$59+ Cheap flights from Sky Harbor Intl (PHX) to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
Oct 18 — Oct 251
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Sky Harbor Intl to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Ontario are usually found in October or February, booked 37 days in advance, depart on a Tuesday or Saturday and return on a Wednesday
Cheap flight deals from Sky Harbor Intl to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sky Harbor Intl to OntarioExplore the most affordable flight options available from Sky Harbor Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
Explore the most affordable flight options available from Sky Harbor Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:30 am -
1 stop3h 46m
Thu 10/292:23 pm -
1 stop3h 12m
Deal found 9/18![Frontier logo]()
$113
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:35 pm -
Nonstop1h 15m
Mon 10/196:55 pm -
Nonstop1h 15m
Deal found 9/18![Southwest logo]()
$117
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:16 am -
1 stop8h 14m
Mon 10/128:35 pm -
1 stop15h 42m
Deal found 9/18![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:30 am -
1 stop8h 51m
Thu 10/292:23 pm -
1 stop3h 12m
Deal found 9/18![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:16 am -
1 stop8h 14m
Mon 10/262:28 pm -
1 stop8h 50m
Deal found 9/18![Frontier logo]()
$135
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:00 pm -
Nonstop1h 16m
Fri 10/97:34 pm -
Nonstop1h 25m
Deal found 9/17![American Airlines logo]()
$144
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:10 pm -
Nonstop1h 15m
Sat 10/2411:30 am -
1 stop4h 20m
Deal found 9/17![Southwest logo]()
$154
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:20 am -
Nonstop1h 25m
Sat 10/175:30 am -
Nonstop1h 15m
Deal found 9/15![Southwest logo]()
$159
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:01 am -
1 stop11h 47m
Wed 10/216:15 am -
1 stop11h 02m
Deal found 9/16![Frontier logo]()
$160
Best flights from Sky Harbor Intl to OntarioDiscover carefully curated flight deals from Sky Harbor Intl to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Sky Harbor Intl to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:45 pm -
Nonstop1h 20m
Thu 10/86:15 pm -
1 stop4h 55m
Deal found 9/16![Southwest logo]()
$180
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:40 am -
1 stop6h 20m
Sat 10/1711:30 am -
1 stop6h 25m
Deal found 9/14![Southwest logo]()
$180
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:30 am -
Nonstop1h 25m
Mon 11/24:00 pm -
1 stop3h 55m
Deal found 9/13![Southwest logo]()
$181
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:35 am -
1 stop4h 05m
Wed 11/43:50 pm -
Nonstop1h 20m
Deal found 9/17![Southwest logo]()
$181
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:10 pm -
1 stop5h 05m
Tue 10/275:00 pm -
Nonstop1h 20m
Deal found 9/13![Southwest logo]()
$181
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:55 pm -
1 stop3h 50m
Mon 10/126:15 pm -
1 stop4h 55m
Deal found 9/16![Southwest logo]()
$201
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:50 am -
Nonstop1h 15m
Tue 10/137:20 pm -
Nonstop1h 20m
Deal found 9/18![Southwest logo]()
$201
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/199:00 am -
Nonstop1h 20m
Sat 11/285:10 am -
Nonstop1h 15m
Deal found 9/18![Southwest logo]()
$212
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:45 am -
2 stops6h 40m
Tue 12/13:05 pm -
2 stops5h 25m
Deal found 9/16![Southwest logo]()
$234
Last-minute flights from Sky Harbor Intl to OntarioDiscover last-minute flight deals from Sky Harbor Intl to Ontario. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Sky Harbor Intl to Ontario. Data last updated September 18, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:00 pm -
Nonstop1h 16m
Fri 10/97:34 pm -
Nonstop1h 25m
Deal found 9/17![American Airlines logo]()
$144
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:16 am -
1 stop8h 14m
Wed 10/146:15 am -
1 stop8h 54m
Deal found 9/18![Frontier logo]()
$118
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:20 am -
Nonstop1h 25m
Sat 10/175:30 am -
Nonstop1h 15m
Deal found 9/15![Southwest logo]()
$159
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:35 pm -
Nonstop1h 15m
Mon 10/196:55 pm -
Nonstop1h 15m
Deal found 9/18![Southwest logo]()
$117
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:21 am -
1 stop11h 19m
Mon 10/192:28 pm -
1 stop8h 50m
Deal found 9/18![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:16 am -
1 stop8h 14m
Mon 10/262:28 pm -
1 stop8h 50m
Deal found 9/18![Frontier logo]()
$135
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:10 pm -
Nonstop1h 15m
Sat 10/2411:30 am -
1 stop4h 20m
Deal found 9/17![Southwest logo]()
$154
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:30 am -
1 stop8h 51m
Thu 10/292:23 pm -
1 stop3h 12m
Deal found 9/18![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:30 am -
1 stop3h 46m
Thu 10/292:23 pm -
1 stop3h 12m
Deal found 9/18![Frontier logo]()
$113
One-way flights from Sky Harbor Intl to OntarioSearch for one-way flight options from Sky Harbor Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Sky Harbor Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:45 am -
Nonstop1h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$59
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:20 pm -
1 stop19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$65
This FlightHub deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:16 am -
1 stop25h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$68
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:35 am -
1 stop5h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Southwest logo]()
$69
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:45 am -
2 stops6h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Southwest logo]()
$74
This Super.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:22 pm -
1 stop5h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$79
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:46 am -
Nonstop1h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![American Airlines logo]()
$80
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:22 pm -
1 stop6h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$81
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/53:11 pm -
1 stop4h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/192:49 pm -
1 stop19h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$86
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:30 am -
1 stop6h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$90
Find flight deals from Sky Harbor Intl to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $113 (Frontier) |
One-way from | $59 (Southwest) |
Popular in | June |
Cheapest in | October |
Average price | $254 |
Good round-trip deal | $151 or less |
Good one-way deal | $138 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Sky Harbor Intl 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, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Sat 10/17
7:45 am-9:00 am
Nonstop1h 15m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$81
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Tue 10/27
8:25 am-1:25 pm
1 stop5h 00m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$90
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Wed 12/16
4:10 pm-9:20 pm
2 stops6h 10m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$96
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Thu 10/15
6:00 pm-9:45 pm
1 stop3h 45m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$101
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Mon 11/9
7:00 pm-10:00 pm
1 stop4h 00m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$101
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Fri 10/23
10:35 pm-11:50 pm
Nonstop1h 15m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$102
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Fri 11/6
10:40 pm-11:00 pm
Nonstop1h 20m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$102
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Fri 11/20
12:30 pm-2:51 pm
1 stop3h 21m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$104
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Mon 12/7
4:10 pm-9:20 pm
2 stops6h 10m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Tue 11/3
5:51 pm-6:10 pm
Nonstop1h 19m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$115
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Sky Harbor Intl to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sky Harbor Intl to Ontario in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Phoenix Sky Harbor Intl Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Sky Harbor Intl to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Sky Harbor Intl with our price prediction graph.
PHX-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Ontario
Prices
Airlines
More
How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Ontario?
The best time to book flights from Phoenix Sky Harbor Intl Airport to Ontario is 36 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Ontario?
Currently, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Ontario (average of $202). Flying from Phoenix Sky Harbor Intl Airport to Ontario in June is currently the most expensive (average of $330). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHX to ONT?
Find hourly flight availability from Sky Harbor Intl to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 18, 2026.
When flying from Phoenix Sky Harbor Intl Airport to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 32% versus a flight in the evening.
What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Ontario?
Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Ontario. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Ontario flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
What’s the top layover airport for flights from Phoenix Sky Harbor Intl Airport to Ontario?
Share of 1-stop round-trip flights from Phoenix Sky Harbor Intl Airport to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 50% of 1-stop itineraries from Phoenix Sky Harbor Intl Airport to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Phoenix Sky Harbor Intl Airport to Ontario?
Average round-trip fare for 1-stop flights from Phoenix Sky Harbor Intl Airport to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $137.
What’s the fastest layover option from Phoenix Sky Harbor Intl Airport to Ontario?
Shortest average travel time for 1-stop one-way flights from Phoenix Sky Harbor Intl Airport to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 36m.
Which airport typically offers the quickest layover for flights from Phoenix Sky Harbor Intl Airport to Ontario?
Average layover duration for 1-stop one-way flights from Phoenix Sky Harbor Intl Airport to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 2h 38m.
The best insider tips for Phoenix Sky Harbor Intl Airport to Ontario flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Phoenix Sky Harbor Intl Airport to Ontario trip
Our travel experts
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated September 18, 2026.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Ontario, such as Southwest,American Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Sky Harbor Intl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Other flights from Sky Harbor Intl
Popular flights
Alternative routes for Sky Harbor Intl to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Sky Harbor Intl to Ontario by cabin class
Find flights from Sky Harbor Intl to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Sky Harbor Intl and Ontario flights
Browse other Sky Harbor Intl and Ontario flight options. Last updated on September 18, 2026.
Other flights from Sky Harbor Intl
Browse through other flights departing from Sky Harbor Intl. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Sky Harbor Intl to Ontario
Discover the top 4 airlines that operate flights from Sky Harbor Intl to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$182 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$117 | Average$297 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$117 | Average$265 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$192 | Average$452 | FlexibilityNo cancel fee | On-time62% |