HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$88+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ONT
abr. 20 — abr. 271
dom. 4/20
dom. 4/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Miami 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.

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 abril 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$180
(CheapOair)

One-way from

$88
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$349
Provider with most accurate pricing for Miami-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Ontario flights.
Search Deals
From Miami to Ontario
Search Deals
One-way flight from Miami to Ontario
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 abril 15, 2025.

This Frontier deal was found by Cheapflights users on 4/13. 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.
mar. 4/226:00 amMIA - ONT
1 stop8h 20mFrontier
sáb. 4/2612:10 pmONT - MIA
1 stop14h 11mFrontier
Deal found 4/13$178
This JetBlue deal was found by Cheapflights users on 4/14. 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.
vie. 5/301:00 pmMIA - ONT
1 stop11h 11mJetBlue
lun. 6/210:59 pmONT - MIA
1 stop11h 16mJetBlue
Deal found 4/14$291
This Delta deal was found by Cheapflights users on 4/14. 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.
mar. 8/196:00 amMIA - ONT
1 stop8h 07mDelta
lun. 9/85:05 pmONT - MIA
1 stop10h 02mDelta
Deal found 4/14$299
This Southwest deal was found by Cheapflights users on 4/14. 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. 5/88:15 amMIA - ONT
1 stop10h 55mSouthwest
dom. 5/119:30 pmONT - MIA
2 stops13h 30mSouthwest
Deal found 4/14$359
This United Airlines deal was found by Cheapflights users on 4/13. 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.
mar. 6/104:50 pmMIA - ONT
1 stop7h 20mUnited Airlines
jue. 6/121:33 pmONT - MIA
1 stop7h 17mUnited Airlines
Deal found 4/13$394
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
vie. 5/96:01 pmMIA - ONT
1 stop19h 50mAlaska Airlines
lun. 5/126:24 pmONT - MIA
2 stops14h 59mAlaska Airlines
Deal found 4/14$541

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 abril 15, 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

sáb. 4/26

6:00 am-11:59 pm

1 stop20h 59m

Ontario

vie. 5/2

12:59 am-5:22 am

1 stop25h 23m

$180

MiamiOntario

MIA - ONT

MIAONT

Miami

vie. 5/30

1:00 pm-9:11 pm

1 stop11h 11m

Ontario

lun. 6/2

10:59 pm-1:15 pm

1 stop11h 16m

$291

MiamiOntario

MIA - ONT

MIAONT

Miami

mar. 8/19

6:00 am-11:07 am

1 stop8h 07m

Ontario

lun. 9/8

5:05 pm-6:07 am

1 stop10h 02m

$299

MiamiOntario

MIA - ONT

MIAONT

Miami

jue. 5/8

8:15 am-4:10 pm

1 stop10h 55m

Ontario

dom. 5/11

9:30 pm-2:00 pm

2 stops13h 30m

$359

MiamiOntario

MIA - ONT

MIAONT

Miami

mar. 6/10

4:50 pm-9:10 pm

1 stop7h 20m

Ontario

jue. 6/12

1:33 pm-11:50 pm

1 stop7h 17m

$394

MiamiOntario

MIA - ONT

MIAONT

Miami

vie. 5/9

6:01 pm-10:51 am

1 stop19h 50m

Ontario

lun. 5/12

6:24 pm-12:23 pm

2 stops14h 59m

$541

MiamiOntario

MIA - ONT

MIAONT

Miami

mar. 4/29

6:00 am-11:20 am

1 stop8h 20m

$88

MiamiOntario

MIA - ONT

MIAONT

Miami

dom. 6/1

8:55 pm-8:51 pm

1 stop26h 56m

$132

MiamiOntario

MIA - ONT

MIAONT

Miami

mié. 5/28

5:20 pm-9:57 pm

1 stop7h 37m

$150

MiamiOntario

MIA - ONT

MIAONT

Miami

jue. 5/15

2:48 pm-11:42 pm

2 stops11h 54m

$155

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 14 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 eDreams the most. eDreams 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 $328). 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 abril 15, 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 abril 15, 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
9,871 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,279 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,656 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
JetBlue
7.3
Good
2,926 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 $180, Frontier will fly you from Miami to Ontario and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from JetBlue and Delta - these airlines can fly you to your destination from $291 and $299, respectively. Users have found that Frontier is 50% 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 $88. However, be on the lookout for offers from American Airlines 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 $328). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Miami to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Miami to Los Angeles flights
Fort Lauderdale to Las Vegas flights
Orlando to Las Vegas flights
Orlando to Los Angeles flights
Tampa to Las Vegas flights
Fort Lauderdale to Los Angeles flights
Miami to Las Vegas flights
Tampa to Los Angeles flights
Orlando to San Francisco flights
Tampa to San Francisco flights
Miami to San Francisco flights
Orlando to San Diego flights
Fort Lauderdale to San Francisco flights
Tampa to San Diego flights
West Palm Beach to Las Vegas flights
Fort Lauderdale to Burbank flights
Orlando to Ontario flights
Fort Lauderdale to Santa Ana flights
Jacksonville to Las Vegas flights
Fort Lauderdale to San Diego flights
Orlando to Santa Ana flights
Orlando to Burbank flights
Fort Myers to Las Vegas flights
Miami to San Diego flights
West Palm Beach to Los Angeles flights
Miami to Santa Ana flights
Pensacola to Las Vegas flights
Jacksonville to Los Angeles flights
Fort Lauderdale to Ontario flights
Orlando to Sacramento flights
Tampa to Santa Ana flights
Tampa to Oakland flights
Tampa to Ontario flights
Sarasota to Las Vegas flights
West Palm Beach to San Francisco flights
Fort Lauderdale to Oakland flights
Jacksonville to San Francisco flights
Fort Myers to Los Angeles flights
Orlando to San Jose flights
Tampa to Burbank flights
Key West to Las Vegas flights
Orlando to Reno flights
West Palm Beach to San Diego flights
Miami to Burbank flights
Miami to San Jose flights
Fort Lauderdale to San Jose flights
Orlando to Oakland flights
Orlando Sanford Intl to Las Vegas flights
West Palm Beach to Ontario flights

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 abril 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$162Average$258FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$216Average$333FlexibilityNo cancel feeOn-time71%
DeltaCheapest$253Average$357FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$256Average$436FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.