HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Arizona to Ontario 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 Arizona to Ontario

Keep the following information in mind while searching for Arizona to Ontario flight deals. Data was last updated April 17, 2025.

Round-trip from

$53
(Cheapflightsfares)

One-way from

$34
(Cheapflightsfares)

Popular in

June

Cheapest in

August

Average price

$127

Good round-trip deal

$167 or less

Good one-way deal

$149 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 ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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

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 April 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/166:20 amLAS - ONT
Nonstop1h 04mFrontier
Sat 5/171:15 pmONT - LAS
Nonstop1h 11mFrontier
Deal found 4/16$53
This American Airlines deal was found by Cheapflights users on 4/17. 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 5/157:41 amPHX - ONT
Nonstop1h 13mAmerican Airlines
Mon 5/197:25 pmONT - PHX
Nonstop1h 15mAmerican Airlines
Deal found 4/17$97
This Southwest deal was found by Cheapflights users on 4/16. 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 5/154:20 pmPHX - ONT
Nonstop1h 15mSouthwest
Tue 5/206:10 amONT - PHX
1 stop3h 45mSouthwest
Deal found 4/16$107
This Southwest deal was found by Cheapflights users on 4/15. 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 5/134:10 pmLAS - ONT
1 stop5h 20mSouthwest
Tue 5/2011:00 amONT - LAS
2 stops5h 15mSouthwest
Deal found 4/15$122
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/85:50 amPHX - ONT
1 stop5h 25mFrontier
Sun 5/118:24 amONT - PHX
1 stop5h 08mFrontier
Deal found 4/17$157
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 6/109:46 amLAS - ONT
1 stop7h 39mUnited Airlines
Tue 6/175:10 amONT - LAS
1 stop7h 16mUnited Airlines
Deal found 4/17$157
This Frontier deal was found by Cheapflights users on 4/16. 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 5/812:17 pmTUS - ONT
1 stop11h 42mFrontier
Sat 5/1012:59 amONT - TUS
1 stop10h 07mFrontier
Deal found 4/16$160
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 5/145:15 amPHX - ONT
1 stop7h 09mUnited Airlines
Wed 5/146:48 pmONT - PHX
1 stop4h 39mUnited Airlines
Deal found 4/17$206
This Delta deal was found by Cheapflights users on 4/16. 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 7/14:55 pmTUS - ONT
1 stop6h 26mDelta
Sat 7/56:00 amONT - TUS
1 stop4h 35mDelta
Deal found 4/16$237
This Orbitz deal was found by Cheapflights users on 4/16. 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 5/812:17 pmTUS - ONT
1 stop11h 42mMultiple Airlines
Sat 5/104:29 pmONT - TUS
1 stop6h 49mMultiple Airlines
Deal found 4/16$252
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Sat 5/103:21 pmTUS - ONT
1 stop3h 02mAmerican Airlines
Sun 5/111:14 pmONT - TUS
1 stop3h 08mAmerican Airlines
Deal found 4/16$256
This Southwest deal was found by Cheapflights users on 4/16. 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 5/86:40 pmTUS - ONT
1 stop4h 20mSouthwest
Sat 5/105:50 amONT - TUS
2 stops10h 00mSouthwest
Deal found 4/16$283

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 April 17, 2025.
Use the filters below to find and compare flights from Arizona to Ontario that are best for you.

Fly from

Arizona

Fly to

Ontario

Route

Depart

Return

Price

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Fri 5/16

6:20 am-7:24 am

Nonstop1h 04m

Ontario

Sat 5/17

1:15 pm-2:26 pm

Nonstop1h 11m

$53

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 5/8

7:41 am-8:54 am

Nonstop1h 13m

Ontario

Mon 5/12

7:25 pm-8:40 pm

Nonstop1h 15m

$97

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 5/15

4:20 pm-5:35 pm

Nonstop1h 15m

Ontario

Tue 5/20

6:10 am-9:55 am

1 stop3h 45m

$107

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 5/13

9:55 am-11:00 am

Nonstop1h 05m

Ontario

Tue 5/20

4:30 pm-9:55 pm

1 stop5h 25m

$107

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Tue 6/10

9:46 am-5:25 pm

1 stop7h 39m

Ontario

Tue 6/17

5:10 am-12:26 pm

1 stop7h 16m

$157

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 5/8

11:08 am-5:57 pm

1 stop6h 49m

Ontario

Mon 5/12

8:24 am-1:32 pm

1 stop5h 08m

$158

TucsonOntario

TUS - ONT

TUSONT

Tucson

Thu 5/8

12:17 pm-11:59 pm

1 stop11h 42m

Ontario

Sat 5/10

12:59 am-11:06 am

1 stop10h 07m

$160

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

Sat 5/17

12:14 pm-6:23 pm

1 stop6h 09m

Ontario

Sun 5/18

6:01 am-8:58 am

1 stop2h 57m

$215

TucsonOntario

TUS - ONT

TUSONT

Tucson

Tue 7/1

4:55 pm-11:21 pm

1 stop6h 26m

Ontario

Sat 7/5

6:00 am-10:35 am

1 stop4h 35m

$237

TucsonOntario

TUS - ONT

TUSONT

Tucson

Thu 5/8

12:17 pm-11:59 pm

1 stop11h 42m

Ontario

Sat 5/10

4:29 pm-11:18 pm

1 stop6h 49m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 37 results
1
2
3
4

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, 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 $328). 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 April 17, 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 April 17, 2025.

The most flights from USAZ to ONT are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 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 April 17, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,887 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 ($34), Southwest ($49), and United Airlines ($79).

  • 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: Envoy Air (91%), British Airways (84%), Southwest (80%).

  • What are the cheapest flights from Arizona to Ontario?

    Looking at all options, your cheapest flight can be booked for $63. While the most popular route (Phoenix Sky Harbor Intl - Ontario) can be booked for $97 on average our data indicates $213 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 $328). 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 Arizona to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Newark to Las Vegas flights
O'Hare Intl to Las Vegas flights
Seattle to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
LaGuardia to Los Angeles flights
Hobby to Las Vegas flights
San Jose to Los Angeles flights
Newark to San Francisco flights
Denver to Las Vegas flights
LaGuardia to Las Vegas flights
Seattle to Las Vegas flights
Los Angeles to Las Vegas flights
Reagan-National to Los Angeles flights
Boston to Las Vegas flights
Boston to Los Angeles flights
Dulles Intl to Las Vegas flights
San Francisco to Los Angeles flights
Santa Ana to Las Vegas flights
Atlanta to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
San Francisco to Las Vegas flights
Los Angeles to San Jose flights
Burbank to Las Vegas flights
George Bush Intcntl to Las Vegas flights
Dulles Intl to Los Angeles flights
Los Angeles to San Francisco flights
Oakland to Los Angeles flights
Los Angeles to Oakland flights
Dulles Intl to San Francisco flights
Seattle to San Diego flights
Oakland to Las Vegas flights
Reagan-National to Las Vegas flights
San Francisco to Ontario flights
Newark to Burbank flights
LaGuardia to San Francisco flights
Midway to Las Vegas flights
Baltimore to Las Vegas flights
O'Hare Intl to San Francisco flights
Seattle to Santa Ana flights
O'Hare Intl to Los Angeles flights
Oakland to Santa Ana flights
Dallas/Fort Worth to San Francisco flights
Boston to San Francisco flights
John F Kennedy Intl to Ontario flights
John F Kennedy Intl to San Diego flights
Minneapolis to Las Vegas flights

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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$39Average$98FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$119Average$317FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$129Average$260FlexibilityNo cancel feeOn-time63%

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.