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$51+ Cheap flights from Ontario (ONT) to Mesa, AZ

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PHX
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Find cheap flights from Ontario to Mesa with Cheapflights

1. Tell us where you want to go
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The best prices from Ontario to Mesa are usually found in June or July, booked 56 days in advance, depart on a Friday or Saturday and return on a Wednesday

Cheap flight deals from Ontario to Mesa

Keep the following information in mind while searching for Ontario to Mesa flight deals. Data was last updated February 20, 2025.

Round-trip from

$119
(Frontier)

One-way from

$51
(Flightnetwork)

Popular in

December

Cheapest in

June

Average price

$216
From Ontario to Mesa
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One-way flight from Ontario to Mesa
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Highest demand for flights based on searches. 30% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Ontario to Mesa

Cheapest flights from Ontario to Mesa
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 February 20, 2025.

This Frontier deal was found by Cheapflights users on 2/18. 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.
Wed 4/92:43 pmONT - PHX
1 stop8h 25mFrontier
Sun 4/135:40 amPHX - ONT
1 stop8h 17mFrontier
Deal found 2/18$119
This Southwest deal was found by Cheapflights users on 2/20. 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 3/107:10 pmONT - PHX
Nonstop1h 15mSouthwest
Wed 3/123:45 pmPHX - ONT
1 stop6h 00mSouthwest
Deal found 2/20$127
This American Airlines deal was found by Cheapflights users on 2/20. 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 3/67:35 pmONT - PHX
Nonstop1h 16mAmerican Airlines
Fri 3/78:26 amPHX - ONT
Nonstop1h 21mAmerican Airlines
Deal found 2/20$162
This Orbitz deal was found by Cheapflights users on 2/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/138:26 amONT - PHX
1 stop4h 48mMultiple Airlines
Mon 3/175:00 amPHX - ONT
2 stops13h 19mMultiple Airlines
Deal found 2/18$252
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/176:00 amONT - PHX
2 stops13h 38mAlaska Airlines
Thu 3/207:00 amPHX - ONT
1 stop16h 59mAlaska Airlines
Deal found 2/19$278

Find flights from Ontario to Mesa within your budget

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 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Ontario

Fly to

Mesa

Route

Depart

Return

Price

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Wed 4/9

2:43 pm-11:08 pm

1 stop8h 25m

Phoenix Sky Harbor Intl

Sun 4/13

5:40 am-1:57 pm

1 stop8h 17m

$119

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 3/10

7:10 pm-8:25 pm

Nonstop1h 15m

Phoenix Sky Harbor Intl

Wed 3/12

3:45 pm-9:45 pm

1 stop6h 00m

$127

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Thu 3/6

7:35 pm-9:51 pm

Nonstop1h 16m

Phoenix Sky Harbor Intl

Fri 3/7

8:26 am-8:47 am

Nonstop1h 21m

$162

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Thu 3/13

8:26 am-1:14 pm

1 stop4h 48m

Phoenix Sky Harbor Intl

Mon 3/17

5:00 am-6:19 pm

2 stops13h 19m

$252

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 3/17

6:00 am-7:38 pm

2 stops13h 38m

Phoenix Sky Harbor Intl

Thu 3/20

7:00 am-11:59 pm

1 stop16h 59m

$278

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sat 4/12

6:47 pm-11:57 pm

1 stop5h 10m

$55

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Tue 4/8

6:15 am-7:33 am

Nonstop1h 18m

$59

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 3/17

7:50 pm-11:50 pm

1 stop4h 00m

$69

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Mon 3/17

6:00 am-10:59 pm

2 stops16h 59m

$162

OntarioPhoenix

ONT - PHX

ONTPHX

Ontario

Sun 3/23

5:40 am-10:35 pm

1 stop16h 55m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 11 results
1
2

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.
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.

Travel insights for flights from Ontario to Mesa

Get recent, data-driven insights about flights from Ontario to Mesa including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ontario to Mesa?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Mesa. Price data was last updated on February 14, 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Mesa. 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 Mesa?

Currently, January is the cheapest month in which you can book a flight from Ontario to Mesa (average of $258). Flying from Ontario to Mesa in March is currently the most expensive (average of $337). 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 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 February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Mesa as you normally would.

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 December 16, 2024.

Travelers seeking maximum savings on their Ontario to Mesa flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 February 20, 2025.

The most flights from ONT to MS9 are scheduled on a Thursday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Mesa by month

Plan your trip to Mesa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Mesa ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Mesa when rainfall is around 0.0 in.

Temperature in Mesa by month

Plan your trip to Mesa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Mesa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 February 20, 2025.
To help decide which airline to fly from Ontario to Mesa, see what other customers have to say about Southwest, Alaska Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Frontier
6.0
Okay
3,355 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Mesa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Mesa?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Mesa. You should not have trouble finding flights to Mesa from Ontario; the airport handles an average of 8 outbound flights to Mesa per day. You should also have plenty of airline options to choose from since 4 airlines have flights from the Ontario airport to Mesa. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • What are the cheapest airlines to fly from Ontario to Mesa one-way?

    $51 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Southwest, with prices starting from $59 and $69, respectively.

  • What are the most reliable airlines from Ontario to Mesa?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ontario to Mesa on time: British Airways (97%), Envoy Air (94%), SkyWest Airlines (92%).

  • What are the cheapest flights from Ontario to Mesa?

    While on average a flight from Ontario to Mesa is generally $620, our data shows the cheapest flight currently is $83. When looking at the most popular route, (Ontario - Phoenix Sky Harbor Intl), you can expect to pay $107 for that flight.

  • Can I find deals for flights from Ontario to Mesa that include hotel bookings?

    Yes. In addition to deals on Ontario to Mesa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Mesa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Mesa.

  • Can I find deals for business class flights from Ontario to Mesa?

    Yes. Cheapflights offers flight deals from Ontario to Mesa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Mesa?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Mesa (average of $258). Flying from Ontario to Mesa in March is currently the most expensive (average of $337). 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.

See more FAQs

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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 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$30Average$60FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$38Average$98FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$135Average$267FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$136Average$271FlexibilityNo cancel feeOn-time71%
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