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Cheap flights from Ontario to Arizona from $29

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 4/7. 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

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Find the cheapest flights from Ontario to Arizona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:09 pm - 2:19 pm
ONT
-
LAS
1h 10mnonstop
Frontier Logo
5:41 pm - 6:49 pm
LAS
-
ONT
1h 08mnonstop
$60Frontier
Tue, Apr 7 - Wed, Apr 15
Frontier Logo
1:09 pm - 2:19 pm
ONT
-
LAS
1h 10mnonstop
Frontier Logo
9:30 am - 10:44 am
LAS
-
ONT
1h 14mnonstop
$61Frontier
Tue, Apr 7 - Tue, Apr 14
Frontier Logo
11:44 am - 12:59 pm
ONT
-
LAS
1h 15mnonstop
Frontier Logo
5:41 pm - 6:49 pm
LAS
-
ONT
1h 08mnonstop
$65Frontier
Wed, Apr 15 - Wed, Apr 22
Frontier Logo
7:44 pm - 8:54 pm
ONT
-
LAS
1h 10mnonstop
Frontier Logo
9:30 am - 10:44 am
LAS
-
ONT
1h 14mnonstop
$66Frontier
Tue, Apr 14 - Tue, Apr 21
Frontier Logo
4:52 pm - 6:02 pm
ONT
-
LAS
1h 10mnonstop
Frontier Logo
10:30 am - 11:39 am
LAS
-
ONT
1h 09mnonstop
$71Frontier
Wed, Apr 8 - Sat, Apr 11
Southwest Logo
5:05 pm - 10:10 pm
ONT
-
PHX
5h 05m
1 stop
Southwest Logo
9:35 am - 10:55 am
PHX
-
ONT
1h 20mnonstop
$147Southwest
Fri, Apr 17 - Fri, Apr 24
Southwest Logo
3:55 pm - 9:15 pm
ONT
-
PHX
5h 20m
2 stops
Southwest Logo
9:35 am - 10:55 am
PHX
-
ONT
1h 20mnonstop
$152Southwest
Thu, May 7 - Mon, May 11
Alaska Airlines Logo
7:59 pm - 11:47 am
ONT
-
TUS
15h 48m
1 stop
Alaska Airlines Logo
12:43 pm - 9:45 am
TUS
-
ONT
21h 02m
1 stop
$287Alaska Airlines
Fri, May 8 - Mon, May 11
American Airlines Logo
7:59 pm - 11:07 pm
ONT
-
FLG
3h 08m
1 stop
American Airlines Logo
6:21 am - 11:34 am
FLG
-
ONT
5h 13m
1 stop
$406American Airlines
Sun, Apr 5 - Tue, Apr 7
American Airlines Logo
12:19 pm - 4:31 pm
ONT
-
FLG
4h 12m
1 stop
American Airlines Logo
5:01 pm - 9:59 pm
FLG
-
ONT
4h 58m
1 stop
$476American Airlines
Sat, May 16 - Sun, May 17

Frontier flights from Ontario to Arizona

Our best Frontier deals on Ontario to Arizona flight tickets
Frontier
Apr 7
ONT1:09 pmOntario
1h 10m
LAS2:19 pmLas Vegas Harry Reid Intl
Apr 15
LAS5:41 pmLas Vegas Harry Reid Intl
1h 08m
ONT6:49 pmOntario
$60
Frontier
Apr 7
ONT1:09 pmOntario
1h 10m
LAS2:19 pmLas Vegas Harry Reid Intl
Apr 14
LAS9:30 amLas Vegas Harry Reid Intl
1h 14m
ONT10:44 amOntario
$61
Frontier
Apr 15
ONT11:44 amOntario
1h 15m
LAS12:59 pmLas Vegas Harry Reid Intl
Apr 22
LAS5:41 pmLas Vegas Harry Reid Intl
1h 08m
ONT6:49 pmOntario
$65

Southwest flights from Ontario to Arizona

Our best Southwest deals on Ontario to Arizona flight tickets
Southwest
Apr 17
ONT5:05 pmOntario
5h 05m
1 stop
PHX10:10 pmPhoenix Sky Harbor Intl
Apr 24
PHX9:35 amPhoenix Sky Harbor Intl
1h 20m
ONT10:55 amOntario
$147
Southwest
May 7
ONT3:55 pmOntario
5h 20m
2 stops
PHX9:15 pmPhoenix Sky Harbor Intl
May 11
PHX9:35 amPhoenix Sky Harbor Intl
1h 20m
ONT10:55 amOntario
$152
Southwest
Apr 9
ONT4:25 pmOntario
4h 00m
1 stop
PHX8:25 pmPhoenix Sky Harbor Intl
Apr 13
PHX6:10 pmPhoenix Sky Harbor Intl
4h 55m
1 stop
ONT11:05 pmOntario
$157

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 March 22, 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
Quickest round-trip

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 4/7

1:09 pm-2:19 pm

Nonstop1h 10m

Las Vegas Harry Reid Intl

Wed 4/15

5:41 pm-6:49 pm

Nonstop1h 08m

$60

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 4/7

1:09 pm-2:19 pm

Nonstop1h 10m

Las Vegas Harry Reid Intl

Tue 4/14

9:30 am-10:44 am

Nonstop1h 14m

$61

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Wed 4/15

11:44 am-12:59 pm

Nonstop1h 15m

Las Vegas Harry Reid Intl

Wed 4/22

5:41 pm-6:49 pm

Nonstop1h 08m

$65

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Tue 4/14

7:44 pm-8:54 pm

Nonstop1h 10m

Las Vegas Harry Reid Intl

Tue 4/21

9:30 am-10:44 am

Nonstop1h 14m

$66

OntarioLas Vegas

ONT - LAS

ONTLAS

Ontario

Wed 4/8

4:52 pm-6:02 pm

Nonstop1h 10m

Las Vegas Harry Reid Intl

Sat 4/11

10:30 am-11:39 am

Nonstop1h 09m

$71

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Fri 4/17

5:05 pm-10:10 pm

1 stop5h 05m

Phoenix Sky Harbor Intl

Fri 4/24

9:35 am-10:55 am

Nonstop1h 20m

$147

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Thu 5/7

3:55 pm-9:15 pm

2 stops5h 20m

Phoenix Sky Harbor Intl

Mon 5/11

9:35 am-10:55 am

Nonstop1h 20m

$152

OntarioTucson

ONT - TUS

ONTTUS

Ontario

Fri 5/8

7:59 pm-11:47 am

1 stop15h 48m

Tucson

Mon 5/11

12:43 pm-9:45 am

1 stop21h 02m

$287

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 4/5

7:59 pm-11:07 pm

1 stop3h 08m

Flagstaff Pulliam

Tue 4/7

6:21 am-11:34 am

1 stop5h 13m

$406

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sat 5/16

12:19 pm-4:31 pm

1 stop4h 12m

Flagstaff Pulliam

Sun 5/17

5:01 pm-9:59 pm

1 stop4h 58m

$476

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 September is, on average, the cheapest month to fly to Arizona from Ontario, with most prices found around $151. If you aren’t able to travel to Arizona during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $191.

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 $380. 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 $486.

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 $354. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $423 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 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 $262 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 $134 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

$204

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 $204. The best round-trip flight deal from Ontario to Arizona found on momondo in the last 72 hours is $356.
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

  • 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
5.7
3,022 reviews
Search Frontier flights
SouthwestPriceFrom $102Free CancellationRating
8.0
4,325 reviews
Search Southwest flights
American AirlinesPriceFrom $124Free CancellationRating
7.1
11,488 reviews
Search American Airlines flights
JetBluePriceFrom $228Free CancellationRating
7.2
2,909 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.

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Tue 4/21
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