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Cheap flights from Phoenix to Los Angeles from $55

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 11/17. 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
9:16 am - 2:25 pmPHX-ONT
6h 09m1 stop
Frontier Logo
2:59 pm - 12:42 amONT-PHX
8h 43m1 stop
$110Frontier
Find Deal
Sat, Dec 6 - Mon, Dec 8
Frontier Logo
9:17 am - 12:51 pmPHX-ONT
4h 34m1 stop
Frontier Logo
12:58 am - 8:55 amONT-PHX
6h 57m1 stop
$111Frontier
Find Deal
Mon, Nov 17 - Wed, Nov 19
Frontier Logo
9:16 am - 2:25 pmPHX-ONT
6h 09m1 stop
Frontier Logo
6:15 am - 6:31 pmONT-PHX
11h 16m1 stop
$116Frontier
Find Deal
Sat, Dec 6 - Wed, Dec 10
Frontier Logo
9:58 am - 2:04 pmPHX-ONT
5h 06m1 stop
Frontier Logo
6:15 am - 6:31 pmONT-PHX
11h 16m1 stop
$117Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Frontier Logo
6:15 am - 6:35 pmPHX-ONT
13h 20m1 stop
Frontier Logo
6:15 am - 6:31 pmONT-PHX
11h 16m1 stop
$119Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Frontier Logo
6:15 am - 6:35 pmPHX-ONT
13h 20m1 stop
Frontier Logo
2:59 pm - 12:42 amONT-PHX
8h 43m1 stop
$120Frontier
Find Deal
Thu, Dec 4 - Mon, Dec 8
Frontier Logo
7:43 pm - 2:04 pmPHX-ONT
19h 21m1 stop
Frontier Logo
6:15 am - 6:31 pmONT-PHX
11h 16m1 stop
$121Frontier
Find Deal
Wed, Dec 3 - Sat, Dec 6
Frontier Logo
6:15 am - 6:35 pmPHX-ONT
13h 20m1 stop
Frontier Logo
5:18 pm - 6:31 pmONT-PHX
24h 13m1 stop
$122Frontier
Find Deal
Thu, Dec 4 - Mon, Dec 8
Frontier Logo
9:16 am - 2:25 pmPHX-ONT
6h 09m1 stop
Frontier Logo
2:59 pm - 12:31 amONT-PHX
8h 32m1 stop
$124Frontier
Find Deal
Sat, Dec 6 - Sun, Dec 7
Frontier Logo
6:15 am - 6:35 pmPHX-ONT
13h 20m1 stop
Frontier Logo
2:59 pm - 12:31 amONT-PHX
8h 32m1 stop
$125Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7

Frontier flights from Phoenix to Ontario

Our best Frontier deals on Phoenix to Ontario flight tickets
Frontier
Dec 6
PHX9:16 amPhoenix Sky Harbor Intl
6h 09m
1 stop
ONT2:25 pmOntario
Dec 8
ONT2:59 pmOntario
8h 43m
1 stop
PHX12:42 amPhoenix Sky Harbor Intl
$110
Find similar
Frontier
Nov 17
PHX9:17 amPhoenix Sky Harbor Intl
4h 34m
1 stop
ONT12:51 pmOntario
Nov 19
ONT12:58 amOntario
6h 57m
1 stop
PHX8:55 amPhoenix Sky Harbor Intl
$111
Find similar
Frontier
Dec 6
PHX9:16 amPhoenix Sky Harbor Intl
6h 09m
1 stop
ONT2:25 pmOntario
Dec 10
ONT6:15 amOntario
11h 16m
1 stop
PHX6:31 pmPhoenix Sky Harbor Intl
$116
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 November 4, 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

Sat 12/6

9:16 am-2:25 pm

1 stop6h 09m

Ontario

Mon 12/8

2:59 pm-12:42 am

1 stop8h 43m

$110

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Mon 11/17

9:17 am-12:51 pm

1 stop4h 34m

Ontario

Wed 11/19

12:58 am-8:55 am

1 stop6h 57m

$111

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 12/6

9:16 am-2:25 pm

1 stop6h 09m

Ontario

Wed 12/10

6:15 am-6:31 pm

1 stop11h 16m

$116

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 12/4

9:58 am-2:04 pm

1 stop5h 06m

Ontario

Thu 12/11

6:15 am-6:31 pm

1 stop11h 16m

$117

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 12/4

6:15 am-6:35 pm

1 stop13h 20m

Ontario

Thu 12/11

6:15 am-6:31 pm

1 stop11h 16m

$119

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 12/4

6:15 am-6:35 pm

1 stop13h 20m

Ontario

Mon 12/8

2:59 pm-12:42 am

1 stop8h 43m

$120

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Wed 12/3

7:43 pm-2:04 pm

1 stop19h 21m

Ontario

Sat 12/6

6:15 am-6:31 pm

1 stop11h 16m

$121

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 12/4

6:15 am-6:35 pm

1 stop13h 20m

Ontario

Mon 12/8

5:18 pm-6:31 pm

1 stop24h 13m

$122

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 12/6

9:16 am-2:25 pm

1 stop6h 09m

Ontario

Sun 12/7

2:59 pm-12:31 am

1 stop8h 32m

$124

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 12/4

6:15 am-6:35 pm

1 stop13h 20m

Ontario

Sun 12/7

2:59 pm-12:31 am

1 stop8h 32m

$125

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 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 to Ontario for around $284.

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 to Ontario when you can find flight prices for as low as $261. 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 $288 on average. Flights to Ontario from Phoenix in the afternoon 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 $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 for as low as $97 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 11m

Direct flights

Every day

Airports in Ontario

1 airport
The fastest flight from Phoenix to Ontario takes 1h 11m
Direct flights go from Phoenix to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
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  • How far is Phoenix to Ontario by plane?

    The distance between Phoenix and Ontario is about 322.9 mi. 3h 34m 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
3,116 reviews
Search Frontier flights
American AirlinesPriceFrom $97Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,237 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

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