$58+ Cheap flights from Ontario (ONT) to Mesa, AZ
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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHX
Oct 14 — Oct 211
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Mesa 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 Mesa are usually found in October or April, booked 60 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday
Cheap flight deals from Ontario to Mesa
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to MesaExplore the most affordable flight options available from Ontario to Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
Explore the most affordable flight options available from Ontario to Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/84:29 pm -
Nonstop1h 23m
Mon 10/125:24 pm -
Nonstop1h 19m
Deal found 9/10![American Airlines logo]()
$117
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/17:11 pm -
Nonstop1h 20m
Mon 10/59:34 pm -
Nonstop1h 19m
Deal found 9/10![American Airlines logo]()
$118
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:15 am -
1 stop8h 02m
Tue 10/63:21 pm -
1 stop8h 26m
Deal found 9/9![Frontier logo]()
$124
This Southwest deal was found by Cheapflights users on 9/10. 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 10/86:15 pm -
1 stop4h 55m
Mon 10/1210:35 pm -
Nonstop1h 15m
Deal found 9/10![Southwest logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:15 am -
1 stop13h 31m
Tue 10/278:59 pm -
1 stop13h 36m
Deal found 9/11![Frontier logo]()
$130
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:24 pm -
1 stop26h 23m
Mon 10/51:22 pm -
1 stop6h 14m
Deal found 9/9![Frontier logo]()
$131
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:35 pm -
1 stop15h 42m
Mon 10/267:38 pm -
1 stop14h 02m
Deal found 9/9![Frontier logo]()
$132
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Thu 10/18:00 am -
1 stop4h 22m
Mon 10/57:24 pm -
1 stop13h 45m
Deal found 9/10![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 9/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:38 pm -
1 stop9h 40m
Sat 10/178:16 am -
1 stop8h 14m
Deal found 9/9![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 9/9. 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 10/238:00 am -
1 stop4h 17m
Tue 10/277:30 am -
1 stop8h 51m
Deal found 9/9![Frontier logo]()
$136
Best flights from Ontario to MesaDiscover carefully curated flight deals from Ontario to Mesa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
Discover carefully curated flight deals from Ontario to Mesa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
This Southwest deal was found by Cheapflights users on 9/9. 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.
Wed 10/77:20 pm -
Nonstop1h 20m
Wed 10/148:20 am -
Nonstop1h 25m
Deal found 9/9![Southwest logo]()
$117
This Southwest deal was found by Cheapflights users on 9/9. 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.
Wed 10/76:25 pm -
1 stop3h 50m
Thu 10/82:30 pm -
Nonstop1h 20m
Deal found 9/9![Southwest logo]()
$127
This Southwest deal was found by Cheapflights users on 9/10. 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 1/117:40 am -
Nonstop1h 10m
Sat 1/1611:10 am -
2 stops7h 35m
Deal found 9/10![Southwest logo]()
$132
This Southwest deal was found by Cheapflights users on 9/9. 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.
Wed 10/76:20 am -
1 stop4h 40m
Fri 10/910:35 pm -
Nonstop1h 15m
Deal found 9/9![Southwest logo]()
$154
This Southwest deal was found by Cheapflights users on 9/10. 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 11/235:00 am -
Nonstop1h 15m
Fri 11/277:45 am -
Nonstop1h 15m
Deal found 9/10![Southwest logo]()
$172
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.
Sat 12/55:35 am -
Nonstop1h 15m
Mon 12/74:10 pm -
2 stops6h 10m
Deal found 9/14![Southwest logo]()
$187
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.
Fri 11/205:20 pm -
Nonstop1h 20m
Mon 11/233:05 pm -
Nonstop1h 20m
Deal found 9/13![Southwest logo]()
$247
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 10/1711:30 am -
1 stop6h 25m
Mon 10/1911:45 am -
2 stops5h 50m
Deal found 9/13![Southwest logo]()
$252
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.
Thu 12/36:25 pm -
Nonstop1h 25m
Fri 12/47:00 am -
1 stop3h 45m
Deal found 9/13![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 9/12. 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 10/165:20 am -
Nonstop1h 15m
Mon 10/194:15 pm -
1 stop6h 00m
Deal found 9/12![Southwest logo]()
$257
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.
Sat 11/1410:30 am -
1 stop3h 40m
Mon 11/163:50 pm -
Nonstop1h 20m
Deal found 9/14![Southwest logo]()
$257
Last-minute flights from Ontario to MesaDiscover last-minute flight deals from Ontario to Mesa. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Mesa. Data last updated September 14, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/17:11 pm -
Nonstop1h 20m
Mon 10/59:34 pm -
Nonstop1h 19m
Deal found 9/10![American Airlines logo]()
$118
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Thu 10/18:00 am -
1 stop4h 22m
Mon 10/57:24 pm -
1 stop13h 45m
Deal found 9/10![Frontier logo]()
$133
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:24 pm -
1 stop26h 23m
Mon 10/51:22 pm -
1 stop6h 14m
Deal found 9/9![Frontier logo]()
$131
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:15 am -
1 stop8h 02m
Tue 10/63:21 pm -
1 stop8h 26m
Deal found 9/9![Frontier logo]()
$124
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/84:29 pm -
Nonstop1h 23m
Mon 10/125:24 pm -
Nonstop1h 19m
Deal found 9/10![American Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 9/10. 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 10/86:15 pm -
1 stop4h 55m
Mon 10/1210:35 pm -
Nonstop1h 15m
Deal found 9/10![Southwest logo]()
$127
This Super.com deal was found by Cheapflights users on 9/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:38 pm -
1 stop9h 40m
Sat 10/178:16 am -
1 stop8h 14m
Deal found 9/9![Frontier logo]()
$135
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:35 pm -
1 stop15h 42m
Mon 10/267:38 pm -
1 stop14h 02m
Deal found 9/9![Frontier logo]()
$132
This Frontier deal was found by Cheapflights users on 9/9. 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 10/238:00 am -
1 stop4h 17m
Tue 10/277:30 am -
1 stop8h 51m
Deal found 9/9![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:15 am -
1 stop13h 31m
Tue 10/278:59 pm -
1 stop13h 36m
Deal found 9/11![Frontier logo]()
$130
One-way flights from Ontario to MesaSearch for one-way flight options from Ontario to Mesa. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
Search for one-way flight options from Ontario to Mesa. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
This Super.com deal was found by Cheapflights users on 9/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:45 am -
1 stop8h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$58
This Southwest deal was found by Cheapflights users on 9/10. 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 11/106:25 pm -
Nonstop1h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Southwest logo]()
$59
This Frontier deal was found by Cheapflights users on 9/9. 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.
Sat 10/245:25 pm -
1 stop5h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$60
This Super.com deal was found by Cheapflights users on 9/10. 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 10/1311:26 am -
1 stop4h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$63
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Wed 10/1411:26 am -
1 stop4h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$64
This Frontier deal was found by Cheapflights users on 9/9. 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.
Thu 11/52:23 pm -
1 stop7h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$65
This Jetabroad deal was found by Cheapflights users on 9/10. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:23 pm -
1 stop3h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$66
This Super.com deal was found by Cheapflights users on 9/10. 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 11/138:35 pm -
1 stop15h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$68
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:24 pm -
1 stop26h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$69
This Booking.com deal was found by Cheapflights users on 9/10. 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 10/81:38 pm -
1 stop9h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$70
This Trip.com deal was found by Cheapflights users on 9/10. 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 11/162:23 pm -
1 stop22h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$71
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:38 pm -
1 stop9h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$72
Find flight deals from Ontario to Mesa
Keep the following information in mind while searching for Ontario to Mesa flight deals. Data was last updated September 14, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $117 (Southwest) |
One-way from | $58 (Super.com) |
Popular in | July |
Cheapest in | October |
Average price | $270 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Mesa 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 14, 2026.
Use the filters below to find and compare flights from Ontario to Mesa 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
Tue 12/8
3:05 pm-9:25 pm
2 stops5h 20m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$74
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Wed 10/7
7:20 pm-8:40 pm
Nonstop1h 20m
Phoenix Sky Harbor Intl
Wed 10/14
8:20 am-9:45 am
Nonstop1h 25m
$117
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Wed 11/11
6:25 pm-8:50 pm
Nonstop1h 25m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Wed 10/7
6:25 pm-10:15 pm
1 stop3h 50m
Phoenix Sky Harbor Intl
Thu 10/8
2:30 pm-3:50 pm
Nonstop1h 20m
$127
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Tue 1/5
5:00 am-1:20 pm
1 stop7h 20m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$131
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Wed 1/20
6:00 am-1:24 pm
1 stop6h 24m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$131
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Mon 1/11
7:40 am-9:50 am
Nonstop1h 10m
Phoenix Sky Harbor Intl
Sat 1/16
11:10 am-5:45 pm
2 stops7h 35m
$132
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Wed 10/7
6:20 am-11:00 am
1 stop4h 40m
Phoenix Sky Harbor Intl
Fri 10/9
10:35 pm-11:50 pm
Nonstop1h 15m
$154
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Mon 3/8
6:53 pm-12:55 am
1 stop5h 02m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$159
OntarioPhoenix
ONT Ontario - PHX Phoenix Sky Harbor Intl
ONTPHX
Ontario
Sat 3/13
4:45 pm-10:10 pm
1 stop4h 25m
Phoenix Sky Harbor Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$164
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Ontario to Mesa
Have a flexible travel schedule? Discover the best time to fly to Mesa 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 Mesa
ONT-MS9
ONT-PHX
What is the cheapest time of day to fly from ONT to MS9?
Find hourly flight availability from Ontario to Mesa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2026.
It’s typically best to fly out from Ontario to Mesa in the afternoon. Doing so could potentially save you 13% on the flight price compared to flying in the evening, which is usually more expensive.
Weekly flight availability from Ontario to Mesa
Explore weekly flight availability from Ontario to Mesa. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 14, 2026.
The most flights from ONT to MS9 are scheduled on a Sunday (11 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Ontario to Mesa?
Airfare is below average for this route at the moment.
Ontario to Mesa flights typically cost between $181 and $397 in October.The cheapest round-trip price found within the last 5 days was $117 on Southwest (Oct 7-Oct 14).
What is the cheapest day to fly from Ontario to Mesa?
Use this chart to determine the cheapest time to fly round-trip from Ontario to Mesa. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Ontario to Mesa flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Mesa
Get insights into the airlines that provide service to Mesa. 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 Mesa. Reviews last updated September 14, 2026.
See what other customers who have flown with Southwest,American Airlines, andJetBlue from Ontario to Mesa have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
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Ontario and Mesa flights
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Top 4 airlines flying from Ontario to Mesa
Discover the top 4 airlines that operate flights from Ontario to Mesa. 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 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$169 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$117 | Average$285 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$151 | Average$315 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$308 | FlexibilityNo cancel fee | On-time62% |