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Cheap flights from Phoenix to Los Angeles 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 Phoenix to Los Angeles departing on 1/6. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:42 pm - 2:12 pm
PHX
-
ONT
20h 30m1 stop
Frontier Logo
8:05 pm - 10:22 am
ONT
-
PHX
13h 17m1 stop
$110Frontier
Tue, Jan 20 - Mon, Jan 26
American Airlines Logo
11:42 am - 12:03 pm
PHX
-
ONT
1h 21mnonstop
American Airlines Logo
9:59 am - 12:17 pm
ONT
-
PHX
1h 18mnonstop
$117American Airlines
Tue, Jan 13 - Wed, Jan 14
Frontier Logo
2:34 pm - 5:54 pm
PHX
-
ONT
4h 20m1 stop
Frontier Logo
7:15 am - 3:15 pm
ONT
-
PHX
7h 00m1 stop
$120Frontier
Tue, Jan 13 - Wed, Jan 14
Frontier Logo
6:42 pm - 2:12 pm
PHX
-
ONT
20h 30m1 stop
Frontier Logo
7:15 am - 7:19 pm
ONT
-
PHX
11h 04m1 stop
$121Frontier
Tue, Jan 20 - Wed, Jan 28
Frontier Logo
10:16 pm - 1:37 pm
PHX
-
ONT
16h 21m1 stop
Frontier Logo
3:07 pm - 10:22 am
ONT
-
PHX
18h 15m1 stop
$122Frontier
Mon, Jan 19 - Tue, Jan 27
Frontier Logo
9:59 pm - 1:34 pm
PHX
-
ONT
16h 35m1 stop
Frontier Logo
8:05 pm - 10:22 am
ONT
-
PHX
13h 17m1 stop
$124Frontier
Fri, Jan 23 - Mon, Jan 26
Southwest Logo
4:40 pm - 4:55 pm
PHX
-
ONT
1h 15mnonstop
Southwest Logo
3:20 pm - 11:15 pm
ONT
-
PHX
6h 55m1 stop
$127Southwest
Tue, Jan 20 - Wed, Jan 21
Frontier Logo
2:06 pm - 6:40 pm
PHX
-
ONT
5h 34m1 stop
Frontier Logo
1:05 pm - 8:07 pm
ONT
-
PHX
6h 02m1 stop
$128Frontier
Sat, Jan 24 - Mon, Jan 26
Frontier Logo
9:45 am - 4:41 pm
PHX
-
ONT
7h 56m1 stop
Frontier Logo
10:13 am - 12:57 am
ONT
-
PHX
13h 44m1 stop
$129Frontier
Sun, Jan 25 - Sun, Feb 1
Frontier Logo
8:36 pm - 9:23 am
PHX
-
ONT
13h 47m1 stop
Frontier Logo
8:48 pm - 8:20 am
ONT
-
PHX
10h 32m1 stop
$132Frontier
Thu, Jan 22 - Thu, Jan 29

Frontier flights from Phoenix to Ontario

Our best Frontier deals on Phoenix to Ontario flight tickets
Frontier
Jan 20
PHX6:42 pmPhoenix Sky Harbor Intl
20h 30m
1 stop
ONT2:12 pmOntario
Jan 26
ONT8:05 pmOntario
13h 17m
1 stop
PHX10:22 amPhoenix Sky Harbor Intl
$110
Find similar
Frontier
Jan 13
PHX2:34 pmPhoenix Sky Harbor Intl
4h 20m
1 stop
ONT5:54 pmOntario
Jan 14
ONT7:15 amOntario
7h 00m
1 stop
PHX3:15 pmPhoenix Sky Harbor Intl
$120
Find similar
Frontier
Jan 20
PHX6:42 pmPhoenix Sky Harbor Intl
20h 30m
1 stop
ONT2:12 pmOntario
Jan 28
ONT7:15 amOntario
11h 04m
1 stop
PHX7:19 pmPhoenix Sky Harbor Intl
$121
Find similar

Southwest flights from Phoenix to Ontario

Our best Southwest deals on Phoenix to Ontario flight tickets
Southwest
Jan 20
PHX4:40 pmPhoenix Sky Harbor Intl
1h 15m
ONT4:55 pmOntario
Jan 21
ONT3:20 pmOntario
6h 55m
1 stop
PHX11:15 pmPhoenix Sky Harbor Intl
$127
Find similar
Southwest
Jan 20
PHX3:50 pmPhoenix Sky Harbor Intl
4h 45m
1 stop
ONT7:35 pmOntario
Jan 21
ONT10:40 amOntario
6h 00m
2 stops
PHX5:40 pmPhoenix Sky Harbor Intl
$142
Find similar
Southwest
Jan 20
PHX4:15 pmPhoenix Sky Harbor Intl
5h 05m
2 stops
ONT8:20 pmOntario
Jan 21
ONT10:40 amOntario
6h 00m
2 stops
PHX5:40 pmPhoenix Sky Harbor Intl
$147
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Phoenix 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 December 11, 2025.
Use the filters below to find and compare flights from Phoenix to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 1/20

6:42 pm-2:12 pm

1 stop20h 30m

Ontario

Mon 1/26

8:05 pm-10:22 am

1 stop13h 17m

$110

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 1/13

11:42 am-12:03 pm

Nonstop1h 21m

Ontario

Wed 1/14

9:59 am-12:17 pm

Nonstop1h 18m

$117

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 1/13

2:34 pm-5:54 pm

1 stop4h 20m

Ontario

Wed 1/14

7:15 am-3:15 pm

1 stop7h 00m

$120

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 1/20

6:42 pm-2:12 pm

1 stop20h 30m

Ontario

Wed 1/28

7:15 am-7:19 pm

1 stop11h 04m

$121

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Mon 1/19

10:16 pm-1:37 pm

1 stop16h 21m

Ontario

Tue 1/27

3:07 pm-10:22 am

1 stop18h 15m

$122

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Fri 1/23

9:59 pm-1:34 pm

1 stop16h 35m

Ontario

Mon 1/26

8:05 pm-10:22 am

1 stop13h 17m

$124

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 1/20

4:40 pm-4:55 pm

Nonstop1h 15m

Ontario

Wed 1/21

3:20 pm-11:15 pm

1 stop6h 55m

$127

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 1/24

2:06 pm-6:40 pm

1 stop5h 34m

Ontario

Mon 1/26

1:05 pm-8:07 pm

1 stop6h 02m

$128

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sun 1/25

9:45 am-4:41 pm

1 stop7h 56m

Ontario

Sun 2/1

10:13 am-12:57 am

1 stop13h 44m

$129

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 1/22

8:36 pm-9:23 am

1 stop13h 47m

Ontario

Thu 1/29

8:48 pm-8:20 am

1 stop10h 32m

$132

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 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 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 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 Wednesday when prices can be found for as low as $229. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix to Ontario for around $320.

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

In the morning is the cheapest time of day to fly from Phoenix to Ontario when you can find flight prices for as low as $262. Flying to Ontario in the morning 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 evening when prices are $295 on average. Flights to Ontario from Phoenix in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Phoenix to Ontario flight route?

Fly from Phoenix Sky Harbor Intl to Ontario for the best Phoenix - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $238 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Phoenix for as low as $120 on momondo.

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

There are 3 cabin classes available to choose from on Phoenix to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Phoenix to Ontario flight deals and tips

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

Fastest flight time

1h 15m

Direct flights

Every day

Airports in Ontario

1 airport
The fastest flight from Phoenix to Ontario takes 1h 15m
Direct flights go from Phoenix to Ontario every day.
There is 1 airport in Ontario. From Phoenix there are direct flights to Ontario (ONT).
Search flight deals

  • How far is Phoenix to Ontario by plane?

    The distance between Phoenix and Ontario is about 322.9 mi. 1h 15m is a normal flight duration for this route.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Phoenix 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.

Best airlines flying from Phoenix to Ontario

Compare and see reviews for airlines that fly from Phoenix to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $68Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
American AirlinesPriceFrom $97Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
SouthwestPriceFrom $97Free CancellationRating
7.9
4,252 reviews
Search Southwest flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Phoenix to Ontario. momondo saves you time and could save you money on your trip.

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?

momondo provides multiple filters to help you find the best flight to Ontario from Phoenix. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Phoenix and alert you when they change.

An easier way to manage your Ontario 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.
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