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.

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

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

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 September 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.

$118 Cheap Flights from Miami to Ontario in 2026

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.

11:25 am - 5:48 pmMIA Miami-ONT Ontario

9h 23m1 stop Houston George Bush Intcntl

6:45 pm - 5:59 pmONT Ontario-MIA Miami

20h 14m1 stop Houston George Bush Intcntl

$241Frontier

Thu, Oct 1 - Mon, Oct 5

11:25 am - 5:48 pmMIA Miami-ONT Ontario

9h 23m1 stop Houston George Bush Intcntl

11:45 am - 12:46 amONT Ontario-MIA Miami

10h 01m1 stop Denver Intl

$257Frontier

Thu, Sep 24 - Wed, Sep 30

11:10 am - 3:16 pmMIA Miami-ONT Ontario

7h 06m1 stop Phoenix Sky Harbor Intl

12:43 pm - 10:34 pmONT Ontario-MIA Miami

6h 51m1 stop Dallas/Fort Worth

$397American Airlines

Wed, Oct 7 - Sat, Oct 10

5:00 am - 9:50 amMIA Miami-ONT Ontario

7h 50m1 stop Dallas/Fort Worth

12:44 pm - 10:59 pmONT Ontario-MIA Miami

7h 15m1 stop Dallas/Fort Worth

$397American Airlines

Mon, Jan 25 - Tue, Feb 9

3:49 pm - 9:56 pmMIA Miami-ONT Ontario

9h 07m1 stop Atlanta Hartsfield-Jackson

12:20 pm - 12:58 amONT Ontario-MIA Miami

9h 38m1 stop Atlanta Hartsfield-Jackson

$397Delta

Thu, Dec 3 - Wed, Dec 9

7:00 am - 12:17 pmMIA Miami-ONT Ontario

8h 17m1 stop Salt Lake City

12:20 pm - 12:58 amONT Ontario-MIA Miami

9h 38m1 stop Atlanta Hartsfield-Jackson

$397Delta

Wed, Dec 2 - Wed, Dec 9

11:30 am - 6:35 pmMIA Miami-ONT Ontario

10h 05m1 stop Austin Bergstrom

6:10 am - 4:55 pmONT Ontario-MIA Miami

7h 45m2 stops Phoenix Sky Harbor Intl Dallas Love Field

$402Southwest

Wed, Oct 14 - Wed, Oct 21

6:40 am - 1:25 pmMIA Miami-ONT Ontario

9h 45m2 stops Orlando Phoenix Sky Harbor Intl

11:20 am - 9:55 pmONT Ontario-MIA Miami

7h 35m1 stop Dallas Love Field

$402Southwest

Mon, Jan 25 - Tue, Feb 9

5:50 am - 10:29 amMIA Miami-ONT Ontario

7h 39m1 stop Denver Intl

6:56 pm - 12:55 pmONT Ontario-MIA Miami

14h 59m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl

$413Multiple Airlines

Fri, Oct 23 - Mon, Oct 26

5:50 am - 10:30 amMIA Miami-ONT Ontario

7h 40m1 stop Denver Intl

11:13 am - 10:18 amONT Ontario-MIA Miami

20h 05m2 stops Seattle/Tacoma Intl Philadelphia

$414Multiple Airlines

Wed, Sep 30 - Wed, Oct 7

Cheap last minute flights

Enter your travel dates to find the best prices.

6:50 am - 11:47 pmMIA Miami-ONT Ontario

19h 57m1 stop Denver Intl

6:15 am - 12:46 amONT Ontario-MIA Miami

15h 31m1 stop Denver Intl

$304Frontier

Wed, Sep 9 - Thu, Sep 10

11:25 am - 5:48 pmMIA Miami-ONT Ontario

9h 23m1 stop Houston George Bush Intcntl

11:45 am - 12:46 amONT Ontario-MIA Miami

10h 01m1 stop Denver Intl

$326Frontier

Thu, Sep 10 - Tue, Sep 15

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

8h 09m1 stop Salt Lake City

12:17 pm - 12:55 amONT Ontario-MIA Miami

9h 38m1 stop Atlanta Hartsfield-Jackson

$465Delta

Wed, Sep 9 - Sat, Sep 19

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

8h 09m1 stop Salt Lake City

12:17 pm - 12:55 amONT Ontario-MIA Miami

9h 38m1 stop Atlanta Hartsfield-Jackson

$465Delta

Wed, Sep 9 - Wed, Sep 16

3:52 pm - 8:53 pmMIA Miami-ONT Ontario

8h 01m1 stop Denver Intl

5:00 am - 10:34 pmONT Ontario-MIA Miami

14h 34m2 stops Denver Intl Houston George Bush Intcntl

$528United Airlines

Wed, Sep 9 - Thu, Sep 10

3:52 pm - 8:53 pmMIA Miami-ONT Ontario

8h 01m1 stop Denver Intl

5:00 am - 10:34 pmONT Ontario-MIA Miami

14h 34m2 stops Denver Intl Houston George Bush Intcntl

$528United Airlines

Wed, Sep 9 - Sat, Sep 12

12:15 pm - 6:15 pmMIA Miami-ONT Ontario

9h 00m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

12:37 pm - 11:18 pmONT Ontario-MIA Miami

7h 41m1 stop Dallas/Fort Worth

$572American Airlines

Tue, Sep 8 - Sat, Sep 12

7:05 am - 1:53 pmMIA Miami-ONT Ontario

9h 48m1 stop Dallas/Fort Worth

7:11 pm - 5:28 amONT Ontario-MIA Miami

7h 17m1 stop Phoenix Sky Harbor Intl

$572American Airlines

Sat, Sep 5 - Sun, Sep 13

7:00 am - 3:15 pmMIA Miami-ONT Ontario

11h 15m2 stops Orlando Phoenix Sky Harbor Intl

11:55 pm - 12:10 pmONT Ontario-MIA Miami

9h 15m1 stop Chicago Midway

$577Southwest

Sat, Sep 5 - Sun, Sep 13

6:45 am - 2:05 pmMIA Miami-ONT Ontario

10h 20m2 stops Houston Hobby Phoenix Sky Harbor Intl

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

8h 25m1 stop Denver Intl

$577Southwest

Wed, Sep 9 - Thu, Sep 10

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

Oct 1

MIA11:25 amMiami

9h 23m

1 stop

ONT5:48 pmOntario

Oct 5

ONT6:45 pmOntario

20h 14m

1 stop

MIA5:59 pmMiami

$241

Frontier

Sep 24

MIA11:25 amMiami

9h 23m

1 stop

ONT5:48 pmOntario

Sep 30

ONT11:45 amOntario

10h 01m

1 stop

MIA12:46 amMiami

$257

Frontier

Oct 1

MIA11:25 amMiami

9h 23m

1 stop

ONT5:48 pmOntario

Oct 6

ONT6:15 amOntario

15h 31m

1 stop

MIA12:46 amMiami

$268

Delta flights from Miami to Ontario

Our best Delta deals on Miami to Ontario flight tickets

Delta

Sep 14

MIA7:05 amMiami

8h 09m

1 stop

ONT12:14 pmOntario

Sep 26

ONT7:05 amOntario

9h 01m

1 stop

MIA7:06 pmMiami

$457

Delta

Sep 9

MIA7:05 amMiami

8h 09m

1 stop

ONT12:14 pmOntario

Sep 19

ONT12:17 pmOntario

9h 38m

1 stop

MIA12:55 amMiami

$465

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 10/1

11:25 am-5:48 pm

1 stop9h 23m

Ontario

Mon 10/5

6:45 pm-5:59 pm

1 stop20h 14m

$241

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 9/24

11:25 am-5:48 pm

1 stop9h 23m

Ontario

Wed 9/30

11:45 am-12:46 am

1 stop10h 01m

$257

Quickest round-trip

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 10/7

11:10 am-3:16 pm

1 stop7h 06m

Ontario

Sat 10/10

12:43 pm-10:34 pm

1 stop6h 51m

$397

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Mon 1/25

5:00 am-9:50 am

1 stop7h 50m

Ontario

Tue 2/9

12:44 pm-10:59 pm

1 stop7h 15m

$397

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Thu 12/3

3:49 pm-9:56 pm

1 stop9h 07m

Ontario

Wed 12/9

12:20 pm-12:58 am

1 stop9h 38m

$397

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 12/2

7:00 am-12:17 pm

1 stop8h 17m

Ontario

Wed 12/9

12:20 pm-12:58 am

1 stop9h 38m

$397

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 10/14

11:30 am-6:35 pm

1 stop10h 05m

Ontario

Wed 10/21

6:10 am-4:55 pm

2 stops7h 45m

$402

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Mon 1/25

6:40 am-1:25 pm

2 stops9h 45m

Ontario

Tue 2/9

11:20 am-9:55 pm

1 stop7h 35m

$402

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Fri 10/23

5:50 am-10:29 am

1 stop7h 39m

Ontario

Mon 10/26

6:56 pm-12:55 pm

2 stops14h 59m

$413

MiamiOntario

MIA Miami - ONT Ontario

MIAONT

Miami

Wed 9/30

5:50 am-10:30 am

1 stop7h 40m

Ontario

Wed 10/7

11:13 am-10:18 am

2 stops20h 05m

$414

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 $298 to $416.
The lowest price recently found on this route was $241.

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 September 2026, prices for Miami to Ontario flights are approximately 54% 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	$118
Fastest flight time	7h 39m
Direct flights	None

The best one-way flight to Ontario from Miami in the past 72 hours is $118. The best round-trip flight deal from Miami to Ontario found on momondo in the last 72 hours is $241.

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 4 as of September 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 14%, Southwest at 11%, and Delta at 9%.

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 $160	Free Cancellation	Rating 5.6 2,626 reviews	Search Frontier flights
American Airlines	PriceFrom $298	Free Cancellation	Rating 7.1 12,036 reviews	Search American Airlines flights
Southwest	PriceFrom $326	Free Cancellation	Rating 8.0 4,201 reviews	Search Southwest flights
Delta	PriceFrom $341	Free Cancellation	Rating 7.8 8,554 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sun 10/4

Sun 10/11

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 $118

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 9/24. 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

Delta flights from Miami to Ontario

Our best Delta 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