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Cheap flights from Miami to Los Angeles from $63

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Miami to Los Angeles departing on 1/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Frontier Logo
6:25 am - 11:59 pmMIA-ONT
20h 34m1 stop
Frontier Logo
6:00 am - 5:19 amONT-MIA
20h 19m1 stop
$130Frontier
Find Deal
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
6:25 am - 11:59 pmMIA-ONT
20h 34m1 stop
Frontier Logo
6:00 am - 5:19 amONT-MIA
20h 19m1 stop
$134Frontier
Find Deal
Fri, Feb 6 - Sat, Feb 21
Frontier Logo
6:00 am - 11:10 amMIA-ONT
8h 10m1 stop
Frontier Logo
7:54 am - 11:40 pmONT-MIA
12h 46m1 stop
$138Frontier
Find Deal
Sat, Nov 15 - Mon, Nov 17
Frontier Logo
6:00 am - 11:10 amMIA-ONT
8h 10m1 stop
Frontier Logo
7:54 am - 11:40 pmONT-MIA
12h 46m1 stop
$146Frontier
Find Deal
Sat, Nov 15 - Mon, Nov 17
Multiple Airlines Logo
9:59 pm - 4:33 pmMIA-ONT
21h 34m1 stop
Multiple Airlines Logo
12:30 pm - 12:42 pmONT-MIA
21h 12m2 stops
$171Multiple Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
Frontier Logo
6:00 am - 11:10 amMIA-ONT
8h 10m1 stop
Frontier Logo
7:54 am - 11:40 pmONT-MIA
12h 46m1 stop
$176Frontier
Find Deal
Sat, Nov 15 - Mon, Nov 17
Multiple Airlines Logo
6:00 am - 11:09 amMIA-ONT
32h 09m1 stop
Multiple Airlines Logo
7:33 pm - 9:13 amONT-MIA
10h 40m1 stop
$180Multiple Airlines
Find Deal
Wed, Dec 10 - Thu, Dec 11
Frontier Logo
8:00 am - 6:49 pmMIA-ONT
13h 49m1 stop
Frontier Logo
7:54 am - 11:40 pmONT-MIA
12h 46m1 stop
$181Frontier
Find Deal
Fri, Nov 14 - Mon, Nov 17
Frontier Logo
6:00 am - 11:50 pmMIA-ONT
20h 50m1 stop
Frontier Logo
1:46 pm - 2:30 pmONT-MIA
21h 44m1 stop
$184Frontier
Find Deal
Thu, Nov 13 - Sun, Nov 16
Frontier Logo
8:00 am - 6:49 pmMIA-ONT
13h 49m1 stop
Frontier Logo
12:58 am - 5:10 amONT-MIA
25h 12m1 stop
$206Frontier
Find Deal
Mon, Nov 17 - Wed, Nov 19

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets
Frontier
Jan 8
MIA6:25 amMiami
20h 34m
1 stop
ONT11:59 pmOntario
Jan 12
ONT6:00 amOntario
20h 19m
1 stop
MIA5:19 amMiami
$130
Find similar
Frontier
Feb 6
MIA6:25 amMiami
20h 34m
1 stop
ONT11:59 pmOntario
Feb 21
ONT6:00 amOntario
20h 19m
1 stop
MIA5:19 amMiami
$134
Find similar
Frontier
Nov 15
MIA6:00 amMiami
8h 10m
1 stop
ONT11:10 amOntario
Nov 17
ONT7:54 amOntario
12h 46m
1 stop
MIA11:40 pmMiami
$138
Find similar

Delta flights from Miami to Ontario

Our best Delta deals on Miami to Ontario flight tickets
Delta
Nov 15
MIA6:00 amMiami
8h 06m
1 stop
ONT11:06 amOntario
Nov 18
ONT10:25 pmOntario
7h 58m
1 stop
MIA9:23 amMiami
$337
Find similar
Delta
Nov 8
MIA4:55 pmMiami
7h 25m
1 stop
ONT9:20 pmOntario
Dec 3
ONT12:12 pmOntario
9h 34m
1 stop
MIA12:46 amMiami
$382
Find similar
Delta
Nov 14
MIA3:50 pmMiami
10h 14m
1 stop
ONT11:04 pmOntario
Nov 19
ONT10:25 pmOntario
7h 58m
1 stop
MIA9:23 amMiami
$387
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Miami to Ontario 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 November 3, 2025.
Use the filters below to find and compare flights from Miami to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 1/8

6:25 am-11:59 pm

1 stop20h 34m

Ontario

Mon 1/12

6:00 am-5:19 am

1 stop20h 19m

$130

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 2/6

6:25 am-11:59 pm

1 stop20h 34m

Ontario

Sat 2/21

6:00 am-5:19 am

1 stop20h 19m

$134

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 11/15

6:00 am-11:10 am

1 stop8h 10m

Ontario

Mon 11/17

7:54 am-11:40 pm

1 stop12h 46m

$138

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 11/15

6:00 am-11:10 am

1 stop8h 10m

Ontario

Mon 11/17

7:54 am-11:40 pm

1 stop12h 46m

$146

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 12/4

9:59 pm-4:33 pm

1 stop21h 34m

Ontario

Tue 12/9

12:30 pm-12:42 pm

2 stops21h 12m

$171

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 11/15

6:00 am-11:10 am

1 stop8h 10m

Ontario

Mon 11/17

7:54 am-11:40 pm

1 stop12h 46m

$176

MiamiOntario

MIA - ONT

MIAONT

Miami

Wed 12/10

6:00 am-11:09 am

1 stop32h 09m

Ontario

Thu 12/11

7:33 pm-9:13 am

1 stop10h 40m

$180

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 11/14

8:00 am-6:49 pm

1 stop13h 49m

Ontario

Mon 11/17

7:54 am-11:40 pm

1 stop12h 46m

$181

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 11/13

6:00 am-11:50 pm

1 stop20h 50m

Ontario

Sun 11/16

1:46 pm-2:30 pm

1 stop21h 44m

$184

MiamiOntario

MIA - ONT

MIAONT

Miami

Mon 11/17

8:00 am-6:49 pm

1 stop13h 49m

Ontario

Wed 11/19

12:58 am-5:10 am

1 stop25h 12m

$206

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Miami to Ontario

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 Ontario?

In general, August is the cheapest month to fly from Miami to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $336. If you aren’t able to travel during the month of August, then book flights to Ontario from Miami during November instead. Flights to Ontario in November, while not as cheap as those in August, still average around $339.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $286. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Miami to Ontario for around $499.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Miami to Ontario when you can find flight prices for as low as $294. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $437 on average. Flights to Ontario from Miami at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Miami to Ontario flight prices changed over time?

As of November 2025, prices for Miami to Ontario flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from Miami to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Miami to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Miami to Ontario (MIA to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Miami to Ontario

Direct flights

None
There are no direct flights from Miami to Ontario. There are no popular flight routes from Miami to Ontario.
Search flight deals

  • How far is Miami to Ontario by plane?

    A flight from Miami to Ontario will travel around 2299.8 mi. 8h 09m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Miami Airport to Ontario Airport?

    Prices for flights from Miami Airport to Ontario Airport refresh daily.

  • How many operators does momondo search for flights from Miami Airport to Ontario Airport?

  • How old do you have to be to fly from Miami Airport to Ontario Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Miami Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents required for your trip to Ontario 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 Ontario 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 Miami to Ontario?

Best airlines flying from Miami to Ontario

Compare and see reviews for airlines that fly from Miami to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $170Free CancellationRating
5.8
3,117 reviews
Search Frontier flights
DeltaPriceFrom $253Free CancellationRating
7.9
8,002 reviews
Search Delta flights
American AirlinesPriceFrom $305Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $336Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Miami to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Miami.

Can I find flights from Miami to Ontario with flexible booking policies on momondo?

Flights from Miami to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Miami to Ontario?

Once all potential Miami to Ontario 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 Miami to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Miami. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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