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Cheap Flights from Ontario (ONT) to Phoenix (PHXA)

Compare Ontario International to Phoenix flight deals

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Flight deals from Ontario International to Phoenix

Looking for a cheap last-minute deal or the best return flight from Ontario International to Phoenix? Find the lowest prices on one-way and return tickets right here.
Phoenix.$179 per passenger.Departing Wed, 8 Oct, returning Wed, 8 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Wed, 8 Oct, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Wed, 8 Oct, arriving in Ontario International.Price includes taxes and charges.From $179, select.
Phoenix.$179 per passenger.Departing Sat, 10 Jan, returning Sat, 17 Jan.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Sat, 10 Jan, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Sat, 17 Jan, arriving in Ontario International.Price includes taxes and charges.From $179, select.
Phoenix.$179 per passenger.Departing Tue, 28 Oct, returning Tue, 4 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Tue, 28 Oct, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Tue, 4 Nov, arriving in Ontario International.Price includes taxes and charges.From $179, select.
Phoenix.$179 per passenger.Departing Mon, 3 Nov, returning Mon, 3 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Mon, 3 Nov, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Mon, 3 Nov, arriving in Ontario International.Price includes taxes and charges.From $179, select.
Phoenix.$179 per passenger.Departing Sat, 6 Sep, returning Mon, 8 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Sat, 6 Sep, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Mon, 8 Sep, arriving in Ontario International.Price includes taxes and charges.From $179, select.
Phoenix.$217 per passenger.Departing Sat, 30 Aug, returning Tue, 2 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Sat, 30 Aug, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Tue, 2 Sep, arriving in Ontario International.Price includes taxes and charges.From $217, select.
Phoenix.$229 per passenger.Departing Mon, 25 Aug, returning Sat, 30 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Mon, 25 Aug, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Sat, 30 Aug, arriving in Ontario International.Price includes taxes and charges.From $229, select.
Phoenix.$233 per passenger.Departing Sat, 27 Sep, returning Wed, 8 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Sat, 27 Sep, arriving in Phoenix Sky Harbor.Inbound direct flight with Southwest Airlines departs from Phoenix Sky Harbor on Wed, 8 Oct, arriving in Ontario International.Price includes taxes and charges.From $233, select.

Find the cheapest month to fly from Ontario International to Phoenix

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Phoenix flights are currently cheapest in September.
Aug
from $229
Sep
from $179
Oct
from $179
Nov
from $179
Dec
from $280
Jan
from $179
Feb
from $407
Mar
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Apr
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May
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Jun
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Jul
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Direct flights from Ontario International to Phoenix

Alternative Ontario International to Phoenix routes

Looking for the cheapest, fastest or easiest route from Ontario International to Phoenix? You could fly into the following airports instead.

Ontario to Phoenix: Flight information

The things to know before you go.
Cheapest flight found$179
Cheapest month to flySeptember
Average flight time1 hr, 19 mins
Most popular airlineAmerican Airlines
Average flights per week300

Finding cheap flights from Ontario International to Phoenix: Frequently asked questions

There are 4 airports in Phoenix: Phoenix Sky Harbor, Phoenix Scottsdale Municipal, Phoenix-Deer Valley, and Phoenix-Mesa Gateway.
The best price we found for a return flight from Ontario International to Phoenix is $179. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 19 minutes is the average flight time from Ontario International to Phoenix.
American Airlines, Southwest Airlines and SkyWest Airlines fly direct from Ontario International to Phoenix.
As of August 2025, there are 150 flights per week flying from Ontario International to Phoenix.
The cheapest month to fly from Ontario International to Phoenix is usually September.
If you're flying from Ontario International Airport, the cheapest airport near Phoenix is Phoenix Sky Harbor – which is 6.0 km away from the centre of Phoenix. We've found flights into this airport from $179.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Phoenix on Saturday, 6 September 2025.
Yes – the average flight time is 1 hour and 19 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phoenix but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Phoenix is around 40 days in advance, so don’t leave your flight to the last minute.
In August, the average temperature is usually around 32°C. July is typically the warmest month in Phoenix, when it usually averages around 40°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 4°C. The rainiest month is August.
Currently, Southwest Airlines offers the cheapest flight tickets to Phoenix.

Travelling from Ontario International Airport (ONT) to Phoenix: what you need to know

  • Approximately 1 hour 15 minutes is how long you can expect to be in the air on a direct flight from Ontario International Airport to Phoenix.

  • Phoenix's timezone is UTC-7, which is the same as Ontario (the location of Ontario International Airport).

  • Ontario International Airport (ONT) to Phoenix Sky Harbour International Airport (PHX) is the most traveled route, with 51 flights a week to pick from. If you prefer starting your day later, the last flight from ONT to PHX is with Southwest Airlines at 20:50. Opt for the first departure operated by Southwest Airlines at 05:15 if you want to fly out earlier.

  • Leave enough time to make your ONT to Phoenix flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • Planning to travel during a peak period like public or school holidays? Expect longer lines at security and check-in. For peace of mind, arrive up to four hours before international flights and two hours before domestic departures.

  • Direct Ontario International Airport to Phoenix tickets are available for booking. Phoenix Sky Harbour International Airport (PHX) is where you'll be touching down.

  • Look out for offers from American Airlines. This carrier operates direct flights from Ontario International Airport to Phoenix.

  • ONT is about 5 kilometres from central Ontario. If you're catching a cab, driving or ride-sharing from the centre, it'll take you 10 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the journey time to be around 1 hour 30 minutes.

  • Searching for a hotel close to ONT? If you've booked an early flight from Ontario International Airport to Phoenix, these stays set you up for a seamless send-off:

  • 83.6% of flights leaving Ontario International Airport land at their destination as planned. Given its strong on-time performance, disruptions are unlikely when jetting out of ONT.

  • ONT is located at 2900 E. Airport Drive.

How to find the cheapest flights from Ontario International Airport (ONT) to Phoenix

  • The lowest price we've seen for a one-way Ontario International Airport to Phoenix flight is $89. The cheapest price for a return flight is $179. Keep in mind fares can change due to availability at the time of booking.

  • Book one month before you want to travel. Pricing trends suggest that this is the ideal window for finding cheap flights from ONT to Phoenix.

  • Organise your trip for May. That's the best month for scoring an epic deal on Ontario International Airport to Phoenix tickets. If you're flexible with your dates, use the 'Whole month' tool to access the lowest price across every month.

  • Locking in a cheap flight from ONT to Phoenix is easy with Price Alerts. Simply create one of these automatic notifications and we'll notify you when a new discount appears.

  • Tailor your trip with filters. Pick your arrival and departure times, airlines and total journey duration. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from Ontario International Airport to Phoenix.

Airports in Phoenix

Phoenix Scottsdale Municipal Airport (SCF)

  • Phoenix Scottsdale Municipal Airport (SCF) to central Phoenix takes around 35 minutes by car. The centre is roughly 32 kilometres away.

  • If you're using public transport, expect a journey time of about 1 hour 55 minutes.

  • If you have a late flight from Ontario International Airport to Phoenix, few things beat the convenience of staying near the terminal. Grab your suitcases from the carousel and then be showered and sleeping not long after at one of these accommodation options near SCF:

Phoenix Sky Harbour International Airport (PHX)

  • Phoenix Sky Harbour International Airport (PHX) is roughly 8 kilometres from central Phoenix. Following your flight from Ontario International Airport to Phoenix, it'll take you around 10 minutes to get to the heart of the city in a cab or ride-share.

  • You can expect the trip to take roughly 35 minutes on public transport.

  • After stepping off your ONT to Phoenix flight, settle in at a hotel near PHX. These are some comfortable options that'll help you get into relaxation mode:

  • Europcar, Dollar and Thrifty make picking up a Phoenix Sky Harbour International Airport rental car easy and quick. These companies are located in or around the terminal and will have you on the road before long.

  • Get first dibs on the best options. Booking your ride from PHX one week ahead of time often means more savings and a bigger choice of vehicles.

  • Phoenix Sky Harbour International Airport is located at 3400 Sky Harbour Boulevard.

Phoenix-Mesa Gateway Airport (AZA)

  • Step off your flight from Ontario International Airport to Phoenix and make your way to your hotel or jump right into exploring. The centre of Phoenix is around 56 kilometres from Phoenix-Mesa Gateway Airport (AZA) and usually takes 40 minutes to reach by car.

  • Check in to a hotel near AZA and get from baggage claim to your bed in a snap. Whether you have a late ONT to Phoenix flight or just want a stress-free arrival, these accommodation options will have you settling in quickly:

  • Be in the driver's seat of the next leg of your trip by picking up a Phoenix-Mesa Gateway Airport rental car. Dollar, Alamo and Budget make getting on the road smooth sailing.

  • Around two weeks before your flight from Ontario International Airport to Phoenix is the ideal time to secure your vehicle from AZA. You're likely to find a better rate or pick up some early bird promotions.

  • The address for Phoenix-Mesa Gateway Airport is 6033 S. Sossaman Rd..

Best time to go to Phoenix

  • Visit Phoenix during the high season if you prefer a bustling atmosphere, but remember that hotel prices tend to be higher. Alternatively, book your flights from Ontario International Airport to Phoenix during low season when prices are cheaper and crowds are smaller.

  • The warmest month in Phoenix is July, with temperatures ranging between 26ºC (79ºF) and 44ºC (111ºF). Lock in your Ontario International Airport to Phoenix flight ticket then if that's your ideal forecast.

  • If you like cooler conditions, look for a cheap ticket from ONT to Phoenix in January when temperatures average between 4ºC (39ºF) and 20ºC (68ºF).

More about Phoenix

  • After booking your flight from Ontario International Airport to Phoenix, choose a hotel that puts you right where the action is. Make one of these options your base for exploring Phoenix:

  • There are so many things to explore in this city it can be tricky to know where to start. Heard Museum, Desert Botanical Garden and Papago Park are leading attractions which should feature on any well-planned Phoenix itinerary.

Explore more of United States

  • San Diego is just one of the many cities in United States waiting to be explored once you've seen Phoenix. Around 483 kilometres away to the west, its top attractions include San Diego Zoo, USS Midway Museum and SeaWorld San Diego.

  • If you're ready to explore another major stop in United States, head for Las Vegas, about 418 kilometres north-west of Phoenix. Las Vegas Strip, Fountains of Bellagio and Fremont Street Experience are key highlights.

Plan the rest of your trip from Ontario to Phoenix

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.