$59+ Cheap flights from Ontario (ONT) to Sky Harbor Intl (PHX)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHX
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Sky Harbor Intl 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 Ontario to Phoenix Sky Harbor Intl are usually found in September or October, booked 41 days in advance, depart on a Wednesday or Thursday and return on a Tuesday
Cheap flight deals from Ontario to Sky Harbor Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to Sky Harbor IntlExplore the most affordable flight options available from Ontario to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
Explore the most affordable flight options available from Ontario to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
This Southwest deal was found by Cheapflights users on 8/5. 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 9/53:15 pm -
Nonstop1h 20m
Sun 9/69:10 am -
Nonstop1h 25m
Deal found 8/5![Southwest logo]()
$117
This American Airlines deal was found by Cheapflights users on 8/7. 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 9/512:59 pm -
Nonstop1h 26m
Sun 9/66:04 pm -
Nonstop1h 11m
Deal found 8/7![American Airlines logo]()
$118
This Southwest deal was found by Cheapflights users on 8/5. 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 9/35:15 am -
Nonstop1h 15m
Sun 9/69:10 am -
Nonstop1h 25m
Deal found 8/5![Southwest logo]()
$134
This deal was found by Cheapflights users on 8/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:19 am -
1 stop5h 31m
Mon 11/232:07 pm -
1 stop5h 02m
Deal found 8/8![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 8/7. 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 9/26:00 am -
1 stop7h 17m
Sat 9/54:48 pm -
1 stop7h 02m
Deal found 8/7![Frontier logo]()
$141
This Frontier deal was found by Cheapflights users on 8/6. 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 8/299:37 am -
1 stop13h 23m
Sat 9/510:09 pm -
1 stop9h 54m
Deal found 8/6![Frontier logo]()
$142
This FlightHub deal was found by Cheapflights users on 8/5. 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.
Tue 8/256:00 am -
1 stop7h 17m
Wed 8/264:48 pm -
1 stop7h 02m
Deal found 8/5![Frontier logo]()
$145
This Frontier deal was found by Cheapflights users on 8/5. 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 10/911:16 am -
1 stop5h 34m
Tue 10/136:30 am -
1 stop3h 51m
Deal found 8/5![Frontier logo]()
$147
This Southwest deal was found by Cheapflights users on 8/6. 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 9/115:15 am -
Nonstop1h 15m
Sat 9/121:25 pm -
2 stops6h 40m
Deal found 8/6![Southwest logo]()
$149
Best flights from Ontario to Sky Harbor IntlDiscover carefully curated flight deals from Ontario to Sky Harbor Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
Discover carefully curated flight deals from Ontario to Sky Harbor Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
This Southwest deal was found by Cheapflights users on 8/5. 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 9/35:15 am -
Nonstop1h 15m
Sun 9/69:10 am -
Nonstop1h 25m
Deal found 8/5![Southwest logo]()
$134
This Frontier deal was found by Cheapflights users on 8/9. 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 10/162:58 pm -
1 stop6h 37m
Mon 10/196:30 am -
1 stop3h 51m
Deal found 8/9![Frontier logo]()
$152
This Southwest deal was found by Cheapflights users on 8/7. 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 10/191:05 pm -
Nonstop1h 15m
Tue 10/208:45 pm -
Nonstop1h 15m
Deal found 8/7![Southwest logo]()
$151
This Southwest deal was found by Cheapflights users on 8/5. 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 9/102:40 pm -
Nonstop1h 20m
Mon 9/141:55 pm -
Nonstop1h 10m
Deal found 8/5![Southwest logo]()
$151
This Southwest deal was found by Cheapflights users on 8/6. 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 10/86:55 pm -
Nonstop1h 15m
Wed 10/145:40 am -
1 stop4h 40m
Deal found 8/6![Southwest logo]()
$161
This Frontier deal was found by Cheapflights users on 8/9. 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 9/2511:45 am -
1 stop11h 58m
Sun 9/278:00 am -
1 stop3h 22m
Deal found 8/9![Frontier logo]()
$202
This Southwest deal was found by Cheapflights users on 8/6. 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 8/295:50 am -
Nonstop1h 15m
Mon 8/313:55 pm -
1 stop5h 30m
Deal found 8/6![Southwest logo]()
$161
This Southwest deal was found by Cheapflights users on 8/4. 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 9/254:10 pm -
1 stop5h 40m
Mon 9/281:55 pm -
Nonstop1h 10m
Deal found 8/4![Southwest logo]()
$189
This Frontier deal was found by Cheapflights users on 8/9. 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.
Sun 9/272:30 pm -
1 stop8h 17m
Sun 10/116:30 am -
1 stop9h 40m
Deal found 8/9![Frontier logo]()
$252
This Southwest deal was found by Cheapflights users on 8/9. 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 11/1912:50 pm -
Nonstop1h 15m
Mon 11/2310:30 am -
Nonstop1h 20m
Deal found 8/9![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 8/9. 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.
Sun 9/63:25 pm -
Nonstop1h 20m
Sun 9/135:45 am -
1 stop4h 55m
Deal found 8/9![Southwest logo]()
$248
Last-minute flights from Ontario to Sky Harbor IntlDiscover last-minute flight deals from Ontario to Sky Harbor Intl. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Sky Harbor Intl. Data last updated August 10, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 8/5. 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.
Tue 8/256:00 am -
1 stop7h 17m
Wed 8/264:48 pm -
1 stop7h 02m
Deal found 8/5![Frontier logo]()
$145
This Frontier deal was found by Cheapflights users on 8/7. 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 8/297:56 pm -
1 stop11h 44m
Mon 8/314:48 pm -
1 stop7h 02m
Deal found 8/7![Frontier logo]()
$142
This Super.com deal was found by Cheapflights users on 8/7. 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 9/26:00 am -
1 stop7h 17m
Sat 9/54:48 pm -
1 stop7h 02m
Deal found 8/7![Frontier logo]()
$141
This Southwest deal was found by Cheapflights users on 8/5. 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 9/35:15 am -
Nonstop1h 15m
Sun 9/69:10 am -
Nonstop1h 25m
Deal found 8/5![Southwest logo]()
$134
This Southwest deal was found by Cheapflights users on 8/5. 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 9/53:15 pm -
Nonstop1h 20m
Sun 9/69:10 am -
Nonstop1h 25m
Deal found 8/5![Southwest logo]()
$117
This American Airlines deal was found by Cheapflights users on 8/7. 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 9/512:59 pm -
Nonstop1h 26m
Sun 9/66:04 pm -
Nonstop1h 11m
Deal found 8/7![American Airlines logo]()
$118
This Frontier deal was found by Cheapflights users on 8/7. 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 9/112:30 pm -
1 stop8h 17m
Sat 9/123:21 pm -
1 stop8h 26m
Deal found 8/7![Frontier logo]()
$147
This Southwest deal was found by Cheapflights users on 8/6. 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 9/115:15 am -
Nonstop1h 15m
Sat 9/121:25 pm -
2 stops6h 40m
Deal found 8/6![Southwest logo]()
$149
This Southwest deal was found by Cheapflights users on 8/5. 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 9/218:40 pm -
Nonstop1h 20m
Mon 9/281:55 pm -
Nonstop1h 10m
Deal found 8/5![Southwest logo]()
$151
One-way flights from Ontario to Sky Harbor IntlSearch for one-way flight options from Ontario to Sky Harbor Intl. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
Search for one-way flight options from Ontario to Sky Harbor Intl. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Southwest deal was found by Cheapflights users on 8/5. 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 9/53:15 pm -
Nonstop1h 20m
Deal found 8/5![Southwest logo]()
$59
This Super.com deal was found by Cheapflights users on 8/5. 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.
Tue 9/16:00 am -
1 stop7h 17m
Deal found 8/5![Frontier logo]()
$70
This Booking.com deal was found by Cheapflights users on 8/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:00 am -
1 stop4h 22m
Deal found 8/6![Frontier logo]()
$71
This Super.com deal was found by Cheapflights users on 8/8. 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.
Sat 9/1211:45 am -
1 stop8h 06m
Deal found 8/8![Frontier logo]()
$74
This Super.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/1811:45 am -
1 stop8h 06m
Deal found 8/7![Frontier logo]()
$75
This Frontier deal was found by Cheapflights users on 8/7. 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 10/28:00 am -
1 stop4h 22m
Deal found 8/7![Frontier logo]()
$76
This Frontier deal was found by Cheapflights users on 8/4. 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 9/53:40 pm -
1 stop7h 44m
Deal found 8/4![Frontier logo]()
$77
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:58 pm -
1 stop19h 51m
Deal found 8/5![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 8/4. 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.
Fri 9/410:17 pm -
1 stop14h 31m
Deal found 8/4![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 8/8. 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 9/2812:07 pm -
1 stop27h 16m
Deal found 8/8![Frontier logo]()
$81
Find flight deals from Ontario to Sky Harbor Intl
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Sky Harbor Intl (PHX). 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 August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $117 (Southwest) |
One-way from | $59 (Southwest) |
Popular in | July |
Cheapest in | September |
Average price | $273 |
Good round-trip deal | $346 or less |
Good one-way deal | $202 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Sky Harbor Intl 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 2,558,603 searches. Data last updated August 10, 2026.
Use the filters below to find and compare flights from Ontario to Phoenix Sky Harbor Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Thu 9/3
5:15 am-6:30 am
Nonstop1h 15m
Phoenix Sky Harbor Intl
Sun 9/6
9:10 am-10:35 am
Nonstop1h 25m
$134
Quickest round-trip
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Mon 10/19
1:05 pm-2:20 pm
Nonstop1h 15m
Phoenix Sky Harbor Intl
Tue 10/20
8:45 pm-10:00 pm
Nonstop1h 15m
$151
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Thu 9/10
2:40 pm-4:00 pm
Nonstop1h 20m
Phoenix Sky Harbor Intl
Mon 9/14
1:55 pm-3:05 pm
Nonstop1h 10m
$151
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Fri 10/16
2:58 pm-9:35 pm
1 stop6h 37m
Phoenix Sky Harbor Intl
Mon 10/19
6:30 am-10:21 am
1 stop3h 51m
$152
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Thu 10/8
6:55 pm-8:10 pm
Nonstop1h 15m
Phoenix Sky Harbor Intl
Wed 10/14
5:40 am-10:20 am
1 stop4h 40m
$161
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Sat 8/29
5:50 am-7:05 am
Nonstop1h 15m
Phoenix Sky Harbor Intl
Mon 8/31
3:55 pm-9:25 pm
1 stop5h 30m
$161
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Fri 9/25
4:10 pm-9:50 pm
1 stop5h 40m
Phoenix Sky Harbor Intl
Mon 9/28
1:55 pm-3:05 pm
Nonstop1h 10m
$189
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Fri 9/25
11:45 am-11:43 pm
1 stop11h 58m
Phoenix Sky Harbor Intl
Sun 9/27
8:00 am-11:22 am
1 stop3h 22m
$202
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Thu 11/19
12:50 pm-3:05 pm
Nonstop1h 15m
Phoenix Sky Harbor Intl
Mon 11/23
10:30 am-10:50 am
Nonstop1h 20m
$207
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Sun 9/6
3:25 pm-4:45 pm
Nonstop1h 20m
Phoenix Sky Harbor Intl
Sun 9/13
5:45 am-10:40 am
1 stop4h 55m
$248
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Ontario to Sky Harbor Intl
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 Ontario to Sky Harbor Intl in August.
| 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*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Phoenix Sky Harbor Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Phoenix Sky Harbor Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Phoenix Sky Harbor Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Phoenix Sky Harbor Intl Airport 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 Ontario-Phoenix Sky Harbor Intl Airport 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 Ontario to Sky Harbor Intl
Have a flexible travel schedule? Discover the best time to fly to Sky Harbor Intl from Ontario with our price prediction graph.
ONT-PHX
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 Ontario to Phoenix Sky Harbor Intl Airport
Prices
Airlines
More
How far ahead should I book a flight from Ontario to Phoenix Sky Harbor Intl Airport?
Booking 40 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Phoenix Sky Harbor Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Ontario to Phoenix Sky Harbor Intl Airport?
Currently, September is the cheapest month in which you can book a flight from Ontario to Phoenix Sky Harbor Intl Airport (average of $173). Flying from Ontario to Phoenix Sky Harbor Intl Airport in July is currently the most expensive (average of $446). 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 ONT to PHX?
Find hourly flight availability from Ontario to Sky Harbor Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 10, 2026.
It’s optimal to fly from Ontario to Phoenix Sky Harbor Intl Airport at noon. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the evening.
What is the cheapest day to fly from Ontario to Phoenix Sky Harbor Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Ontario to Sky Harbor Intl. Price data was last updated on August 1, 2026.
Travelers seeking maximum savings on their Ontario to Phoenix Sky Harbor Intl Airport flight should consider departing on Friday 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 Ontario to Phoenix Sky Harbor Intl Airport?
Share of 1-stop round-trip flights from Ontario to Phoenix Sky Harbor Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Las Vegas (LAS) – chosen by Cheapflights users on 88% of 1-stop itineraries from Ontario to Phoenix Sky Harbor Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from Ontario to Phoenix Sky Harbor Intl Airport?
Average round-trip fare for 1-stop flights from Ontario to Phoenix Sky Harbor Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $176.
What’s the fastest layover option from Ontario to Phoenix Sky Harbor Intl Airport?
Shortest average travel time for 1-stop one-way flights from Ontario to Phoenix Sky Harbor Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Salt Lake City (SLC) have the shortest average one-way travel time for 1-stop routes: 4h 42m.
Which airport typically offers the quickest layover for flights from Ontario to Phoenix Sky Harbor Intl Airport?
Average layover duration for 1-stop one-way flights from Ontario to Phoenix Sky Harbor Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Salt Lake City (SLC) offer the fastest connection on this route, with an average layover time of 3h 42m.
The best insider tips for Ontario to Phoenix Sky Harbor Intl Airport 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 Ontario to Phoenix Sky Harbor Intl Airport trip
Our travel experts
Reviews of airlines servicing Sky Harbor Intl
Get insights into the airlines that provide service to Sky Harbor Intl. 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 Sky Harbor Intl. Reviews last updated August 10, 2026.
Read through reviews of airlines operating flights from Ontario to Phoenix Sky Harbor Intl Airport, such as Southwest,American Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to Sky Harbor Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Phoenix Sky Harbor Intl Airport?
Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locationsGlendale
Buckeye
Goodyear
Payson
Surprise
Wickenburg
Paradise Valley
Peoria
Chandler
Casa Grande
Camp Verde
Globe
Fountain Hills
Guadalupe
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Ontario and Sky Harbor Intl flights
Browse other Ontario and Sky Harbor Intl flight options. Last updated on August 10, 2026.
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Top 4 airlines flying from Ontario to Sky Harbor Intl
Discover the top 4 airlines that operate flights from Ontario to Sky Harbor Intl. 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 2,558,603 searches. Data last updated August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$72 | Average$161 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$115 | Average$274 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$124 | Average$304 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$308 | FlexibilityNo cancel fee | On-time62% |