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

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

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.

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 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.

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 September 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.

$109 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.

6:15 am - 12:47 amONT Ontario-MIA Miami

15h 32m1 stop Denver Intl

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

7h 45m1 stop Denver Intl

$218Frontier

Wed, Oct 14 - Tue, Oct 27

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

9h 55m1 stop Denver Intl

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

7h 39m1 stop Denver Intl

$220Frontier

Wed, Oct 14 - Wed, Oct 21

2:22 pm - 12:03 amONT Ontario-MIA Miami

6h 41m1 stop Dallas/Fort Worth

7:00 am - 11:53 amMIA Miami-ONT Ontario

7h 53m1 stop Dallas/Fort Worth

$278American Airlines

Sat, Oct 24 - Sat, Oct 31

2:22 pm - 12:05 amONT Ontario-MIA Miami

6h 43m1 stop Dallas/Fort Worth

7:01 am - 11:52 amMIA Miami-ONT Ontario

7h 51m1 stop Dallas/Fort Worth

$279American Airlines

Wed, Nov 11 - Sat, Nov 14

6:00 am - 3:54 pmONT Ontario-MIA Miami

6h 54m1 stop Houston George Bush Intcntl

5:00 pm - 9:59 pmMIA Miami-ONT Ontario

7h 59m1 stop Houston George Bush Intcntl

$279United Airlines

Tue, Oct 20 - Wed, Oct 21

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

7h 49m1 stop San Francisco

9:00 am - 5:36 pmMIA Miami-ONT Ontario

11h 36m1 stop San Francisco

$279United Airlines

Sat, Dec 5 - Sat, Dec 12

7:00 am - 6:49 pmONT Ontario-MIA Miami

8h 49m1 stop Atlanta Hartsfield-Jackson

6:00 am - 11:27 amMIA Miami-ONT Ontario

8h 27m1 stop Atlanta Hartsfield-Jackson

$279Delta

Tue, Jan 19 - Sat, Jan 23

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

9h 38m1 stop Atlanta Hartsfield-Jackson

6:00 am - 11:08 amMIA Miami-ONT Ontario

8h 08m1 stop Atlanta Hartsfield-Jackson

$279Delta

Wed, Dec 2 - Sat, Dec 5

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

7h 45m2 stops Phoenix Sky Harbor Intl Austin Bergstrom

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

10h 05m1 stop Austin Bergstrom

$285Southwest

Tue, Oct 20 - Wed, Oct 21

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

7h 45m2 stops Phoenix Sky Harbor Intl Austin Bergstrom

12:35 pm - 8:50 pmMIA Miami-ONT Ontario

11h 15m2 stops Chicago Midway Dallas Love Field

$291Southwest

Tue, Oct 20 - Wed, Oct 21

Cheap last minute flights

Enter your travel dates to find the best prices.

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

10h 01m1 stop Denver Intl

5:55 am - 10:30 amMIA Miami-ONT Ontario

7h 35m1 stop Denver Intl

$304Frontier

Tue, Sep 22 - Tue, Oct 6

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

10h 01m1 stop Denver Intl

5:55 am - 10:30 amMIA Miami-ONT Ontario

7h 35m1 stop Denver Intl

$310Frontier

Wed, Sep 23 - Wed, Oct 7

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

10h 01m1 stop Denver Intl

4:51 pm - 11:54 pmMIA Miami-ONT Ontario

10h 03m1 stop Portland

$395Multiple Airlines

Tue, Sep 22 - Wed, Dec 2

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

9h 38m1 stop Atlanta Hartsfield-Jackson

6:04 am - 11:06 amMIA Miami-ONT Ontario

8h 02m1 stop Atlanta Hartsfield-Jackson

$433Delta

Tue, Sep 22 - Tue, Oct 20

12:19 pm - 12:55 amONT Ontario-MIA Miami

9h 36m1 stop Atlanta Hartsfield-Jackson

6:04 am - 11:06 amMIA Miami-ONT Ontario

8h 02m1 stop Atlanta Hartsfield-Jackson

$433Delta

Wed, Sep 23 - Tue, Oct 20

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

6h 55m1 stop Houston George Bush Intcntl

4:01 pm - 10:49 pmMIA Miami-ONT Ontario

9h 48m1 stop Chicago O'Hare Intl

$549United Airlines

Tue, Sep 22 - Tue, Oct 6

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

10h 01m1 stop Denver Intl

6:18 pm - 4:02 pmMIA Miami-ONT Ontario

24h 44m2 stops Seattle/Tacoma Intl Boise Air Term. Gowen Fld

$549Multiple Airlines

Sun, Sep 20 - Fri, Oct 23

9:25 am - 8:58 pmONT Ontario-MIA Miami

8h 33m1 stop San Francisco

9:00 am - 9:11 pmMIA Miami-ONT Ontario

15h 11m2 stops Washington, D.C. Dulles Intl Denver Intl

$553United Airlines

Fri, Sep 25 - Sat, Dec 5

7:00 am - 8:15 pmONT Ontario-MIA Miami

10h 15m2 stops Denver Intl Nashville Intl

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

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

$597Southwest

Wed, Sep 23 - Wed, Sep 30

5:15 am - 5:45 pmONT Ontario-MIA Miami

9h 30m2 stops Phoenix Sky Harbor Intl Denver Intl

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

6h 30m1 stop Houston Hobby

$603Southwest

Fri, Sep 25 - Mon, Sep 28

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Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

Frontier

Oct 14

ONT6:15 amOntario

15h 32m

1 stop

MIA12:47 amMiami

Oct 27

MIA5:50 amMiami

7h 45m

1 stop

ONT10:35 amOntario

$218

Frontier

Oct 6

ONT11:45 amOntario

10h 01m

1 stop

MIA12:46 amMiami

Oct 13

MIA5:50 amMiami

7h 39m

1 stop

ONT10:29 amOntario

$220

Frontier

Oct 24

ONT11:52 amOntario

9h 55m

1 stop

MIA12:47 amMiami

Oct 28

MIA5:50 amMiami

7h 45m

1 stop

ONT10:35 amOntario

$231

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets

Delta

Jan 16

ONT12:00 pmOntario

9h 52m

1 stop

MIA12:52 amMiami

Jan 20

MIA6:43 pmMiami

8h 05m

1 stop

ONT11:48 pmOntario

$279

Delta

Jan 5

ONT6:00 amOntario

8h 23m

1 stop

MIA5:23 pmMiami

Jan 7

MIA7:00 amMiami

7h 27m

1 stop

ONT11:27 amOntario

$298

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 10/14

6:15 am-12:47 am

1 stop15h 32m

Miami

Tue 10/27

5:50 am-10:35 am

1 stop7h 45m

$218

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 10/14

11:52 am-12:47 am

1 stop9h 55m

Miami

Wed 10/21

5:50 am-10:29 am

1 stop7h 39m

$220

Quickest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 10/24

2:22 pm-12:03 am

1 stop6h 41m

Miami

Sat 10/31

7:00 am-11:53 am

1 stop7h 53m

$278

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 11/11

2:22 pm-12:05 am

1 stop6h 43m

Miami

Sat 11/14

7:01 am-11:52 am

1 stop7h 51m

$279

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 10/20

6:00 am-3:54 pm

1 stop6h 54m

Miami

Wed 10/21

5:00 pm-9:59 pm

1 stop7h 59m

$279

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 12/5

6:00 am-4:49 pm

1 stop7h 49m

Miami

Sat 12/12

9:00 am-5:36 pm

1 stop11h 36m

$279

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 1/19

7:00 am-6:49 pm

1 stop8h 49m

Miami

Sat 1/23

6:00 am-11:27 am

1 stop8h 27m

$279

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 12/2

12:20 pm-12:58 am

1 stop9h 38m

Miami

Sat 12/5

6:00 am-11:08 am

1 stop8h 08m

$279

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 10/20

6:10 am-4:55 pm

2 stops7h 45m

Miami

Wed 10/21

11:30 am-6:35 pm

1 stop10h 05m

$285

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 10/20

6:10 am-4:55 pm

2 stops7h 45m

Miami

Wed 10/21

12:35 pm-8:50 pm

2 stops11h 15m

$291

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 $344 to $472.
The lowest price recently found on this route was $218.

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 $567. 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 $457. 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 $612. 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 $430 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 $368 on momondo.

How have Ontario to Miami flight prices changed over time?

As of September 2026, prices for Ontario to Miami flights are approximately 4% 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	$109
Fastest flight time	6h 51m
Direct flights	None

The best one-way flight to Miami from Ontario in the past 72 hours is $109. The best round-trip flight deal from Ontario to Miami found on momondo in the last 72 hours is $218.

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 September 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 United Airlines with 17%, Frontier with 17%, 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 2,594 reviews	Search Frontier flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.8 8,591 reviews	Search Delta flights
JetBlue	PriceFrom $297	Free Cancellation	Rating 7.1 3,032 reviews	Search JetBlue flights
United Airlines	PriceFrom $326	Free Cancellation	Rating 7.4 10,231 reviews	Search United Airlines flights
American Airlines	PriceFrom $326	Free Cancellation	Rating 7.0 12,085 reviews	Search American Airlines flights
Southwest	PriceFrom $356	Free Cancellation	Rating 8.0 4,196 reviews	Search Southwest flights

Miami Beach

Islamorada

Hollywood

Marco Island

Key Largo

Marathon

Palm Beach

Pompano Beach

Delray Beach

Miami Springs

Dania Beach

Doral

Sunny Isles Beach

Bonita Springs

Boynton Beach

Lake Worth

Jupiter

Lauderdale-by-the-Sea

Deerfield Beach

Plantation

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 $109

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 10/6. 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.

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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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