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 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 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.

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.

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

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

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.

$95 Cheap Flights from Ontario to Miami in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Miami

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One-way

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Cheap round-trip flights

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

15h 31m1 stop Denver Intl

11:25 am - 11:47 pmMIA Miami-ONT Ontario

39h 22m2 stops Houston George Bush Intcntl Denver Intl

$213Frontier

Wed, Sep 30 - Mon, Oct 5

6:47 pm - 5:32 pmONT Ontario-MIA Miami

19h 45m1 stop Houston George Bush Intcntl

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

9h 20m1 stop Denver Intl

$218Frontier

Thu, Oct 22 - Sat, Oct 31

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

9h 52m1 stop Denver Intl

7:30 am - 3:05 pmMIA Miami-ONT Ontario

10h 35m1 stop Seattle/Tacoma Intl

$387Multiple Airlines

Wed, Nov 18 - Sun, Nov 22

12:26 pm - 11:30 pmONT Ontario-MIA Miami

8h 04m1 stop Phoenix Sky Harbor Intl

6:00 am - 1:32 pmMIA Miami-ONT Ontario

10h 32m1 stop Dallas/Fort Worth

$397American Airlines

Thu, Feb 18 - Sat, Feb 27

6:00 am - 3:25 pmONT Ontario-MIA Miami

6h 25m1 stop Houston George Bush Intcntl

8:45 am - 6:44 pmMIA Miami-ONT Ontario

12h 59m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$402United Airlines

Thu, Feb 18 - Sat, Feb 27

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

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

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

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

$407Southwest

Wed, Nov 11 - Tue, Nov 17

7:45 am - 8:15 pmONT Ontario-MIA Miami

9h 30m2 stops Las Vegas Harry Reid Intl Nashville Intl

2:20 pm - 9:00 pmMIA Miami-ONT Ontario

9h 40m2 stops Dallas Love Field Phoenix Sky Harbor Intl

$407Southwest

Tue, Sep 22 - Tue, Sep 29

3:07 pm - 7:56 pmONT Ontario-MIA Miami

25h 49m2 stops Seattle/Tacoma Intl Dallas/Fort Worth

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

7h 40m1 stop Denver Intl

$407Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

6:00 am - 8:49 pmONT Ontario-MIA Miami

11h 49m1 stop Chicago O'Hare Intl

5:15 am - 11:55 amMIA Miami-ONT Ontario

9h 40m1 stop Dallas/Fort Worth

$418American Airlines

Tue, Jan 19 - Mon, Jan 25

6:08 am - 5:35 pmONT Ontario-MIA Miami

8h 27m1 stop San Francisco

8:02 am - 12:46 pmMIA Miami-ONT Ontario

7h 44m1 stop Denver Intl

$507United Airlines

Tue, Sep 22 - Tue, Sep 29

Cheap last minute flights

Enter your travel dates to find the best prices.

9:33 am - 11:55 pmONT Ontario-MIA Miami

11h 22m1 stop Houston George Bush Intcntl

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

7h 40m1 stop Denver Intl

$334Frontier

Thu, Aug 27 - Thu, Sep 10

9:33 am - 11:55 pmONT Ontario-MIA Miami

11h 22m1 stop Houston George Bush Intcntl

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

7h 40m1 stop Denver Intl

$341Frontier

Sun, Aug 23 - Tue, Sep 15

6:00 am - 4:52 amONT Ontario-MIA Miami

19h 52m1 stop Denver Intl

12:27 pm - 11:04 amMIA Miami-ONT Ontario

25h 37m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

$471Multiple Airlines

Tue, Aug 25 - Tue, Sep 1

7:05 am - 6:42 pmONT Ontario-MIA Miami

8h 37m1 stop Atlanta Hartsfield-Jackson

2:15 pm - 8:05 pmMIA Miami-ONT Ontario

8h 50m1 stop Atlanta Hartsfield-Jackson

$490Delta

Wed, Aug 26 - Thu, Sep 10

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

9h 47m1 stop Atlanta Hartsfield-Jackson

7:00 am - 12:10 pmMIA Miami-ONT Ontario

8h 10m1 stop Salt Lake City

$502Delta

Tue, Aug 25 - Mon, Dec 7

6:40 am - 8:10 pmONT Ontario-MIA Miami

10h 30m2 stops Phoenix Sky Harbor Intl Nashville Intl

2:20 pm - 8:55 pmMIA Miami-ONT Ontario

9h 35m2 stops Dallas Love Field Phoenix Sky Harbor Intl

$510Southwest

Tue, Aug 25 - Tue, Sep 1

8:40 pm - 11:25 amONT Ontario-MIA Miami

11h 45m2 stops Phoenix Sky Harbor Intl Orlando

5:45 am - 9:15 amMIA Miami-ONT Ontario

6h 30m1 stop Houston Hobby

$522Southwest

Thu, Aug 27 - Mon, Aug 31

10:59 am - 2:33 pmONT Ontario-MIA Miami

24h 34m1 stop Houston George Bush Intcntl

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

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

$543Multiple Airlines

Tue, Aug 25 - Fri, Aug 28

6:08 am - 7:26 pmONT Ontario-MIA Miami

10h 18m1 stop San Francisco

12:17 pm - 12:12 pmMIA Miami-ONT Ontario

26h 55m2 stops Chicago O'Hare Intl San Francisco

$652United Airlines

Thu, Aug 27 - Thu, Sep 10

6:00 am - 7:26 pmONT Ontario-MIA Miami

10h 26m1 stop San Francisco

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

12h 23m2 stops Houston George Bush Intcntl Denver Intl

$660United Airlines

Mon, Aug 24 - Wed, Aug 26

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Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

Frontier

Sep 30

ONT6:15 amOntario

15h 31m

1 stop

MIA12:46 amMiami

Oct 5

MIA11:25 amMiami

39h 22m

2 stops

ONT11:47 pmOntario

$213

Frontier

Oct 22

ONT6:47 pmOntario

19h 45m

1 stop

MIA5:32 pmMiami

Oct 31

MIA7:20 amMiami

9h 20m

1 stop

ONT1:40 pmOntario

$218

Frontier

Sep 30

ONT6:15 amOntario

15h 31m

1 stop

MIA12:46 amMiami

Oct 5

MIA11:25 amMiami

9h 23m

1 stop

ONT5:48 pmOntario

$219

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 9/30

6:15 am-12:46 am

1 stop15h 31m

Miami

Mon 10/5

11:25 am-11:47 pm

2 stops39h 22m

$213

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 10/22

6:47 pm-5:32 pm

1 stop19h 45m

Miami

Sat 10/31

7:20 am-1:40 pm

1 stop9h 20m

$218

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 11/18

11:52 am-12:44 am

1 stop9h 52m

Miami

Sun 11/22

7:30 am-3:05 pm

1 stop10h 35m

$387

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 2/18

12:26 pm-11:30 pm

1 stop8h 04m

Miami

Sat 2/27

6:00 am-1:32 pm

1 stop10h 32m

$397

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 2/18

6:00 am-3:25 pm

1 stop6h 25m

Miami

Sat 2/27

8:45 am-6:44 pm

2 stops12h 59m

$402

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 11/11

5:55 am-4:45 pm

2 stops7h 50m

Miami

Tue 11/17

9:25 am-5:40 pm

2 stops11h 15m

$407

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 9/22

7:45 am-8:15 pm

2 stops9h 30m

Miami

Tue 9/29

2:20 pm-9:00 pm

2 stops9h 40m

$407

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 9/5

3:07 pm-7:56 pm

2 stops25h 49m

Miami

Sat 9/12

5:50 am-10:30 am

1 stop7h 40m

$407

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 1/19

6:00 am-8:49 pm

1 stop11h 49m

Miami

Mon 1/25

5:15 am-11:55 am

1 stop9h 40m

$418

Quickest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 9/22

6:08 am-5:35 pm

1 stop8h 27m

Miami

Tue 9/29

8:02 am-12:46 pm

1 stop7h 44m

$507

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 $301 to $441.
The lowest price recently found on this route was $213.

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 $341. 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 $561. 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 $644.

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 $422 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 $385 on momondo.

How have Ontario to Miami flight prices changed over time?

As of August 2026, prices for Ontario to Miami flights are approximately 79% 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	$95
Fastest flight time	7h 00m
Direct flights	None

The best one-way flight to Miami from Ontario in the past 72 hours is $95. The best round-trip flight deal from Ontario to Miami found on momondo in the last 72 hours is $213.

The fastest flight from Ontario to Miami takes 7h 00m

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 7h 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 2,658 reviews	Search Frontier flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.8 8,519 reviews	Search Delta flights
JetBlue	PriceFrom $213	Free Cancellation	Rating 7.1 3,039 reviews	Search JetBlue flights
American Airlines	PriceFrom $325	Free Cancellation	Rating 7.1 11,989 reviews	Search American Airlines flights
United Airlines	PriceFrom $326	Free Cancellation	Rating 7.4 10,109 reviews	Search United Airlines flights
Southwest	PriceFrom $356	Free Cancellation	Rating 8.0 4,214 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

Doral

Bonita Springs

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 $95

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 9/23. 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

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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

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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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