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

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

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 40% 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.

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

Flights connecting via Houston (IAH) have the shortest average one-way travel time: 6h 23m.

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

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

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?

Phoenix (PHX) was the most common stop: 20% of momondo users choosing 1-stop flights on this route connected there.

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 August 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.

$83 Cheap Flights from Ontario to Miami in 2026

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Find the cheapest flights from Ontario to Miami

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 5:48 amONT Ontario-MIA Miami

12h 13m1 stop Denver Intl

7:20 am - 1:40 pmMIA Miami-ONT Ontario

9h 20m1 stop Denver Intl

$168Frontier

Thu, Nov 12 - Tue, Nov 17

2:35 pm - 5:48 amONT Ontario-MIA Miami

12h 13m1 stop Denver Intl

7:20 am - 1:40 pmMIA Miami-ONT Ontario

9h 20m1 stop Denver Intl

$168Frontier

Sat, Nov 7 - Sat, Nov 14

6:00 am - 4:49 pmONT Ontario-MIA Miami

7h 49m1 stop San Francisco

9:15 am - 3:33 pmMIA Miami-ONT Ontario

9h 18m1 stop San Francisco

$267United Airlines

Tue, Nov 10 - Sat, Nov 14

12:18 pm - 12:53 amONT Ontario-MIA Miami

9h 35m1 stop Atlanta Hartsfield-Jackson

6:00 am - 11:10 amMIA Miami-ONT Ontario

8h 10m1 stop Atlanta Hartsfield-Jackson

$267Delta

Sat, Nov 7 - Wed, Nov 11

5:15 pm - 5:49 amONT Ontario-MIA Miami

9h 34m1 stop Salt Lake City

6:00 am - 11:05 amMIA Miami-ONT Ontario

8h 05m1 stop Atlanta Hartsfield-Jackson

$267Delta

Mon, Sep 28 - Sat, Oct 3

7:30 am - 4:55 pmONT Ontario-MIA Miami

6h 25m1 stop Austin Bergstrom

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

9h 00m1 stop Nashville Intl

$268Southwest

Wed, Oct 28 - Wed, Nov 11

5:55 am - 4:45 pmONT Ontario-MIA Miami

7h 50m2 stops Phoenix Sky Harbor Intl Dallas Love Field

6:20 am - 10:40 amMIA Miami-ONT Ontario

7h 20m1 stop Dallas Love Field

$272Southwest

Tue, Nov 10 - Sat, Nov 14

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

7h 49m1 stop Phoenix Sky Harbor Intl

7:30 am - 12:14 pmMIA Miami-ONT Ontario

7h 44m1 stop Phoenix Sky Harbor Intl

$280American Airlines

Mon, Oct 19 - Sat, Oct 24

6:00 am - 3:55 pmONT Ontario-MIA Miami

6h 55m1 stop Houston George Bush Intcntl

11:30 am - 8:53 pmMIA Miami-ONT Ontario

12h 23m2 stops Houston George Bush Intcntl Denver Intl

$316United Airlines

Mon, Aug 31 - Tue, Sep 1

7:00 am - 7:59 pmONT Ontario-MIA Miami

9h 59m1 stop Dallas/Fort Worth

4:45 pm - 9:39 pmMIA Miami-ONT Ontario

7h 54m1 stop Dallas/Fort Worth

$340American Airlines

Sat, Nov 14 - Tue, Nov 24

Cheap last minute flights

Enter your travel dates to find the best prices.

9:36 am - 12:21 amONT Ontario-MIA Miami

11h 45m1 stop Houston George Bush Intcntl

8:00 am - 7:01 pmMIA Miami-ONT Ontario

14h 01m1 stop Houston George Bush Intcntl

$324Frontier

Sun, Aug 16 - Tue, Sep 1

9:36 am - 12:21 amONT Ontario-MIA Miami

11h 45m1 stop Houston George Bush Intcntl

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

9h 23m1 stop Houston George Bush Intcntl

$366Frontier

Fri, Aug 14 - Mon, Sep 28

6:00 am - 5:17 amONT Ontario-MIA Miami

20h 17m1 stop Denver Intl

3:30 pm - 11:04 amMIA Miami-ONT Ontario

22h 34m2 stops Dallas/Fort Worth Seattle/Tacoma Intl

$484Multiple Airlines

Sat, Aug 15 - Mon, Aug 24

10:49 am - 5:17 amONT Ontario-MIA Miami

15h 28m1 stop Denver Intl

5:40 pm - 11:04 amMIA Miami-ONT Ontario

20h 24m2 stops Dallas/Fort Worth Seattle/Tacoma Intl

$485Multiple Airlines

Sat, Aug 15 - Mon, Aug 24

2:55 pm - 11:30 amONT Ontario-MIA Miami

17h 35m2 stops Las Vegas Harry Reid Intl Orlando

11:45 am - 7:25 pmMIA Miami-ONT Ontario

10h 40m2 stops Nashville Intl Las Vegas Harry Reid Intl

$528Southwest

Sat, Aug 15 - Mon, Aug 24

2:55 pm - 11:30 amONT Ontario-MIA Miami

17h 35m2 stops Las Vegas Harry Reid Intl Orlando

5:45 am - 11:25 amMIA Miami-ONT Ontario

8h 40m2 stops Houston Hobby Las Vegas Harry Reid Intl

$528Southwest

Sat, Aug 15 - Mon, Aug 24

12:00 pm - 1:07 amONT Ontario-MIA Miami

10h 07m1 stop Atlanta Hartsfield-Jackson

6:00 am - 10:42 amMIA Miami-ONT Ontario

7h 42m1 stop Atlanta Hartsfield-Jackson

$572Delta

Mon, Aug 17 - Sat, Aug 22

12:00 pm - 12:47 amONT Ontario-MIA Miami

9h 47m1 stop Atlanta Hartsfield-Jackson

7:15 am - 12:16 pmMIA Miami-ONT Ontario

8h 01m1 stop Salt Lake City

$572Delta

Sat, Aug 15 - Fri, Aug 21

6:00 am - 3:55 pmONT Ontario-MIA Miami

6h 55m1 stop Houston George Bush Intcntl

11:30 am - 8:53 pmMIA Miami-ONT Ontario

12h 23m2 stops Houston George Bush Intcntl Denver Intl

$618United Airlines

Sun, Aug 16 - Tue, Sep 1

5:00 am - 3:56 pmONT Ontario-MIA Miami

7h 56m1 stop Denver Intl

5:01 pm - 9:59 pmMIA Miami-ONT Ontario

7h 58m1 stop Houston George Bush Intcntl

$627United Airlines

Mon, Aug 17 - Mon, Aug 24

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Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets

Delta

Sep 15

ONT12:17 pmOntario

9h 38m

1 stop

MIA12:55 amMiami

Sep 19

MIA6:00 amMiami

8h 05m

1 stop

ONT11:05 amOntario

$267

Delta

Aug 25

ONT5:05 pmOntario

9h 55m

1 stop

MIA6:00 amMiami

Sep 1

MIA6:00 amMiami

7h 42m

1 stop

ONT10:42 amOntario

$363

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

Frontier

Sep 19

ONT11:45 amOntario

10h 01m

1 stop

MIA12:46 amMiami

Sep 22

MIA5:50 amMiami

7h 40m

1 stop

ONT10:30 amOntario

$168

Frontier

Oct 22

ONT3:57 pmOntario

28h 17m

1 stop

MIA11:14 pmMiami

Nov 7

MIA7:20 amMiami

19h 35m

1 stop

ONT11:55 pmOntario

$178

Frontier

Sep 21

ONT11:45 amOntario

10h 01m

1 stop

MIA12:46 amMiami

Sep 22

MIA5:50 amMiami

7h 40m

1 stop

ONT10:30 amOntario

$181

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 11/12

2:35 pm-5:48 am

1 stop12h 13m

Miami

Tue 11/17

7:20 am-1:40 pm

1 stop9h 20m

$168

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 11/7

2:35 pm-5:48 am

1 stop12h 13m

Miami

Sat 11/14

7:20 am-1:40 pm

1 stop9h 20m

$168

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 11/10

6:00 am-4:49 pm

1 stop7h 49m

Miami

Sat 11/14

9:15 am-3:33 pm

1 stop9h 18m

$267

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 11/7

12:18 pm-12:53 am

1 stop9h 35m

Miami

Wed 11/11

6:00 am-11:10 am

1 stop8h 10m

$267

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Mon 9/28

5:15 pm-5:49 am

1 stop9h 34m

Miami

Sat 10/3

6:00 am-11:05 am

1 stop8h 05m

$267

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 10/28

7:30 am-4:55 pm

1 stop6h 25m

Miami

Wed 11/11

9:10 am-3:10 pm

1 stop9h 00m

$268

Quickest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 11/10

5:55 am-4:45 pm

2 stops7h 50m

Miami

Sat 11/14

6:20 am-10:40 am

1 stop7h 20m

$272

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Mon 10/19

1:05 pm-11:54 pm

1 stop7h 49m

Miami

Sat 10/24

7:30 am-12:14 pm

1 stop7h 44m

$280

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Mon 8/31

6:00 am-3:55 pm

1 stop6h 55m

Miami

Tue 9/1

11:30 am-8:53 pm

2 stops12h 23m

$316

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 11/14

7:00 am-7:59 pm

1 stop9h 59m

Miami

Tue 11/24

4:45 pm-9:39 pm

1 stop7h 54m

$340

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 $311 to $427.
The lowest price recently found on this route was $168.

What is the cheapest month to fly to Miami?

The month of September is, on average, the cheapest month to fly to Miami from Ontario, with most prices found around $344. If you are unable to visit Miami during the month of September, then departing from Ontario during the month August is also very affordable. Most momondo users find prices during this month for around $352.

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 $562. 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 $642.

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 $452. 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 $605. 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 $419 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 August 2026, prices for Ontario to Miami flights are approximately 58% 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

Fastest flight time	6h 00m
Direct flights	None

The fastest flight from Ontario to Miami takes 6h 00m

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

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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 00m.
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 August 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 43% of the total bookings. Other popular airlines include United Airlines with 19%, Frontier with 15%, 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 $145	Free Cancellation	Rating 5.6 2,701 reviews	Search Frontier flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
JetBlue	PriceFrom $213	Free Cancellation	Rating 7.1 3,035 reviews	Search JetBlue flights
American Airlines	PriceFrom $325	Free Cancellation	Rating 7.1 11,915 reviews	Search American Airlines flights
United Airlines	PriceFrom $326	Free Cancellation	Rating 7.4 10,115 reviews	Search United Airlines flights
Southwest	PriceFrom $356	Free Cancellation	Rating 8.0 4,218 reviews	Search Southwest flights

Miami Beach

Hollywood

Islamorada

Marco Island

Key Largo

Marathon

Palm Beach

Pompano Beach

Delray Beach

Miami Springs

Dania Beach

Sunny Isles Beach

Bonita Springs

Doral

Lake Worth

Boynton Beach

Jupiter

Deerfield Beach

Lauderdale-by-the-Sea

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 $83

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 9/22. 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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Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

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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

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

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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.

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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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