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$126+ Cheap flights from Miami to Ontario (MIA - 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.
MIA — ONT
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheap flight deals from Miami to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Miami (MIA) 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(JetBlue)

One-way from

$126
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$466
Provider with most accurate pricing for Miami-Ontario flight deals.
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Provider most trusted by Cheapflights users for Miami-Ontario flights.
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From Miami to Ontario
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One-way flight from Miami to Ontario
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Highest demand for flights based on searches. 20% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Miami to Ontario

Cheapest flights from Miami to Ontario
Explore the most affordable flight options available from Miami to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This Trip.com deal was found by Cheapflights users on 3/24. 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.
Wed 4/236:00 amMIA - ONT
1 stop20h 59mFrontier
Tue 4/2912:59 amONT - MIA
1 stop25h 22mFrontier
Deal found 3/24$252
This JetBlue deal was found by Cheapflights users on 3/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/82:01 pmMIA - ONT
1 stop10h 10mJetBlue
Mon 5/1210:59 pmONT - MIA
1 stop11h 07mJetBlue
Deal found 3/24$271
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/222:57 pmMIA - ONT
2 stops11h 44mDelta
Tue 4/295:15 pmONT - MIA
1 stop9h 35mDelta
Deal found 3/24$362
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/95:00 pmMIA - ONT
1 stop8h 00mUnited Airlines
Mon 5/126:48 pmONT - MIA
2 stops14h 00mUnited Airlines
Deal found 3/24$387
This American Airlines deal was found by Cheapflights users on 3/24. 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 5/89:05 amMIA - ONT
1 stop7h 47mAmerican Airlines
Thu 5/1510:00 amONT - MIA
1 stop6h 57mAmerican Airlines
Deal found 3/24$406
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 4/187:59 pmMIA - ONT
2 stops17h 40mAlaska Airlines
Tue 4/226:00 amONT - MIA
1 stop32h 01mAlaska Airlines
Deal found 3/24$469
This Southwest deal was found by Cheapflights users on 3/24. 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 5/164:50 pmMIA - ONT
2 stops9h 10mSouthwest
Sun 5/186:15 amONT - MIA
1 stop9h 40mSouthwest
Deal found 3/24$477
This Expedia deal was found by Cheapflights users on 3/24. 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.
Thu 4/311:26 amMIA - ONT
2 stops15h 33mMultiple Airlines
Mon 4/79:31 amONT - MIA
1 stop12h 49mMultiple Airlines
Deal found 3/24$578

Cheapflights Fare Finder

Customize your flight search to find flights from Miami 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 March 25, 2025.
Use the filters below to find and compare flights from Miami to Ontario that are best for you.

Fly from

Miami

Fly to

Ontario

Route

Depart

Return

Price

MiamiOntario

MIA - ONT

MIAONT

Miami

Wed 4/23

6:00 am-11:59 pm

1 stop20h 59m

Ontario

Wed 4/30

12:10 pm-5:21 am

1 stop14h 11m

$252

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 5/8

2:01 pm-9:11 pm

1 stop10h 10m

Ontario

Mon 5/12

10:59 pm-1:06 pm

1 stop11h 07m

$271

MiamiOntario

MIA - ONT

MIAONT

Miami

Tue 4/22

2:57 pm-11:41 pm

2 stops11h 44m

Ontario

Tue 4/29

5:15 pm-5:50 am

1 stop9h 35m

$362

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 5/9

5:00 pm-10:00 pm

1 stop8h 00m

Ontario

Mon 5/12

6:48 pm-11:48 am

2 stops14h 00m

$387

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 5/8

9:05 am-1:52 pm

1 stop7h 47m

Ontario

Thu 5/15

10:00 am-7:57 pm

1 stop6h 57m

$406

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 4/18

7:59 pm-10:39 am

2 stops17h 40m

Ontario

Tue 4/22

6:00 am-5:01 pm

1 stop32h 01m

$469

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 5/16

4:50 pm-11:00 pm

2 stops9h 10m

Ontario

Sun 5/18

6:15 am-6:55 pm

1 stop9h 40m

$477

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 4/3

11:26 am-11:59 pm

2 stops15h 33m

Ontario

Mon 4/7

9:31 am-1:20 am

1 stop12h 49m

$578

MiamiOntario

MIA - ONT

MIAONT

Miami

Tue 4/15

6:25 am-2:27 pm

1 stop11h 02m

$126

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 5/8

2:01 pm-9:11 pm

1 stop10h 10m

$146

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 15 results
1
2

Compare providers for flights from Miami 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 Miami to Ontario in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 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 Miami-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Miami-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Miami-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Miami-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 Miami-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Miami to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Miami to Ontario (average of $246). Flying from Miami to Ontario in March is currently the most expensive (average of $324). 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 MIA to ONT?

Find hourly flight availability from Miami 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 25, 2025.

It’s typically best to fly out from Miami to Ontario in the afternoon. Doing so could potentially save you 33% on the flight price compared to flying at noon, which is usually more expensive.

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

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

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

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 March 25, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Miami to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,330 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

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

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

    Currently priced at $271, JetBlue will fly you from Miami to Ontario and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Delta - these airlines can fly you to your destination from $297 and $357, respectively. Users have found that JetBlue is 24% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from JetBlue and Delta, as they are both options that can get you from Miami to Ontario for a low price.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Miami to Ontario (average of $246). Flying from Miami to Ontario in March is currently the most expensive (average of $324). 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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Alternative routes for Miami to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Miami to Ontario

Discover the top 4 airlines that operate flights from Miami 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$162Average$258FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$216Average$332FlexibilityNo cancel feeOn-time71%
DeltaCheapest$253Average$357FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$283Average$428FlexibilityNo cancel feeOn-time69%
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