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

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

Which layover airport has the shortest connection time from Ontario to Miami?

Dallas (DFW) has the shortest average layover time for this route: 0h 50m.

Which airport is the most popular layover for flights between Ontario and Miami?

Houston (HOU) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Ontario to Miami?

Flights connecting via Houston (HOU) have the shortest average one-way travel time: 6h 11m.

Which layover airport offers the lowest fares from Ontario to Miami?

Flights via Houston (IAH) offer the lowest average round-trip price of $342.

What airlines fly to Miami?

American Airlines, JetBlue and Delta are the top three most popular airlines that fly to Miami from Ontario according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Miami. Keep in mind that there are 6 different airlines that fly to Miami on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario Airport to Miami Airport are updated daily.

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

As of October 2026, there are 6 operators available to choose from for flights from Ontario Airport to Miami Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Miami Airport.

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

The travel and health documents required for your trip to Miami 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 Miami Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$110 Cheap Flights from Ontario to Miami in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Miami

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:52 am - 10:29 amONT Ontario-MIA Miami

19h 37m2 stops Denver Intl Atlanta Hartsfield-Jackson

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

14h 40m2 stops Atlanta Hartsfield-Jackson Denver Intl

$259Frontier

Sat, Nov 14 - Mon, Nov 16

11:52 am - 10:29 amONT Ontario-MIA Miami

19h 37m2 stops Denver Intl Atlanta Hartsfield-Jackson

10:04 pm - 10:35 amMIA Miami-ONT Ontario

15h 31m2 stops Atlanta Hartsfield-Jackson Denver Intl

$259Frontier

Sat, Nov 14 - Tue, Nov 17

7:05 am - 6:40 pmONT Ontario-MIA Miami

8h 35m1 stop Atlanta Hartsfield-Jackson

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

8h 17m1 stop Salt Lake City

$279Delta

Wed, Nov 11 - Tue, Nov 17

7:05 am - 6:40 pmONT Ontario-MIA Miami

8h 35m1 stop Atlanta Hartsfield-Jackson

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

8h 17m1 stop Salt Lake City

$279Delta

Wed, Nov 11 - Sat, Nov 14

9:35 pm - 11:20 amONT Ontario-MIA Miami

10h 45m2 stops Las Vegas Harry Reid Intl Nashville Intl

2:35 pm - 9:45 pmMIA Miami-ONT Ontario

10h 10m1 stop Denver Intl

$305Southwest

Mon, Nov 30 - Wed, Dec 9

9:35 pm - 11:20 amONT Ontario-MIA Miami

10h 45m2 stops Las Vegas Harry Reid Intl Nashville Intl

9:25 am - 5:40 pmMIA Miami-ONT Ontario

11h 15m2 stops Dallas Love Field Phoenix Sky Harbor Intl

$310Southwest

Mon, Nov 30 - Wed, Dec 9

7:10 am - 3:44 pmONT Ontario-MIA Miami

29h 34m1 stop Portland

5:50 am - 12:05 amMIA Miami-ONT Ontario

21h 15m1 stop Denver Intl

$385Multiple Airlines

Tue, Jan 5 - Tue, Jan 12

6:25 am - 12:44 amONT Ontario-MIA Miami

15h 19m1 stop Denver Intl

6:10 pm - 11:18 amMIA Miami-ONT Ontario

20h 08m1 stop Seattle/Tacoma Intl

$427Multiple Airlines

Thu, Oct 29 - Tue, Nov 3

10:34 am - 10:37 pmONT Ontario-MIA Miami

9h 03m1 stop Dallas/Fort Worth

7:00 am - 12:47 pmMIA Miami-ONT Ontario

8h 47m1 stop Phoenix Sky Harbor Intl

$433American Airlines

Sat, Feb 13 - Sat, Feb 20

10:34 am - 10:37 pmONT Ontario-MIA Miami

9h 03m1 stop Dallas/Fort Worth

7:00 am - 12:47 pmMIA Miami-ONT Ontario

8h 47m1 stop Phoenix Sky Harbor Intl

$433American Airlines

Sat, Feb 13 - Sat, Feb 20

Cheap last minute flights

Enter your travel dates to find the best prices.

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

9h 55m1 stop Denver Intl

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

7h 45m1 stop Denver Intl

$361Frontier

Sat, Oct 24 - Tue, Nov 3

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

9h 55m1 stop Denver Intl

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

7h 45m1 stop Denver Intl

$361Frontier

Sat, Oct 24 - Tue, Nov 3

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

9h 37m1 stop Atlanta Hartsfield-Jackson

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

8h 41m1 stop Salt Lake City

$607Delta

Tue, Oct 20 - Tue, Oct 27

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

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

12:05 pm - 9:45 pmMIA Miami-ONT Ontario

12h 40m2 stops Baltimore/Washington Denver Intl

$617Southwest

Tue, Oct 20 - Tue, Oct 27

5:30 am - 5:20 pmONT Ontario-MIA Miami

8h 50m2 stops Phoenix Sky Harbor Intl Austin Bergstrom

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

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

$617Southwest

Sat, Oct 24 - Tue, Oct 27

11:15 pm - 9:24 amONT Ontario-MIA Miami

7h 09m1 stop Atlanta Hartsfield-Jackson

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

8h 41m1 stop Salt Lake City

$695Delta

Fri, Oct 23 - Tue, Oct 27

5:00 am - 10:19 pmONT Ontario-MIA Miami

14h 19m2 stops Denver Intl Houston George Bush Intcntl

3:42 pm - 8:51 pmMIA Miami-ONT Ontario

8h 09m1 stop Denver Intl

$742United Airlines

Sat, Oct 24 - Wed, Oct 28

8:03 am - 8:53 pmONT Ontario-MIA Miami

9h 50m1 stop San Francisco

1:15 pm - 8:58 pmMIA Miami-ONT Ontario

10h 43m2 stops Houston George Bush Intcntl Denver Intl

$742United Airlines

Tue, Oct 20 - Wed, Oct 21

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

20h 05m2 stops Seattle/Tacoma Intl Philadelphia

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

7h 39m1 stop Denver Intl

$748Multiple Airlines

Thu, Oct 22 - Sun, Oct 25

7:25 am - 10:34 pmONT Ontario-MIA Miami

12h 09m2 stops Portland Dallas/Fort Worth

9:25 am - 8:15 pmMIA Miami-ONT Ontario

13h 50m2 stops Dallas/Fort Worth Portland

$835Alaska Airlines

Thu, Oct 22 - Wed, Oct 28

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Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

Frontier

Nov 14

ONT11:52 amOntario

19h 37m

2 stops

MIA10:29 amMiami

Nov 17

MIA10:04 pmMiami

15h 31m

2 stops

ONT10:35 amOntario

$259

Frontier

Dec 7

ONT11:30 amOntario

19h 29m

2 stops

MIA9:59 amMiami

Dec 11

MIA9:08 pmMiami

16h 37m

2 stops

ONT10:45 amOntario

$281

Frontier

Nov 14

ONT11:52 amOntario

19h 37m

2 stops

MIA10:29 amMiami

Nov 17

MIA5:50 amMiami

7h 45m

1 stop

ONT10:35 amOntario

$286

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets

Delta

Nov 11

ONT7:05 amOntario

8h 35m

1 stop

MIA6:40 pmMiami

Nov 14

MIA7:00 amMiami

8h 17m

1 stop

ONT12:17 pmOntario

$279

Delta

Nov 30

ONT5:04 pmOntario

10h 29m

1 stop

MIA6:33 amMiami

Dec 9

MIA2:10 pmMiami

9h 48m

1 stop

ONT8:58 pmOntario

$298

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 11/14

11:52 am-10:29 am

2 stops19h 37m

Miami

Mon 11/16

10:55 pm-10:35 am

2 stops14h 40m

$259

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 11/14

11:52 am-10:29 am

2 stops19h 37m

Miami

Tue 11/17

10:04 pm-10:35 am

2 stops15h 31m

$259

Quickest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 11/11

7:05 am-6:40 pm

1 stop8h 35m

Miami

Tue 11/17

7:00 am-12:17 pm

1 stop8h 17m

$279

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 11/11

7:05 am-6:40 pm

1 stop8h 35m

Miami

Sat 11/14

7:00 am-12:17 pm

1 stop8h 17m

$279

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Mon 11/30

9:35 pm-11:20 am

2 stops10h 45m

Miami

Wed 12/9

2:35 pm-9:45 pm

1 stop10h 10m

$305

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Mon 11/30

9:35 pm-11:20 am

2 stops10h 45m

Miami

Wed 12/9

9:25 am-5:40 pm

2 stops11h 15m

$310

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 1/5

7:10 am-3:44 pm

1 stop29h 34m

Miami

Tue 1/12

5:50 am-12:05 am

1 stop21h 15m

$385

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 10/29

6:25 am-12:44 am

1 stop15h 19m

Miami

Tue 11/3

6:10 pm-11:18 am

1 stop20h 08m

$427

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 2/13

10:34 am-10:37 pm

1 stop9h 03m

Miami

Sat 2/20

7:00 am-12:47 pm

1 stop8h 47m

$433

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 2/13

10:34 am-10:37 pm

1 stop9h 03m

Miami

Sat 2/20

7:00 am-12:47 pm

1 stop8h 47m

$433

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 Ontario to Miami

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

Layovers

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

Prices are currently low for flights on this route.

Typical prices usually range from $377 to $517.
The lowest price recently found on this route was $259.

What is the cheapest month to fly to Miami?

The month of August is, on average, the cheapest month to fly to Miami from Ontario, with most prices found around $366. If you are unable to visit Miami during the month of August, then departing from Ontario during the month February is also very affordable. Most momondo users find prices during this month for around $370.

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

The cheapest day to depart from Ontario to Miami is on a Wednesday when prices can be found for as low as $581. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Miami on Sunday is $650.

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

In the afternoon is the cheapest time of day to fly from Ontario to Miami when you can find flight prices for as low as $525. Flying to Miami in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $618. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight from Ontario to Miami?

You are more likely to see cheaper flights to Miami from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Miami for around $441 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Miami from Ontario for as low as $371 on momondo.

How have Ontario to Miami flight prices changed over time?

As of October 2026, prices for Ontario to Miami flights are approximately 28% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Miami

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

Estimated round-trip price

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

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

Best Price Found	$110
Fastest flight time	6h 51m
Direct flights	None

The best one-way flight to Miami from Ontario in the past 72 hours is $110. The best round-trip flight deal from Ontario to Miami found on momondo in the last 72 hours is $259.

The fastest flight from Ontario to Miami takes 6h 51m

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

Search flight deals

Frequently asked questions about flying from Ontario to Miami

How far is Ontario to Miami by plane?
Ontario and Miami are 2299.8 mi apart from one another. By plane, this route typically takes 6h 51m.
When did momondo last update prices for flights from Ontario Airport to Miami Airport?
Prices for flights from Ontario Airport to Miami Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Miami Airport?
As of October 2026, there are 6 operators available to choose from for flights from Ontario Airport to Miami Airport.
How old do you have to be to fly from Ontario Airport to Miami Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Miami Airport.
What documentation or ID do you need to fly to Miami Airport?
The travel and health documents required for your trip to Miami 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 Miami 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 Ontario to Miami?
Based on momondo bookings for flights between Ontario and Miami, the leading airline is American Airlines, making up 42% of the total bookings. Other popular airlines include Frontier with 18%, United Airlines with 16%, and Southwest with 12%.

Best airlines flying from Ontario to Miami

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $148	Free Cancellation	Rating 5.5 2,527 reviews	Search Frontier flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.8 8,653 reviews	Search Delta flights
JetBlue	PriceFrom $297	Free Cancellation	Rating 7.1 3,059 reviews	Search JetBlue flights
United Airlines	PriceFrom $326	Free Cancellation	Rating 7.3 10,389 reviews	Search United Airlines flights
American Airlines	PriceFrom $329	Free Cancellation	Rating 7.0 12,173 reviews	Search American Airlines flights
Southwest	PriceFrom $367	Free Cancellation	Rating 7.9 4,209 reviews	Search Southwest flights

Miami Beach

Islamorada

Hollywood

Marco Island

Key Largo

Marathon

Palm Beach

Pompano Beach

Delray Beach

Miami Springs

Dania Beach

Bonita Springs

Doral

Sunny Isles Beach

Boynton Beach

Lake Worth

Lauderdale-by-the-Sea

Jupiter

Deerfield Beach

Surfside

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Miami for you.

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

Yes. momondo enables you to select and highlight flights to Miami from Ontario with this policy.

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

Once all potential Ontario to Miami 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 Ontario to Miami right now. Can momondo alert me if prices change?

Price alerts on flights to Miami from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Ontario to Miami from $110

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Miami departing on 12/2. 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 Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets

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

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How to get the cheapest flight ticket from Ontario to Miami

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

What is the cheapest month to fly to Miami?

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

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

How far in advance should I book a flight from Ontario to Miami?

How have Ontario to Miami flight prices changed over time?

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

What airlines fly to Miami?

Which airport is the most popular layover for flights between Ontario and Miami?

Which layover airport offers the lowest fares from Ontario to Miami?

Which layover airport has the shortest travel time from Ontario to Miami?

Which layover airport has the shortest connection time from Ontario to Miami?

When to book flights from Ontario to Miami

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to Miami

Best airlines flying from Ontario to Miami

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

Traveling to a place near Miami?

Why use momondo?

An easier way to manage your Miami 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 Florida

Fly your favorite airline to Miami

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

Cabin classes currently available on flights to Miami

List of cabin classes available on flights landing in Miami. 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

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According to popular flight searches on momondo this year

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