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Cheap flights from Miami to Los Angeles from $120

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 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Miami to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:11 pm - 3:08 pm
MIA
-
ONT
19h 57m
1 stop
Frontier Logo
3:40 pm - 6:30 am
ONT
-
MIA
11h 50m
1 stop
$238Frontier
Thu, Jul 2 - Sun, Jul 5
Frontier Logo
7:00 am - 4:48 pm
MIA
-
ONT
12h 48m
1 stop
Frontier Logo
3:40 pm - 7:26 am
ONT
-
MIA
12h 46m
1 stop
$263Frontier
Sat, Jul 4 - Mon, Jul 6
Frontier Logo
6:00 am - 4:48 pm
MIA
-
ONT
13h 48m
1 stop
Frontier Logo
3:34 pm - 7:16 am
ONT
-
MIA
12h 42m
1 stop
$288Frontier
Wed, Aug 19 - Mon, Aug 24
Frontier Logo
9:35 am - 5:52 pm
MIA
-
ONT
11h 17m
1 stop
Frontier Logo
3:34 pm - 7:16 am
ONT
-
MIA
12h 42m
1 stop
$307Frontier
Tue, Aug 18 - Mon, Aug 24
Frontier Logo
9:35 am - 5:52 pm
MIA
-
ONT
11h 17m
1 stop
Frontier Logo
3:34 pm - 7:16 am
ONT
-
MIA
12h 42m
1 stop
$308Frontier
Fri, Aug 21 - Mon, Aug 24
Frontier Logo
7:00 am - 4:48 pm
MIA
-
ONT
12h 48m
1 stop
Frontier Logo
3:40 pm - 7:26 am
ONT
-
MIA
12h 46m
1 stop
$310Frontier
Wed, Jul 1 - Tue, Jul 7
Frontier Logo
10:06 pm - 3:07 pm
MIA
-
ONT
20h 01m
1 stop
Frontier Logo
6:00 am - 5:51 am
ONT
-
MIA
20h 51m
1 stop
$319Frontier
Tue, Jul 7 - Tue, Jul 14
Frontier Logo
9:35 am - 5:52 pm
MIA
-
ONT
11h 17m
1 stop
Frontier Logo
5:43 pm - 12:16 am
ONT
-
MIA
27h 33m
1 stop
$320Frontier
Wed, Aug 19 - Tue, Aug 25
Frontier Logo
6:00 am - 11:50 pm
MIA
-
ONT
20h 50m
1 stop
Frontier Logo
5:43 pm - 12:21 am
ONT
-
MIA
27h 38m
1 stop
$321Frontier
Mon, Jul 13 - Sat, Jul 18
Frontier Logo
10:11 pm - 3:08 pm
MIA
-
ONT
19h 57m
1 stop
Frontier Logo
10:49 am - 5:51 am
ONT
-
MIA
16h 02m
1 stop
$322Frontier
Thu, Jul 2 - Sun, Jul 19

Frontier flights from Miami to Ontario

Our best Frontier deals on Miami to Ontario flight tickets
Frontier
Jul 2
MIA10:11 pmMiami
19h 57m
1 stop
ONT3:08 pmOntario
Jul 5
ONT3:40 pmOntario
11h 50m
1 stop
MIA6:30 amMiami
$238
Frontier
Jul 4
MIA7:00 amMiami
12h 48m
1 stop
ONT4:48 pmOntario
Jul 6
ONT3:40 pmOntario
12h 46m
1 stop
MIA7:26 amMiami
$263
Frontier
Aug 19
MIA6:00 amMiami
13h 48m
1 stop
ONT4:48 pmOntario
Aug 24
ONT3:34 pmOntario
12h 42m
1 stop
MIA7:16 amMiami
$288

Delta flights from Miami to Ontario

Our best Delta deals on Miami to Ontario flight tickets
Delta
Aug 19
MIA7:15 amMiami
7h 50m
1 stop
ONT12:05 pmOntario
Aug 25
ONT7:05 amOntario
8h 35m
1 stop
MIA6:40 pmMiami
$327
Delta
Sep 3
MIA4:40 pmMiami
8h 16m
1 stop
ONT9:56 pmOntario
Sep 8
ONT12:00 pmOntario
9h 54m
1 stop
MIA12:54 amMiami
$342
Delta
May 28
MIA4:05 pmMiami
8h 43m
1 stop
ONT9:48 pmOntario
Jun 2
ONT4:57 pmOntario
9h 48m
1 stop
MIA5:45 amMiami
$352

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 May 20, 2026.
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

Cheapest round-trip

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 7/2

10:11 pm-3:08 pm

1 stop19h 57m

Ontario

Sun 7/5

3:40 pm-6:30 am

1 stop11h 50m

$238

MiamiOntario

MIA - ONT

MIAONT

Miami

Sat 7/4

7:00 am-4:48 pm

1 stop12h 48m

Ontario

Mon 7/6

3:40 pm-7:26 am

1 stop12h 46m

$263

MiamiOntario

MIA - ONT

MIAONT

Miami

Wed 8/19

6:00 am-4:48 pm

1 stop13h 48m

Ontario

Mon 8/24

3:34 pm-7:16 am

1 stop12h 42m

$288
Quickest round-trip

MiamiOntario

MIA - ONT

MIAONT

Miami

Tue 8/18

9:35 am-5:52 pm

1 stop11h 17m

Ontario

Mon 8/24

3:34 pm-7:16 am

1 stop12h 42m

$307

MiamiOntario

MIA - ONT

MIAONT

Miami

Fri 8/21

9:35 am-5:52 pm

1 stop11h 17m

Ontario

Mon 8/24

3:34 pm-7:16 am

1 stop12h 42m

$308

MiamiOntario

MIA - ONT

MIAONT

Miami

Wed 7/1

7:00 am-4:48 pm

1 stop12h 48m

Ontario

Tue 7/7

3:40 pm-7:26 am

1 stop12h 46m

$310

MiamiOntario

MIA - ONT

MIAONT

Miami

Tue 7/7

10:06 pm-3:07 pm

1 stop20h 01m

Ontario

Tue 7/14

6:00 am-5:51 am

1 stop20h 51m

$319

MiamiOntario

MIA - ONT

MIAONT

Miami

Wed 8/19

9:35 am-5:52 pm

1 stop11h 17m

Ontario

Tue 8/25

5:43 pm-12:16 am

1 stop27h 33m

$320

MiamiOntario

MIA - ONT

MIAONT

Miami

Mon 7/13

6:00 am-11:50 pm

1 stop20h 50m

Ontario

Sat 7/18

5:43 pm-12:21 am

1 stop27h 38m

$321

MiamiOntario

MIA - ONT

MIAONT

Miami

Thu 7/2

10:11 pm-3:08 pm

1 stop19h 57m

Ontario

Sun 7/19

10:49 am-5:51 am

1 stop16h 02m

$322

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

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 February instead. Flights to Ontario in February, while not as cheap as those in August, still average around $347.

How have Miami to Ontario flight prices changed over time?

As of May 2026, prices for Miami to Ontario flights are approximately 30% 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

Fastest flight time

7h 07m

Direct flights

None
The fastest flight from Miami to Ontario takes 7h 07m
There are no direct flights from Miami to Ontario. There are no popular flight routes from Miami to Ontario.
Search flight deals

Frequently asked questions about flying from Miami to Ontario

  • How far is Miami to Ontario by plane?

    A flight from Miami to Ontario will travel around 2299.8 mi. 7h 07m 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
American AirlinesPriceFrom $298Free CancellationRating
7.1
11,642 reviews
Search American Airlines flights
SouthwestPriceFrom $326Free CancellationRating
7.9
4,284 reviews
Search Southwest flights
DeltaPriceFrom $365Free CancellationRating
7.9
8,453 reviews
Search Delta 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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