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

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 has the shortest connection time from Ontario to Miami?

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

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

Houston (HOU) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Phoenix (PHX) offer the lowest average round-trip price of $356.

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 November 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.

$98 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

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:00 am - 9:59 amONT Ontario-MIA Miami

43h 59m2 stops Las Vegas Harry Reid Intl Dallas/Fort Worth

10:54 am - 7:44 amMIA Miami-ONT Ontario

23h 50m1 stop Dallas/Fort Worth

$256Frontier

Tue, Dec 8 - Tue, Dec 15

11:02 am - 10:25 amONT Ontario-MIA Miami

20h 23m2 stops Las Vegas Harry Reid Intl Dallas/Fort Worth

11:30 am - 3:26 pmMIA Miami-ONT Ontario

30h 56m1 stop Dallas/Fort Worth

$266Frontier

Sat, Jan 30 - Wed, Feb 3

11:30 am - 9:21 pmONT Ontario-MIA Miami

6h 51m1 stop Denver Intl

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

10h 03m1 stop Portland

$393Multiple Airlines

Thu, Dec 3 - Wed, Dec 9

11:30 am - 9:21 pmONT Ontario-MIA Miami

6h 51m1 stop Denver Intl

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

10h 03m1 stop Portland

$400Multiple Airlines

Thu, Dec 3 - Wed, Dec 9

1:09 pm - 12:46 amONT Ontario-MIA Miami

8h 37m1 stop Atlanta Hartsfield-Jackson

6:34 pm - 11:57 pmMIA Miami-ONT Ontario

8h 23m1 stop Salt Lake City

$436Delta

Wed, Jan 20 - Tue, Jan 26

1:09 pm - 12:46 amONT Ontario-MIA Miami

8h 37m1 stop Atlanta Hartsfield-Jackson

5:32 am - 11:55 amMIA Miami-ONT Ontario

9h 23m1 stop Atlanta Hartsfield-Jackson

$436Delta

Sat, Jan 23 - Wed, Jan 27

6:00 am - 6:20 pmONT Ontario-MIA Miami

9h 20m1 stop Houston George Bush Intcntl

4:59 pm - 9:59 pmMIA Miami-ONT Ontario

8h 00m1 stop Houston George Bush Intcntl

$453United Airlines

Sat, Nov 28 - Wed, Dec 2

6:00 am - 6:20 pmONT Ontario-MIA Miami

9h 20m1 stop Houston George Bush Intcntl

1:05 pm - 9:11 pmMIA Miami-ONT Ontario

11h 06m2 stops Houston George Bush Intcntl Denver Intl

$458United Airlines

Sat, Nov 28 - Wed, Dec 2

1:50 pm - 11:50 pmONT Ontario-MIA Miami

7h 00m1 stop Denver Intl

8:20 am - 4:10 pmMIA Miami-ONT Ontario

10h 50m1 stop Denver Intl

$473Southwest

Sat, Mar 6 - Sat, Mar 13

10:50 am - 10:10 pmONT Ontario-MIA Miami

8h 20m2 stops Las Vegas Harry Reid Intl Dallas Love Field

12:25 pm - 8:25 pmMIA Miami-ONT Ontario

11h 00m1 stop Austin Bergstrom

$479Southwest

Wed, Mar 3 - Mon, Mar 8

Cheap last minute flights

Enter your travel dates to find the best prices.

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

9h 52m1 stop Denver Intl

9:52 pm - 12:48 pmMIA Miami-ONT Ontario

17h 56m1 stop Las Vegas Harry Reid Intl

$364Frontier

Tue, Nov 17 - Wed, Nov 25

6:30 am - 3:12 pmONT Ontario-MIA Miami

29h 42m1 stop Denver Intl

9:52 pm - 7:36 pmMIA Miami-ONT Ontario

24h 44m1 stop Las Vegas Harry Reid Intl

$370Frontier

Wed, Nov 18 - Wed, Nov 25

5:59 pm - 3:43 pmONT Ontario-MIA Miami

18h 44m1 stop Portland

9:52 pm - 7:36 pmMIA Miami-ONT Ontario

24h 44m1 stop Las Vegas Harry Reid Intl

$530Multiple Airlines

Thu, Nov 19 - Wed, Nov 25

6:00 am - 6:20 pmONT Ontario-MIA Miami

9h 20m1 stop Houston George Bush Intcntl

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

11h 36m1 stop San Francisco

$535United Airlines

Thu, Nov 19 - Tue, Dec 1

6:00 am - 3:52 pmONT Ontario-MIA Miami

6h 52m1 stop Houston George Bush Intcntl

1:05 pm - 9:11 pmMIA Miami-ONT Ontario

11h 06m2 stops Houston George Bush Intcntl Denver Intl

$566United Airlines

Thu, Nov 19 - Tue, Dec 1

5:55 am - 8:10 pmONT Ontario-MIA Miami

11h 15m2 stops Phoenix Sky Harbor Intl Nashville Intl

3:50 pm - 11:55 pmMIA Miami-ONT Ontario

11h 05m2 stops Austin Bergstrom Las Vegas Harry Reid Intl

$604Southwest

Thu, Nov 19 - Wed, Nov 25

5:59 pm - 3:43 pmONT Ontario-MIA Miami

18h 44m1 stop Portland

5:45 am - 10:45 amMIA Miami-ONT Ontario

8h 00m1 stop Denver Intl

$626Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

12:18 pm - 10:22 pmONT Ontario-MIA Miami

7h 04m1 stop Atlanta Hartsfield-Jackson

6:00 am - 11:03 amMIA Miami-ONT Ontario

8h 03m1 stop Atlanta Hartsfield-Jackson

$637Delta

Thu, Nov 19 - Sun, Nov 22

5:04 pm - 6:33 amONT Ontario-MIA Miami

10h 29m1 stop Salt Lake City

6:00 am - 11:03 amMIA Miami-ONT Ontario

8h 03m1 stop Atlanta Hartsfield-Jackson

$702Delta

Mon, Nov 16 - Wed, Nov 18

8:35 am - 11:10 pmONT Ontario-MIA Miami

11h 35m2 stops Phoenix Sky Harbor Intl Baltimore/Washington

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

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

$725Southwest

Sun, Nov 15 - Wed, Nov 18

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Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets

Frontier

Dec 8

ONT11:00 amOntario

43h 59m

2 stops

MIA9:59 amMiami

Dec 15

MIA10:54 amMiami

23h 50m

1 stop

ONT7:44 amOntario

$256

Frontier

Jan 30

ONT11:02 amOntario

20h 23m

2 stops

MIA10:25 amMiami

Feb 3

MIA11:30 amMiami

30h 56m

1 stop

ONT3:26 pmOntario

$266

Frontier

Dec 4

ONT8:00 amOntario

22h 59m

2 stops

MIA9:59 amMiami

Dec 7

MIA7:46 amMiami

13h 45m

2 stops

ONT6:31 pmOntario

$270

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Tue 12/8

11:00 am-9:59 am

2 stops43h 59m

Miami

Tue 12/15

10:54 am-7:44 am

1 stop23h 50m

$256

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 1/30

11:02 am-10:25 am

2 stops20h 23m

Miami

Wed 2/3

11:30 am-3:26 pm

1 stop30h 56m

$266

Quickest round-trip

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 12/3

11:30 am-9:21 pm

1 stop6h 51m

Miami

Wed 12/9

4:51 pm-11:54 pm

1 stop10h 03m

$393

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Thu 12/3

11:30 am-9:21 pm

1 stop6h 51m

Miami

Wed 12/9

4:51 pm-11:54 pm

1 stop10h 03m

$400

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 1/20

1:09 pm-12:46 am

1 stop8h 37m

Miami

Tue 1/26

6:34 pm-11:57 pm

1 stop8h 23m

$436

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 1/23

1:09 pm-12:46 am

1 stop8h 37m

Miami

Wed 1/27

5:32 am-11:55 am

1 stop9h 23m

$436

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 11/28

6:00 am-6:20 pm

1 stop9h 20m

Miami

Wed 12/2

4:59 pm-9:59 pm

1 stop8h 00m

$453

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 11/28

6:00 am-6:20 pm

1 stop9h 20m

Miami

Wed 12/2

1:05 pm-9:11 pm

2 stops11h 06m

$458

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Sat 3/6

1:50 pm-11:50 pm

1 stop7h 00m

Miami

Sat 3/13

8:20 am-4:10 pm

1 stop10h 50m

$473

OntarioMiami

ONT Ontario - MIA Miami

ONTMIA

Ontario

Wed 3/3

10:50 am-10:10 pm

2 stops8h 20m

Miami

Mon 3/8

12:25 pm-8:25 pm

1 stop11h 00m

$479

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 $476 to $676.
The lowest price recently found on this route was $256.

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 $579. 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 $653.

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 $522. 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 $624. 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 $454 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 $386 on momondo.

How have Ontario to Miami flight prices changed over time?

As of November 2026, prices for Ontario to Miami flights are approximately 48% 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	$98
Fastest flight time	6h 51m
Direct flights	None

The best one-way flight to Miami from Ontario in the past 72 hours is $98. The best round-trip flight deal from Ontario to Miami found on momondo in the last 72 hours is $256.

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 November 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 15%, and Southwest with 13%.

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 5.5 2,505 reviews	Search Frontier flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.8 8,719 reviews	Search Delta flights
JetBlue	PriceFrom $297	Free Cancellation	Rating 7.1 3,076 reviews	Search JetBlue flights
United Airlines	PriceFrom $326	Free Cancellation	Rating 7.3 10,490 reviews	Search United Airlines flights
American Airlines	PriceFrom $327	Free Cancellation	Rating 7.0 12,234 reviews	Search American Airlines flights
Southwest	PriceFrom $367	Free Cancellation	Rating 8.0 4,219 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

Lauderdale-by-the-Sea

Lake Worth

Deerfield Beach

Jupiter

Homestead

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 $98

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 1/28. 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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