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$53+ Cheap flights from Phoenix to Ontario (ONT)

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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ONT
ene. 27 — feb. 31
lun. 1/27
lun. 2/3
1 adult, Economy
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The best prices from Phoenix to Ontario are usually found in June or July, booked 70 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from Phoenix to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Phoenix (PH1) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 22, 2025.

Round-trip from

$105
(Mytrip)

One-way from

$53
(Mytrip)

Popular in

December

Cheapest in

June

Average price

$245
From Phoenix to Ontario
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One-way flight from Phoenix to Ontario
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Highest demand for flights based on searches. 35% potential increase in price ($92 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Phoenix to Ontario

Cheapest flights from Phoenix to Ontario
Explore the most affordable flight options available from Phoenix to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 22, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. 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.
jue. 2/69:22 amPHX - ONT
1 stop9h 33mFrontier
lun. 2/101:46 pmONT - PHX
1 stop7h 54mFrontier
Deal found 1/21$105
This American Airlines deal was found by Cheapflights users on 1/21. 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.
mar. 2/118:40 amPHX - ONT
Nonstop1h 29mAmerican Airlines
jue. 2/277:30 pmONT - PHX
Nonstop1h 16mAmerican Airlines
Deal found 1/21$137
This Southwest deal was found by Cheapflights users on 1/21. 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.
jue. 2/206:40 amPHX - ONT
1 stop5h 20mSouthwest
jue. 2/279:45 pmONT - PHX
Nonstop1h 20mSouthwest
Deal found 1/21$147
This Travelocity deal was found by Cheapflights users on 1/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/276:02 pmPHX - ONT
1 stop7h 07mMultiple Airlines
dom. 3/27:00 amONT - PHX
2 stops9h 03mMultiple Airlines
Deal found 1/20$221
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
sáb. 2/1511:51 amPHX - ONT
1 stop13h 07mAlaska Airlines
mar. 2/186:00 amONT - PHX
1 stop16h 59mAlaska Airlines
Deal found 1/21$303

Find flights from Phoenix to Ontario within your budget

Customize your flight search to find flights from Phoenix 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 2,558,603 searches. Data last updated enero 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

jue. 2/6

9:22 am-5:55 pm

1 stop9h 33m

Ontario

lun. 2/10

1:46 pm-10:40 pm

1 stop7h 54m

$105

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

jue. 2/20

11:36 am-12:07 pm

Nonstop1h 31m

Ontario

jue. 2/27

10:05 am-12:17 pm

Nonstop1h 12m

$137

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

lun. 2/17

8:40 am-9:00 am

Nonstop1h 20m

Ontario

sáb. 2/22

3:00 pm-7:05 pm

1 stop3h 05m

$162

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

jue. 2/27

6:02 pm-12:09 am

1 stop7h 07m

Ontario

dom. 3/2

7:00 am-5:03 pm

2 stops9h 03m

$221

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

sáb. 2/15

11:51 am-11:58 pm

1 stop13h 07m

Ontario

mar. 2/18

6:00 am-11:59 pm

1 stop16h 59m

$328

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

sáb. 2/15

7:05 am-6:31 pm

2 stops12h 26m

Ontario

sáb. 2/22

5:05 am-9:06 pm

1 stop15h 01m

$449

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

sáb. 2/22

10:15 pm-9:31 am

1 stop12h 16m

$60

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

mié. 3/12

5:16 pm-6:33 pm

Nonstop1h 17m

$69

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

mié. 2/19

12:30 pm-3:05 pm

1 stop3h 35m

$79

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

sáb. 3/22

6:00 am-10:22 pm

1 stop16h 22m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 12 results
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Best time to book a flight from Phoenix to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Phoenix 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 Phoenix to Ontario

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

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

Use this chart to determine the optimal time to book a round-trip flight from Phoenix to Ontario. Price data was last updated on January 17, 2025.

The price you pay for your flight from Phoenix to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Phoenix to Ontario (average of $246). Flying from Phoenix to Ontario in March is currently the most expensive (average of $310). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHX to ONT?

Find hourly flight availability from Phoenix 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 enero 22, 2025.

When flying from Phoenix to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 50% versus a flight in the afternoon.

What is the cheapest day to fly from Phoenix to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Phoenix to Ontario. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Phoenix to Ontario

Explore weekly flight availability from Phoenix to Ontario. 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 enero 22, 2025.

The most flights from PH1 to ONT are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 enero 22, 2025.
Read reviews from past customers who have flown Frontier, American Airlines and Southwest from Phoenix to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Food

7.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,654 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Food

7.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,707 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Food

7.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,514 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Food

7.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,975 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Food

7.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,654 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Food

7.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from Phoenix to Ontario. 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 into for flights to Ontario from Phoenix?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Phoenix to Ontario. 3 airlines have flights to Ontario from Phoenix on a regular basis. Booking flights from Phoenix to Ontario should not be difficult; the airport handles an average of 7 inbound flights from Phoenix per day.

  • What are the cheapest airlines flying from Phoenix to Ontario round-trip?

    Frontier, at $105, was found to be the cheapest airline from Phoenix to Ontario.Alternate airlines to your destination round-trip include American Airlines and Southwest. Frontier is 37% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $53. Users have also found prices from $69 and $79 on American Airlines and Southwest, respectively.

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

    The top 3 most reliable airlines when flying from Phoenix to Ontario are SkyWest Airlines (100%), Envoy Air (96%) and American Airlines (89%).

  • What are the cheapest flights from Phoenix to Ontario?

    While on average a flight from Phoenix to Ontario is generally $212, our data shows the cheapest flight currently is $70. When looking at the most popular route, (Phoenix Sky Harbor Intl - Ontario), you can expect to pay $107 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phoenix to Ontario 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 Phoenix to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Phoenix to Ontario (average of $246). Flying from Phoenix to Ontario in March is currently the most expensive (average of $310). 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.

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Top 3 airlines flying from Phoenix to Ontario

Discover the top 3 airlines that operate flights from Phoenix 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 2,558,603 searches. Data last updated enero 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$90FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$115Average$270FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$138Average$273FlexibilityNo cancel feeOn-time63%
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