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Cheap flights from Ontario to Miami from $113

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 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Miami

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:33 am - 11:55 pm
ONT
-
MIA
11h 22m
1 stop
Frontier Logo
6:50 am - 11:50 pm
MIA
-
ONT
20h 00m
2 stops
$227Frontier
Thu, Aug 20 - Thu, Aug 27
Frontier Logo
6:00 am - 12:21 am
ONT
-
MIA
39h 21m
2 stops
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$228Frontier
Tue, Aug 11 - Tue, Aug 18
Frontier Logo
9:36 am - 12:21 am
ONT
-
MIA
11h 45m
1 stop
Frontier Logo
8:00 am - 11:50 pm
MIA
-
ONT
42h 50m
2 stops
$231Frontier
Thu, Aug 13 - Tue, Aug 18
Frontier Logo
6:00 am - 2:33 pm
ONT
-
MIA
29h 33m
2 stops
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$232Frontier
Tue, Aug 18 - Wed, Sep 2
Frontier Logo
10:59 am - 2:33 pm
ONT
-
MIA
24h 34m
1 stop
Frontier Logo
8:00 am - 11:50 pm
MIA
-
ONT
42h 50m
2 stops
$233Frontier
Tue, Aug 18 - Tue, Sep 1
Frontier Logo
9:33 am - 11:55 pm
ONT
-
MIA
11h 22m
1 stop
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$234Frontier
Mon, Aug 24 - Tue, Sep 1
Frontier Logo
9:36 am - 12:21 am
ONT
-
MIA
11h 45m
1 stop
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$235Frontier
Tue, Aug 11 - Tue, Aug 18
Frontier Logo
9:36 am - 12:21 am
ONT
-
MIA
11h 45m
1 stop
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$238Frontier
Thu, Aug 13 - Tue, Aug 18
Frontier Logo
10:59 am - 2:33 pm
ONT
-
MIA
24h 34m
1 stop
Frontier Logo
8:00 am - 7:01 pm
MIA
-
ONT
14h 01m
1 stop
$239Frontier
Tue, Aug 18 - Wed, Sep 2
Frontier Logo
9:36 am - 12:21 am
ONT
-
MIA
11h 45m
1 stop
Frontier Logo
6:30 am - 11:50 pm
MIA
-
ONT
20h 20m
2 stops
$241Frontier
Wed, Aug 12 - Sat, Aug 15

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Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Aug 20
ONT9:33 amOntario
11h 22m
1 stop
MIA11:55 pmMiami
Aug 27
MIA6:50 amMiami
20h 00m
2 stops
ONT11:50 pmOntario
$227
Frontier
Aug 11
ONT6:00 amOntario
39h 21m
2 stops
MIA12:21 amMiami
Aug 18
MIA8:00 amMiami
14h 01m
1 stop
ONT7:01 pmOntario
$228
Frontier
Aug 13
ONT9:36 amOntario
11h 45m
1 stop
MIA12:21 amMiami
Aug 18
MIA8:00 amMiami
42h 50m
2 stops
ONT11:50 pmOntario
$231

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Miami that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 18, 2026.
Use the filters below to find and compare flights from Ontario to Miami that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 8/20

9:33 am-11:55 pm

1 stop11h 22m

Miami

Thu 8/27

6:50 am-11:50 pm

2 stops20h 00m

$227

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 8/11

6:00 am-12:21 am

2 stops39h 21m

Miami

Tue 8/18

8:00 am-7:01 pm

1 stop14h 01m

$228

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 8/13

9:36 am-12:21 am

1 stop11h 45m

Miami

Tue 8/18

8:00 am-11:50 pm

2 stops42h 50m

$231

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 8/18

6:00 am-2:33 pm

2 stops29h 33m

Miami

Wed 9/2

8:00 am-7:01 pm

1 stop14h 01m

$232

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 8/18

10:59 am-2:33 pm

1 stop24h 34m

Miami

Tue 9/1

8:00 am-11:50 pm

2 stops42h 50m

$233
Quickest round-trip

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 8/24

9:33 am-11:55 pm

1 stop11h 22m

Miami

Tue 9/1

8:00 am-7:01 pm

1 stop14h 01m

$234

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 8/11

9:36 am-12:21 am

1 stop11h 45m

Miami

Tue 8/18

8:00 am-7:01 pm

1 stop14h 01m

$235

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 8/13

9:36 am-12:21 am

1 stop11h 45m

Miami

Tue 8/18

8:00 am-7:01 pm

1 stop14h 01m

$238

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 8/18

10:59 am-2:33 pm

1 stop24h 34m

Miami

Wed 9/2

8:00 am-7:01 pm

1 stop14h 01m

$239

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 8/12

9:36 am-12:21 am

1 stop11h 45m

Miami

Sat 8/15

6:30 am-11:50 pm

2 stops20h 20m

$241

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Miami from

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

What is the typical price of a round-trip flight between Ontario and Miami?

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 $351. 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 $366.

What is the cheapest day to depart on your flight to Miami?

The cheapest day to depart from Ontario to Miami is on a Tuesday when prices can be found for as low as $559. 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 $637.

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 $499. 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 $600. 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 $413 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 $352 on momondo.

How have Ontario to Miami flight prices changed over time?

As of July 2026, prices for Ontario to Miami flights are approximately 1% 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 50m

Direct flights

None
The fastest flight from Ontario to Miami takes 6h 50m
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 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?

  • 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?

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
FrontierPriceFrom $138Free CancellationRating
5.6
2,794 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.8
8,476 reviews
Search Delta flights
JetBluePriceFrom $213Free CancellationRating
7.1
3,012 reviews
Search JetBlue flights
American AirlinesPriceFrom $316Free CancellationRating
7.1
11,825 reviews
Search American Airlines flights
United AirlinesPriceFrom $326Free CancellationRating
7.4
10,006 reviews
Search United Airlines flights
SouthwestPriceFrom $356Free CancellationRating
8.0
4,243 reviews
Search Southwest flights

Traveling to a place near Miami?

Book flights to Miami if you plan to visit one of these locations
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
Jupiter
Lake Worth
Boynton Beach
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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