Find Cheap Flights from Ontario to Phoenix (LAX - PHX)

Flights overview

Useful information for finding cheap flights from Ontario to Phoenix and booking your next trip

Cheapest round-trip flights	$144	Frontier 1 stop 4 hr Sat, Feb 21 — Mon, Feb 23	The cheapest round-trip flight from Ontario to Phoenix is currently $144
Cheapest one-way flight	$59	Southwest Nonstop 2 hr Wed, Feb 18	The cheapest one-way flight from Ontario to Phoenix is currently $59
Cheapest nonstop flights	$171	Southwest Nonstop 2 hr Thu, Feb 19 — Mon, Feb 23	The cheapest nonstop round-trip flight from Ontario to Phoenix is currently $171
Last-minute weekend getaway	$282	Frontier 1 stop 7 hr Sat, Jan 24 — Mon, Jan 26	The cheapest last-minute weekend getaway from Ontario to Phoenix is currently $282
Cheapest business class flights	$355	American Nonstop 2 hr Sat, Apr 18 — Mon, Apr 20	The cheapest business class round-trip flight from Ontario to Phoenix is currently $355

Fastest flight	1 hr 15 min	The fastest nonstop flight from Ontario to Phoenix takes 1 hr 15 min
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Ontario to Phoenix is typically August. The most expensive month to fly is typically July.

August Cheapest	Typical prices: $110–250
July Most expensive	Typical prices: $170–275

Popular airlines from Ontario to Phoenix

Southwest

Nonstop

from $171

Typical price: $165–405

27 weekly nonstop flights

ONT - PHX Every day

1510 weekly connecting flights

ONT - PHX Every day
American

Nonstop

from $171

Typical price: $170–435

31 weekly nonstop flights

ONT - PHX Every day

148 weekly connecting flights

ONT - PHX Every day
United

from $235

Typical price: $285–520

140 weekly connecting flights

ONT - PHX Every day
Alaska

from $428

Typical price: $380–730

76 weekly connecting flights

ONT - PHX Every day
Frontier

from $144

Typical price: $140–275

70 weekly connecting flights

ONT - PHX Every day
Delta

from $1,401

Typical price: $1,350–1,500

60 weekly connecting flights

ONT - PHX Every day

Popular airports near Ontario

Ontario International Airport (ONT)

Ontario United States 11 min 2 mi
Los Angeles International Airport (LAX)

Los Angeles United States 1 hr 7 min 44 mi
Tijuana International Airport (TIJ)

Tijuana Mexico 2 hr 17 min 112 mi
San Diego International Airport (SAN)

San Diego United States 1 hr 51 min 95 mi

Popular airports near Phoenix

Phoenix Sky Harbor International Airport (PHX)

Phoenix United States 12 min 3 mi
Mesa Gateway Airport (AZA)

Phoenix United States 41 min 25 mi
Tucson International Airport (TUS)

Tucson United States 1 hr 53 min 112 mi
Scottsdale Airport (SCF)

Phoenix United States 31 min 15 mi

Frequently asked questions about flying from Ontario to Phoenix

The cheapest flights from Ontario to Phoenix are usually in August. Typical ticket prices in August range from $110 to $250.

The cheapest round-trip flight from Ontario to Phoenix recently found on Google Flights was with Frontier from $144. The cheapest one-way flight was with Southwest from $59.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Ontario to Phoenix is $171, flying from Feb 19 to Feb 23.
The cheapest American flight from Ontario to Phoenix is $171, flying from Feb 19 to Feb 23.
The cheapest United flight from Ontario to Phoenix is $235, flying from Apr 16 to Apr 20.
The cheapest Alaska flight from Ontario to Phoenix is $428, flying from Feb 28 to Mar 1.
The cheapest Frontier flight from Ontario to Phoenix is $144, flying from Feb 21 to Feb 23.
The cheapest Delta flight from Ontario to Phoenix is $1,401, flying from Jan 22 to Jan 25.

The cheapest round-trip flight from Ontario to Phoenix starts at $144 from Sat, Feb 21 to Mon, Feb 23. The cheapest one-way flight starts at $59 and departs on Wed, Feb 18.

1 hr 15 min is the shortest flight time from Ontario to Phoenix.

Most visitors arrive Dec–May, when the weather is warm and dry. Summers (May–Sep) are very hot. Local events include the Phoenix Open professional golf tournament (late Jan–early Feb), the Arizona State Fair (Oct) and the Arizona National Livestock Show (Dec).

It's easy to use Google Flights to find the cheapest days to fly from Ontario to Phoenix.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What counts as the best airline for your flights from Ontario to Phoenix really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Ontario to Phoenix.

In terms of nonstop flights, American is the most popular. American offers 31 nonstop flights and 148 connecting flights per week. American flies from Ontario International Airport (ONT) to Phoenix Sky Harbor International Airport (PHX) .

In terms of flights, Southwest is the most popular. Southwest offers 27 nonstop flights and 1,510 connecting flights per week. Southwest flies from Ontario International Airport (ONT) to Phoenix Sky Harbor International Airport (PHX) .

Other popular airlines flying from Ontario to Phoenix are:

United offers 140 connecting flights per week. United flies from Ontario International Airport (ONT) to Phoenix Sky Harbor International Airport (PHX) .
Alaska offers 76 connecting flights per week. Alaska flies from Ontario International Airport (ONT) to Phoenix Sky Harbor International Airport (PHX) .
Frontier offers 70 connecting flights per week. Frontier flies from Ontario International Airport (ONT) to Phoenix Sky Harbor International Airport (PHX) .
Delta offers 60 connecting flights per week. Delta flies from Ontario International Airport (ONT) to Phoenix Sky Harbor International Airport (PHX) .

The number of connecting flights refers to distinct flights with at least one stop between Ontario and Phoenix.

The cheapest round-trip flight from Ontario to Phoenix recently found on Google Flights was with Frontier from $144. The cheapest one-way flight was with Southwest from $59.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Ontario to Phoenix is $171, flying from Feb 19 to Feb 23.
The cheapest American flight from Ontario to Phoenix is $171, flying from Feb 19 to Feb 23.
The cheapest United flight from Ontario to Phoenix is $235, flying from Apr 16 to Apr 20.
The cheapest Alaska flight from Ontario to Phoenix is $428, flying from Feb 28 to Mar 1.
The cheapest Frontier flight from Ontario to Phoenix is $144, flying from Feb 21 to Feb 23.
The cheapest Delta flight from Ontario to Phoenix is $1,401, flying from Jan 22 to Jan 25.

American and Southwest fly direct from Ontario to Phoenix.

There are 27 Southwest direct flights from Ontario to Phoenix per week. Flights are available every day.
There are 31 American direct flights from Ontario to Phoenix per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

The cheapest last-minute deal between Ontario and Phoenix at price $282 is offered by Frontier from Sat, Jan 24 to Mon, Jan 26.

American and Southwest fly direct from Ontario to Phoenix.

There are 27 Southwest direct flights from Ontario to Phoenix per week. Flights are available every day.
There are 31 American direct flights from Ontario to Phoenix per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

There are direct flights from Ontario to Phoenix on a daily basis.

The cheapest direct (nonstop) round-trip flights between Ontario and Phoenix start at $171 from Thu, Feb 19 to Mon, Feb 23 with Southwest.

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Ontario to Phoenix, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

The cheapest business class round-trip flights between Ontario and Phoenix start at $355 from Sat, Apr 18 to Mon, Apr 20 with American.

The cheapest economy class round-trip flights between Ontario and Phoenix start at $144 from Sat, Feb 21 to Mon, Feb 23.

To book business class trips from Ontario to Phoenix, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

The best last-minute getaway deal for the next weekend between Ontario and Phoenix starts at $282 from Sat, Jan 24 to Mon, Jan 26 with Frontier.

The cheapest last-minute deal between Ontario and Phoenix at price $282 is offered by Frontier from Sat, Jan 24 to Mon, Jan 26.

To find last-minute flight deals from Ontario to Phoenix, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.