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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 2/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
Multiple Airlines Logo
7:15 am - 5:48 am
ONT
-
MIA
19h 33m1 stop
Multiple Airlines Logo
9:26 pm - 2:27 pm
MIA
-
ONT
20h 01m1 stop
$153Multiple Airlines
Tue, Jan 13 - Wed, Jan 21
Frontier Logo
7:15 am - 5:12 pm
ONT
-
MIA
6h 57m1 stop
Frontier Logo
5:47 pm - 3:07 pm
MIA
-
ONT
24h 20m1 stop
$165Frontier
Tue, Jan 27 - Tue, Feb 3
Frontier Logo
7:15 am - 5:12 pm
ONT
-
MIA
6h 57m1 stop
Frontier Logo
6:18 pm - 3:07 pm
MIA
-
ONT
23h 49m1 stop
$166Frontier
Tue, Jan 20 - Tue, Jan 27
Multiple Airlines Logo
8:21 am - 2:56 pm
ONT
-
MIA
27h 35m1 stop
Multiple Airlines Logo
9:18 pm - 1:11 pm
MIA
-
ONT
42h 53m2 stops
$173Multiple Airlines
Sat, Feb 21 - Sat, Feb 28
Multiple Airlines Logo
7:15 am - 5:48 am
ONT
-
MIA
19h 33m1 stop
Multiple Airlines Logo
1:01 pm - 10:09 am
MIA
-
ONT
24h 08m2 stops
$175Multiple Airlines
Tue, Jan 13 - Wed, Jan 21
Frontier Logo
7:15 am - 5:12 pm
ONT
-
MIA
6h 57m1 stop
Frontier Logo
6:18 pm - 11:24 pm
MIA
-
ONT
8h 06m1 stop
$182Frontier
Sat, Jan 24 - Sat, Jan 31
Frontier Logo
7:00 am - 5:19 pm
ONT
-
MIA
7h 19m1 stop
Frontier Logo
3:11 pm - 11:14 pm
MIA
-
ONT
11h 03m1 stop
$183Frontier
Tue, Jan 6 - Sat, Jan 10
Multiple Airlines Logo
7:56 pm - 1:59 am
ONT
-
MIA
27h 03m1 stop
Multiple Airlines Logo
9:26 pm - 2:27 pm
MIA
-
ONT
20h 01m1 stop
$184Multiple Airlines
Sun, Jan 18 - Sun, Jan 25
Frontier Logo
8:35 am - 5:48 am
ONT
-
MIA
18h 13m1 stop
Frontier Logo
6:25 am - 11:59 pm
MIA
-
ONT
20h 34m1 stop
$187Frontier
Tue, Feb 24 - Sat, Feb 28
Frontier Logo
7:15 am - 8:59 pm
ONT
-
MIA
10h 44m1 stop
Frontier Logo
9:10 pm - 1:11 pm
MIA
-
ONT
43h 01m2 stops
$193Frontier
Wed, Feb 4 - Thu, Feb 12

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Jan 27
ONT7:15 amOntario
6h 57m
1 stop
MIA5:12 pmMiami
Feb 3
MIA5:47 pmMiami
24h 20m
1 stop
ONT3:07 pmOntario
$165
Find similar
Frontier
Jan 20
ONT7:15 amOntario
6h 57m
1 stop
MIA5:12 pmMiami
Jan 27
MIA6:18 pmMiami
23h 49m
1 stop
ONT3:07 pmOntario
$166
Find similar
Frontier
Jan 24
ONT7:15 amOntario
6h 57m
1 stop
MIA5:12 pmMiami
Jan 31
MIA6:18 pmMiami
8h 06m
1 stop
ONT11:24 pmOntario
$182
Find similar

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets
Delta
Jan 13
ONT3:30 pmOntario
21h 57m
1 stop
MIA4:27 pmMiami
Jan 21
MIA5:37 pmMiami
32h 14m
1 stop
ONT10:51 pmOntario
$247
Find similar
Delta
Feb 24
ONT10:20 pmOntario
9h 16m
1 stop
MIA10:36 amMiami
Mar 11
MIA6:00 amMiami
8h 40m
1 stop
ONT11:40 amOntario
$263
Find similar
Delta
Jan 20
ONT10:30 pmOntario
9h 10m
1 stop
MIA10:40 amMiami
Jan 28
MIA12:02 pmMiami
12h 03m
2 stops
ONT9:05 pmOntario
$268
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 23, 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

Tue 1/13

7:15 am-5:48 am

1 stop19h 33m

Miami

Wed 1/21

9:26 pm-2:27 pm

1 stop20h 01m

$153

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 1/27

7:15 am-5:12 pm

1 stop6h 57m

Miami

Tue 2/3

5:47 pm-3:07 pm

1 stop24h 20m

$165

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 1/20

7:15 am-5:12 pm

1 stop6h 57m

Miami

Tue 1/27

6:18 pm-3:07 pm

1 stop23h 49m

$166

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 2/21

8:21 am-2:56 pm

1 stop27h 35m

Miami

Sat 2/28

9:18 pm-1:11 pm

2 stops42h 53m

$173

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 1/13

7:15 am-5:48 am

1 stop19h 33m

Miami

Wed 1/21

1:01 pm-10:09 am

2 stops24h 08m

$175

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 1/24

7:15 am-5:12 pm

1 stop6h 57m

Miami

Sat 1/31

6:18 pm-11:24 pm

1 stop8h 06m

$182

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 1/6

7:00 am-5:19 pm

1 stop7h 19m

Miami

Sat 1/10

3:11 pm-11:14 pm

1 stop11h 03m

$183

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sun 1/18

7:56 pm-1:59 am

1 stop27h 03m

Miami

Sun 1/25

9:26 pm-2:27 pm

1 stop20h 01m

$184

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 2/24

8:35 am-5:48 am

1 stop18h 13m

Miami

Sat 2/28

6:25 am-11:59 pm

1 stop20h 34m

$187

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 2/4

7:15 am-8:59 pm

1 stop10h 44m

Miami

Thu 2/12

9:10 pm-1:11 pm

2 stops43h 01m

$193

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 $531. 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 $574.

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 $588. 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 30m

Direct flights

None
The fastest flight from Ontario to Miami takes 6h 30m
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 30m.

  • 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
3,075 reviews
Search Frontier flights
DeltaPriceFrom $262Free CancellationRating
7.9
8,014 reviews
Search Delta flights
United AirlinesPriceFrom $301Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights
American AirlinesPriceFrom $318Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
SouthwestPriceFrom $356Free CancellationRating
8.0
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
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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