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Cheap flights from Ontario to Miami from $73

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 2/21. 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
8:35 am - 5:48 am
ONT
-
MIA
18h 13m
1 stop
Frontier Logo
6:25 am - 9:34 pm
MIA
-
ONT
18h 09m
1 stop
$159Frontier
Tue, Feb 24 - Wed, Mar 4
Multiple Airlines Logo
6:00 am - 8:51 pm
ONT
-
MIA
11h 51m
2 stops
Multiple Airlines Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$168Multiple Airlines
Sat, Feb 28 - Sat, Mar 7
Frontier Logo
7:17 pm - 10:28 am
ONT
-
MIA
12h 11m
2 stops
Frontier Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$170Frontier
Wed, Mar 4 - Sat, Mar 7
Frontier Logo
8:59 pm - 7:32 am
ONT
-
MIA
7h 33m
1 stop
Frontier Logo
8:42 am - 6:34 pm
MIA
-
ONT
12h 52m
1 stop
$182Frontier
Thu, Apr 16 - Tue, Apr 21
Frontier Logo
8:35 am - 5:48 am
ONT
-
MIA
18h 13m
1 stop
Frontier Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$183Frontier
Tue, Feb 24 - Sat, Mar 7
Frontier Logo
6:20 am - 5:49 am
ONT
-
MIA
20h 29m
1 stop
Frontier Logo
8:42 am - 6:34 pm
MIA
-
ONT
12h 52m
1 stop
$193Frontier
Tue, Apr 7 - Tue, Apr 14
Frontier Logo
7:30 am - 5:14 am
ONT
-
MIA
18h 44m
1 stop
Frontier Logo
5:45 am - 9:34 am
MIA
-
ONT
30h 49m
1 stop
$195Frontier
Wed, Feb 18 - Wed, Feb 25
Frontier Logo
7:18 pm - 7:32 am
ONT
-
MIA
9h 14m
1 stop
Frontier Logo
7:50 am - 11:55 pm
MIA
-
ONT
19h 05m
1 stop
$197Frontier
Sat, May 9 - Wed, May 13
Frontier Logo
8:26 am - 6:08 pm
ONT
-
MIA
6h 42m
1 stop
Frontier Logo
11:34 am - 4:38 pm
MIA
-
ONT
8h 04m
1 stop
$200Frontier
Thu, Apr 23 - Mon, Apr 27
Frontier Logo
6:10 am - 5:14 am
ONT
-
MIA
20h 04m
1 stop
Frontier Logo
6:45 am - 11:59 pm
MIA
-
ONT
20h 14m
1 stop
$205Frontier
Mon, Mar 2 - Thu, Mar 5

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Feb 24
ONT8:35 amOntario
18h 13m
1 stop
MIA5:48 amMiami
Mar 4
MIA6:25 amMiami
18h 09m
1 stop
ONT9:34 pmOntario
$159
Frontier
Mar 4
ONT7:17 pmOntario
12h 11m
2 stops
MIA10:28 amMiami
Mar 7
MIA5:50 amMiami
21h 09m
1 stop
ONT11:59 pmOntario
$170
Frontier
Apr 16
ONT8:59 pmOntario
7h 33m
1 stop
MIA7:32 amMiami
Apr 21
MIA8:42 amMiami
12h 52m
1 stop
ONT6:34 pmOntario
$182

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets
Delta
Feb 16
ONT10:20 pmOntario
9h 16m
1 stop
MIA10:36 amMiami
Feb 19
MIA6:43 amMiami
8h 24m
1 stop
ONT12:07 pmOntario
$337
Delta
Feb 16
ONT5:00 pmOntario
9h 28m
1 stop
MIA5:28 amMiami
Feb 27
MIA6:43 amMiami
8h 24m
1 stop
ONT12:07 pmOntario
$358
Delta
Feb 16
ONT5:00 pmOntario
9h 28m
1 stop
MIA5:28 amMiami
Feb 27
MIA7:40 amMiami
16h 25m
2 stops
ONT9:05 pmOntario
$360

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 February 3, 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

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 2/24

8:35 am-5:48 am

1 stop18h 13m

Miami

Wed 3/4

6:25 am-9:34 pm

1 stop18h 09m

$159

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 2/28

6:00 am-8:51 pm

2 stops11h 51m

Miami

Sat 3/7

5:50 am-11:59 pm

1 stop21h 09m

$168

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 3/4

7:17 pm-10:28 am

2 stops12h 11m

Miami

Sat 3/7

5:50 am-11:59 pm

1 stop21h 09m

$170

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 4/16

8:59 pm-7:32 am

1 stop7h 33m

Miami

Tue 4/21

8:42 am-6:34 pm

1 stop12h 52m

$182

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 2/24

8:35 am-5:48 am

1 stop18h 13m

Miami

Sat 3/7

5:50 am-11:59 pm

1 stop21h 09m

$183

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 4/7

6:20 am-5:49 am

1 stop20h 29m

Miami

Tue 4/14

8:42 am-6:34 pm

1 stop12h 52m

$193

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 2/18

7:30 am-5:14 am

1 stop18h 44m

Miami

Wed 2/25

5:45 am-9:34 am

1 stop30h 49m

$195

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 5/9

7:18 pm-7:32 am

1 stop9h 14m

Miami

Wed 5/13

7:50 am-11:55 pm

1 stop19h 05m

$197

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Thu 4/23

8:26 am-6:08 pm

1 stop6h 42m

Miami

Mon 4/27

11:34 am-4:38 pm

1 stop8h 04m

$200

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 3/2

6:10 am-5:14 am

1 stop20h 04m

Miami

Thu 3/5

6:45 am-11:59 pm

1 stop20h 14m

$205

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 $527. 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 $568.

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 in the evening because they tend to be around $575. 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 $409 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 $348 on momondo.

How have Ontario to Miami flight prices changed over time?

As of February 2026, prices for Ontario to Miami flights are approximately 21% cheaper 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 51m

Direct flights

None
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

  • 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?

  • 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
5.7
3,051 reviews
Search Frontier flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,132 reviews
Search Delta flights
American AirlinesPriceFrom $317Free CancellationRating
7.2
11,212 reviews
Search American Airlines flights
United AirlinesPriceFrom $326Free CancellationRating
7.4
9,229 reviews
Search United Airlines flights
SouthwestPriceFrom $367Free CancellationRating
8.0
4,271 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
Key Largo
Marco Island
Palm Beach
Marathon
Delray Beach
Pompano Beach
Sunny Isles Beach
Jupiter
Dania Beach
Bonita Springs
Doral
Lake Worth
Boynton Beach
Deerfield Beach
Lauderdale-by-the-Sea
Miramar
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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