PHX - ONT

$86 Find Cheap Flights from Phoenix to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Phoenix to Ontario departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Ontario, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Phoenix to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phoenix to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Phoenix to Ontario

KAYAK's recommended round-trip deals from the most popular airlines that fly from Phoenix to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
10:29 pm - 7:24 amPHX-ONT
8h 55m1 stop
Frontier Logo
12:59 am - 12:07 pmONT-PHX
11h 08m1 stop
$170Frontier
Find Deal
Thu, May 15 - Mon, May 19
Frontier Logo
1:17 pm - 11:08 pmPHX-ONT
9h 51m1 stop
Frontier Logo
5:15 pm - 9:14 pmONT-PHX
3h 59m1 stop
$171Frontier
Find Deal
Wed, May 21 - Sat, May 31
Frontier Logo
10:29 pm - 7:24 amPHX-ONT
8h 55m1 stop
Frontier Logo
1:08 pm - 4:49 pmONT-PHX
3h 41m1 stop
$177Frontier
Find Deal
Sun, May 18 - Wed, May 21
American Airlines Logo
7:41 am - 9:01 amPHX-ONT
1h 20mnonstop
American Airlines Logo
10:00 am - 11:22 amONT-PHX
1h 22mnonstop
$199American Airlines
Find Deal
Sat, May 24 - Wed, May 28
American Airlines Logo
5:10 pm - 6:23 pmPHX-ONT
1h 13mnonstop
American Airlines Logo
6:02 am - 7:24 amONT-PHX
1h 22mnonstop
$223American Airlines
Find Deal
Thu, May 22 - Sun, May 25
Southwest Logo
7:30 am - 12:30 pmPHX-ONT
5h 00m1 stop
Southwest Logo
4:10 pm - 9:50 pmONT-PHX
5h 40m2 stops
$224Southwest
Find Deal
Wed, May 28 - Wed, May 28
Southwest Logo
11:20 am - 12:35 pmPHX-ONT
1h 15mnonstop
Southwest Logo
5:25 am - 11:40 amONT-PHX
6h 15m1 stop
$225Southwest
Find Deal
Thu, May 29 - Sat, Jun 28
 Logo
7:00 am - 6:25 pmPHX-ONT
11h 25m2 stops
 Logo
12:59 am - 8:27 amONT-PHX
7h 28m1 stop
Thu, May 29 - Sun, Jun 1
Alaska Airlines Logo
7:00 am - 6:25 pmPHX-ONT
11h 25m2 stops
Alaska Airlines Logo
4:45 pm - 11:58 pmONT-PHX
7h 13m1 stop
$308Alaska Airlines
Find Deal
Wed, May 21 - Sat, May 31
Alaska Airlines Logo
2:05 pm - 10:46 pmPHX-ONT
8h 41m2 stops
Alaska Airlines Logo
7:30 am - 1:05 pmONT-PHX
5h 35m1 stop
$328Alaska Airlines
Find Deal
Tue, Jun 3 - Sat, Jun 7
Expert advice

Expert advice for your flight from Phoenix to Ontario

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Frontier

Opt for the Economy Bundle for a carry-on and seat selection at a budget-friendly price.


Pay for seat selection to avoid middle seats, especially with Basic Fare.

Read more about Frontierby Stefanie Waldek
American Airlines

Consider Main Cabin Extra for early boarding and complimentary drinks on short flights.


Download the American Airlines app for in-flight entertainment on your device.

Southwest

Enjoy two free checked bags up to 50 pounds each, ideal for family travel.


Set an alarm to check in 24 hours before for a better boarding position.

Read more about Southwestby Blane Bachelor
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Useful Info

KAYAK's insights & trends for Phoenix to Ontario flights

Get data-powered insights and trends into flights from Phoenix to Ontario to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Ontario
Find cheap flights to Ontario

Planning a trip from Phoenix to Ontario? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Phoenix to Ontario?

The average price of all round-trip flights from Phoenix Sky Harbor Intl Airport to Ontario clicked on KAYAK for each day over the last 12 months.

For Phoenix to Ontario, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Ontario back to Phoenix, the best deals are generally found on Friday, with Sunday being the most expensive.

What is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Phoenix Sky Harbor Intl Airport to Ontario is June, where tickets cost $93 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $284 and $259 respectively.

Can I save money by flying with a layover from Phoenix Sky Harbor Intl Airport to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $480, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Phoenix Sky Harbor Intl Airport to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Phoenix Sky Harbor Intl Airport to Ontario, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonFebruary
High seasonJune
Cheapest flight$86
Best time to beat the crowds but there is an average 32% increase in price.
Most popular time to fly and prices are also 53% lower on average.
Flight from Phoenix to Ontario

When to book flights from Phoenix to Ontario

Are your dates flexible? Find out the best times to travel from Phoenix to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Phoenix to Ontario flights

  • Which is the best way to get to downtown Ontario from Ontario International Airport (ONT)?

    The city center of Ontario lies about 2.4 miles from Ontario International Airport (ONT), and taxis provide the quickest means to get there in about 10 minUTES. Still, if you’re commuting on a tight budget, you can hop onto a Metro bus, which takes approximately 12 minutes to cover the distance between the two points.

  • Are there car rentals at Ontario International Airport (ONT)?

    Nothing beats the convenience of leaping into an adventure in a car, immediately you land in Ontario from Phoenix. Multiple car rental agencies, such as Avis and Hertz, run their desks at this facility. To locate the car rental garages, go past the baggage claim area, then downstairs to the street level, before exiting the terminal. A free airport shuttle will then drop you at the pickup garage.

  • Are there accessible services at Ontario International Airport (ONT)?

    ONT caters to the needs of disabled passengers and persons with limited mobility from PHX. ONT, in collaboration with the California Relay Service, renders essential services to travelers who are speech-disabled or deaf to navigate the airport. Also, standard amenities such as restrooms are wheelchair accessible.

  • Does ONT have nursing rooms?

    Mothers and their little ones arriving at ONT from PHX will find nursing and lactation suites at their disposal. The rooms feature benches and sinks and provide the needed privacy when pumping and breastfeeding. They’re located in Terminal 2, second floor, near women’s restrooms.

  • What is the cheapest flight from Phoenix Sky Harbor Intl Airport to Ontario?

    In the last 3 days, the lowest price for a flight from Phoenix Sky Harbor Intl Airport to Ontario was $86 for a one-way ticket and $170 for a round-trip.

  • Do I need a passport to fly between Phoenix and Ontario?

    A passport is not required to fly from Phoenix to Ontario.

  • Which airports will I be using when flying from Phoenix to Ontario?

    Phoenix airport is called Phoenix Sky Harbor Intl and the only airport in Ontario is Ontario.

  • Which airlines offer Wi-Fi service onboard planes from Phoenix to Ontario?

    American Airlines, Delta, and Alaska Airlines offer inflight Wi-Fi service on the Phoenix to Ontario flight route.

  • Which aircraft models fly most regularly from Phoenix to Ontario?

    The Boeing 737-700 Passenger/BBJ1 (winglets) is the aircraft model that flies most regularly on the Phoenix to Ontario flight route.

  • Which airline alliances offer flights from Phoenix to Ontario?

    oneworld is the only airline alliance operating flights between Phoenix and Ontario.

  • On which days can I fly direct from Phoenix to Ontario?

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

  • Which is the best airline for flights from Phoenix to Ontario, Southwest or American Airlines?

    The two airlines most popular with KAYAK users for flights from Phoenix to Ontario are Southwest and American Airlines. With an average price for the route of $257 and an overall rating of 8.0, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $281 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Phoenix to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phoenix to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phoenix to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Phoenix is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Phoenix to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Phoenix with another airline. Booking your flights between Phoenix and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phoenix to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Phoenix up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Phoenix Sky Harbor Intl Airport to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $149 or less one-way and $196 or less round-trip.
  • Those flying aboard American Airlines from Phoenix to Ontario should remember that the carrier runs its hub at Phoenix Sky Harbor International Airport (PHX). You’ll depart through Terminal 4, on Concourses A and B of this facility. Still, you can access the Admirals Club on Concourse B between Gates A19 and A21. Members will enjoy priority clearance under the fast lane program.
  • Several licensed car and shuttle companies run their services from Phoenix Sky Harbor International Airport (PHX) to other destinations within and beyond this property. Most of their counters are at the passenger terminals, parking lots, and consolidated car rental centers. You can thus contact your preferred provider to pick up and drop you at the airport.
  • If you’re leaving Phoenix for Ontario via Phoenix Sky Harbor International Airport, remember that the establishment has two Terminals; 3 and 4. Terminal 3 serves those flying aboard Delta or JetBlue airlines, while Terminal 4 is dedicated to all international departures and arrivals. A free PHX Sky Train facilitates movement from one terminal to another, extending to the East Economy Parking and Valley Metro Rail.
  • If you wish to drop off your car before flying from Phoenix to Ontario, you’ll have several parking options, including on-site parking which is easy and convenient. By scanning the QR code from your mobile, you’ll enjoy the touchless entry/exit option, which makes your work easier. Also, the Terminal Garages are a few steps from your gate.
  • Travelers planning to depart to Ontario from Phoenix might find it helpful to sleep in hotels adjacent to Phoenix Sky Harbor Airport (PHX). Hilton Phoenix Airport and Hilton Garden Inn Phoenix Airport North are two such hotels offering courtesy shuttles to and from the airport. You’ll thus be able to reach the terminal in time for your departure.

Prefer to fly direct from Phoenix to Ontario?

Find which airlines fly direct from Phoenix Sky Harbor Intl Airport to Ontario Airport, which days they fly and book direct flights.

Direct departures

Phoenix Sky Harbor Intl to Ontario

Monday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Tuesday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Wednesday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Thursday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Friday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Saturday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Sunday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

See more direct flights

Direct returns

Ontario to Phoenix Sky Harbor Intl

Monday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Tuesday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Wednesday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Thursday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Friday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Saturday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

Sunday

American Airlines, British Airways, Southwest

American Airlines, British Airways, +1 more

See more direct flights
See more direct flights

Top 3 airlines serving from Phoenix to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Phoenix to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Phoenix to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4293 reviews
7.1Food
7.6Entertainment
8.2Boarding
8.6Crew
8.0Comfort
Airline reviews

It was a perfect flight in all aspects! Both legs!

10.0 ExcellentAnonymous, Apr 2025LGB - SMF
Read more Southwest reviews

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

Delayed 4 hours due to mechanical issues. No mention of compensation for being over 3 hours late

I will be flying again Southwest Airlines. Friendly crew, comfortable and affordable.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Wonderful crew and early arrival to our destination. It was so nice to have free wifi access and movies too. Thank you!

Bigger seats. Board back to front! Disembark front to back!

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

Service in first class no longer exists on American Airlines .

My seat was very worn. Otherwise I had an excellent flight

Boarding can be more efficiently done by having the back row passengers board first. This way, the other people do the have to wait for front row passengers to load their luggage in the overhead cabins. Food is simply pathetic for the price I paid. Cleanliness is simply poor; my seat was full of crumps.

Always a great flight on AA. PHX to DFW and vise versa is always going to be a pretty full flight but the crew handles it phenomenally.

also wi-fi never worked attendant said satellite coverage is spotty over water ..... but we were over land!

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

Everything went as planned. Crew was great. Seats were still not that comfortable.

Early arrival. Great landing. Pilot updates. Too cold in plane.

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

My experience with the phoenix airport was terrible, the personnel lay the ticket counter charged me for a carry on that fit in the carry on size box, and the two women I spoke with were terribly rude and not willing to help.,,, there was one lady “candy” on the flight crew that was amazing and is the only reason I stayed on the flight at all, because the other stewards helping people to get seated on the plane were terrible

The plane was clean, the crew was friendly and helpful. It’s a low cost airline so there was no food, drinks or in flight entertainment but we didn’t expect any of these things. In the room for improvement department, they should install USB ports in seats to charge mobile devices.

I was surprised that all baggage, including carry on, were charged. Each additional bag went up in cost. Really disappointed in the additional costs.

I ended up paying $70+ dollars to for a carryon because the website is confusing and misleading. I now realize I did not need to pay that. I request a refund. I will pay extra to other airlines and not fly Frontier again.

Charges unexpected. For seat that didnt recline. Please reverse extra seat and carryon charge. Bad business that is a bait and switch.

I couldn’t check in because the app didn’t work. It took 3 Frontier employees at the counter to get me checked in. Flight left 3 hours after departure time

Everything you need to know for your flight from Phoenix to Ontario

Information on your arrival and departure airports

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