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

Delta and Alaska Airlines are the most popular carriers operating from Miami to Ontario

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 48% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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 2026.

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.

$81 Cheap Flights from Miami to Ontario in 2026/27

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Find the cheapest flights from Miami to Los Angeles

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One-way

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10:49 am - 12:17 amMIA Miami-ONT Ontario

16h 28m2 stops Dallas/Fort Worth Denver Intl

11:30 am - 9:59 amONT Ontario-MIA Miami

19h 29m2 stops Denver Intl Dallas/Fort Worth

$188Frontier

Thu, Dec 3 - Sat, Dec 5

10:49 am - 10:20 pmMIA Miami-ONT Ontario

14h 31m2 stops Dallas/Fort Worth Denver Intl

11:30 am - 9:59 amONT Ontario-MIA Miami

19h 29m2 stops Denver Intl Dallas/Fort Worth

$202Frontier

Wed, Dec 2 - Wed, Dec 9

4:51 pm - 11:54 pmMIA Miami-ONT Ontario

10h 03m1 stop Portland

6:00 am - 9:14 pmONT Ontario-MIA Miami

12h 14m1 stop Denver Intl

$394Multiple Airlines

Thu, Dec 3 - Sat, Dec 5

4:51 pm - 11:54 pmMIA Miami-ONT Ontario

10h 03m1 stop Portland

6:00 am - 9:14 pmONT Ontario-MIA Miami

12h 14m1 stop Denver Intl

$398Multiple Airlines

Thu, Dec 3 - Sat, Dec 5

6:34 pm - 11:58 pmMIA Miami-ONT Ontario

8h 24m1 stop Salt Lake City

6:00 am - 5:23 pmONT Ontario-MIA Miami

8h 23m1 stop Salt Lake City

$432Delta

Wed, Jan 6 - Tue, Feb 16

6:34 pm - 11:58 pmMIA Miami-ONT Ontario

8h 24m1 stop Salt Lake City

6:00 am - 5:23 pmONT Ontario-MIA Miami

8h 23m1 stop Salt Lake City

$432Delta

Wed, Jan 6 - Wed, Feb 17

3:40 pm - 11:20 pmMIA Miami-ONT Ontario

10h 40m1 stop Charlotte Douglas

7:33 pm - 5:58 amONT Ontario-MIA Miami

7h 25m1 stop Phoenix Sky Harbor Intl

$465American Airlines

Wed, Nov 25 - Sun, Nov 29

4:55 pm - 10:15 pmMIA Miami-ONT Ontario

8h 20m1 stop Denver Intl

6:10 am - 9:55 pmONT Ontario-MIA Miami

12h 45m2 stops Denver Intl Nashville Intl

$502Southwest

Thu, Apr 15 - Mon, Apr 19

6:15 am - 1:50 pmMIA Miami-ONT Ontario

10h 35m2 stops Orlando Denver Intl

6:10 am - 9:55 pmONT Ontario-MIA Miami

12h 45m2 stops Denver Intl Nashville Intl

$507Southwest

Thu, Apr 15 - Mon, Apr 19

5:10 am - 5:13 pmMIA Miami-ONT Ontario

15h 03m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

2:09 pm - 11:59 pmONT Ontario-MIA Miami

6h 50m1 stop Dallas/Fort Worth

$568American Airlines

Thu, Nov 26 - Fri, Nov 27

Cheap last minute flights

Enter your travel dates to find the best prices.

5:50 am - 11:51 pmMIA Miami-ONT Ontario

21h 01m1 stop Denver Intl

11:52 am - 12:44 amONT Ontario-MIA Miami

9h 52m1 stop Denver Intl

$361Frontier

Sat, Nov 7 - Sat, Nov 14

5:50 am - 10:35 amMIA Miami-ONT Ontario

7h 45m1 stop Denver Intl

11:52 am - 12:44 amONT Ontario-MIA Miami

9h 52m1 stop Denver Intl

$366Frontier

Sun, Nov 8 - Sat, Nov 14

5:50 am - 10:35 amMIA Miami-ONT Ontario

7h 45m1 stop Denver Intl

6:30 am - 12:44 amONT Ontario-MIA Miami

15h 14m1 stop Denver Intl

$374Frontier

Wed, Nov 4 - Tue, Nov 17

10:00 am - 4:20 pmMIA Miami-ONT Ontario

9h 20m2 stops Nashville Intl Phoenix Sky Harbor Intl

5:45 am - 9:00 pmONT Ontario-MIA Miami

12h 15m2 stops Las Vegas Harry Reid Intl Orlando

$553Southwest

Sat, Nov 7 - Sat, Nov 14

2:15 pm - 7:30 pmMIA Miami-ONT Ontario

8h 15m1 stop Atlanta Hartsfield-Jackson

7:05 am - 5:20 pmONT Ontario-MIA Miami

7h 15m1 stop Atlanta Hartsfield-Jackson

$607Delta

Wed, Nov 4 - Tue, Nov 10

9:10 am - 3:10 pmMIA Miami-ONT Ontario

9h 00m1 stop Nashville Intl

8:35 am - 11:10 pmONT Ontario-MIA Miami

11h 35m2 stops Phoenix Sky Harbor Intl Baltimore/Washington

$617Southwest

Wed, Nov 4 - Mon, Nov 9

9:25 am - 4:10 pmMIA Miami-ONT Ontario

9h 45m2 stops Dallas Love Field Phoenix Sky Harbor Intl

8:45 pm - 11:20 amONT Ontario-MIA Miami

11h 35m2 stops Las Vegas Harry Reid Intl Nashville Intl

$622Southwest

Wed, Nov 4 - Mon, Nov 9

4:58 pm - 9:40 pmMIA Miami-ONT Ontario

7h 42m1 stop Houston George Bush Intcntl

6:00 am - 6:20 pmONT Ontario-MIA Miami

9h 20m1 stop Houston George Bush Intcntl

$655United Airlines

Mon, Nov 9 - Sat, Nov 14

6:04 am - 11:06 amMIA Miami-ONT Ontario

8h 02m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 12:53 amONT Ontario-MIA Miami

9h 37m1 stop Atlanta Hartsfield-Jackson

$695Delta

Fri, Nov 6 - Sat, Nov 7

4:40 pm - 10:48 pmMIA Miami-ONT Ontario

9h 08m1 stop San Francisco

5:00 am - 3:37 pmONT Ontario-MIA Miami

7h 37m1 stop Denver Intl

$717United Airlines

Mon, Nov 9 - Fri, Nov 13

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Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets

Frontier

Dec 3

MIA10:49 amMiami

16h 28m

2 stops

ONT12:17 amOntario

Dec 5

ONT11:30 amOntario

19h 29m

2 stops

MIA9:59 amMiami

$188

Frontier

Dec 2

MIA10:49 amMiami

14h 31m

2 stops

ONT10:20 pmOntario

Dec 9

ONT11:30 amOntario

19h 29m

2 stops

MIA9:59 amMiami

$202

Frontier

Dec 2

MIA10:49 amMiami

14h 31m

2 stops

ONT10:20 pmOntario

Dec 9

ONT11:30 amOntario

19h 29m

2 stops

MIA9:59 amMiami

$212

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 12/3

10:49 am-12:17 am

2 stops16h 28m

Ontario

Sat 12/5

11:30 am-9:59 am

2 stops19h 29m

$188

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 12/2

10:49 am-10:20 pm

2 stops14h 31m

Ontario

Wed 12/9

11:30 am-9:59 am

2 stops19h 29m

$202

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 12/3

4:51 pm-11:54 pm

1 stop10h 03m

Ontario

Sat 12/5

6:00 am-9:14 pm

1 stop12h 14m

$394

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 12/3

4:51 pm-11:54 pm

1 stop10h 03m

Ontario

Sat 12/5

6:00 am-9:14 pm

1 stop12h 14m

$398

Quickest round-trip

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 1/6

6:34 pm-11:58 pm

1 stop8h 24m

Ontario

Tue 2/16

6:00 am-5:23 pm

1 stop8h 23m

$432

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 1/6

6:34 pm-11:58 pm

1 stop8h 24m

Ontario

Wed 2/17

6:00 am-5:23 pm

1 stop8h 23m

$432

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 11/25

3:40 pm-11:20 pm

1 stop10h 40m

Ontario

Sun 11/29

7:33 pm-5:58 am

1 stop7h 25m

$465

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 4/15

4:55 pm-10:15 pm

1 stop8h 20m

Ontario

Mon 4/19

6:10 am-9:55 pm

2 stops12h 45m

$502

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 4/15

6:15 am-1:50 pm

2 stops10h 35m

Ontario

Mon 4/19

6:10 am-9:55 pm

2 stops12h 45m

$507

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 11/26

5:10 am-5:13 pm

2 stops15h 03m

Ontario

Fri 11/27

2:09 pm-11:59 pm

1 stop6h 50m

$568

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

What is the typical price of a round-trip flight between Miami and Ontario?

Prices are currently low for flights on this route.

Typical prices usually range from $456 to $535.
The lowest price recently found on this route was $188.

What is the cheapest month to fly to Ontario?

In general, September 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 $298. If you aren’t able to travel during the month of September, then book flights to Ontario from Miami during October instead. Flights to Ontario in October, while not as cheap as those in September, still average around $326.

How have Miami to Ontario flight prices changed over time?

As of November 2026, prices for Miami to Ontario flights are approximately 31% 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

Best Price Found	$81
Fastest flight time	7h 27m
Direct flights	None

The best one-way flight to Ontario from Miami in the past 72 hours is $81. The best round-trip flight deal from Miami to Ontario found on momondo in the last 72 hours is $188.

The fastest flight from Miami to Ontario takes 7h 27m

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

Search flight deals

Frequently asked questions about flying from Miami to Ontario

How far is Miami to Ontario by plane?
A flight from Miami to Ontario will travel around 2299.8 mi. 7h 27m 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 2026.
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 54% of all bookings. The subsequent popular airlines are Frontier at 21%, Southwest at 13%, and Delta at 11%.

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 $165	Free Cancellation	Rating 5.5 2,512 reviews	Search Frontier flights
Southwest	PriceFrom $326	Free Cancellation	Rating 8.0 4,215 reviews	Search Southwest flights
American Airlines	PriceFrom $326	Free Cancellation	Rating 7.0 12,230 reviews	Search American Airlines flights
Delta	PriceFrom $341	Free Cancellation	Rating 7.8 8,696 reviews	Search Delta 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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Cheap flights from Miami to Los Angeles from $81

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 12/7. 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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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

What is the typical price of a round-trip flight between Miami and Ontario?

What is the cheapest month to fly to Ontario?

How have Miami to Ontario flight prices changed over time?

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

What airlines fly to Ontario?

When to book flights from Miami to Ontario

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

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

Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Los Angeles

List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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