 stop3h 25mSouthwest
mar. 8/52:55 pmTUS - ONT
1 stop7h 10mSouthwest
Deal found 7/1$214
This American Airlines deal was found by Cheapflights users on 6/30. 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.
lun. 8/1112:22 pmONT - FLG
1 stop5h 15mAmerican Airlines
jue. 8/1410:30 amFLG - ONT
1 stop5h 54mAmerican Airlines
Deal found 6/30$286
This United Airlines deal was found by Cheapflights users on 6/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/11:15 pmONT - TUS
1 stop7h 09mUnited Airlines
mié. 10/157:15 amTUS - ONT
1 stop4h 58mUnited Airlines
Deal found 6/30$297

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 julio 1, 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

sáb. 7/12

5:13 pm-6:27 pm

Nonstop1h 14m

Las Vegas Harry Reid Intl

lun. 7/14

7:45 pm-8:52 pm

Nonstop1h 07m

$78

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

mar. 8/12

9:00 pm-10:10 pm

Nonstop1h 10m

Las Vegas Harry Reid Intl

vie. 8/15

6:50 pm-7:55 pm

Nonstop1h 05m

$100

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

jue. 8/21

8:40 pm-10:00 pm

Nonstop1h 20m

Phoenix Sky Harbor Intl

vie. 8/22

4:25 pm-8:25 pm

1 stop4h 00m

$171

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

vie. 8/8

6:00 am-11:52 am

1 stop5h 52m

Phoenix Sky Harbor Intl

dom. 8/10

12:47 pm-4:19 pm

1 stop3h 32m

$172

OntarioTucson

ONT - TUS

ONTTUS

Ontario

jue. 8/7

6:17 am-9:29 am

1 stop3h 12m

Tucson

lun. 8/11

3:00 pm-5:52 pm

1 stop2h 52m

$178

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

vie. 9/12

4:45 pm-6:12 pm

Nonstop1h 27m

Phoenix Sky Harbor Intl

sáb. 9/13

8:04 am-9:21 am

Nonstop1h 17m

$188

OntarioTucson

ONT - TUS

ONTTUS

Ontario

jue. 8/7

5:09 pm-9:34 pm

1 stop4h 25m

Tucson

lun. 8/11

4:55 pm-11:40 pm

1 stop6h 45m

$197

OntarioTucson

ONT - TUS

ONTTUS

Ontario

mar. 7/29

6:20 am-9:45 am

1 stop3h 25m

Tucson

mar. 8/5

2:55 pm-10:05 pm

1 stop7h 10m

$214

OntarioTucson

ONT - TUS

ONTTUS

Ontario

mié. 8/13

12:59 am-10:45 am

1 stop9h 46m

Tucson

dom. 8/17

11:30 am-9:13 am

1 stop21h 43m

$222

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

lun. 8/11

12:22 pm-5:37 pm

1 stop5h 15m

Flagstaff Pulliam

jue. 8/14

10:30 am-4:24 pm

1 stop5h 54m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 23 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 julio 1, 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.

How much does it cost to fly round-trip from Ontario to Arizona?

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 julio 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Ontario to Arizona. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,273 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $39. However, be on the lookout for offers from American Airlines and Southwest, 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 Envoy Air (90%), American Airlines (86%) and Southwest (83%).

  • What are the cheapest flights from Ontario to Arizona?

    Looking at all options, your cheapest flight can be booked for $124. While the most popular route (Ontario - Las Vegas Harry Reid Intl) can be booked for $63 on average our data indicates $894 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 julio 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$128FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$112Average$312FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$126Average$396FlexibilityNo cancel feeOn-time71%

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