What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Ontario round-trip?

Currently priced at $137, American Airlines will fly you from Phoenix Sky Harbor Intl Airport to Ontario and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and Frontier - these airlines can fly you to your destination from $147 and $180, respectively. American Airlines is priced at 26% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Ontario one-way?

For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $69. Users have also found prices from $79 and $90 on Southwest and Frontier, respectively.

What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Ontario?

On average you can expect to pay $208 for a flight from Phoenix Sky Harbor Intl Airport to Ontario. The cheapest flight overall is $48 while the most popular route, (Phoenix Sky Harbor Intl - Ontario) is currently priced at $137.

What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Ontario?

Before booking your flight to Ontario from Phoenix Sky Harbor Intl Airport, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (100%), Southwest (84%), British Airways( 83%).

What are the most popular airlines that fly from Phoenix Sky Harbor Intl Airport to Ontario?

American Airlines, Frontier and Southwest are the most popular airlines when flying from Phoenix Sky Harbor Intl Airport to Ontario.

What is the cheapest day to fly round-trip from Phoenix Sky Harbor Intl Airport to Ontario?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 130% on the overall cost on flights from Phoenix Sky Harbor Intl Airport to Ontario.

What is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Ontario?

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, August can be a great choice for travel to Ontario. Flights to Ontario from Phoenix Sky Harbor Intl Airport in August are about $123 on average during August, but can be found for as low as $38.

Most accurate provider : When it comes to deals on Phoenix Sky Harbor Intl Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Ontario flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Phoenix Sky Harbor Intl Airport-Ontario 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 Phoenix Sky Harbor Intl Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Ontario from Phoenix Sky Harbor Intl?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Phoenix Sky Harbor Intl to Ontario. 3 airlines have flights to Ontario from Phoenix Sky Harbor Intl on a regular basis. Booking flights from Phoenix Sky Harbor Intl to Ontario should not be difficult; the airport handles an average of 6 inbound flights from Phoenix Sky Harbor Intl per day.

Can I find deals for flights from Sky Harbor Intl to Ontario that include hotel bookings?

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

How can I find direct flights from Sky Harbor Intl to Ontario?

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

Can I find deals for business class flights from Sky Harbor Intl to Ontario?

Yes. Cheapflights offers flight deals from Sky Harbor Intl 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.

$69+ Flights from Phoenix Sky Harbor Intl Airport to Ontario

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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.

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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Ontario are usually found in June or July, booked 70 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap flight deals from Sky Harbor Intl to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$137 (American Airlines)
One-way from	$69 (American Airlines)
Popular in	December
Cheapest in	June
Average price	$184
Good round-trip deal	$147 or less
Good one-way deal	$119 or less

Provider with most accurate pricing for Phoenix Sky Harbor Intl-Ontario flight deals.

Search Deals

Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Ontario flights.

Search Deals

From Phoenix Sky Harbor Intl to Ontario

Search Deals

One-way flight from Phoenix Sky Harbor Intl to Ontario

Search Deals

Highest demand for flights based on searches. 28% potential increase in price ($75 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Ontario.

Search Deals

Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Ontario.

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Find flight deals from Sky Harbor Intl to Ontario

Cheapest flights from Sky Harbor Intl to Ontario
Explore the most affordable flight options available from Sky Harbor Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Thu 4/178:43 pmPHX - ONT

Nonstop1h 15mAmerican Airlines

Mon 4/217:25 pmONT - PHX

Nonstop1h 15mAmerican Airlines

Deal found 3/25

$137

Thu 4/179:40 amPHX - ONT

Nonstop1h 20mSouthwest

Mon 4/215:45 amONT - PHX

1 stop5h 45mSouthwest

Deal found 3/25

$147

Sat 4/265:40 amPHX - ONT

1 stop5h 40mFrontier

Sat 4/262:27 pmONT - PHX

1 stop8h 53mFrontier

Deal found 3/25

$175

Tue 4/15:09 pmPHX - ONT

1 stop6h 50mMultiple Airlines

Tue 4/87:00 amONT - PHX

2 stops14h 00mMultiple Airlines

Deal found 3/25

$334

Tue 4/227:00 amPHX - ONT

2 stops8h 32mAlaska Airlines

Tue 4/297:00 amONT - PHX

1 stop12h 58mAlaska Airlines

Deal found 3/25

$339

Mon 6/97:10 pmPHX - ONT

1 stop15h 56mDelta

Fri 6/135:45 pmONT - PHX

1 stop16h 30mDelta

Deal found 3/25

$543

Best flights from Sky Harbor Intl to Ontario
Discover carefully curated flight deals from Sky Harbor Intl to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 26, 2025.

Thu 4/178:43 pmPHX - ONT

Nonstop1h 15mAmerican Airlines

Mon 4/217:25 pmONT - PHX

Nonstop1h 15mAmerican Airlines

Deal found 3/25

$137

Thu 4/179:40 amPHX - ONT

Nonstop1h 20mSouthwest

Mon 4/215:45 amONT - PHX

1 stop5h 45mSouthwest

Deal found 3/25

$147

Wed 4/2310:29 pmPHX - ONT

1 stop8h 51mFrontier

Tue 4/2912:59 amONT - PHX

1 stop11h 08mFrontier

Deal found 3/25

$180

Tue 4/227:00 amPHX - ONT

2 stops8h 32mAlaska Airlines

Tue 4/297:00 amONT - PHX

1 stop12h 58mAlaska Airlines

Deal found 3/25

$339

Sun 4/610:00 pmPHX - ONT

1 stop9h 25mMultiple Airlines

Wed 4/96:55 amONT - PHX

2 stops9h 15mMultiple Airlines

Deal found 3/25

$343

Mon 6/97:10 pmPHX - ONT

1 stop15h 56mDelta

Fri 6/135:45 pmONT - PHX

1 stop16h 30mDelta

Deal found 3/25

$543

Fri 6/2011:20 pmPHX - ONT

2 stops18h 07mUnited Airlines

Fri 6/276:39 pmONT - PHX

2 stops14h 02mUnited Airlines

Deal found 3/25

$639

Last-minute flights from Sky Harbor Intl to Ontario
Discover last-minute flight deals from Sky Harbor Intl to Ontario. Data last updated March 26, 2025 and is based on user searches.

Sat 3/295:15 amPHX - ONT

2 stops12h 49mUnited Airlines

Mon 3/313:55 pmONT - PHX

2 stops20h 25mUnited Airlines

Deal found 3/25

$752

Tue 4/18:02 amPHX - ONT

1 stop9h 54mFrontier

Mon 4/712:59 amONT - PHX

1 stop11h 06mFrontier

Deal found 3/25

$180

Tue 4/15:09 pmPHX - ONT

1 stop6h 50mMultiple Airlines

Tue 4/87:00 amONT - PHX

2 stops14h 00mMultiple Airlines

Deal found 3/25

$334

Tue 4/18:00 amPHX - ONT

Nonstop1h 20mSouthwest

Tue 4/88:50 amONT - PHX

Nonstop1h 15mSouthwest

Deal found 3/25

$430

Thu 4/35:16 pmPHX - ONT

Nonstop1h 17mAmerican Airlines

Wed 4/166:15 amONT - PHX

Nonstop1h 18mAmerican Airlines

Deal found 3/25

$352

Thu 4/31:26 pmPHX - ONT

2 stops10h 33mAlaska Airlines

Wed 4/166:55 amONT - PHX

2 stops10h 56mAlaska Airlines

Deal found 3/25

$711

Sat 4/59:51 amPHX - ONT

2 stops10h 30mUnited Airlines

Sun 4/66:00 amONT - PHX

1 stop9h 43mUnited Airlines

Deal found 3/25

$764

Thu 4/178:43 pmPHX - ONT

Nonstop1h 15mAmerican Airlines

Mon 4/217:25 pmONT - PHX

Nonstop1h 15mAmerican Airlines

Deal found 3/25

$137

Thu 4/179:40 amPHX - ONT

Nonstop1h 20mSouthwest

Mon 4/215:45 amONT - PHX

1 stop5h 45mSouthwest

Deal found 3/25

$147

Tue 4/227:00 amPHX - ONT

2 stops8h 32mAlaska Airlines

Tue 4/297:00 amONT - PHX

1 stop12h 58mAlaska Airlines

Deal found 3/25

$339

Wed 4/235:40 amPHX - ONT

1 stop5h 40mFrontier

Wed 4/3012:10 pmONT - PHX

1 stop6h 30mFrontier

Deal found 3/25

$180

One-way flights from Sky Harbor Intl to Ontario
Search for one-way flight options from Sky Harbor Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated March 26, 2025.

Tue 4/155:12 pmPHX - ONT

Nonstop1h 15mAmerican Airlines

Deal found 3/26

$69

Tue 4/155:50 pmPHX - ONT

1 stop5h 10mSouthwest

Deal found 3/26

$79

Sat 4/511:57 amPHX - ONT

1 stop6h 00mFrontier

Deal found 3/25

$90

Wed 4/237:00 amPHX - ONT

2 stops8h 32mAlaska Airlines

Deal found 3/25

$187

Tue 5/276:30 pmPHX - ONT

2 stops17h 44mUnited Airlines

Deal found 3/25

$238

Tue 4/811:49 amPHX - ONT

1 stop6h 34mHawaiian Airlines

Deal found 3/25

$372

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 4/17

8:43 pm-9:58 pm

Nonstop1h 15m

Ontario

Mon 4/21

7:25 pm-8:40 pm

Nonstop1h 15m

$137

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Thu 4/17

9:40 am-11:00 am

Nonstop1h 20m

Ontario

Mon 4/21

5:45 am-11:30 am

1 stop5h 45m

$147

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 4/26

5:40 am-11:20 am

1 stop5h 40m

Ontario

Sat 4/26

2:27 pm-11:20 pm

1 stop8h 53m

$175

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 4/1

5:09 pm-11:59 pm

1 stop6h 50m

Ontario

Tue 4/8

7:00 am-9:00 pm

2 stops14h 00m

$334

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 4/22

7:00 am-3:32 pm

2 stops8h 32m

Ontario

Tue 4/29

7:00 am-7:58 pm

1 stop12h 58m

$339

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Mon 6/9

7:10 pm-11:06 am

1 stop15h 56m

Ontario

Fri 6/13

5:45 pm-10:15 am

1 stop16h 30m

$543

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Fri 6/20

11:20 pm-5:27 pm

2 stops18h 07m

Ontario

Fri 6/27

6:39 pm-8:41 am

2 stops14h 02m

$639

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 4/15

5:12 pm-6:27 pm

Nonstop1h 15m

$69

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Tue 4/15

5:50 pm-11:00 pm

1 stop5h 10m

$79

PhoenixOntario

PHX - ONT

PHXONT

Phoenix Sky Harbor Intl

Sat 4/5

11:57 am-5:57 pm

1 stop6h 00m

$90

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 13 results

Compare providers for flights from Sky Harbor Intl to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sky Harbor Intl to Ontario in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
CheapOair	Price Accuracy1 star	Trust Score*3 stars
Mytrip	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Ontario 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 Phoenix Sky Harbor Intl Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Phoenix Sky Harbor Intl Airport to Ontario flights

Cheapflights partnered with top experts to bring you the best recommendations for your Phoenix Sky Harbor Intl Airport to Ontario trip

Airlines

Frontier

Frontier offers extra comfort seats with 32” separation for a fee, enhancing short-haul comfort.

For early morning flights, Frontier has fewer delays, ensuring timely arrivals.

Read more about Frontierby Marisa Garcia

Southwest

Southwest offers free messaging and in-flight entertainment on personal devices, ideal for short flights.

Southwest allows two free checked bags, including oversized items, enhancing travel convenience.

Read more about Southwestby Marisa Garcia

Our travel experts

Marisa Garcia

Expert on Frontier and Southwest

Best time to book a flight from Sky Harbor Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Sky Harbor Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Ontario

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Ontario?

The best time to book flights from Phoenix Sky Harbor Intl Airport to Ontario is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Ontario?

Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Ontario (average of $246). Flying from Phoenix Sky Harbor Intl Airport to Ontario in March is currently the most expensive (average of $326). 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?

When flying from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to Ontario?

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to Ontario

The most flights from PHX to ONT are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Ontario 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

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

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Phoenix to Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines

8.0

Very good

9,789 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta

8.0

Very good

7,891 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines

7.9

Good

2,331 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,608 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

What airport do you fly into for flights to Ontario from Phoenix Sky Harbor Intl?
Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Phoenix Sky Harbor Intl to Ontario. 3 airlines have flights to Ontario from Phoenix Sky Harbor Intl on a regular basis. Booking flights from Phoenix Sky Harbor Intl to Ontario should not be difficult; the airport handles an average of 6 inbound flights from Phoenix Sky Harbor Intl per day.
What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Ontario round-trip?
Currently priced at $137, American Airlines will fly you from Phoenix Sky Harbor Intl Airport to Ontario and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and Frontier - these airlines can fly you to your destination from $147 and $180, respectively. American Airlines is priced at 26% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Ontario one-way?
For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $69. Users have also found prices from $79 and $90 on Southwest and Frontier, respectively.
What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Ontario?
Before booking your flight to Ontario from Phoenix Sky Harbor Intl Airport, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (100%), Southwest (84%), British Airways( 83%).
What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Ontario?
On average you can expect to pay $208 for a flight from Phoenix Sky Harbor Intl Airport to Ontario. The cheapest flight overall is $48 while the most popular route, (Phoenix Sky Harbor Intl - Ontario) is currently priced at $137.
Can I find deals for flights from Sky Harbor Intl to Ontario that include hotel bookings?
Yes. In addition to deals on Sky Harbor Intl to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sky Harbor Intl to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Ontario.
Can I find deals for business class flights from Sky Harbor Intl to Ontario?
Yes. Cheapflights offers flight deals from Sky Harbor Intl 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 Sky Harbor Intl Airport to Ontario?
Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Ontario (average of $246). Flying from Phoenix Sky Harbor Intl Airport to Ontario in March is currently the most expensive (average of $326). 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 3 airlines flying from Sky Harbor Intl to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$40	Average$100	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$110	Average$275	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$130	Average$264	FlexibilityNo cancel fee	On-time63%

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$69+ Cheap flights from Sky Harbor Intl (PHX) 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sky Harbor Intl to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Ontario are usually found in June or July, booked 70 days in advance, depart on a Wednesday or Saturday and return on a Friday

Cheap flight deals from Sky Harbor Intl to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Sky Harbor Intl to Ontario

Cheapest flights from Sky Harbor Intl to OntarioExplore the most affordable flight options available from Sky Harbor Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Explore the most affordable flight options available from Sky Harbor Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Ontario that are best for you.

Compare providers for flights from Sky Harbor Intl to Ontario

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 Sky Harbor Intl to Ontario in March.

The best insider tips for Phoenix Sky Harbor Intl Airport to Ontario flights

Cheapflights partnered with top experts to bring you the best recommendations for your Phoenix Sky Harbor Intl Airport to Ontario trip

Airlines

Frontier

Southwest

Our travel experts

Best time to book a flight from Sky Harbor Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Sky Harbor Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Ontario

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Ontario. Price data was last updated on March 21, 2025.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Ontario?

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

Find hourly flight availability from Sky Harbor Intl 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 March 26, 2025.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Ontario. Price data was last updated on March 23, 2025.

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Ontario

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Phoenix to Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl 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 Sky Harbor Intl?

What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Ontario round-trip?

What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Ontario one-way?

What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Ontario?

What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Ontario?

Can I find deals for flights from Sky Harbor Intl to Ontario that include hotel bookings?

How can I find direct flights from Sky Harbor Intl to Ontario?

Can I find deals for business class flights from Sky Harbor Intl to Ontario?

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Ontario?

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Alternative routes for Sky Harbor Intl to Ontario

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Top 3 airlines flying from Sky Harbor Intl to Ontario

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Cheapest flights from Sky Harbor Intl to Ontario
Explore the most affordable flight options available from Sky Harbor Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.