HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$41+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
mai 23 — mai 301
lø. 5/23
lø. 5/30
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

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 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
on. 5/277:00 am
LAS
-
ONT
Nonstop1h 04m
Frontier
ti. 6/24:39 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 4/21$55
This Frontier deal was found by Cheapflights users on 4/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 6/22:32 pm
LAS
-
ONT
Nonstop1h 12m
Frontier
on. 6/34:39 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 4/20$56
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fr. 5/227:00 am
LAS
-
ONT
Nonstop1h 04m
Frontier
sø. 5/2411:51 am
ONT
-
LAS
Nonstop1h 11m
Frontier
Deal found 4/20$57
This Booking.com deal was found by Cheapflights users on 4/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 5/141:59 pm
LAS
-
ONT
Nonstop1h 10m
Frontier
sø. 5/174:04 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 4/20$58
This Frontier deal was found by Cheapflights users on 4/21. 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.
ti. 5/52:32 pm
LAS
-
ONT
Nonstop1h 12m
Frontier
ti. 5/261:39 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 4/21$62
This Booking.com deal was found by Cheapflights users on 4/21. 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.
to. 5/71:59 pm
LAS
-
ONT
Nonstop1h 10m
Frontier
on. 5/134:39 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 4/21$63
This Super.com deal was found by Cheapflights users on 4/22. 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.
ti. 6/96:43 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
ti. 6/231:33 pm
ONT
-
LAS
Nonstop1h 11m
Frontier
Deal found 4/22$66
This Frontier deal was found by Cheapflights users on 4/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fr. 6/126:43 pm
LAS
-
ONT
Nonstop1h 08m
Frontier
on. 6/171:33 pm
ONT
-
LAS
Nonstop1h 11m
Frontier
Deal found 4/20$67
This Expedia deal was found by Cheapflights users on 4/21. 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.
fr. 5/86:45 am
LAS
-
ONT
Nonstop1h 04m
Frontier
sø. 5/104:04 pm
ONT
-
LAS
Nonstop1h 10m
Frontier
Deal found 4/21$68
This Super.com deal was found by Cheapflights users on 4/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
on. 5/277:00 am
LAS
-
ONT
Nonstop1h 04m
Frontier
ma. 6/13:30 pm
ONT
-
LAS
Nonstop1h 13m
Frontier
Deal found 4/19$75
This Frontier deal was found by Cheapflights users on 4/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma. 5/119:52 am
PHX
-
ONT
1 stop9h 40m
Frontier
to. 5/144:04 pm
ONT
-
PHX
1 stop7h 20m
Frontier
Deal found 4/20$140
This Frontier deal was found by Cheapflights users on 4/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 5/910:27 pm
PHX
-
ONT
1 stop16h 42m
Frontier
ma. 5/1111:36 am
ONT
-
PHX
1 stop11h 48m
Frontier
Deal found 4/18$141

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 april 23, 2026.

Round-trip from

$55
(Kiwi.com)

One-way from

$41
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$177

Good round-trip deal

$238 or less

Good one-way deal

$169 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 April 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 april 23, 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

Cheapest round-trip

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

ti. 5/26

6:05 am-10:25 am

1 stop4h 20m

Ontario

ti. 6/2

2:25 pm-3:40 pm

Nonstop1h 15m

$201

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

fr. 6/19

6:20 pm-10:37 pm

1 stop4h 17m

Ontario

sø. 6/21

6:00 am-10:24 am

1 stop4h 24m

$227

TucsonOntario

TUS - ONT

TUSONT

Tucson

on. 6/3

7:10 am-12:19 pm

1 stop5h 09m

Ontario

on. 6/10

6:00 am-10:36 am

1 stop4h 36m

$233

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

lø. 5/23

2:25 pm-7:20 pm

1 stop4h 55m

Ontario

lø. 5/30

9:25 am-3:40 pm

2 stops6h 15m

$235

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

ti. 5/12

8:30 am-11:35 am

1 stop3h 05m

Ontario

ti. 5/19

2:25 pm-3:40 pm

Nonstop1h 15m

$253

TucsonOntario

TUS - ONT

TUSONT

Tucson

on. 6/3

4:52 pm-11:34 pm

1 stop6h 42m

Ontario

lø. 6/6

6:00 am-10:24 am

1 stop4h 24m

$256
Quickest round-trip

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

sø. 5/17

7:30 am-8:30 am

Nonstop1h 00m

Ontario

sø. 5/17

6:30 pm-7:35 pm

Nonstop1h 05m

$268

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

on. 7/8

12:45 pm-6:35 pm

2 stops5h 50m

Ontario

to. 7/9

6:35 pm-9:50 pm

1 stop3h 15m

$285

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

ti. 5/12

10:40 am-11:55 am

Nonstop1h 15m

Ontario

ti. 5/12

3:45 pm-9:10 pm

2 stops5h 25m

$286

Las VegasOntario

LAS - ONT

LASONT

Las Vegas Harry Reid Intl

lø. 5/30

1:25 pm-7:10 pm

2 stops5h 45m

Ontario

sø. 5/31

5:15 am-9:05 am

1 stop3h 50m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/18

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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, December is the cheapest month in which you can book a flight from Arizona to Ontario (average of $58). Flying from Arizona to Ontario in February is currently the most expensive (average of $128). 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 23, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 11% 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 April 18, 2026.

Travelers seeking maximum savings on their Arizona to Ontario flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday 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 april 23, 2026.

The most flights from USAZ to ONT are scheduled on a Tuesday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

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

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 $227, Southwest can have you in Ontario from Arizona in 4h 17m. Arizona and Ontario are separated by a distance of 197 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 ($48), and Frontier ($67).

  • 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 (100%), British Airways (92%), American Airlines (84%).

  • What are the cheapest flights from Arizona to Ontario?

    Looking at all options, your cheapest flight can be booked for $24. While the most popular route (Phoenix Sky Harbor Intl - Ontario) can be booked for $162 on average, our data indicates $267 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, December is the cheapest month in which you can book a flight from Arizona to Ontario (average of $58). Flying from Arizona to Ontario in February is currently the most expensive (average of $128). 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 San Francisco flights
Newark to San Francisco flights
LaGuardia to San Francisco flights
Newark to Las Vegas flights
John F Kennedy Intl to Las Vegas flights
Newark to Los Angeles flights
John F Kennedy Intl to Los Angeles flights
Seattle to Las Vegas flights
San Francisco to Las Vegas flights
O'Hare Intl to Las Vegas flights
Seattle to Los Angeles flights
San Francisco to Los Angeles flights
Dallas/Fort Worth to Los Angeles flights
Los Angeles to San Francisco flights
LaGuardia to Los Angeles flights
Dulles Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
LaGuardia to Las Vegas flights
Atlanta to Las Vegas flights
Denver to Las Vegas flights
Los Angeles to Las Vegas flights
Seattle to San Francisco flights
Dallas/Fort Worth to San Francisco flights
San Francisco to Ontario flights
Reagan-National to Los Angeles flights
Baltimore to Los Angeles flights
O'Hare Intl to Los Angeles flights
San Francisco to Santa Ana flights
Burbank to Las Vegas flights
Ontario to San Francisco flights
Boston to Las Vegas flights
Santa Ana to Las Vegas flights
Baltimore to Las Vegas flights
Stewart to San Francisco flights
Reagan-National to Las Vegas flights
O'Hare Intl to San Francisco flights
Minneapolis to Las Vegas flights
San Jose to Los Angeles flights
Dulles Intl to San Francisco flights
Seattle to San Diego flights
Dulles Intl to Los Angeles flights
Boston to Los Angeles flights
Detroit to Las Vegas flights
Seattle to Ontario flights
Atlanta to Los Angeles flights
Orlando to Las Vegas flights
Seattle to Santa Ana flights
Boston to San Francisco flights
Ontario to Las Vegas flights
Philadelphia 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 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$181FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$97Average$320FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$97Average$314FlexibilityNo 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.