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Cheap flights from Ontario to Miami from $59

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.
Multiple Airlines Logo
10:03 pm - 10:46 am
ONT
-
MIA
9h 43m
2 stops
Multiple Airlines Logo
8:35 pm - 4:23 pm
MIA
-
ONT
22h 48m
1 stop
$314Multiple Airlines
Sat, Mar 28 - Mon, Apr 6
Frontier Logo
6:20 am - 5:49 am
ONT
-
MIA
20h 29m
1 stop
Frontier Logo
12:59 pm - 6:45 pm
MIA
-
ONT
8h 46m
1 stop
$316Frontier
Sun, Apr 5 - Sun, Apr 12
Frontier Logo
6:00 am - 5:14 am
ONT
-
MIA
20h 14m
1 stop
Frontier Logo
6:45 am - 11:59 pm
MIA
-
ONT
20h 14m
1 stop
$317Frontier
Sat, Feb 14 - Sun, Feb 22
Frontier Logo
6:15 am - 12:47 am
ONT
-
MIA
39h 32m
2 stops
Frontier Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$318Frontier
Fri, Mar 6 - Fri, Mar 13
Frontier Logo
6:15 am - 4:49 am
ONT
-
MIA
19h 34m
1 stop
Frontier Logo
5:50 am - 11:59 pm
MIA
-
ONT
21h 09m
1 stop
$319Frontier
Sat, Mar 7 - Sat, Mar 14
Multiple Airlines Logo
6:20 am - 5:49 am
ONT
-
MIA
20h 29m
1 stop
Multiple Airlines Logo
4:44 pm - 10:19 am
MIA
-
ONT
20h 35m
1 stop
$320Multiple Airlines
Fri, Apr 10 - Fri, Apr 17
Frontier Logo
6:20 am - 5:49 am
ONT
-
MIA
20h 29m
1 stop
Frontier Logo
3:08 pm - 11:56 pm
MIA
-
ONT
11h 48m
1 stop
$321Frontier
Fri, Apr 3 - Sat, Apr 11
Frontier Logo
6:20 am - 5:49 am
ONT
-
MIA
20h 29m
1 stop
Frontier Logo
3:08 pm - 11:56 pm
MIA
-
ONT
11h 48m
1 stop
$322Frontier
Fri, Apr 3 - Sat, Apr 11
Frontier Logo
6:10 am - 5:14 am
ONT
-
MIA
20h 04m
1 stop
Frontier Logo
5:50 am - 10:59 pm
MIA
-
ONT
21h 09m
1 stop
$323Frontier
Mon, Mar 2 - Sun, Mar 8
Multiple Airlines Logo
6:39 pm - 10:46 am
ONT
-
MIA
13h 07m
1 stop
Multiple Airlines Logo
8:35 pm - 4:23 pm
MIA
-
ONT
22h 48m
1 stop
$324Multiple Airlines
Sat, Mar 28 - Mon, Apr 6

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Jan 29
ONT6:20 amOntario
7h 17m
1 stop
MIA4:37 pmMiami
Feb 9
MIA7:00 amMiami
20h 20m
1 stop
ONT12:20 amOntario
$315
Frontier
Apr 5
ONT6:20 amOntario
20h 29m
1 stop
MIA5:49 amMiami
Apr 12
MIA12:59 pmMiami
8h 46m
1 stop
ONT6:45 pmOntario
$316
Frontier
Feb 14
ONT6:00 amOntario
20h 14m
1 stop
MIA5:14 amMiami
Feb 22
MIA6:45 amMiami
20h 14m
1 stop
ONT11:59 pmOntario
$317

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets
Delta
Apr 21
ONT10:15 pmOntario
8h 04m
1 stop
MIA9:19 amMiami
Apr 29
MIA7:00 amMiami
7h 29m
1 stop
ONT11:29 amOntario
$327
Delta
Feb 14
ONT1:15 pmOntario
8h 38m
1 stop
MIA12:53 amMiami
Feb 19
MIA6:43 amMiami
8h 24m
1 stop
ONT12:07 pmOntario
$337
Delta
May 26
ONT5:05 pmOntario
10h 02m
1 stop
MIA6:07 amMiami
Jun 3
MIA4:40 pmMiami
8h 29m
1 stop
ONT10:09 pmOntario
$347

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 January 21, 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

Sat 3/28

10:03 pm-10:46 am

2 stops9h 43m

Miami

Mon 4/6

8:35 pm-4:23 pm

1 stop22h 48m

$314

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sun 4/5

6:20 am-5:49 am

1 stop20h 29m

Miami

Sun 4/12

12:59 pm-6:45 pm

1 stop8h 46m

$316

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 2/14

6:00 am-5:14 am

1 stop20h 14m

Miami

Sun 2/22

6:45 am-11:59 pm

1 stop20h 14m

$317

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 3/6

6:15 am-12:47 am

2 stops39h 32m

Miami

Fri 3/13

5:50 am-11:59 pm

1 stop21h 09m

$318

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 3/7

6:15 am-4:49 am

1 stop19h 34m

Miami

Sat 3/14

5:50 am-11:59 pm

1 stop21h 09m

$319

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 4/10

6:20 am-5:49 am

1 stop20h 29m

Miami

Fri 4/17

4:44 pm-10:19 am

1 stop20h 35m

$320

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 4/3

6:20 am-5:49 am

1 stop20h 29m

Miami

Sat 4/11

3:08 pm-11:56 pm

1 stop11h 48m

$321

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Fri 4/3

6:20 am-5:49 am

1 stop20h 29m

Miami

Sat 4/11

3:08 pm-11:56 pm

1 stop11h 48m

$322

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 3/2

6:10 am-5:14 am

1 stop20h 04m

Miami

Sun 3/8

5:50 am-10:59 pm

1 stop21h 09m

$323

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sat 3/28

6:39 pm-10:46 am

1 stop13h 07m

Miami

Mon 4/6

8:35 pm-4:23 pm

1 stop22h 48m

$324

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 $528. 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 $569.

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 $408 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 January 2026, prices for Ontario to Miami flights are approximately 99% 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 23m

Direct flights

None
The fastest flight from Ontario to Miami takes 6h 23m
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 23m.

  • 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
3,057 reviews
Search Frontier flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,089 reviews
Search Delta flights
United AirlinesPriceFrom $301Free CancellationRating
7.4
9,191 reviews
Search United Airlines flights
American AirlinesPriceFrom $317Free CancellationRating
7.2
11,174 reviews
Search American Airlines flights
SouthwestPriceFrom $367Free CancellationRating
8.0
4,266 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
Key Largo
Islamorada
Marco Island
Marathon
Palm Beach
Delray Beach
Pompano Beach
Sunny Isles Beach
Jupiter
Dania Beach
Bonita Springs
Doral
Lake Worth
Boynton Beach
Deerfield Beach
Lauderdale-by-the-Sea
Miramar
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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