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

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Phoenix Deer Valley Airport (DVT)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Alternative airports near Phoenix

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sky Harbor Intl. PHX. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $170
PHX
Sky Harbor Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $170
Flights from Ontario (ONT) to Phoenix (DVT)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Phoenix Deer Valley
Distance
316 mi

Ontario to Phoenix Flights

The cheapest times to fly from Ontario to Phoenix

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Phoenix are during the month of . You can find some of the cheapest flights from Ontario to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Phoenix

Sunday is one of the best days to book for cheap flights from Ontario to Phoenix: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Phoenix

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Phoenix in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Phoenix flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Phoenix airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) cost?
You can find cheap one-way flights and cheap return flights ONT to DVT with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to DVT ticket fares go up or down.
What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley)?
The cheapest month to fly from ONT to DVT is when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley)?
Enter ONT to DVT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from ONT to DVT. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley)?
Select the "Business class" and "First class" filters when looking for ONT to DVT flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Phoenix from Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly into Sky Harbor Intl. (PHX) to reach Phoenix. Some flights may connect through major hubs like San Francisco Intl. (SFO), Sacramento Intl. (SMF), Norman Y. Mineta San Jose Intl. (SJC) before reaching Phoenix. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) Phoenix Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Phoenix, AZ (DVT-Phoenix Deer Valley) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

Explore a world of travel with Expedia

*Available to One Key members.