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Cheap flights from Ontario to Phoenix from $58

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 5/27. 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
11:44 am - 10:18 pm
ONT
-
PHX
10h 34m
1 stop
Frontier Logo
9:15 am - 4:38 pm
PHX
-
ONT
7h 23m
1 stop
$138Frontier
Sat, Apr 25 - Mon, Apr 27
Frontier Logo
12:59 am - 7:36 am
ONT
-
PHX
6h 37m
1 stop
Frontier Logo
7:40 am - 3:09 pm
PHX
-
ONT
7h 29m
1 stop
$140Frontier
Wed, Apr 29 - Thu, May 7
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
$141Frontier
Wed, Apr 22 - Mon, Apr 27
Southwest Logo
3:30 pm - 7:45 pm
ONT
-
PHX
4h 15m
1 stop
Southwest Logo
2:50 pm - 8:50 pm
PHX
-
ONT
6h 00m
2 stops
$142Southwest
Wed, Apr 29 - Tue, May 12
Frontier Logo
12:59 am - 7:36 am
ONT
-
PHX
6h 37m
1 stop
Frontier Logo
7:40 am - 7:32 pm
PHX
-
ONT
11h 52m
1 stop
$146Frontier
Wed, Apr 29 - Fri, May 8
American Airlines Logo
7:35 pm - 8:56 pm
ONT
-
PHX
1h 21mnonstop
American Airlines Logo
5:05 pm - 6:24 pm
PHX
-
ONT
1h 19mnonstop
$147American Airlines
Thu, Apr 23 - Tue, Apr 28
Frontier Logo
8:20 pm - 11:50 am
ONT
-
PHX
15h 30m
1 stop
Frontier Logo
10:27 pm - 3:09 pm
PHX
-
ONT
16h 42m
1 stop
$149Frontier
Fri, May 1 - Wed, May 6
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 Logo
5:33 pm - 11:45 am
ONT
-
PHX
18h 12m
1 stop
Frontier Logo
5:16 am - 4:32 pm
PHX
-
ONT
11h 16m
1 stop
$152Frontier
Fri, May 1 - Mon, May 4
Southwest Logo
6:00 pm - 7:15 pm
ONT
-
PHX
1h 15mnonstop
Southwest Logo
8:30 am - 11:35 am
PHX
-
ONT
3h 05m
1 stop
$153Southwest
Thu, May 7 - Tue, May 12

Frontier flights from Ontario to Phoenix

Our best Frontier deals on Ontario to Phoenix flight tickets
Frontier
Apr 25
ONT11:44 amOntario
10h 34m
1 stop
PHX10:18 pmPhoenix Sky Harbor Intl
Apr 27
PHX9:15 amPhoenix Sky Harbor Intl
7h 23m
1 stop
ONT4:38 pmOntario
$138
Frontier
Apr 29
ONT12:59 amOntario
6h 37m
1 stop
PHX7:36 amPhoenix Sky Harbor Intl
May 7
PHX7:40 amPhoenix Sky Harbor Intl
7h 29m
1 stop
ONT3:09 pmOntario
$140
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
$141

American Airlines flights from Ontario to Phoenix

Our best American Airlines deals on Ontario to Phoenix flight tickets
American Airlines
Apr 23
ONT7:35 pmOntario
1h 21m
PHX8:56 pmPhoenix Sky Harbor Intl
Apr 28
PHX5:05 pmPhoenix Sky Harbor Intl
1h 19m
ONT6:24 pmOntario
$147
American Airlines
Apr 23
ONT7:35 pmOntario
1h 21m
PHX8:56 pmPhoenix Sky Harbor Intl
Apr 27
PHX8:42 pmPhoenix Sky Harbor Intl
1h 17m
ONT9:59 pmOntario
$177
American Airlines
May 2
ONT6:15 amOntario
1h 22m
PHX7:37 amPhoenix Sky Harbor Intl
May 7
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 2, 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

Sat 4/25

11:44 am-10:18 pm

1 stop10h 34m

Phoenix Sky Harbor Intl

Mon 4/27

9:15 am-4:38 pm

1 stop7h 23m

$138

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 4/29

12:59 am-7:36 am

1 stop6h 37m

Phoenix Sky Harbor Intl

Thu 5/7

7:40 am-3:09 pm

1 stop7h 29m

$140

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

$141

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 4/29

3:30 pm-7:45 pm

1 stop4h 15m

Phoenix Sky Harbor Intl

Tue 5/12

2:50 pm-8:50 pm

2 stops6h 00m

$142

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 4/29

12:59 am-7:36 am

1 stop6h 37m

Phoenix Sky Harbor Intl

Fri 5/8

7:40 am-7:32 pm

1 stop11h 52m

$146
Quickest round-trip

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Thu 4/23

7:35 pm-8:56 pm

Nonstop1h 21m

Phoenix Sky Harbor Intl

Tue 4/28

5:05 pm-6:24 pm

Nonstop1h 19m

$147

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Fri 5/1

8:20 pm-11:50 am

1 stop15h 30m

Phoenix Sky Harbor Intl

Wed 5/6

10:27 pm-3:09 pm

1 stop16h 42m

$149

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

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Fri 5/1

5:33 pm-11:45 am

1 stop18h 12m

Phoenix Sky Harbor Intl

Mon 5/4

5:16 am-4:32 pm

1 stop11h 16m

$152

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Thu 5/7

6:00 pm-7:15 pm

Nonstop1h 15m

Phoenix Sky Harbor Intl

Tue 5/12

8:30 am-11:35 am

1 stop3h 05m

$153

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 $214. 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 $317.

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 $184. In the morning is when there is more demand to fly to Phoenix, so prices are often more expensive at around $280 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 $262 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
3,004 reviews
Search Frontier flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,337 reviews
Search Southwest flights
American AirlinesPriceFrom $124Free CancellationRating
7.1
11,550 reviews
Search American Airlines flights
JetBluePriceFrom $228Free CancellationRating
7.2
2,910 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