$58+ Cheap flights from Mesa, AZ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Mesa 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 Mesa 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 Mesa to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Mesa to OntarioExplore the most affordable flight options available from Mesa to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Mesa to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:45 am -
Nonstop1h 15m
Tue 10/139:15 am -
Nonstop1h 15m
Deal found 9/8![Southwest logo]()
$117
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 10/33:21 pm -
1 stop8h 26m
Tue 10/611:45 am -
1 stop8h 06m
Deal found 9/9![Frontier logo]()
$118
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:49 pm -
1 stop19h 42m
Wed 10/1411:52 am -
1 stop5h 25m
Deal found 9/8![Frontier logo]()
$124
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:20 am -
1 stop8h 56m
Fri 10/28:24 pm -
1 stop26h 23m
Deal found 9/9![Frontier logo]()
$128
This Expedia 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 Expedia 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 9/9![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.
Thu 10/11:22 pm -
1 stop6h 14m
Fri 10/28:24 pm -
1 stop26h 23m
Deal found 9/9![Frontier logo]()
$131
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:10 am -
2 stops6h 30m
Mon 10/54:15 pm -
Nonstop1h 20m
Deal found 9/8![Southwest logo]()
$132
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:16 am -
1 stop8h 14m
Thu 10/228:35 pm -
1 stop15h 42m
Deal found 9/9![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 9/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:21 am -
1 stop11h 19m
Mon 10/192:28 pm -
1 stop8h 50m
Deal found 9/8![Frontier logo]()
$135
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:49 pm -
1 stop19h 42m
Thu 10/151:38 pm -
1 stop9h 40m
Deal found 9/8![Frontier logo]()
$138
Best flights from Mesa to OntarioDiscover carefully curated flight deals from Mesa to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Mesa to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 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 10/78:20 am -
Nonstop1h 25m
Wed 10/147:20 pm -
Nonstop1h 20m
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.
Mon 11/910:40 pm -
Nonstop1h 15m
Mon 11/165:55 am -
Nonstop1h 20m
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.
Thu 10/17:45 am -
1 stop4h 40m
Tue 10/66:10 am -
Nonstop1h 15m
Deal found 9/9![Southwest logo]()
$127
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:55 am -
1 stop5h 05m
Mon 10/2611:00 am -
1 stop6h 05m
Deal found 9/8![Southwest logo]()
$137
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 10/156:00 pm -
1 stop3h 45m
Mon 10/196:15 pm -
1 stop4h 55m
Deal found 9/10![Southwest logo]()
$137
This Southwest deal was found by Cheapflights users on 9/5. 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.
Fri 10/1610:10 am -
Nonstop1h 15m
Mon 10/196:55 pm -
Nonstop1h 15m
Deal found 9/5![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 9/5. 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 10/52:30 pm -
Nonstop1h 20m
Mon 10/126:55 pm -
Nonstop1h 15m
Deal found 9/5![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 9/6. 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 10/85:10 pm -
1 stop5h 05m
Mon 10/121:05 pm -
Nonstop1h 15m
Deal found 9/6![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 9/6. 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 10/167:50 am -
Nonstop1h 15m
Sat 10/173:10 pm -
1 stop5h 00m
Deal found 9/6![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 9/5. 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 10/311:25 am -
1 stop4h 35m
Sat 10/104:40 pm -
Nonstop1h 20m
Deal found 9/5![Southwest logo]()
$261
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:35 pm -
Nonstop1h 15m
Sun 10/2512:55 pm -
Nonstop1h 15m
Deal found 9/8![Southwest logo]()
$275
Last-minute flights from Mesa to OntarioDiscover last-minute flight deals from Mesa to Ontario. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Mesa to Ontario. Data last updated September 10, 2026 and is based on user searches.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:20 am -
1 stop8h 56m
Fri 10/28:24 pm -
1 stop26h 23m
Deal found 9/9![Frontier logo]()
$128
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:10 am -
2 stops6h 30m
Mon 10/54:15 pm -
Nonstop1h 20m
Deal found 9/8![Southwest logo]()
$132
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.
Thu 10/11:22 pm -
1 stop6h 14m
Fri 10/28:24 pm -
1 stop26h 23m
Deal found 9/9![Frontier logo]()
$131
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 10/33:21 pm -
1 stop8h 26m
Tue 10/611:45 am -
1 stop8h 06m
Deal found 9/9![Frontier logo]()
$118
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:45 am -
Nonstop1h 15m
Tue 10/139:15 am -
Nonstop1h 15m
Deal found 9/8![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.
Sat 10/104:40 pm -
Nonstop1h 20m
Mon 10/126:15 pm -
1 stop4h 55m
Deal found 9/9![Southwest logo]()
$127
This Expedia 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 Expedia 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 9/9![Frontier logo]()
$130
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:49 pm -
1 stop19h 42m
Wed 10/1411:52 am -
1 stop5h 25m
Deal found 9/8![Frontier logo]()
$124
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:49 pm -
1 stop19h 42m
Thu 10/151:38 pm -
1 stop9h 40m
Deal found 9/8![Frontier logo]()
$138
This Frontier deal was found by Cheapflights users on 9/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:21 am -
1 stop11h 19m
Mon 10/192:28 pm -
1 stop8h 50m
Deal found 9/8![Frontier logo]()
$135
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:16 am -
1 stop8h 14m
Thu 10/228:35 pm -
1 stop15h 42m
Deal found 9/9![Frontier logo]()
$133
One-way flights from Mesa to OntarioSearch for one-way flight options from Mesa to Ontario. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Mesa to Ontario. Find affordable one-way fares based on user searches. Data last updated September 10, 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.
Mon 11/22:45 pm -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$58
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:35 pm -
Nonstop1h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Southwest logo]()
$59
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:30 am -
1 stop3h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$62
This Super.com deal was found by Cheapflights users on 9/8. 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 10/122:49 pm -
1 stop25h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$63
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.
Tue 10/139:20 pm -
1 stop19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![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.
Sat 11/73:46 pm -
1 stop9h 05m
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.
Wed 11/187:15 am -
1 stop17h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$67
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.
Thu 10/18:27 am -
1 stop8h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$68
This Southwest deal was found by Cheapflights users on 9/7. 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.
Wed 10/75:50 am -
1 stop4h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Southwest logo]()
$69
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.
Tue 11/173:46 pm -
1 stop9h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$70
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.
Tue 10/66:45 am -
2 stops6h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Southwest logo]()
$74
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 11/68:30 am -
1 stop3h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$76
Find flight deals from Mesa to Ontario
Keep the following information in mind while searching for Mesa to Ontario flight deals. Data was last updated September 10, 2026.
Round-trip from | $117 (Southwest) |
|---|---|
One-way from | $58 (Super.com) |
Popular in | June |
Cheapest in | October |
Average price | $224 |
Cheapflights Fare Finder
Customize your flight search to find flights from Mesa 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 10, 2026.
Use the filters below to find and compare flights from Mesa to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Tue 10/6
8:20 am-9:45 am
Nonstop1h 25m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$59
Quickest round-trip
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Mon 10/12
10:35 pm-11:50 pm
Nonstop1h 15m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$59
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Wed 12/9
4:10 pm-9:20 pm
2 stops6h 10m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$74
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
$74
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Wed 12/16
9:22 pm-1:43 pm
1 stop17h 21m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$97
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Thu 12/17
6:00 am-1:43 pm
1 stop8h 43m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$98
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Mon 3/8
10:50 pm-11:05 pm
Nonstop1h 15m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$114
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Wed 10/7
8:20 am-9:45 am
Nonstop1h 25m
Ontario
Wed 10/14
7:20 pm-8:40 pm
Nonstop1h 20m
$117
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Mon 11/9
10:40 pm-10:55 pm
Nonstop1h 15m
Ontario
Mon 11/16
5:55 am-8:15 am
Nonstop1h 20m
$117
PhoenixOntario
PHX Phoenix Sky Harbor Intl - ONT Ontario
PHXONT
Phoenix Sky Harbor Intl
Thu 10/1
7:45 am-12:25 pm
1 stop4h 40m
Ontario
Tue 10/6
6:10 am-7:25 am
Nonstop1h 15m
$127
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Mesa to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Mesa 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 Mesa to Ontario
MS9-ONT
PHX-ONT
What is the cheapest time of day to fly from MS9 to ONT?
Find hourly flight availability from Mesa 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 10, 2026.
One of the essential ways to save on airfare from Mesa to Ontario is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 31% on airfare.
How much does it cost to fly round-trip from Mesa to Ontario?
Airfare is below average for this route at the moment.
Mesa to Ontario flights typically cost between $154 and $342 in October.The cheapest round-trip price found within the last 5 days was $117 on Southwest (Oct 10-Oct 13).
What is the cheapest day to fly from Mesa to Ontario?
Use this chart to determine the cheapest time to fly round-trip from Mesa to Ontario. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their Mesa 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.
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 10, 2026.
Peruse reviews from past customers who have flown with Southwest,American Airlines, andJetBlue from Mesa to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
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Top 4 airlines flying from Mesa to Ontario
Discover the top 4 airlines that operate flights from Mesa 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$84 | Average$179 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$105 | Average$285 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$117 | Average$265 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$192 | Average$452 | FlexibilityNo cancel fee | On-time62% |