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Cheap flights from Ontario to Miami from $61

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 2/4. 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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0 bags

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Find the cheapest flights from Ontario to Miami

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:00 am - 5:19 amONT-MIA
19h 19m1 stop
Frontier Logo
6:25 am - 10:39 pmMIA-ONT
19h 14m1 stop
$127Frontier
Find Deal
ter, jan 20 - ter, jan 27
Frontier Logo
7:00 am - 11:57 amONT-MIA
25h 57m1 stop
Frontier Logo
9:25 am - 10:59 pmMIA-ONT
16h 34m1 stop
$133Frontier
Find Deal
sáb, jan 10 - sáb, jan 17
Frontier Logo
6:20 am - 11:59 pmONT-MIA
14h 39m1 stop
Frontier Logo
6:18 pm - 11:24 pmMIA-ONT
8h 06m1 stop
$134Frontier
Find Deal
sex, jan 23 - sáb, jan 31
Multiple Airlines Logo
2:59 pm - 8:23 amONT-MIA
14h 24m1 stop
Multiple Airlines Logo
9:59 pm - 4:33 pmMIA-ONT
21h 34m1 stop
$135Multiple Airlines
Find Deal
seg, dez 8 - sáb, dez 13
Multiple Airlines Logo
2:59 pm - 8:23 amONT-MIA
14h 24m1 stop
Multiple Airlines Logo
9:59 pm - 4:33 pmMIA-ONT
21h 34m1 stop
$137Multiple Airlines
Find Deal
seg, dez 8 - sáb, dez 13
Frontier Logo
3:20 pm - 5:19 amONT-MIA
10h 59m1 stop
Frontier Logo
6:00 am - 11:09 amMIA-ONT
8h 09m1 stop
$138Frontier
Find Deal
seg, dez 8 - qui, dez 11
Frontier Logo
12:04 pm - 5:19 amONT-MIA
14h 15m1 stop
Frontier Logo
6:00 am - 11:09 amMIA-ONT
8h 09m1 stop
$139Frontier
Find Deal
qui, dez 4 - qui, dez 11
Frontier Logo
3:20 pm - 5:19 amONT-MIA
10h 59m1 stop
Frontier Logo
7:05 am - 5:22 pmMIA-ONT
13h 17m1 stop
$141Frontier
Find Deal
sex, dez 12 - qui, dez 18
Frontier Logo
3:20 pm - 5:19 amONT-MIA
10h 59m1 stop
Frontier Logo
6:00 am - 3:06 pmMIA-ONT
12h 06m1 stop
$142Frontier
Find Deal
sex, dez 12 - dom, dez 14
Frontier Logo
6:17 pm - 5:35 amONT-MIA
8h 18m1 stop
Frontier Logo
7:05 am - 5:15 pmMIA-ONT
13h 10m1 stop
$144Frontier
Find Deal
qui, dez 18 - qua, dez 24

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Jan 20
ONT7:00 amOntario
19h 19m
1 stop
MIA5:19 amMiami
Jan 27
MIA6:25 amMiami
19h 14m
1 stop
ONT10:39 pmOntario
$127
Find similar
Frontier
Jan 10
ONT7:00 amOntario
25h 57m
1 stop
MIA11:57 amMiami
Jan 17
MIA9:25 amMiami
16h 34m
1 stop
ONT10:59 pmOntario
$133
Find similar
Frontier
Jan 23
ONT6:20 amOntario
14h 39m
1 stop
MIA11:59 pmMiami
Jan 31
MIA6:18 pmMiami
8h 06m
1 stop
ONT11:24 pmOntario
$134
Find similar

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 novembro 13, 2025.
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

OntarioMiami

ONT - MIA

ONTMIA

Ontario

ter 1/20

7:00 am-5:19 am

1 stop19h 19m

Miami

ter 1/27

6:25 am-10:39 pm

1 stop19h 14m

$127

OntarioMiami

ONT - MIA

ONTMIA

Ontario

sáb 1/10

7:00 am-11:57 am

1 stop25h 57m

Miami

sáb 1/17

9:25 am-10:59 pm

1 stop16h 34m

$133

OntarioMiami

ONT - MIA

ONTMIA

Ontario

sex 1/23

6:20 am-11:59 pm

1 stop14h 39m

Miami

sáb 1/31

6:18 pm-11:24 pm

1 stop8h 06m

$134

OntarioMiami

ONT - MIA

ONTMIA

Ontario

seg 12/8

2:59 pm-8:23 am

1 stop14h 24m

Miami

sáb 12/13

9:59 pm-4:33 pm

1 stop21h 34m

$135

OntarioMiami

ONT - MIA

ONTMIA

Ontario

seg 12/8

2:59 pm-8:23 am

1 stop14h 24m

Miami

sáb 12/13

9:59 pm-4:33 pm

1 stop21h 34m

$137

OntarioMiami

ONT - MIA

ONTMIA

Ontario

seg 12/8

3:20 pm-5:19 am

1 stop10h 59m

Miami

qui 12/11

6:00 am-11:09 am

1 stop8h 09m

$138

OntarioMiami

ONT - MIA

ONTMIA

Ontario

qui 12/4

12:04 pm-5:19 am

1 stop14h 15m

Miami

qui 12/11

6:00 am-11:09 am

1 stop8h 09m

$139

OntarioMiami

ONT - MIA

ONTMIA

Ontario

sex 12/12

3:20 pm-5:19 am

1 stop10h 59m

Miami

qui 12/18

7:05 am-5:22 pm

1 stop13h 17m

$141

OntarioMiami

ONT - MIA

ONTMIA

Ontario

sex 12/12

3:20 pm-5:19 am

1 stop10h 59m

Miami

dom 12/14

6:00 am-3:06 pm

1 stop12h 06m

$142

OntarioMiami

ONT - MIA

ONTMIA

Ontario

qui 12/18

6:17 pm-5:35 am

1 stop8h 18m

Miami

qua 12/24

7:05 am-5:15 pm

1 stop13h 10m

$144

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 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 $336. 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 $356.

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

The cheapest day to depart from Ontario to Miami is on a Saturday when prices can be found for as low as $535. 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 $585.

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 $479. Flying to Miami in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $596. 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 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 $334 on momondo.

How have Ontario to Miami flight prices changed over time?

As of November 2025, 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

Direct flights

None
There are no direct flights from Ontario to Miami. There are no popular flight routes from Ontario to Miami.
Search flight deals

  • 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 57m.

  • 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 $150Free CancellationRating
5.8
3,109 reviews
Search Frontier flights
DeltaPriceFrom $262Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $294Free CancellationRating
7.4
9,017 reviews
Search United Airlines flights
American AirlinesPriceFrom $320Free CancellationRating
7.2
11,051 reviews
Search American Airlines flights
SouthwestPriceFrom $371Free CancellationRating
8.0
4,242 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
Key Largo
Hollywood
Islamorada
Marco Island
Marathon
Palm Beach
Delray Beach
Pompano Beach
Jupiter
Sunny Isles Beach
Dania Beach
Lake Worth
Bonita Springs
Deerfield Beach
Boynton Beach
Miramar
Doral
Miami Gardens
Lauderdale-by-the-Sea

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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