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Cheap flights from Ontario to Arizona from $38

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Arizona departing on 7/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Arizona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:34 pm - 4:46 pm
ONT
-
LAS
1h 12mnonstop
Frontier Logo
7:00 am - 8:03 am
LAS
-
ONT
1h 03mnonstop
$91Frontier
Sat, Jul 4 - Tue, Jul 14
Frontier Logo
3:40 pm - 4:51 pm
ONT
-
LAS
1h 11mnonstop
Frontier Logo
7:00 am - 8:03 am
LAS
-
ONT
1h 03mnonstop
$92Frontier
Sat, Sep 5 - Sun, Sep 6
Frontier Logo
3:40 pm - 4:51 pm
ONT
-
LAS
1h 11mnonstop
Frontier Logo
2:45 pm - 3:54 pm
LAS
-
ONT
1h 09mnonstop
$94Frontier
Tue, Sep 1 - Sat, Sep 5
Frontier Logo
3:40 pm - 4:51 pm
ONT
-
LAS
1h 11mnonstop
Frontier Logo
7:00 am - 8:03 am
LAS
-
ONT
1h 03mnonstop
$100Frontier
Tue, Sep 1 - Sat, Sep 5
American Airlines Logo
12:59 pm - 2:25 pm
ONT
-
PHX
1h 26mnonstop
American Airlines Logo
10:45 am - 12:03 pm
PHX
-
ONT
1h 18mnonstop
$117American Airlines
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
11:15 am - 2:20 pm
ONT
-
PHX
3h 05m
1 stop
Southwest Logo
8:50 pm - 10:05 pm
PHX
-
ONT
1h 15mnonstop
$123Southwest
Wed, Oct 28 - Wed, Oct 28
Southwest Logo
11:00 am - 3:40 pm
ONT
-
PHX
4h 40m
1 stop
Southwest Logo
12:55 pm - 2:05 pm
PHX
-
ONT
1h 10mnonstop
$127Southwest
Sat, Aug 8 - Wed, Aug 12
American Airlines Logo
6:15 am - 7:38 am
ONT
-
PHX
1h 23mnonstop
American Airlines Logo
5:02 pm - 6:15 pm
PHX
-
ONT
1h 13mnonstop
$148American Airlines
Sat, Aug 8 - Mon, Aug 10
Delta Logo
5:05 pm - 9:46 pm
ONT
-
TUS
4h 41m
1 stop
Delta Logo
7:12 am - 12:16 pm
TUS
-
ONT
5h 04m
1 stop
$322Delta
Sat, Aug 8 - Mon, Aug 10
Delta Logo
6:00 am - 10:30 am
ONT
-
TUS
4h 30m
1 stop
Delta Logo
4:31 pm - 11:34 pm
TUS
-
ONT
7h 03m
1 stop
$323Delta
Sat, Aug 8 - Mon, Aug 10

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Frontier flights from Ontario to Arizona

Our best Frontier deals on Ontario to Arizona flight tickets
Frontier
Jun 30
ONT1:33 pmOntario
1h 11m
LAS2:44 pmLas Vegas Harry Reid Intl
Jul 1
LAS6:43 pmLas Vegas Harry Reid Intl
1h 08m
ONT7:51 pmOntario
$81
Frontier
Jun 30
ONT1:33 pmOntario
1h 11m
LAS2:44 pmLas Vegas Harry Reid Intl
Jul 1
LAS6:43 pmLas Vegas Harry Reid Intl
1h 08m
ONT7:51 pmOntario
$82
Frontier
Jul 3
ONT3:34 pmOntario
1h 12m
LAS4:46 pmLas Vegas Harry Reid Intl
Jul 4
LAS1:55 pmLas Vegas Harry Reid Intl
1h 13m
ONT3:08 pmOntario
$85

Southwest flights from Ontario to Arizona

Our best Southwest deals on Ontario to Arizona flight tickets
Southwest
Oct 28
ONT11:15 amOntario
3h 05m
1 stop
PHX2:20 pmPhoenix Sky Harbor Intl
Oct 28
PHX8:50 pmPhoenix Sky Harbor Intl
1h 15m
ONT10:05 pmOntario
$123
Southwest
Aug 8
ONT5:50 amOntario
1h 15m
PHX7:05 amPhoenix Sky Harbor Intl
Aug 11
PHX7:20 amPhoenix Sky Harbor Intl
7h 05m
1 stop
ONT2:25 pmOntario
$127
Southwest
Aug 8
ONT10:15 amOntario
1h 15m
PHX11:30 amPhoenix Sky Harbor Intl
Aug 11
PHX7:10 amPhoenix Sky Harbor Intl
6h 25m
2 stops
ONT1:35 pmOntario
$132

momondo 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, momondo users made 832,500 searches. Data last updated June 24, 2026.
Use the filters below to find and compare flights from Ontario to Arizona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Sat 7/4

3:34 pm-4:46 pm

Nonstop1h 12m

Las Vegas Harry Reid Intl

Tue 7/14

7:00 am-8:03 am

Nonstop1h 03m

$91
Quickest round-trip

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Sat 9/5

3:40 pm-4:51 pm

Nonstop1h 11m

Las Vegas Harry Reid Intl

Sun 9/6

7:00 am-8:03 am

Nonstop1h 03m

$92

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 9/1

3:40 pm-4:51 pm

Nonstop1h 11m

Las Vegas Harry Reid Intl

Sat 9/5

2:45 pm-3:54 pm

Nonstop1h 09m

$94

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 9/1

3:40 pm-4:51 pm

Nonstop1h 11m

Las Vegas Harry Reid Intl

Sat 9/5

7:00 am-8:03 am

Nonstop1h 03m

$100

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sat 8/22

12:59 pm-2:25 pm

Nonstop1h 26m

Phoenix Sky Harbor Intl

Sat 8/29

10:45 am-12:03 pm

Nonstop1h 18m

$117

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 10/28

11:15 am-2:20 pm

1 stop3h 05m

Phoenix Sky Harbor Intl

Wed 10/28

8:50 pm-10:05 pm

Nonstop1h 15m

$123

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sat 8/8

11:00 am-3:40 pm

1 stop4h 40m

Phoenix Sky Harbor Intl

Wed 8/12

12:55 pm-2:05 pm

Nonstop1h 10m

$127

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sat 8/8

6:15 am-7:38 am

Nonstop1h 23m

Phoenix Sky Harbor Intl

Mon 8/10

5:02 pm-6:15 pm

Nonstop1h 13m

$148

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Sat 8/8

5:05 pm-9:46 pm

1 stop4h 41m

Tucson

Mon 8/10

7:12 am-12:16 pm

1 stop5h 04m

$322

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Sat 8/8

6:00 am-10:30 am

1 stop4h 30m

Tucson

Mon 8/10

4:31 pm-11:34 pm

1 stop7h 03m

$323

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Arizona from

How to get the cheapest flight ticket from Ontario to Arizona

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Arizona?

The month of January is, on average, the cheapest month to fly to Arizona from Ontario, with most prices found around $29. If you aren’t able to travel to Arizona during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $49.

What is the cheapest day to depart on your flight to Arizona?

On average, the least expensive day to fly to Arizona from Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $399. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Arizona is Sunday, with ticket prices averaging around $504.

What is the cheapest time of day to depart on your flight to Arizona?

Our most recent data shows that the best time of day to fly to Arizona is at noon. Flights from Ontario to Arizona during this time can be as low as $387. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $471 on average. Flights to Arizona from Ontario in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Ontario to Arizona flight route?

Fly from Ontario to Phoenix Sky Harbor Intl for the best Ontario - Arizona flight prices

How far in advance should I book a flight from Ontario to Arizona?

You are more likely to see cheaper flights to Arizona from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Arizona for around $269 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Arizona from Ontario for as low as $171 on momondo.

What cabin class options are available on Ontario to Arizona flights?

There are 4 cabin classes available to choose from on Ontario to Arizona flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ontario to Arizona flights?

No. A direct flight is the cheapest option for a flight between Ontario to Arizona.

Cheap Ontario to Arizona flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Arizona

Best Price Found

$177

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Arizona

66 airports
The best one-way flight to Arizona from Ontario in the past 72 hours is $177. The best round-trip flight deal from Ontario to Arizona found on momondo in the last 72 hours is $376.
The fastest flight from Ontario to Arizona takes 1h 05m
Direct flights go from Ontario to Arizona every day.
There are 66 airports in Arizona. From Ontario there are direct flights to Las Vegas Harry Reid Intl (LAS).
Search flight deals

Frequently asked questions about flying from Ontario to Arizona

  • When did momondo last update prices for flights from Ontario Airport to Arizona?

    Prices for flights from Ontario Airport to Arizona refresh daily.

  • How many operators does momondo search for flights from Ontario Airport to Arizona?

  • How old do you have to be to fly from Ontario Airport to Arizona?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Arizona.

  • What documentation or ID do you need to fly to Arizona?

    The travel and health documents required for your trip to Arizona can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Arizona. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Ontario to Arizona?

Best airlines flying from Ontario to Arizona

Compare and see reviews for airlines that fly from Ontario to Arizona with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $78Free CancellationRating
5.6
2,866 reviews
Search Frontier flights
SouthwestPriceFrom $114Free CancellationRating
7.9
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $125Free CancellationRating
7.1
11,754 reviews
Search American Airlines flights
JetBluePriceFrom $228Free CancellationRating
7.1
3,002 reviews
Search JetBlue flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Arizona?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Arizona. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Arizona with flexible booking policies on momondo?

Flights from Ontario to Arizona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Arizona?

Once all potential Ontario to Arizona flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Arizona right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Arizona, momondo offers a useful price alert feature which will track prices for flights to Arizona from Ontario and alert you when they change.

An easier way to manage your Arizona trip

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