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Cheap flights from Ontario to Miami from $92

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 6/1. 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
3:40 pm - 7:26 am
ONT
-
MIA
12h 46m
1 stop
Frontier Logo
10:06 pm - 3:07 pm
MIA
-
ONT
20h 01m
1 stop
$219Frontier
Tue, Jul 14 - Tue, Jul 21
Frontier Logo
6:00 am - 5:51 am
ONT
-
MIA
20h 51m
1 stop
Frontier Logo
8:18 pm - 3:09 pm
MIA
-
ONT
21h 51m
1 stop
$220Frontier
Wed, Aug 12 - Tue, Aug 18
Frontier Logo
4:39 pm - 7:00 am
ONT
-
MIA
11h 21m
1 stop
Frontier Logo
8:03 pm - 8:04 am
MIA
-
ONT
15h 01m
1 stop
$224Frontier
Tue, May 26 - Thu, May 28
Frontier Logo
1:39 pm - 7:00 am
ONT
-
MIA
14h 21m
1 stop
Frontier Logo
8:03 pm - 8:04 am
MIA
-
ONT
15h 01m
1 stop
$226Frontier
Tue, May 26 - Wed, May 27
Frontier Logo
6:00 am - 5:33 am
ONT
-
MIA
20h 33m
1 stop
Frontier Logo
9:15 am - 7:08 am
MIA
-
ONT
24h 53m
1 stop
$228Frontier
Sun, May 31 - Wed, Jun 3
Frontier Logo
3:40 pm - 7:26 am
ONT
-
MIA
12h 46m
1 stop
Frontier Logo
6:50 am - 4:30 pm
MIA
-
ONT
12h 40m
1 stop
$230Frontier
Tue, Jul 7 - Sat, Jul 11
Frontier Logo
1:39 pm - 7:00 am
ONT
-
MIA
14h 21m
1 stop
Frontier Logo
9:15 am - 7:48 am
MIA
-
ONT
25h 33m
1 stop
$231Frontier
Tue, May 26 - Fri, May 29
Frontier Logo
4:39 pm - 7:00 am
ONT
-
MIA
11h 21m
1 stop
Frontier Logo
8:03 pm - 8:04 am
MIA
-
ONT
15h 01m
1 stop
$234Frontier
Tue, May 26 - Thu, May 28
Frontier Logo
10:50 am - 5:33 am
ONT
-
MIA
15h 43m
1 stop
Frontier Logo
6:30 am - 10:05 am
MIA
-
ONT
30h 35m
1 stop
$235Frontier
Mon, May 25 - Thu, May 28
Frontier Logo
6:00 am - 5:54 am
ONT
-
MIA
20h 54m
1 stop
Frontier Logo
9:35 am - 5:52 pm
MIA
-
ONT
11h 17m
1 stop
$236Frontier
Wed, Aug 19 - Thu, Aug 27

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Jul 14
ONT3:40 pmOntario
12h 46m
1 stop
MIA7:26 amMiami
Jul 21
MIA10:06 pmMiami
20h 01m
1 stop
ONT3:07 pmOntario
$219
Frontier
Aug 12
ONT6:00 amOntario
20h 51m
1 stop
MIA5:51 amMiami
Aug 18
MIA8:18 pmMiami
21h 51m
1 stop
ONT3:09 pmOntario
$220
Frontier
May 26
ONT4:39 pmOntario
11h 21m
1 stop
MIA7:00 amMiami
May 28
MIA8:03 pmMiami
15h 01m
1 stop
ONT8:04 amOntario
$224

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets
Delta
May 20
ONT4:57 pmOntario
9h 48m
1 stop
MIA5:45 amMiami
May 26
MIA4:05 pmMiami
8h 43m
1 stop
ONT9:48 pmOntario
$327
Delta
May 20
ONT4:57 pmOntario
9h 48m
1 stop
MIA5:45 amMiami
May 28
MIA4:05 pmMiami
8h 43m
1 stop
ONT9:48 pmOntario
$342
Delta
May 19
ONT10:00 pmOntario
9h 53m
1 stop
MIA10:53 amMiami
May 24
MIA6:00 amMiami
7h 57m
1 stop
ONT10:57 amOntario
$352

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 May 9, 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

Cheapest round-trip

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 7/14

3:40 pm-7:26 am

1 stop12h 46m

Miami

Tue 7/21

10:06 pm-3:07 pm

1 stop20h 01m

$219

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 8/12

6:00 am-5:51 am

1 stop20h 51m

Miami

Tue 8/18

8:18 pm-3:09 pm

1 stop21h 51m

$220

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 5/26

4:39 pm-7:00 am

1 stop11h 21m

Miami

Thu 5/28

8:03 pm-8:04 am

1 stop15h 01m

$224

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 5/26

1:39 pm-7:00 am

1 stop14h 21m

Miami

Wed 5/27

8:03 pm-8:04 am

1 stop15h 01m

$226

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Sun 5/31

6:00 am-5:33 am

1 stop20h 33m

Miami

Wed 6/3

9:15 am-7:08 am

1 stop24h 53m

$228
Quickest round-trip

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 7/7

3:40 pm-7:26 am

1 stop12h 46m

Miami

Sat 7/11

6:50 am-4:30 pm

1 stop12h 40m

$230

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 5/26

1:39 pm-7:00 am

1 stop14h 21m

Miami

Fri 5/29

9:15 am-7:48 am

1 stop25h 33m

$231

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Tue 5/26

4:39 pm-7:00 am

1 stop11h 21m

Miami

Thu 5/28

8:03 pm-8:04 am

1 stop15h 01m

$234

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Mon 5/25

10:50 am-5:33 am

1 stop15h 43m

Miami

Thu 5/28

6:30 am-10:05 am

1 stop30h 35m

$235

OntarioMiami

ONT - MIA

ONTMIA

Ontario

Wed 8/19

6:00 am-5:54 am

1 stop20h 54m

Miami

Thu 8/27

9:35 am-5:52 pm

1 stop11h 17m

$236

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 typical price of a round-trip flight between Ontario and Miami?

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 $595.

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 $483. 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 $579. 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 from Ontario 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 $400 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 $331 on momondo.

How have Ontario to Miami flight prices changed over time?

As of May 2026, prices for Ontario to Miami flights are approximately 2% 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

7h 20m

Direct flights

None
The fastest flight from Ontario to Miami takes 7h 20m
There are no direct flights from Ontario to Miami. There are no popular flight routes from Ontario to Miami.
Search flight deals

Frequently asked questions about flying from Ontario to Miami

  • 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 7h 20m.

  • 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 $124Free CancellationRating
5.6
2,960 reviews
Search Frontier flights
JetBluePriceFrom $213Free CancellationRating
7.1
2,979 reviews
Search JetBlue flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,457 reviews
Search Delta flights
United AirlinesPriceFrom $301Free CancellationRating
7.4
9,693 reviews
Search United Airlines flights
American AirlinesPriceFrom $316Free CancellationRating
7.1
11,670 reviews
Search American Airlines flights
SouthwestPriceFrom $351Free CancellationRating
7.9
4,303 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
Marco Island
Key Largo
Marathon
Palm Beach
Pompano Beach
Delray Beach
Dania Beach
Sunny Isles Beach
Bonita Springs
Doral
Jupiter
Lake Worth
Boynton Beach
Deerfield Beach
Miami Springs
Lauderdale-by-the-Sea
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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