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Cheap flights from Ontario to Phoenix from $57

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 Phoenix departing on 4/28. 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 Phoenix

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:04 pm - 11:24 pm
ONT
-
PHX
7h 20m
1 stop
Frontier Logo
7:40 am - 3:44 pm
PHX
-
ONT
8h 04m
1 stop
$140Frontier
Thu, May 7 - Wed, May 13
Frontier Logo
8:30 am - 6:35 pm
ONT
-
PHX
10h 05m
1 stop
Frontier Logo
10:27 pm - 8:04 am
PHX
-
ONT
9h 37m
1 stop
$141Frontier
Mon, May 18 - Mon, May 25
Frontier Logo
12:59 am - 7:36 am
ONT
-
PHX
6h 37m
1 stop
Frontier Logo
5:14 pm - 10:44 am
PHX
-
ONT
17h 30m
1 stop
$142Frontier
Wed, Apr 22 - Mon, Apr 27
Frontier Logo
4:39 pm - 11:24 pm
ONT
-
PHX
6h 45m
1 stop
Frontier Logo
2:14 pm - 11:06 am
PHX
-
ONT
20h 52m
1 stop
$145Frontier
Tue, May 19 - Sun, May 24
Frontier Logo
12:59 am - 7:36 am
ONT
-
PHX
6h 37m
1 stop
Frontier Logo
9:24 pm - 7:31 am
PHX
-
ONT
10h 07m
1 stop
$146Frontier
Wed, Apr 29 - Sun, May 3
American Airlines Logo
12:19 pm - 1:40 pm
ONT
-
PHX
1h 21mnonstop
American Airlines Logo
3:04 pm - 4:22 pm
PHX
-
ONT
1h 18mnonstop
$147American Airlines
Tue, May 5 - Thu, May 7
Frontier Logo
4:39 pm - 11:24 pm
ONT
-
PHX
6h 45m
1 stop
Frontier Logo
11:10 am - 11:49 pm
PHX
-
ONT
12h 39m
2 stops
$148Frontier
Wed, May 6 - Sat, May 9
Frontier Logo
12:59 am - 8:56 pm
ONT
-
PHX
19h 57m
2 stops
Frontier Logo
11:18 am - 8:04 pm
PHX
-
ONT
8h 46m
1 stop
$149Frontier
Wed, Apr 29 - Mon, May 4
Frontier Logo
11:44 am - 12:38 am
ONT
-
PHX
12h 54m
2 stops
Frontier Logo
8:07 pm - 10:44 am
PHX
-
ONT
14h 37m
1 stop
$150Frontier
Mon, Apr 27 - Tue, Apr 28
Frontier Logo
5:33 pm - 8:38 am
ONT
-
PHX
15h 05m
1 stop
Frontier Logo
7:20 pm - 8:04 am
PHX
-
ONT
12h 44m
1 stop
$151Frontier
Fri, May 1 - Sun, May 3

Frontier flights from Ontario to Phoenix

Our best Frontier deals on Ontario to Phoenix flight tickets
Frontier
May 7
ONT4:04 pmOntario
7h 20m
1 stop
PHX11:24 pmPhoenix Sky Harbor Intl
May 13
PHX7:40 amPhoenix Sky Harbor Intl
8h 04m
1 stop
ONT3:44 pmOntario
$140
Frontier
May 18
ONT8:30 amOntario
10h 05m
1 stop
PHX6:35 pmPhoenix Sky Harbor Intl
May 25
PHX10:27 pmPhoenix Sky Harbor Intl
9h 37m
1 stop
ONT8:04 amOntario
$141
Frontier
Apr 22
ONT12:59 amOntario
6h 37m
1 stop
PHX7:36 amPhoenix Sky Harbor Intl
Apr 27
PHX5:14 pmPhoenix Sky Harbor Intl
17h 30m
1 stop
ONT10:44 amOntario
$142

American Airlines flights from Ontario to Phoenix

Our best American Airlines deals on Ontario to Phoenix flight tickets
American Airlines
May 5
ONT12:19 pmOntario
1h 21m
PHX1:40 pmPhoenix Sky Harbor Intl
May 7
PHX3:04 pmPhoenix Sky Harbor Intl
1h 18m
ONT4:22 pmOntario
$147
American Airlines
May 7
ONT9:24 amOntario
1h 21m
PHX10:45 amPhoenix Sky Harbor Intl
May 9
PHX6:15 pmPhoenix Sky Harbor Intl
1h 19m
ONT7:34 pmOntario
$177
American Airlines
Apr 30
ONT7:35 pmOntario
1h 21m
PHX8:56 pmPhoenix Sky Harbor Intl
May 4
PHX3:04 pmPhoenix Sky Harbor Intl
1h 18m
ONT4:22 pmOntario
$178

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Phoenix 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 April 7, 2026.
Use the filters below to find and compare flights from Ontario to Phoenix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Thu 5/7

4:04 pm-11:24 pm

1 stop7h 20m

Phoenix Sky Harbor Intl

Wed 5/13

7:40 am-3:44 pm

1 stop8h 04m

$140

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 5/18

8:30 am-6:35 pm

1 stop10h 05m

Phoenix Sky Harbor Intl

Mon 5/25

10:27 pm-8:04 am

1 stop9h 37m

$141

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 4/22

12:59 am-7:36 am

1 stop6h 37m

Phoenix Sky Harbor Intl

Mon 4/27

5:14 pm-10:44 am

1 stop17h 30m

$142

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 5/19

4:39 pm-11:24 pm

1 stop6h 45m

Phoenix Sky Harbor Intl

Sun 5/24

2:14 pm-11:06 am

1 stop20h 52m

$145

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 4/29

12:59 am-7:36 am

1 stop6h 37m

Phoenix Sky Harbor Intl

Sun 5/3

9:24 pm-7:31 am

1 stop10h 07m

$146
Quickest round-trip

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 5/5

12:19 pm-1:40 pm

Nonstop1h 21m

Phoenix Sky Harbor Intl

Thu 5/7

3:04 pm-4:22 pm

Nonstop1h 18m

$147

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 5/6

4:39 pm-11:24 pm

1 stop6h 45m

Phoenix Sky Harbor Intl

Sat 5/9

11:10 am-11:49 pm

2 stops12h 39m

$148

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 4/29

12:59 am-8:56 pm

2 stops19h 57m

Phoenix Sky Harbor Intl

Mon 5/4

11:18 am-8:04 pm

1 stop8h 46m

$149

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 4/27

11:44 am-12:38 am

2 stops12h 54m

Phoenix Sky Harbor Intl

Tue 4/28

8:07 pm-10:44 am

1 stop14h 37m

$150

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Fri 5/1

5:33 pm-8:38 am

1 stop15h 05m

Phoenix Sky Harbor Intl

Sun 5/3

7:20 pm-8:04 am

1 stop12h 44m

$151

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 Phoenix from

How to get the cheapest flight ticket from Ontario to Phoenix

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 typical price of a round-trip flight between Ontario and Phoenix?

What is the cheapest month to fly to Phoenix?

If you are unable to visit Phoenix during the month of September, then departing from Ontario during the month August is also very affordable. Most momondo users find prices during this month for around $195.

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

On average, the least expensive day to fly to Phoenix from Ontario is on a Friday. momondo users have found tickets for Friday departures for as low as $217. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $321.

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

The cheapest time of day to fly to Phoenix is at noon when flights can be purchased for as low as $183. In the morning is when there is more demand to fly to Phoenix, so prices are often more expensive at around $282 per ticket.

What is the cheapest Ontario to Phoenix flight route?

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

How far in advance should I book a flight to Phoenix?

You are more likely to see cheaper flights to Phoenix from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix for around $260 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phoenix from Ontario for as low as $134 on momondo.

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

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

Cheap Ontario to Phoenix flight deals and tips

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

Fastest flight time

1h 15m

Direct flights

Every day

Airports in Phoenix

3 airports
The fastest flight from Ontario to Phoenix takes 1h 15m
Direct flights go from Ontario to Phoenix every day.
There are 3 airports in Phoenix. From Ontario there are direct flights to Phoenix Sky Harbor Intl (PHX).
Search flight deals

Frequently asked questions about flying from Ontario to Phoenix

  • How far is Ontario to Phoenix by plane?

    The straight-line distance from Ontario to Phoenix is 322.9 mi. By plane, this route typically takes 1h 15m.

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

    Prices for flights from Ontario Airport to Phoenix are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Phoenix.

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

    The travel and health documents you'll need for your trip to Phoenix may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Phoenix. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Phoenix

Compare and see reviews for airlines that fly from Ontario to Phoenix with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $79Free CancellationRating
5.7
3,000 reviews
Search Frontier flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,337 reviews
Search Southwest flights
American AirlinesPriceFrom $124Free CancellationRating
7.1
11,551 reviews
Search American Airlines flights
JetBluePriceFrom $228Free CancellationRating
7.2
2,921 reviews
Search JetBlue flights

Why use momondo?

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

It is quick and easy to find Ontario to Phoenix flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Phoenix that suits you.

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

Flights from Ontario to Phoenix 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 Phoenix?

Once all potential Ontario to Phoenix 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 Phoenix right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Phoenix flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United States

Fly into one of these airports located in Phoenix

Airports listed have a maximum distance of 25.4 mi from Phoenix
Phoenix-Mesa Gateway Airport