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Cheap flights from Ontario to Miami from $97

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 11/9. 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

Frontier Logo
12:32 pm - 2:38 pmONT-MIA
23h 06m1 stop
Frontier Logo
8:00 am - 4:28 pmMIA-ONT
11h 28m1 stop
$158Frontier
Find Deal
jue., oct. 16 - lun., oct. 20
Frontier Logo
12:28 pm - 2:36 pmONT-MIA
23h 08m1 stop
Frontier Logo
6:00 am - 7:53 amMIA-ONT
28h 53m1 stop
$161Frontier
Find Deal
vie., sep. 12 - dom., sep. 14
Frontier Logo
12:28 pm - 2:31 pmONT-MIA
23h 03m1 stop
Frontier Logo
6:00 am - 7:53 amMIA-ONT
28h 53m1 stop
$162Frontier
Find Deal
jue., sep. 18 - dom., sep. 28
Frontier Logo
8:59 pm - 12:44 amONT-MIA
24h 45m1 stop
Frontier Logo
6:00 am - 7:54 pmMIA-ONT
16h 54m1 stop
$163Frontier
Find Deal
mar., sep. 23 - jue., sep. 25
Frontier Logo
8:59 pm - 12:44 amONT-MIA
24h 45m1 stop
Frontier Logo
6:45 am - 7:54 pmMIA-ONT
16h 09m1 stop
$165Frontier
Find Deal
sáb., sep. 13 - sáb., sep. 20
Frontier Logo
8:59 pm - 12:44 amONT-MIA
24h 45m1 stop
Frontier Logo
6:45 am - 7:23 amMIA-ONT
27h 38m1 stop
$172Frontier
Find Deal
sáb., sep. 6 - sáb., sep. 13
Frontier Logo
12:28 pm - 2:31 pmONT-MIA
23h 03m1 stop
Frontier Logo
8:00 am - 6:35 pmMIA-ONT
13h 35m1 stop
$175Frontier
Find Deal
dom., sep. 7 - vie., sep. 19
Frontier Logo
8:59 pm - 12:44 amONT-MIA
24h 45m1 stop
Frontier Logo
6:45 am - 7:54 pmMIA-ONT
16h 09m1 stop
$180Frontier
Find Deal
vie., sep. 5 - sáb., sep. 13
Logo
12:28 pm - 9:01 amONT-MIA
17h 33m1 stop
Logo
7:00 am - 6:35 pmMIA-ONT
14h 35m2 stops
$237
Find Deal
vie., sep. 26 - vie., oct. 3
Logo
12:13 pm - 1:00 pmONT-MIA
21h 47m1 stop
Logo
7:54 pm - 11:33 amMIA-ONT
18h 39m1 stop
$240
Find Deal
lun., sep. 29 - mié., oct. 1

Frontier flights from Ontario to Miami

Our best Frontier deals on Ontario to Miami flight tickets
Frontier
Oct 16
ONT12:32 pmOntario
23h 06m
1 stop
MIA2:38 pmMiami
Oct 20
MIA8:00 amMiami
11h 28m
1 stop
ONT4:28 pmOntario
$158
Find similar
Frontier
Sep 12
ONT12:28 pmOntario
23h 08m
1 stop
MIA2:36 pmMiami
Sep 14
MIA6:00 amMiami
28h 53m
1 stop
ONT7:53 amOntario
$161
Find similar
Frontier
Sep 18
ONT12:28 pmOntario
23h 03m
1 stop
MIA2:31 pmMiami
Sep 28
MIA6:00 amMiami
28h 53m
1 stop
ONT7:53 amOntario
$162
Find similar

Delta flights from Ontario to Miami

Our best Delta deals on Ontario to Miami flight tickets
Delta
Sep 3
ONT11:45 amOntario
9h 39m
1 stop
MIA12:24 amMiami
Sep 9
MIA2:45 pmMiami
7h 26m
1 stop
ONT7:11 pmOntario
$312
Find similar
Delta
Aug 31
ONT7:05 amOntario
11h 25m
2 stops
MIA9:30 pmMiami
Sep 12
MIA6:30 pmMiami
8h 12m
1 stop
ONT11:42 pmOntario
$317
Find similar
Delta
Sep 3
ONT6:05 amOntario
12h 23m
2 stops
MIA9:28 pmMiami
Sep 9
MIA2:45 pmMiami
10h 55m
2 stops
ONT10:40 pmOntario
$322
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 agosto 26, 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

jue. 10/16

12:32 pm-2:38 pm

1 stop23h 06m

Miami

lun. 10/20

8:00 am-4:28 pm

1 stop11h 28m

$158

OntarioMiami

ONT - MIA

ONTMIA

Ontario

vie. 9/12

12:28 pm-2:36 pm

1 stop23h 08m

Miami

dom. 9/14

6:00 am-7:53 am

1 stop28h 53m

$161

OntarioMiami

ONT - MIA

ONTMIA

Ontario

jue. 9/18

12:28 pm-2:31 pm

1 stop23h 03m

Miami

dom. 9/28

6:00 am-7:53 am

1 stop28h 53m

$162

OntarioMiami

ONT - MIA

ONTMIA

Ontario

mar. 9/23

8:59 pm-12:44 am

1 stop24h 45m

Miami

jue. 9/25

6:00 am-7:54 pm

1 stop16h 54m

$163

OntarioMiami

ONT - MIA

ONTMIA

Ontario

sáb. 9/13

8:59 pm-12:44 am

1 stop24h 45m

Miami

sáb. 9/20

6:45 am-7:54 pm

1 stop16h 09m

$165

OntarioMiami

ONT - MIA

ONTMIA

Ontario

sáb. 9/6

8:59 pm-12:44 am

1 stop24h 45m

Miami

sáb. 9/13

6:45 am-7:23 am

1 stop27h 38m

$172

OntarioMiami

ONT - MIA

ONTMIA

Ontario

dom. 9/7

12:28 pm-2:31 pm

1 stop23h 03m

Miami

vie. 9/19

8:00 am-6:35 pm

1 stop13h 35m

$175

OntarioMiami

ONT - MIA

ONTMIA

Ontario

vie. 9/5

8:59 pm-12:44 am

1 stop24h 45m

Miami

sáb. 9/13

6:45 am-7:54 pm

1 stop16h 09m

$180

OntarioMiami

ONT - MIA

ONTMIA

Ontario

vie. 9/26

12:28 pm-9:01 am

1 stop17h 33m

Miami

vie. 10/3

7:00 am-6:35 pm

2 stops14h 35m

$237

OntarioMiami

ONT - MIA

ONTMIA

Ontario

lun. 9/29

12:13 pm-1:00 pm

1 stop21h 47m

Miami

mié. 10/1

7:54 pm-11:33 am

1 stop18h 39m

$240

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 $334. 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 $350.

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 $542. 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 $597.

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 at noon because they tend to be around $623. 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 $432 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 $362 on momondo.

How have Ontario to Miami flight prices changed over time?

As of August 2025, prices for Ontario to Miami flights are approximately 3% 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

Direct flights

None
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 7h 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 $130Free CancellationRating
5.8
3,200 reviews
Search Frontier flights
United AirlinesPriceFrom $294Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
DeltaPriceFrom $296Free CancellationRating
7.9
7,979 reviews
Search Delta flights
American AirlinesPriceFrom $310Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $360Free CancellationRating
8.0
4,242 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
Palm Beach
Marathon
Delray Beach
Pompano Beach
Jupiter
Sunny Isles Beach
Dania Beach
Lake Worth
Deerfield Beach
Boynton Beach
Bonita Springs
Stuart
Miramar
Miami Gardens
Doral

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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