What is the cheapest airline that flies from Ontario to Phoenix?

Southwest and United Airlines are the most popular carriers operating from Ontario to Phoenix

How many flights depart from Ontario to Phoenix on average per week?

The number of flights available between Ontario and Phoenix is 56 per week as of August 2026. The most frequent departure day is Sun, with 23% of weekly flights leaving on this day.

What airlines fly to Phoenix?

Frontier, Southwest and American Airlines are the top three most popular airlines that fly to Phoenix from Ontario according to our data. Frontier is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Phoenix. Keep in mind that there are 8 different airlines that fly to Phoenix on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ontario to Phoenix on average per day?

As of August 2026, 8 flights take off from Ontario and land in Phoenix each day. The most common flight departure time for this route is 12:00PM, with 70% of daily flights taking off in the afternoon.

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?

As of August 2026, there are 4 operators available to choose from 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.

$59 Cheap Flights from Ontario to Phoenix in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Phoenix

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:35 pm - 12:17 pmONT Ontario-PHX Phoenix Sky Harbor Intl

15h 42m1 stop Las Vegas Harry Reid Intl

8:51 pm - 10:29 amPHX Phoenix Sky Harbor Intl-ONT Ontario

13h 38m1 stop Denver Intl

$119Frontier

Thu, Oct 15 - Mon, Oct 19

2:30 pm - 10:47 pmONT Ontario-PHX Phoenix Sky Harbor Intl

8h 17m1 stop Las Vegas Harry Reid Intl

1:32 pm - 7:36 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

6h 04m1 stop San Francisco

$119Frontier

Sat, Sep 19 - Mon, Sep 21

8:35 pm - 12:17 pmONT Ontario-PHX Phoenix Sky Harbor Intl

15h 42m1 stop Las Vegas Harry Reid Intl

7:38 pm - 9:40 amPHX Phoenix Sky Harbor Intl-ONT Ontario

14h 02m1 stop Las Vegas Harry Reid Intl

$119Frontier

Thu, Oct 22 - Mon, Oct 26

11:00 am - 5:05 pmONT Ontario-PHX Phoenix Sky Harbor Intl

6h 05m1 stop San Jose

7:45 am - 9:00 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 15mnonstop

$127Southwest

Thu, Oct 8 - Sat, Oct 10

6:20 am - 11:00 amONT Ontario-PHX Phoenix Sky Harbor Intl

4h 40m1 stop San Jose

7:45 am - 9:00 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 15mnonstop

$127Southwest

Wed, Oct 7 - Sat, Oct 10

10:25 am - 5:35 pmONT Ontario-PHX Phoenix Sky Harbor Intl

6h 10m1 stop Oakland

10:30 am - 10:50 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 20mnonstop

$127Southwest

Tue, Nov 10 - Thu, Nov 12

1:05 pm - 2:26 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 21mnonstop

8:15 am - 8:39 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 24mnonstop

$134American Airlines

Fri, Oct 30 - Mon, Nov 2

7:30 pm - 9:51 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 21mnonstop

6:05 pm - 6:20 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 15mnonstop

$134American Airlines

Fri, Jan 8 - Mon, Jan 11

6:53 pm - 12:55 amONT Ontario-PHX Phoenix Sky Harbor Intl

5h 02m1 stop San Francisco

8:07 am - 12:20 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

5h 13m1 stop San Francisco

$171United Airlines

Fri, Jan 8 - Mon, Jan 11

6:53 pm - 12:55 amONT Ontario-PHX Phoenix Sky Harbor Intl

5h 02m1 stop San Francisco

4:30 pm - 8:20 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

4h 50m1 stop Denver Intl

$241United Airlines

Fri, Feb 5 - Sat, Feb 13

Cheap last minute flights

Enter your travel dates to find the best prices.

3:40 pm - 11:24 pmONT Ontario-PHX Phoenix Sky Harbor Intl

7h 44m1 stop Las Vegas Harry Reid Intl

9:20 am - 6:16 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

8h 56m1 stop Dallas/Fort Worth

$209Frontier

Fri, Sep 4 - Wed, Sep 30

7:56 pm - 7:40 amONT Ontario-PHX Phoenix Sky Harbor Intl

11h 44m1 stop Denver Intl

8:30 am - 4:34 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

8h 04m1 stop Las Vegas Harry Reid Intl

$209Frontier

Sat, Sep 5 - Sat, Sep 19

3:15 pm - 4:35 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 20mnonstop

2:05 pm - 3:15 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 10mnonstop

$239Southwest

Sat, Sep 5 - Sat, Sep 19

10:35 am - 2:40 pmONT Ontario-PHX Phoenix Sky Harbor Intl

4h 05m1 stop Sacramento Intl

2:05 pm - 3:15 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 10mnonstop

$249Southwest

Sat, Sep 5 - Sat, Sep 19

3:40 pm - 11:24 pmONT Ontario-PHX Phoenix Sky Harbor Intl

7h 44m1 stop Las Vegas Harry Reid Intl

3:21 pm - 11:47 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

8h 26m1 stop Denver Intl

$254Frontier

Wed, Sep 2 - Wed, Oct 7

5:50 am - 3:15 pmONT Ontario-PHX Phoenix Sky Harbor Intl

9h 25m2 stops Las Vegas Harry Reid Intl San Diego

11:05 am - 3:15 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

4h 10m1 stop Las Vegas Harry Reid Intl

$264Southwest

Sat, Sep 5 - Sat, Sep 19

12:59 pm - 2:25 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 26mnonstop

6:04 pm - 7:15 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 11mnonstop

$361American Airlines

Sat, Sep 5 - Sun, Sep 6

12:59 pm - 2:25 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 26mnonstop

6:04 pm - 7:15 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 11mnonstop

$361American Airlines

Sat, Sep 5 - Sun, Sep 6

1:56 pm - 6:49 pmONT Ontario-PHX Phoenix Sky Harbor Intl

4h 53m1 stop San Francisco

1:12 pm - 8:01 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

6h 49m1 stop San Francisco

$539United Airlines

Tue, Sep 1 - Thu, Sep 3

6:08 am - 10:26 amONT Ontario-PHX Phoenix Sky Harbor Intl

4h 18m1 stop San Francisco

1:12 pm - 6:11 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

4h 59m1 stop San Francisco

$583United Airlines

Thu, Sep 3 - Thu, Sep 3

Cheap direct flights

Enter your travel dates to find the best prices.

1:05 pm - 2:26 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 21mnonstop

8:15 am - 8:39 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 24mnonstop

$134American Airlines

Fri, Oct 30 - Mon, Nov 2

7:30 pm - 9:51 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 21mnonstop

6:05 pm - 6:20 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 15mnonstop

$134American Airlines

Fri, Jan 8 - Mon, Jan 11

4:15 pm - 5:35 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 20mnonstop

8:10 pm - 9:20 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 10mnonstop

$134Southwest

Fri, Oct 23 - Mon, Oct 26

8:40 pm - 10:00 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 20mnonstop

8:05 am - 9:20 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 15mnonstop

$134Southwest

Mon, Sep 21 - Fri, Sep 25

6:55 pm - 8:10 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 15mnonstop

7:45 am - 9:00 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 15mnonstop

$134Southwest

Thu, Oct 8 - Sat, Oct 10

6:55 pm - 8:10 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 15mnonstop

10:35 pm - 11:50 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 15mnonstop

$134Southwest

Fri, Oct 16 - Mon, Oct 19

5:00 pm - 6:20 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 20mnonstop

10:35 pm - 11:45 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 10mnonstop

$134Southwest

Tue, Oct 6 - Fri, Oct 9

5:15 am - 6:30 amONT Ontario-PHX Phoenix Sky Harbor Intl

1h 15mnonstop

12:15 pm - 1:25 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 10mnonstop

$151Southwest

Fri, Sep 18 - Fri, Sep 18

7:34 pm - 8:59 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 25mnonstop

8:36 am - 9:00 amPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 24mnonstop

$187American Airlines

Mon, Oct 5 - Wed, Nov 4

1:04 pm - 2:25 pmONT Ontario-PHX Phoenix Sky Harbor Intl

1h 21mnonstop

3:11 pm - 3:35 pmPHX Phoenix Sky Harbor Intl-ONT Ontario

1h 24mnonstop

$187American Airlines

Wed, Sep 30 - Thu, Nov 5

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Frontier flights from Ontario to Phoenix

Our best Frontier deals on Ontario to Phoenix flight tickets

Frontier

Sep 19

ONT2:30 pmOntario

8h 17m

1 stop

PHX10:47 pmPhoenix Sky Harbor Intl

Sep 21

PHX1:32 pmPhoenix Sky Harbor Intl

6h 04m

1 stop

ONT7:36 pmOntario

$119

Frontier

Oct 20

ONT11:26 amOntario

4h 03m

1 stop

PHX3:29 pmPhoenix Sky Harbor Intl

Oct 21

PHX6:22 pmPhoenix Sky Harbor Intl

5h 28m

1 stop

ONT11:50 pmOntario

$121

Frontier

Nov 10

ONT11:52 amOntario

8h 02m

1 stop

PHX8:54 pmPhoenix Sky Harbor Intl

Nov 12

PHX8:30 amPhoenix Sky Harbor Intl

3h 46m

1 stop

ONT11:16 amOntario

$123

Southwest flights from Ontario to Phoenix

Our best Southwest deals on Ontario to Phoenix flight tickets

Southwest

Sep 23

ONT1:15 pmOntario

4h 30m

1 stop

PHX5:45 pmPhoenix Sky Harbor Intl

Sep 30

PHX9:00 amPhoenix Sky Harbor Intl

1h 25m

ONT10:25 amOntario

$127

Southwest

Dec 7

ONT3:05 pmOntario

5h 20m

2 stops

PHX9:25 pmPhoenix Sky Harbor Intl

Dec 9

PHX11:45 amPhoenix Sky Harbor Intl

1h 25m

ONT12:10 pmOntario

$132

Southwest

Nov 10

ONT3:05 pmOntario

5h 20m

2 stops

PHX9:25 pmPhoenix Sky Harbor Intl

Nov 12

PHX1:25 pmPhoenix Sky Harbor Intl

5h 25m

1 stop

ONT5:50 pmOntario

$142

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Thu 10/15

8:35 pm-12:17 pm

1 stop15h 42m

Phoenix Sky Harbor Intl

Mon 10/19

8:51 pm-10:29 am

1 stop13h 38m

$119

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Sat 9/19

2:30 pm-10:47 pm

1 stop8h 17m

Phoenix Sky Harbor Intl

Mon 9/21

1:32 pm-7:36 pm

1 stop6h 04m

$119

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Thu 10/22

8:35 pm-12:17 pm

1 stop15h 42m

Phoenix Sky Harbor Intl

Mon 10/26

7:38 pm-9:40 am

1 stop14h 02m

$119

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Thu 10/8

11:00 am-5:05 pm

1 stop6h 05m

Phoenix Sky Harbor Intl

Sat 10/10

7:45 am-9:00 am

Nonstop1h 15m

$127

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Wed 10/7

6:20 am-11:00 am

1 stop4h 40m

Phoenix Sky Harbor Intl

Sat 10/10

7:45 am-9:00 am

Nonstop1h 15m

$127

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Tue 11/10

10:25 am-5:35 pm

1 stop6h 10m

Phoenix Sky Harbor Intl

Thu 11/12

10:30 am-10:50 am

Nonstop1h 20m

$127

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Fri 10/30

1:05 pm-2:26 pm

Nonstop1h 21m

Phoenix Sky Harbor Intl

Mon 11/2

8:15 am-8:39 am

Nonstop1h 24m

$134

Quickest round-trip

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Fri 1/8

7:30 pm-9:51 pm

Nonstop1h 21m

Phoenix Sky Harbor Intl

Mon 1/11

6:05 pm-6:20 pm

Nonstop1h 15m

$134

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Fri 1/8

6:53 pm-12:55 am

1 stop5h 02m

Phoenix Sky Harbor Intl

Mon 1/11

8:07 am-12:20 pm

1 stop5h 13m

$171

OntarioPhoenix

ONT Ontario - PHX Phoenix Sky Harbor Intl

ONTPHX

Ontario

Fri 2/5

6:53 pm-12:55 am

1 stop5h 02m

Phoenix Sky Harbor Intl

Sat 2/13

4:30 pm-8:20 pm

1 stop4h 50m

$241

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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

Prices are currently low for flights on this route.

Typical prices usually range from $150 to $323.
The lowest price recently found on this route was $119.

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 October is also very affordable. Most momondo users find prices during this month for around $241.

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 $249. 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 $328.

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 $207. In the morning is when there is more demand to fly to Phoenix, so prices are often more expensive at around $303 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 $298 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 $188 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

Best Price Found	$59
Fastest flight time	1h 15m
Direct flights	Every day
Airports in Phoenix	3 airports

The best one-way flight to Phoenix from Ontario in the past 72 hours is $59. The best round-trip flight deal from Ontario to Phoenix found on momondo in the last 72 hours is $119.

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?
As of August 2026, there are 4 operators available to choose from 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
Frontier	PriceFrom $59	Free Cancellation	Rating 5.6 2,634 reviews	Search Frontier flights
Southwest	PriceFrom $121	Free Cancellation	Rating 8.0 4,195 reviews	Search Southwest flights
American Airlines	PriceFrom $152	Free Cancellation	Rating 7.1 12,019 reviews	Search American Airlines flights
JetBlue	PriceFrom $228	Free Cancellation	Rating 7.1 3,034 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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Fly into one of these airports located in Phoenix

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Cheap flights from Ontario to Phoenix from $59

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 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Ontario to Phoenix

Our best Frontier deals on Ontario to Phoenix flight tickets

Southwest flights from Ontario to Phoenix

Our best Southwest deals on Ontario to Phoenix flight tickets

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How to get the cheapest flight ticket from Ontario to Phoenix

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

What is the cheapest month to fly to Phoenix?

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

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

What is the cheapest Ontario to Phoenix flight route?

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

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

What is the cheapest airline that flies from Ontario to Phoenix?

What airlines fly to Phoenix?

How many flights depart from Ontario to Phoenix on average per day?

How many flights depart from Ontario to Phoenix on average per week?

Cheap Ontario to Phoenix flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Phoenix

Frequently asked questions about flying from Ontario to Phoenix

Best airlines flying from Ontario to Phoenix

Compare and see reviews for airlines that fly from Ontario to Phoenix with momondo

Why use momondo?

An easier way to manage your Phoenix trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favorite airline to Phoenix

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Ontario

According to popular flight searches on momondo this year

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