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 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 is the cheapest airline that flies from Ontario to Miami?

United Airlines 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 has the shortest connection time from Ontario to Miami?

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

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.

$84 Cheap Flights from Ontario to Miami in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Miami

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

10h 01m1 stop Denver Intl

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

7h 40m1 stop Denver Intl

$168Frontier

Mon, Sep 14 - Wed, Sep 16

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

10h 01m1 stop Denver Intl

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

7h 40m1 stop Denver Intl

$168Frontier

Sat, Sep 12 - Thu, Sep 17

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

7h 49m1 stop Phoenix Sky Harbor Intl

8:00 am - 1:31 pmMIA Miami-ONT Ontario

8h 31m1 stop Dallas/Fort Worth

$267American Airlines

Thu, Oct 29 - Tue, Nov 3

12:43 pm - 10:20 pmONT Ontario-MIA Miami

6h 37m1 stop Dallas/Fort Worth

5:00 am - 9:40 amMIA Miami-ONT Ontario

7h 40m1 stop Dallas/Fort Worth

$267American Airlines

Sat, Oct 31 - Sat, Nov 7

5:03 pm - 6:22 amONT Ontario-MIA Miami

10h 19m1 stop Salt Lake City

6:00 am - 11:06 amMIA Miami-ONT Ontario

8h 06m1 stop Atlanta Hartsfield-Jackson

$267Delta

Tue, Oct 6 - Sat, Oct 17

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

5:30 am - 7:20 pmONT Ontario-MIA Miami

10h 50m2 stops Las Vegas Harry Reid Intl Austin Bergstrom

2:35 pm - 9:40 pmMIA Miami-ONT Ontario

10h 05m1 stop Denver Intl

$272Southwest

Thu, Oct 29 - Tue, Nov 3

12:30 pm - 9:55 pmONT Ontario-MIA Miami

6h 25m1 stop Houston Hobby

2:20 pm - 10:05 pmMIA Miami-ONT Ontario

10h 45m2 stops Dallas Love Field Denver Intl

$272Southwest

Tue, Sep 22 - Tue, Sep 29

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

10h 01m1 stop Denver Intl

6:16 pm - 11:16 amMIA Miami-ONT Ontario

20h 00m1 stop Seattle/Tacoma Intl

$285Multiple Airlines

Fri, Sep 11 - Mon, Sep 21

7:12 am - 11:18 pmONT Ontario-MIA Miami

13h 06m2 stops Portland Dallas/Fort Worth

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

7h 40m1 stop Denver Intl

$299Multiple Airlines

Thu, Sep 10 - Mon, Sep 14

Cheap last minute flights

Enter your travel dates to find the best prices.

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

19h 52m1 stop Denver Intl

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

14h 01m1 stop Houston George Bush Intcntl

$313Frontier

Wed, Aug 19 - Wed, Sep 2

10:49 am - 4:52 amONT Ontario-MIA Miami

15h 03m1 stop Denver Intl

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

14h 01m1 stop Houston George Bush Intcntl

$315Frontier

Thu, Aug 20 - Wed, Sep 2

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

8h 37m1 stop Atlanta Hartsfield-Jackson

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

8h 01m1 stop Salt Lake City

$500Delta

Sat, Aug 22 - Sat, Aug 29

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

10h 07m1 stop Atlanta Hartsfield-Jackson

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

8h 01m1 stop Salt Lake City

$505Delta

Fri, Aug 21 - Sat, Aug 29

7:59 pm - 6:39 pmONT Ontario-MIA Miami

19h 40m2 stops Seattle/Tacoma Intl Dallas/Fort Worth

6:00 am - 11:50 pmMIA Miami-ONT Ontario

20h 50m1 stop Denver Intl

$539Multiple Airlines

Wed, Aug 19 - Sun, Aug 23

7:59 pm - 7:56 pmONT Ontario-MIA Miami

20h 57m2 stops Seattle/Tacoma Intl Dallas/Fort Worth

6:00 am - 11:50 pmMIA Miami-ONT Ontario

20h 50m1 stop Denver Intl

$544Multiple Airlines

Thu, Aug 20 - Sun, Aug 23

6:15 am - 6:39 pmONT Ontario-MIA Miami

9h 24m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

5:20 am - 11:43 amMIA Miami-ONT Ontario

9h 23m1 stop Dallas/Fort Worth

$546American Airlines

Sat, Aug 22 - Sun, Aug 30

7:05 am - 6:38 pmONT Ontario-MIA Miami

8h 33m1 stop Dallas/Fort Worth

2:20 pm - 6:15 pmMIA Miami-ONT Ontario

6h 55m1 stop Phoenix Sky Harbor Intl

$572American Airlines

Wed, Aug 19 - Mon, Aug 24

5:15 am - 10:05 pmONT Ontario-MIA Miami

13h 50m2 stops Phoenix Sky Harbor Intl Orlando

2:40 pm - 10:50 pmMIA Miami-ONT Ontario

11h 10m2 stops Austin Bergstrom Las Vegas Harry Reid Intl

$608Southwest

Fri, Aug 21 - Sun, Aug 23

5:15 am - 9:55 pmONT Ontario-MIA Miami

13h 40m2 stops Phoenix Sky Harbor Intl Houston Hobby

2:40 pm - 10:50 pmMIA Miami-ONT Ontario

11h 10m2 stops Austin Bergstrom Las Vegas Harry Reid Intl

$614Southwest

Fri, Aug 21 - Sun, Aug 23

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Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

Frontier

Sep 12

ONT11:45 amOntario

10h 01m

1 stop

MIA12:46 amMiami

Sep 17

MIA5:50 amMiami

7h 40m

1 stop

ONT10:30 amOntario

$168

Frontier

Sep 12

ONT11:45 amOntario

10h 01m

1 stop

MIA12:46 amMiami

Sep 17

MIA11:25 amMiami

9h 23m

1 stop

ONT5:48 pmOntario

$169

Frontier

Sep 7

ONT6:00 amOntario

19h 52m

1 stop

MIA4:52 amMiami

Sep 16

MIA5:50 amMiami

7h 40m

1 stop

ONT10:30 amOntario

$174

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets

Delta

Sep 5

ONT12:00 pmOntario

9h 47m

1 stop

MIA12:47 amMiami

Sep 9

MIA2:15 pmMiami

9h 09m

1 stop

ONT8:24 pmOntario

$267

Delta

Aug 30

ONT10:00 pmOntario

10h 00m

1 stop

MIA11:00 amMiami

Sep 9

MIA6:00 amMiami

8h 05m

1 stop

ONT11:05 amOntario

$435

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Mon 9/14

11:45 am-12:46 am

1 stop10h 01m

Miami

Wed 9/16

5:50 am-10:30 am

1 stop7h 40m

$168

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 9/12

11:45 am-12:46 am

1 stop10h 01m

Miami

Thu 9/17

5:50 am-10:30 am

1 stop7h 40m

$168

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 10/29

1:05 pm-11:54 pm

1 stop7h 49m

Miami

Tue 11/3

8:00 am-1:31 pm

1 stop8h 31m

$267

Quickest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 10/31

12:43 pm-10:20 pm

1 stop6h 37m

Miami

Sat 11/7

5:00 am-9:40 am

1 stop7h 40m

$267

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 10/6

5:03 pm-6:22 am

1 stop10h 19m

Miami

Sat 10/17

6:00 am-11:06 am

1 stop8h 06m

$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

Thu 10/29

5:30 am-7:20 pm

2 stops10h 50m

Miami

Tue 11/3

2:35 pm-9:40 pm

1 stop10h 05m

$272

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 9/22

12:30 pm-9:55 pm

1 stop6h 25m

Miami

Tue 9/29

2:20 pm-10:05 pm

2 stops10h 45m

$272

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Fri 9/11

11:45 am-12:46 am

1 stop10h 01m

Miami

Mon 9/21

6:16 pm-11:16 am

1 stop20h 00m

$285

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 9/10

7:12 am-11:18 pm

2 stops13h 06m

Miami

Mon 9/14

5:50 am-10:30 am

1 stop7h 40m

$299

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 $426.
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 $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 $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 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	$84
Fastest flight time	7h 00m
Direct flights	None

The best one-way flight to Miami from Ontario in the past 72 hours is $84. The best round-trip flight deal from Ontario to Miami found on momondo in the last 72 hours is $168.

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 2,681 reviews	Search Frontier flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.8 8,504 reviews	Search Delta flights
JetBlue	PriceFrom $213	Free Cancellation	Rating 7.1 3,030 reviews	Search JetBlue flights
American Airlines	PriceFrom $325	Free Cancellation	Rating 7.1 11,946 reviews	Search American Airlines flights
United Airlines	PriceFrom $326	Free Cancellation	Rating 7.4 10,106 reviews	Search United Airlines flights
Southwest	PriceFrom $356	Free Cancellation	Rating 8.0 4,217 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 $84

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

Delta flights from Ontario to Miami

Our best Delta 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.

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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