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Cheap flights from Phoenix Sky Harbor Intl Airport to Los Angeles from $48

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix Sky Harbor Intl Airport to Los Angeles departing on 10/30. 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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Find the cheapest flights from Phoenix Sky Harbor Intl Airport to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:38 am - 8:42 pmPHX-ONT
10h 04m1 stop
Frontier Logo
6:00 am - 8:51 pmONT-PHX
13h 51m1 stop
$98Frontier
Find Deal
Tue, Nov 4 - Mon, Nov 17
Frontier Logo
7:01 am - 12:51 pmPHX-ONT
6h 50m1 stop
Frontier Logo
10:43 pm - 8:20 amONT-PHX
8h 37m1 stop
$99Frontier
Find Deal
Thu, Nov 6 - Sun, Nov 9
Frontier Logo
10:26 pm - 2:25 pmPHX-ONT
16h 59m1 stop
Frontier Logo
6:15 am - 6:31 pmONT-PHX
11h 16m1 stop
$116Frontier
Find Deal
Fri, Dec 5 - Tue, Dec 9
Frontier Logo
7:01 am - 12:51 pmPHX-ONT
6h 50m1 stop
Frontier Logo
6:00 am - 11:44 pmONT-PHX
16h 44m1 stop
$119Frontier
Find Deal
Fri, Nov 14 - Mon, Nov 17
Multiple Airlines Logo
5:16 pm - 8:42 pmPHX-ONT
28h 26m2 stops
Multiple Airlines Logo
6:00 am - 8:51 pmONT-PHX
13h 51m1 stop
$126Multiple Airlines
Find Deal
Tue, Nov 4 - Mon, Nov 17
Multiple Airlines Logo
7:01 am - 12:51 pmPHX-ONT
6h 50m1 stop
Multiple Airlines Logo
10:43 pm - 4:14 pmONT-PHX
16h 31m2 stops
$133Multiple Airlines
Find Deal
Thu, Nov 13 - Sun, Nov 16
Southwest Logo
6:25 am - 11:30 amPHX-ONT
6h 05m1 stop
Southwest Logo
3:25 pm - 5:40 pmONT-PHX
1h 15mnonstop
$161Southwest
Find Deal
Sat, Dec 13 - Sat, Dec 13
American Airlines Logo
3:48 pm - 4:02 pmPHX-ONT
1h 14mnonstop
American Airlines Logo
12:55 pm - 3:14 pmONT-PHX
1h 19mnonstop
$166American Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
Southwest Logo
6:25 am - 11:30 amPHX-ONT
6h 05m1 stop
Southwest Logo
2:10 pm - 7:25 pmONT-PHX
4h 15m1 stop
$171Southwest
Find Deal
Sat, Dec 13 - Sat, Dec 13
American Airlines Logo
3:48 pm - 4:02 pmPHX-ONT
1h 14mnonstop
American Airlines Logo
4:47 pm - 7:07 pmONT-PHX
1h 20mnonstop
$177American Airlines
Find Deal
Sat, Dec 13 - Mon, Dec 15

Frontier flights from Phoenix Sky Harbor Intl Airport to Ontario

Our best Frontier deals on Phoenix Sky Harbor Intl Airport to Ontario flight tickets
Frontier
Oct 28
PHX8:00 amPhoenix Sky Harbor Intl
12h 42m
1 stop
ONT8:42 pmOntario
Oct 29
ONT8:00 amOntario
10h 50m
1 stop
PHX6:50 pmPhoenix Sky Harbor Intl
$96
Find similar
Frontier
Nov 4
PHX11:38 amPhoenix Sky Harbor Intl
10h 04m
1 stop
ONT8:42 pmOntario
Nov 17
ONT6:00 amOntario
13h 51m
1 stop
PHX8:51 pmPhoenix Sky Harbor Intl
$98
Find similar
Frontier
Nov 6
PHX7:01 amPhoenix Sky Harbor Intl
6h 50m
1 stop
ONT12:51 pmOntario
Nov 9
ONT10:43 pmOntario
8h 37m
1 stop
PHX8:20 amPhoenix Sky Harbor Intl
$99
Find similar

Southwest flights from Phoenix Sky Harbor Intl Airport to Ontario

Our best Southwest deals on Phoenix Sky Harbor Intl Airport to Ontario flight tickets
Southwest
Dec 13
PHX6:25 amPhoenix Sky Harbor Intl
6h 05m
1 stop
ONT11:30 amOntario
Dec 13
ONT3:25 pmOntario
1h 15m
PHX5:40 pmPhoenix Sky Harbor Intl
$161
Find similar
Southwest
Dec 13
PHX6:25 amPhoenix Sky Harbor Intl
6h 05m
1 stop
ONT11:30 amOntario
Dec 13
ONT2:10 pmOntario
4h 15m
1 stop
PHX7:25 pmPhoenix Sky Harbor Intl
$171
Find similar
Southwest
Dec 5
PHX9:00 amPhoenix Sky Harbor Intl
1h 15m
ONT9:15 amOntario
Dec 9
ONT5:55 amOntario
1h 15m
PHX8:10 amPhoenix Sky Harbor Intl
$172
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Phoenix Sky Harbor Intl Airport to Ontario 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 October 23, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 11/4

11:38 am-8:42 pm

1 stop10h 04m

Ontario

Mon 11/17

6:00 am-8:51 pm

1 stop13h 51m

$98

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 11/6

7:01 am-12:51 pm

1 stop6h 50m

Ontario

Sun 11/9

10:43 pm-8:20 am

1 stop8h 37m

$99

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Fri 12/5

10:26 pm-2:25 pm

1 stop16h 59m

Ontario

Tue 12/9

6:15 am-6:31 pm

1 stop11h 16m

$116

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Fri 11/14

7:01 am-12:51 pm

1 stop6h 50m

Ontario

Mon 11/17

6:00 am-11:44 pm

1 stop16h 44m

$119

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 11/4

5:16 pm-8:42 pm

2 stops28h 26m

Ontario

Mon 11/17

6:00 am-8:51 pm

1 stop13h 51m

$126

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 11/13

7:01 am-12:51 pm

1 stop6h 50m

Ontario

Sun 11/16

10:43 pm-4:14 pm

2 stops16h 31m

$133

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 12/13

6:25 am-11:30 am

1 stop6h 05m

Ontario

Sat 12/13

3:25 pm-5:40 pm

Nonstop1h 15m

$161

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 12/6

3:48 pm-4:02 pm

Nonstop1h 14m

Ontario

Sun 12/7

12:55 pm-3:14 pm

Nonstop1h 19m

$166

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 12/13

6:25 am-11:30 am

1 stop6h 05m

Ontario

Sat 12/13

2:10 pm-7:25 pm

1 stop4h 15m

$171

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 12/13

3:48 pm-4:02 pm

Nonstop1h 14m

Ontario

Mon 12/15

4:47 pm-7:07 pm

Nonstop1h 20m

$177

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport to Ontario

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 Ontario?

In general, September is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $158. If you aren’t able to travel during the month of September, then book flights to Ontario from Phoenix Sky Harbor Intl Airport during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $175.

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

The cheapest day to depart on your flight to Ontario is on a Sunday when prices can be found for as low as $250. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix Sky Harbor Intl Airport to Ontario for around $282.

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

At noon is the cheapest time of day to fly from Phoenix Sky Harbor Intl Airport to Ontario when you can find flight prices for as low as $258. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $289 on average. Flights to Ontario from Phoenix Sky Harbor Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Phoenix Sky Harbor Intl to Ontario flight route?

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

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

You are more likely to see cheaper flights to Ontario from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $237 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Phoenix Sky Harbor Intl Airport for as low as $97 on momondo.

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

There are 3 cabin classes available to choose from on Phoenix Sky Harbor Intl to Ontario 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 Phoenix Sky Harbor Intl Airport to Ontario flights?

No. A direct flight is the cheapest option for a flight between Phoenix Sky Harbor Intl Airport to Ontario.

How have Phoenix Sky Harbor Intl Airport to Ontario flight prices changed over time?

As of October 2025, prices for Phoenix Sky Harbor Intl Airport to Ontario flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Phoenix Sky Harbor Intl Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Phoenix Sky Harbor Intl Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Phoenix Sky Harbor Intl Airport to Ontario (PHX to ONT) flight deals and tips

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

Best Price Found

$136

Fastest flight time

1h 10m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Phoenix Sky Harbor Intl Airport in the past 72 hours is $136. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to Ontario found on momondo in the last 72 hours is $295.
The fastest flight from Phoenix Sky Harbor Intl Airport to Ontario takes 1h 10m
Direct flights go from Phoenix Sky Harbor Intl Airport to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
Search flight deals

  • How far is Phoenix Sky Harbor Intl to Ontario by plane?

    Phoenix Sky Harbor Intl and Ontario are 327.4 mi apart from one another. Flights usually cover this in 1h 12m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Phoenix Sky Harbor Intl Airport to Ontario Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Phoenix Sky Harbor Intl Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Phoenix Sky Harbor Intl Airport to Ontario?

  • What is the most popular airline from Phoenix Sky Harbor Intl Airport to Ontario?

Best airlines flying from Phoenix Sky Harbor Intl Airport to Ontario

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $68Free CancellationRating
5.8
3,128 reviews
Search Frontier flights
American AirlinesPriceFrom $97Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights
SouthwestPriceFrom $98Free CancellationRating
8.0
4,237 reviews
Search Southwest flights

  • Southwest Flights From Phoenix Sky Harbor Intl Airport to Ontario

    Southwest flies from Phoenix Sky Harbor Intl Airport to Ontario around 22 times per week, with 4,237 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Phoenix Sky Harbor Intl Airport to Ontario in the last 72 hours was $98 (round-trip), much lower than the average airfare cost of $273 for Southwest flights on this route.

  • American Airlines Flights From Phoenix Sky Harbor Intl Airport to Ontario

    American Airlines (7.2/10 from 11,028 reviews) operates around 27 flights from Phoenix Sky Harbor Intl Airport to Ontario in any given week. The average American Airlines airfare for this route is around $276, with deals from around $97 rare but found on momondo. Referenced prices are for round-trip Phoenix Sky Harbor Intl Airport to Ontario flight searches in the last 72 hours.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Phoenix.

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

Yes. momondo enables you to select and highlight flights to Ontario from Phoenix with this policy.

How can momondo help me find flights from Phoenix to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Phoenix.

I’m not ready to book a flight from Phoenix to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from Phoenix are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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