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Cheap flights from Ontario to Miami from $66

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 2/10. 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
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
6:10 am - 5:14 am
ONT
-
MIA
20h 04m1 stop
Frontier Logo
6:45 am - 11:59 pm
MIA
-
ONT
20h 14m1 stop
$149Frontier
Mon, Feb 23 - Thu, Feb 26
Frontier Logo
7:56 pm - 1:59 am
ONT
-
MIA
27h 03m1 stop
Frontier Logo
5:30 am - 11:24 pm
MIA
-
ONT
20h 54m2 stops
$158Frontier
Sun, Jan 18 - Sat, Jan 24
Frontier Logo
6:20 am - 4:37 pm
ONT
-
MIA
7h 17m1 stop
Frontier Logo
6:18 pm - 3:07 pm
MIA
-
ONT
23h 49m1 stop
$165Frontier
Mon, Feb 2 - Tue, Feb 3
Frontier Logo
6:20 am - 4:37 pm
ONT
-
MIA
7h 17m1 stop
Frontier Logo
1:00 pm - 12:43 pm
MIA
-
ONT
26h 43m1 stop
$166Frontier
Mon, Jan 26 - Thu, Jan 29
Multiple Airlines Logo
7:00 am - 6:07 pm
ONT
-
MIA
32h 07m2 stops
Multiple Airlines Logo
9:26 pm - 1:48 pm
MIA
-
ONT
19h 22m1 stop
$174Multiple Airlines
Sat, Jan 10 - Sat, Jan 17
Frontier Logo
1:46 pm - 7:33 pm
ONT
-
MIA
26h 47m1 stop
Frontier Logo
7:00 am - 12:20 am
MIA
-
ONT
20h 20m1 stop
$177Frontier
Fri, Jan 23 - Mon, Jan 26
Frontier Logo
7:15 am - 5:12 pm
ONT
-
MIA
6h 57m1 stop
Frontier Logo
5:47 pm - 12:20 am
MIA
-
ONT
9h 33m1 stop
$182Frontier
Wed, Jan 21 - Thu, Jan 22
Frontier Logo
7:00 am - 11:57 am
ONT
-
MIA
25h 57m1 stop
Frontier Logo
10:07 am - 10:59 pm
MIA
-
ONT
15h 52m1 stop
$183Frontier
Wed, Jan 7 - Wed, Jan 14
Frontier Logo
6:20 am - 4:37 pm
ONT
-
MIA
7h 17m1 stop
Frontier Logo
5:47 pm - 12:20 am
MIA
-
ONT
9h 33m1 stop
$186Frontier
Mon, Jan 26 - Thu, Jan 29
Frontier Logo
1:46 pm - 7:33 pm
ONT
-
MIA
26h 47m1 stop
Frontier Logo
6:18 pm - 11:24 pm
MIA
-
ONT
8h 06m1 stop
$187Frontier
Fri, Jan 23 - Sat, Jan 31

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets
Delta
Jan 17
ONT3:30 pmOntario
21h 57m
1 stop
MIA4:27 pmMiami
Feb 10
MIA5:37 pmMiami
32h 07m
1 stop
ONT10:44 pmOntario
$247
Find similar
Delta
Dec 16
ONT10:25 pmOntario
15h 13m
2 stops
MIA4:38 pmMiami
Dec 23
MIA2:01 pmMiami
8h 49m
1 stop
ONT7:50 pmOntario
$472
Find similar
Delta
Dec 16
ONT6:00 amOntario
12h 50m
2 stops
MIA9:50 pmMiami
Dec 17
MIA8:10 amMiami
14h 29m
2 stops
ONT7:39 pmOntario
$527
Find similar

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Feb 23
ONT6:10 amOntario
20h 04m
1 stop
MIA5:14 amMiami
Feb 26
MIA6:45 amMiami
20h 14m
1 stop
ONT11:59 pmOntario
$149
Find similar
Frontier
Jan 18
ONT7:56 pmOntario
27h 03m
1 stop
MIA1:59 amMiami
Jan 24
MIA5:30 amMiami
20h 54m
2 stops
ONT11:24 pmOntario
$158
Find similar
Frontier
Feb 2
ONT6:20 amOntario
7h 17m
1 stop
MIA4:37 pmMiami
Feb 3
MIA6:18 pmMiami
23h 49m
1 stop
ONT3:07 pmOntario
$165
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 December 11, 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

Mon 2/23

6:10 am-5:14 am

1 stop20h 04m

Miami

Thu 2/26

6:45 am-11:59 pm

1 stop20h 14m

$149

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sun 1/18

7:56 pm-1:59 am

1 stop27h 03m

Miami

Sat 1/24

5:30 am-11:24 pm

2 stops20h 54m

$158

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 2/2

6:20 am-4:37 pm

1 stop7h 17m

Miami

Tue 2/3

6:18 pm-3:07 pm

1 stop23h 49m

$165

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 1/26

6:20 am-4:37 pm

1 stop7h 17m

Miami

Thu 1/29

1:00 pm-12:43 pm

1 stop26h 43m

$166

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 1/10

7:00 am-6:07 pm

2 stops32h 07m

Miami

Sat 1/17

9:26 pm-1:48 pm

1 stop19h 22m

$174

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 1/23

1:46 pm-7:33 pm

1 stop26h 47m

Miami

Mon 1/26

7:00 am-12:20 am

1 stop20h 20m

$177

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 1/21

7:15 am-5:12 pm

1 stop6h 57m

Miami

Thu 1/22

5:47 pm-12:20 am

1 stop9h 33m

$182

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 1/7

7:00 am-11:57 am

1 stop25h 57m

Miami

Wed 1/14

10:07 am-10:59 pm

1 stop15h 52m

$183

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 1/26

6:20 am-4:37 pm

1 stop7h 17m

Miami

Thu 1/29

5:47 pm-12:20 am

1 stop9h 33m

$186

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 1/23

1:46 pm-7:33 pm

1 stop26h 47m

Miami

Sat 1/31

6:18 pm-11:24 pm

1 stop8h 06m

$187

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 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 $532. 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 $583.

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 $419 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 $345 on momondo.

How have Ontario to Miami flight prices changed over time?

As of December 2025, prices for Ontario to Miami flights are approximately 3% 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 35m

Direct flights

None
The fastest flight from Ontario to Miami takes 6h 35m
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 35m.

  • 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
3,084 reviews
Search Frontier flights
DeltaPriceFrom $262Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $301Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $319Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
SouthwestPriceFrom $356Free CancellationRating
7.9
4,253 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
Doral
Miramar
Lauderdale-by-the-Sea
Miami Gardens

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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