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

Delta and United 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 49% 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 3 as of October 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.

$87 Cheap Flights from Miami to Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Miami to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:55 pm - 10:42 amMIA Miami-ONT Ontario

14h 47m2 stops Atlanta Hartsfield-Jackson Denver Intl

6:25 am - 10:07 pmONT Ontario-MIA Miami

12h 42m2 stops Denver Intl Dallas/Fort Worth

$215Frontier

Fri, Nov 13 - Mon, Nov 16

10:55 pm - 10:35 amMIA Miami-ONT Ontario

14h 40m2 stops Atlanta Hartsfield-Jackson Denver Intl

6:25 am - 10:07 pmONT Ontario-MIA Miami

12h 42m2 stops Denver Intl Dallas/Fort Worth

$233Frontier

Mon, Nov 9 - Mon, Nov 16

9:47 am - 11:50 pmMIA Miami-ONT Ontario

17h 03m2 stops Dallas/Fort Worth Denver Intl

10:35 am - 10:29 amONT Ontario-MIA Miami

20h 54m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

$235Frontier

Thu, Oct 22 - Wed, Oct 28

7:25 am - 11:50 pmMIA Miami-ONT Ontario

19h 25m3 stops Baltimore/Washington Dallas/Fort Worth Denver Intl

11:52 am - 11:50 amONT Ontario-MIA Miami

20h 58m2 stops Denver Intl Minneapolis St Paul

$283Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

5:15 am - 11:51 pmMIA Miami-ONT Ontario

21h 36m3 stops Atlanta Hartsfield-Jackson Dallas/Fort Worth Denver Intl

11:52 am - 10:45 amONT Ontario-MIA Miami

19h 53m2 stops Denver Intl Minneapolis St Paul

$288Multiple Airlines

Thu, Nov 5 - Sat, Nov 7

7:25 am - 11:50 pmMIA Miami-ONT Ontario

19h 25m3 stops Baltimore/Washington Dallas/Fort Worth Denver Intl

11:52 am - 11:50 amONT Ontario-MIA Miami

20h 58m2 stops Denver Intl Minneapolis St Paul

$289Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

5:20 am - 9:35 amMIA Miami-ONT Ontario

7h 15m1 stop Dallas/Fort Worth

2:22 pm - 12:03 amONT Ontario-MIA Miami

6h 41m1 stop Dallas/Fort Worth

$397American Airlines

Sat, Oct 24 - Sat, Oct 31

5:20 am - 9:35 amMIA Miami-ONT Ontario

7h 15m1 stop Dallas/Fort Worth

2:22 pm - 12:03 amONT Ontario-MIA Miami

6h 41m1 stop Dallas/Fort Worth

$398American Airlines

Sat, Oct 24 - Sat, Oct 31

6:50 am - 4:10 pmMIA Miami-ONT Ontario

12h 20m2 stops Orlando Phoenix Sky Harbor Intl

5:45 am - 6:20 pmONT Ontario-MIA Miami

9h 35m2 stops Las Vegas Harry Reid Intl Nashville Intl

$461Southwest

Thu, Dec 3 - Sat, Dec 5

5:20 am - 9:25 amMIA Miami-ONT Ontario

7h 05m1 stop Houston Hobby

9:30 pm - 11:25 amONT Ontario-MIA Miami

10h 55m2 stops Las Vegas Harry Reid Intl Nashville Intl

$472Southwest

Fri, Oct 16 - Mon, Oct 19

Cheap last minute flights

Enter your travel dates to find the best prices.

5:55 am - 10:30 amMIA Miami-ONT Ontario

7h 35m1 stop Denver Intl

11:52 am - 12:47 amONT Ontario-MIA Miami

9h 55m1 stop Denver Intl

$333Frontier

Tue, Oct 6 - Tue, Oct 20

5:55 am - 10:30 amMIA Miami-ONT Ontario

7h 35m1 stop Denver Intl

5:07 pm - 3:25 pmONT Ontario-MIA Miami

19h 18m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

$333Frontier

Wed, Oct 7 - Wed, Oct 28

5:55 am - 10:30 amMIA Miami-ONT Ontario

7h 35m1 stop Denver Intl

5:25 pm - 2:18 pmONT Ontario-MIA Miami

17h 53m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

$334Frontier

Tue, Oct 6 - Tue, Oct 20

6:55 am - 12:36 pmMIA Miami-ONT Ontario

8h 41m1 stop Salt Lake City

12:16 pm - 10:41 pmONT Ontario-MIA Miami

7h 25m1 stop Atlanta Hartsfield-Jackson

$562Delta

Wed, Oct 7 - Fri, Oct 16

2:15 pm - 8:25 pmMIA Miami-ONT Ontario

9h 10m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 10:41 pmONT Ontario-MIA Miami

7h 25m1 stop Atlanta Hartsfield-Jackson

$562Delta

Tue, Oct 6 - Fri, Oct 16

7:05 am - 12:14 pmMIA Miami-ONT Ontario

8h 09m1 stop Salt Lake City

12:16 pm - 10:41 pmONT Ontario-MIA Miami

7h 25m1 stop Atlanta Hartsfield-Jackson

$562Delta

Sat, Oct 3 - Fri, Oct 16

8:25 am - 3:35 pmMIA Miami-ONT Ontario

10h 10m2 stops Dallas Love Field Phoenix Sky Harbor Intl

8:25 am - 8:05 pmONT Ontario-MIA Miami

8h 40m2 stops Las Vegas Harry Reid Intl Nashville Intl

$597Southwest

Tue, Oct 6 - Wed, Oct 7

6:40 pm - 11:50 pmMIA Miami-ONT Ontario

8h 10m2 stops Dallas Love Field Phoenix Sky Harbor Intl

8:25 am - 8:05 pmONT Ontario-MIA Miami

8h 40m2 stops Las Vegas Harry Reid Intl Nashville Intl

$602Southwest

Thu, Oct 8 - Tue, Oct 13

5:25 am - 12:03 pmMIA Miami-ONT Ontario

9h 38m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

11:59 pm - 9:52 amONT Ontario-MIA Miami

6h 53m1 stop Dallas/Fort Worth

$722American Airlines

Sat, Oct 3 - Tue, Oct 6

9:30 am - 6:17 pmMIA Miami-ONT Ontario

11h 47m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

1:05 pm - 11:54 pmONT Ontario-MIA Miami

7h 49m1 stop Phoenix Sky Harbor Intl

$722American Airlines

Sat, Oct 3 - Wed, Oct 7

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets

Frontier

Nov 13

MIA10:55 pmMiami

14h 47m

2 stops

ONT10:42 amOntario

Nov 16

ONT6:25 amOntario

12h 42m

2 stops

MIA10:07 pmMiami

$215

Frontier

Nov 9

MIA10:55 pmMiami

14h 40m

2 stops

ONT10:35 amOntario

Nov 16

ONT6:25 amOntario

12h 42m

2 stops

MIA10:07 pmMiami

$233

Frontier

Oct 22

MIA9:47 amMiami

17h 03m

2 stops

ONT11:50 pmOntario

Oct 28

ONT10:35 amOntario

20h 54m

2 stops

MIA10:29 amMiami

$235

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Fri 11/13

10:55 pm-10:42 am

2 stops14h 47m

Ontario

Mon 11/16

6:25 am-10:07 pm

2 stops12h 42m

$215

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Mon 11/9

10:55 pm-10:35 am

2 stops14h 40m

Ontario

Mon 11/16

6:25 am-10:07 pm

2 stops12h 42m

$233

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 10/22

9:47 am-11:50 pm

2 stops17h 03m

Ontario

Wed 10/28

10:35 am-10:29 am

2 stops20h 54m

$235

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Sat 10/24

7:25 am-11:50 pm

3 stops19h 25m

Ontario

Sat 10/31

11:52 am-11:50 am

2 stops20h 58m

$283

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 11/5

5:15 am-11:51 pm

3 stops21h 36m

Ontario

Sat 11/7

11:52 am-10:45 am

2 stops19h 53m

$288

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Sat 10/24

7:25 am-11:50 pm

3 stops19h 25m

Ontario

Sat 10/31

11:52 am-11:50 am

2 stops20h 58m

$289

Quickest round-trip

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Sat 10/24

5:20 am-9:35 am

1 stop7h 15m

Ontario

Sat 10/31

2:22 pm-12:03 am

1 stop6h 41m

$397

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Sat 10/24

5:20 am-9:35 am

1 stop7h 15m

Ontario

Sat 10/31

2:22 pm-12:03 am

1 stop6h 41m

$398

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 12/3

6:50 am-4:10 pm

2 stops12h 20m

Ontario

Sat 12/5

5:45 am-6:20 pm

2 stops9h 35m

$461

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Fri 10/16

5:20 am-9:25 am

1 stop7h 05m

Ontario

Mon 10/19

9:30 pm-11:25 am

2 stops10h 55m

$472

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 $294 to $446.
The lowest price recently found on this route was $215.

What is the cheapest month to fly to Ontario?

In general, June 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 $341. If you aren’t able to travel during the month of June, then book flights to Ontario from Miami during February instead. Flights to Ontario in February, while not as cheap as those in June, still average around $347.

How have Miami to Ontario flight prices changed over time?

As of October 2026, prices for Miami to Ontario flights are approximately 28% cheaper 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	$87
Fastest flight time	7h 39m
Direct flights	None

The best one-way flight to Ontario from Miami in the past 72 hours is $87. The best round-trip flight deal from Miami to Ontario found on momondo in the last 72 hours is $215.

The fastest flight from Miami to Ontario takes 7h 39m

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 39m 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 3 as of October 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 66% of all bookings. The subsequent popular airlines are Frontier at 20% and Southwest at 13%.

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 5.6 2,565 reviews	Search Frontier flights
American Airlines	PriceFrom $306	Free Cancellation	Rating 7.0 12,128 reviews	Search American Airlines flights
Southwest	PriceFrom $326	Free Cancellation	Rating 7.9 4,214 reviews	Search Southwest 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Mon 11/2

Mon 11/9

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Miami

Complete your trip

Feeling lucky

Cheap flights from Miami to Los Angeles from $87

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 10/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Miami to Los Angeles

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Miami to Ontario that are best for you.

See travel insights to Los Angeles from

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.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Miami

According to popular flight searches on momondo this year

Complete your trip to Los Angeles

Explore popular destinations other users love

According to popular flight searches on momondo this year