Which airline has the best punctuality record on Miami to Ontario flights?

According to our data, Atlas Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

What is the most punctual flight time for Miami to Ontario flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What airlines fly to Ontario?

JetBlue, American Airlines and Delta are the top three most popular airlines that fly to Ontario from Miami according to our data. JetBlue is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Miami to Ontario?

Frontier, Delta, and American Airlines are the most popular carriers operating from Miami to Ontario

How often are flights from Miami to Ontario delayed?

Historically, on average around 0% of flights between Miami and Ontario have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

When did momondo last update prices for flights from Miami Airport to Ontario Airport?

Prices for flights from Miami Airport to Ontario Airport refresh daily.

How many operators does momondo search for flights from Miami Airport to Ontario Airport?

The number of operators available for flights from Miami Airport to Ontario Airport is 4 as of November 2025.

How old do you have to be to fly from Miami Airport to Ontario Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Miami Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$62 Cheap Flights from Miami to Ontario in 2025/26

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6:00 am - 9:23 pmMIA-ONT

18h 23m1 stop

8:31 am - 1:13 amONT-MIA

13h 42m1 stop

$134Frontier

Find Deal

Fri, Jan 9 - Mon, Jan 12

6:00 am - 9:23 pmMIA-ONT

18h 23m1 stop

8:31 am - 1:13 amONT-MIA

13h 42m1 stop

$138Frontier

Find Deal

Fri, Jan 9 - Sun, Jan 11

1:07 pm - 11:56 pmMIA-ONT

13h 49m1 stop

8:31 am - 1:13 amONT-MIA

13h 42m1 stop

$142Frontier

Find Deal

Thu, Jan 8 - Sun, Jan 11

1:07 pm - 11:56 pmMIA-ONT

13h 49m1 stop

7:15 am - 5:48 amONT-MIA

19h 33m1 stop

$146Frontier

Find Deal

Thu, Jan 8 - Tue, Jan 13

7:45 am - 2:23 pmMIA-ONT

9h 38m1 stop

6:20 am - 4:37 pmONT-MIA

7h 17m1 stop

$180Frontier

Find Deal

Sun, Jan 18 - Thu, Jan 22

6:00 am - 7:36 amMIA-ONT

28h 36m2 stops

8:31 am - 1:13 amONT-MIA

13h 42m1 stop

$182Frontier

Find Deal

Thu, Jan 8 - Mon, Jan 12

6:18 pm - 3:07 pmMIA-ONT

23h 49m1 stop

7:15 am - 5:12 pmONT-MIA

6h 57m1 stop

$184Frontier

Find Deal

Tue, Jan 20 - Tue, Jan 27

9:38 am - 11:31 pmMIA-ONT

40h 53m2 stops

2:05 pm - 8:54 pmONT-MIA

27h 49m1 stop

$189Multiple Airlines

Find Deal

Sat, Dec 6 - Fri, Dec 12

5:30 am - 5:30 pmMIA-ONT

39h 00m2 stops

6:00 pm - 5:35 amONT-MIA

8h 35m1 stop

$190Frontier

Find Deal

Thu, Dec 25 - Wed, Dec 31

6:00 am - 2:25 pmMIA-ONT

11h 25m1 stop

3:20 pm - 5:19 amONT-MIA

10h 59m1 stop

$206Frontier

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Sat, Dec 6 - Sat, Dec 13

American Airlines flights from Miami to Ontario

Our best American Airlines deals on Miami to Ontario flight tickets

American Airlines

Nov 27

MIA7:09 amMiami

11h 15m

2 stops

ONT3:24 pmOntario

Dec 1

ONT12:49 pmOntario

8h 31m

1 stop

MIA12:20 amMiami

$333

Find similar

American Airlines

Nov 27

MIA7:24 amMiami

7h 39m

1 stop

ONT12:03 pmOntario

Nov 30

ONT8:46 pmOntario

6h 19m

1 stop

MIA6:05 amMiami

$453

Find similar

American Airlines

Nov 18

MIA7:09 amMiami

7h 45m

1 stop

ONT11:54 amOntario

Nov 24

ONT10:47 amOntario

7h 12m

1 stop

MIA8:59 pmMiami

$454

Find similar

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets

Frontier

Jan 9

MIA6:00 amMiami

18h 23m

1 stop

ONT9:23 pmOntario

Jan 12

ONT8:31 amOntario

13h 42m

1 stop

MIA1:13 amMiami

$134

Find similar

Frontier

Jan 9

MIA6:00 amMiami

18h 23m

1 stop

ONT9:23 pmOntario

Jan 11

ONT8:31 amOntario

13h 42m

1 stop

MIA1:13 amMiami

$138

Find similar

Frontier

Jan 8

MIA1:07 pmMiami

13h 49m

1 stop

ONT11:56 pmOntario

Jan 11

ONT8:31 amOntario

13h 42m

1 stop

MIA1:13 amMiami

$142

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 1/9

6:00 am-9:23 pm

1 stop18h 23m

Ontario

Mon 1/12

8:31 am-1:13 am

1 stop13h 42m

$134

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 1/9

6:00 am-9:23 pm

1 stop18h 23m

Ontario

Sun 1/11

8:31 am-1:13 am

1 stop13h 42m

$138

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 1/8

1:07 pm-11:56 pm

1 stop13h 49m

Ontario

Sun 1/11

8:31 am-1:13 am

1 stop13h 42m

$142

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 1/8

1:07 pm-11:56 pm

1 stop13h 49m

Ontario

Tue 1/13

7:15 am-5:48 am

1 stop19h 33m

$146

MiamiOntario

MIA - ONT

MIAONT

Miami

Sun 1/18

7:45 am-2:23 pm

1 stop9h 38m

Ontario

Thu 1/22

6:20 am-4:37 pm

1 stop7h 17m

$180

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 1/8

6:00 am-7:36 am

2 stops28h 36m

Ontario

Mon 1/12

8:31 am-1:13 am

1 stop13h 42m

$182

MiamiOntario

MIA - ONT

MIAONT

Miami

Tue 1/20

6:18 pm-3:07 pm

1 stop23h 49m

Ontario

Tue 1/27

7:15 am-5:12 pm

1 stop6h 57m

$184

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 12/6

9:38 am-11:31 pm

2 stops40h 53m

Ontario

Fri 12/12

2:05 pm-8:54 pm

1 stop27h 49m

$189

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 12/25

5:30 am-5:30 pm

2 stops39h 00m

Ontario

Wed 12/31

6:00 pm-5:35 am

1 stop8h 35m

$190

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 12/6

6:00 am-2:25 pm

1 stop11h 25m

Ontario

Sat 12/13

3:20 pm-5:19 am

1 stop10h 59m

$206

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How to get the cheapest flight ticket from Miami to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from Miami to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $333. If you aren’t able to travel during the month of January, then book flights to Ontario from Miami during August instead. Flights to Ontario in August, while not as cheap as those in January, still average around $336.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $286. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Miami to Ontario for around $499.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Miami to Ontario when you can find flight prices for as low as $294. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $437 on average. Flights to Ontario from Miami at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Miami to Ontario flight prices changed over time?

As of November 2025, prices for Miami to Ontario flights are approximately 13% more expensive when compared to flights at the same time last year.

When to book flights from Miami to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Miami to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Miami to Ontario (MIA to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Miami to Ontario

Direct flights	None

There are no direct flights from Miami to Ontario. There are no popular flight routes from Miami to Ontario.

Search flight deals

How far is Miami to Ontario by plane?
A flight from Miami to Ontario will travel around 2299.8 mi. 8h 06m is a normal flight duration for this route.
When did momondo last update prices for flights from Miami Airport to Ontario Airport?
Prices for flights from Miami Airport to Ontario Airport refresh daily.
How many operators does momondo search for flights from Miami Airport to Ontario Airport?
The number of operators available for flights from Miami Airport to Ontario Airport is 4 as of November 2025.
How old do you have to be to fly from Miami Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Miami Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Miami to Ontario?
momondo data reveals that the most frequently booked airline on the route from Miami to Ontario is American Airlines, representing 72% of all bookings. The subsequent popular airlines are Frontier at 12%, United Airlines at 9%, and Delta at 8%.

Best airlines flying from Miami to Ontario

Compare and see reviews for airlines that fly from Miami to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $170	Free Cancellation	Rating 5.8 3,103 reviews	Search Frontier flights
Delta	PriceFrom $253	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
American Airlines	PriceFrom $305	Free Cancellation	Rating 7.2 11,048 reviews	Search American Airlines flights
United Airlines	PriceFrom $336	Free Cancellation	Rating 7.4 9,014 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Miami to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Miami.

Can I find flights from Miami to Ontario with flexible booking policies on momondo?

Flights from Miami to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Miami to Ontario?

Once all potential Miami to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Miami to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Miami. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Flights to New Yorkfrom $44

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Flights to Miamifrom $38

Flights to Chicagofrom $50

Flights to Orlandofrom $38

Flights to Las Vegasfrom $45

Flights to San Franciscofrom $54

Flights to Washington, D.C.from $38

Flights to Bostonfrom $53

Flights to Atlantafrom $38

Flights to Dallasfrom $48

Flights to Seattlefrom $58

Cheap flights from Miami to Los Angeles from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Miami to Los Angeles departing on 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Miami to Ontario

Our best American Airlines deals on Miami to Ontario flight tickets

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets

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How to get the cheapest flight ticket from Miami to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ontario?

What is the cheapest day to depart on your flight to Ontario?

What is the cheapest time of day to depart on your flight to Ontario?

How have Miami to Ontario flight prices changed over time?

As of November 2025, prices for Miami to Ontario flights are approximately 13% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Miami to Ontario?

Frontier, Delta, and American Airlines are the most popular carriers operating from Miami to Ontario

What airlines fly to Ontario?

How often are flights from Miami to Ontario delayed?

Historically, on average around 0% of flights between Miami and Ontario have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

What is the most punctual flight time for Miami to Ontario flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Miami to Ontario flights?

According to our data, Atlas Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

When to book flights from Miami to Ontario

Cheap Miami to Ontario (MIA to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Miami to Ontario

Direct flights

How far is Miami to Ontario by plane?

When did momondo last update prices for flights from Miami Airport to Ontario Airport?

How many operators does momondo search for flights from Miami Airport to Ontario Airport?

How old do you have to be to fly from Miami Airport to Ontario Airport?

What documentation or ID do you need to fly to Ontario Airport?

What is the most popular airline from Miami to Ontario?

Best airlines flying from Miami to Ontario

Compare and see reviews for airlines that fly from Miami to Ontario with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Miami to Ontario?

Can I find flights from Miami to Ontario with flexible booking policies on momondo?

How can momondo help me find flights from Miami to Ontario?

I’m not ready to book a flight from Miami to Ontario right now. Can momondo alert me if prices change?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California