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Cheap flights from Ontario to Phoenix from $69

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 6/16. 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
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.
American Airlines Logo
7:15 pm - 8:36 pm
ONT
-
PHX
1h 21mnonstop
American Airlines Logo
5:04 pm - 6:18 pm
PHX
-
ONT
1h 14mnonstop
$137American Airlines
Tue, Jul 7 - Tue, Jul 14
American Airlines Logo
7:13 pm - 8:35 pm
ONT
-
PHX
1h 22mnonstop
American Airlines Logo
8:43 pm - 9:57 pm
PHX
-
ONT
1h 14mnonstop
$138American Airlines
Wed, Jun 17 - Tue, Jun 23
Frontier Logo
3:34 pm - 11:00 pm
ONT
-
PHX
7h 26m
1 stop
Frontier Logo
2:00 pm - 7:51 pm
PHX
-
ONT
5h 51m
1 stop
$142Frontier
Tue, Jun 23 - Tue, Jun 30
Frontier Logo
1:33 pm - 11:00 pm
ONT
-
PHX
9h 27m
1 stop
Frontier Logo
2:00 pm - 7:51 pm
PHX
-
ONT
5h 51m
1 stop
$143Frontier
Tue, Jun 23 - Tue, Jun 30
Frontier Logo
1:38 pm - 11:05 pm
ONT
-
PHX
9h 27m
1 stop
Frontier Logo
9:58 pm - 8:03 am
PHX
-
ONT
10h 05m
1 stop
$145Frontier
Tue, Jul 7 - Tue, Jul 14
Frontier Logo
1:33 pm - 11:00 pm
ONT
-
PHX
9h 27m
1 stop
Frontier Logo
2:00 pm - 7:51 pm
PHX
-
ONT
5h 51m
1 stop
$146Frontier
Wed, Jun 24 - Wed, Jul 1
Southwest Logo
4:05 pm - 8:30 pm
ONT
-
PHX
4h 25m
1 stop
Southwest Logo
9:50 pm - 11:00 pm
PHX
-
ONT
1h 10mnonstop
$147Southwest
Tue, Jun 23 - Tue, Jun 30
American Airlines Logo
7:13 pm - 8:35 pm
ONT
-
PHX
1h 22mnonstop
American Airlines Logo
8:43 pm - 9:57 pm
PHX
-
ONT
1h 14mnonstop
$149American Airlines
Tue, Jun 23 - Tue, Jun 30
Southwest Logo
5:15 am - 6:30 am
ONT
-
PHX
1h 15mnonstop
Southwest Logo
4:35 pm - 10:10 pm
PHX
-
ONT
5h 35m
2 stops
$152Southwest
Wed, Jul 29 - Wed, Jul 29
American Airlines Logo
12:55 pm - 3:18 pm
ONT
-
PHX
1h 23mnonstop
American Airlines Logo
9:45 pm - 9:59 pm
PHX
-
ONT
1h 14mnonstop
$157American Airlines
Wed, Nov 4 - Sat, Nov 7

Southwest flights from Ontario to Phoenix

Our best Southwest deals on Ontario to Phoenix flight tickets
Southwest
Jun 23
ONT4:05 pmOntario
4h 25m
1 stop
PHX8:30 pmPhoenix Sky Harbor Intl
Jun 30
PHX9:50 pmPhoenix Sky Harbor Intl
1h 10m
ONT11:00 pmOntario
$147
Southwest
Jul 29
ONT5:15 amOntario
1h 15m
PHX6:30 amPhoenix Sky Harbor Intl
Jul 29
PHX4:35 pmPhoenix Sky Harbor Intl
5h 35m
2 stops
ONT10:10 pmOntario
$152
Southwest
Jun 16
ONT3:30 pmOntario
5h 20m
1 stop
PHX8:50 pmPhoenix Sky Harbor Intl
Jul 7
PHX4:35 pmPhoenix Sky Harbor Intl
5h 35m
2 stops
ONT10:10 pmOntario
$162

Frontier flights from Ontario to Phoenix

Our best Frontier deals on Ontario to Phoenix flight tickets
Frontier
Jun 23
ONT3:34 pmOntario
7h 26m
1 stop
PHX11:00 pmPhoenix Sky Harbor Intl
Jun 30
PHX2:00 pmPhoenix Sky Harbor Intl
5h 51m
1 stop
ONT7:51 pmOntario
$142
Frontier
Jun 23
ONT1:33 pmOntario
9h 27m
1 stop
PHX11:00 pmPhoenix Sky Harbor Intl
Jun 30
PHX2:00 pmPhoenix Sky Harbor Intl
5h 51m
1 stop
ONT7:51 pmOntario
$143
Frontier
Jul 7
ONT1:38 pmOntario
9h 27m
1 stop
PHX11:05 pmPhoenix Sky Harbor Intl
Jul 14
PHX9:58 pmPhoenix Sky Harbor Intl
10h 05m
1 stop
ONT8:03 amOntario
$145

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 May 29, 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
Quickest round-trip

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 7/7

7:15 pm-8:36 pm

Nonstop1h 21m

Phoenix Sky Harbor Intl

Tue 7/14

5:04 pm-6:18 pm

Nonstop1h 14m

$137

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 6/17

7:13 pm-8:35 pm

Nonstop1h 22m

Phoenix Sky Harbor Intl

Tue 6/23

8:43 pm-9:57 pm

Nonstop1h 14m

$138

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 6/23

3:34 pm-11:00 pm

1 stop7h 26m

Phoenix Sky Harbor Intl

Tue 6/30

2:00 pm-7:51 pm

1 stop5h 51m

$142

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 6/23

1:33 pm-11:00 pm

1 stop9h 27m

Phoenix Sky Harbor Intl

Tue 6/30

2:00 pm-7:51 pm

1 stop5h 51m

$143

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 7/7

1:38 pm-11:05 pm

1 stop9h 27m

Phoenix Sky Harbor Intl

Tue 7/14

9:58 pm-8:03 am

1 stop10h 05m

$145

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 6/24

1:33 pm-11:00 pm

1 stop9h 27m

Phoenix Sky Harbor Intl

Wed 7/1

2:00 pm-7:51 pm

1 stop5h 51m

$146

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 6/23

4:05 pm-8:30 pm

1 stop4h 25m

Phoenix Sky Harbor Intl

Tue 6/30

9:50 pm-11:00 pm

Nonstop1h 10m

$147

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 6/23

7:13 pm-8:35 pm

Nonstop1h 22m

Phoenix Sky Harbor Intl

Tue 6/30

8:43 pm-9:57 pm

Nonstop1h 14m

$149

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 7/29

5:15 am-6:30 am

Nonstop1h 15m

Phoenix Sky Harbor Intl

Wed 7/29

4:35 pm-10:10 pm

2 stops5h 35m

$152

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 11/4

12:55 pm-3:18 pm

Nonstop1h 23m

Phoenix Sky Harbor Intl

Sat 11/7

9:45 pm-9:59 pm

Nonstop1h 14m

$157

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 January, then departing from Ontario during the month November is also very affordable. Most momondo users find prices during this month for around $49.

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 $224. 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 $322.

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 $190. In the afternoon is when there is more demand to fly to Phoenix, so prices are often more expensive at around $302 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 from Ontario 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 $263 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 $171 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
5.6
2,930 reviews
Search Frontier flights
SouthwestPriceFrom $114Free CancellationRating
8.0
4,265 reviews
Search Southwest flights
American AirlinesPriceFrom $124Free CancellationRating
7.1
11,645 reviews
Search American Airlines flights
JetBluePriceFrom $228Free CancellationRating
7.1
2,983 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