MIA - ONT

$95 Find Cheap Flights from Miami to Ontario - Compare and Save

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Everything you should know

Cheapest round-trip
$225
Typical prices: $326-$476
Frontier
Mon 12/3Sun 12/9
MIA - ONT • 2 stops
Cheapest one-way
$95
Typical prices: $192-$299
Frontier
Thu 1/11
MIA - ONT • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Miami and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
September
Cheapest • 30% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Houston George Bush Intcntl (IAH)
Cheapest • Avg $198 (round-trip)
Houston Hobby (HOU)
Shortest trip • 6h 49m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Miami to Ontario (MIA-ONT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Miami to Ontario

Thu, Dec 3 - Wed, Dec 9
Frontier Logo
10:49 am - 12:17 amMIA  Miami-ONT Ontario
16h 28m2 stops Dallas/Fort Worth Denver Intl
Frontier Logo
11:30 am - 9:59 amONT  Ontario-MIA Miami
19h 29m2 stops Denver Intl Dallas/Fort Worth
$225Frontier
Fri, Dec 11 - Mon, Dec 14
Frontier Logo
7:46 am - 6:31 pmMIA  Miami-ONT Ontario
13h 45m2 stops Houston George Bush Intcntl Las Vegas Harry Reid Intl
Frontier Logo
6:00 am - 9:59 amONT  Ontario-MIA Miami
24h 59m2 stops Denver Intl Dallas/Fort Worth
$229Frontier
Sat, Dec 5 - Sat, Dec 12
Multiple Airlines Logo
5:01 am - 10:45 amMIA  Miami-ONT Ontario
8h 44m1 stop Denver Intl
Multiple Airlines Logo
6:17 pm - 3:48 pmONT  Ontario-MIA Miami
18h 31m1 stop Portland
$384Multiple Airlines
Wed, Dec 2 - Wed, Dec 9
Multiple Airlines Logo
4:51 pm - 11:54 pmMIA  Miami-ONT Ontario
10h 03m1 stop Portland
Multiple Airlines Logo
6:00 am - 9:14 pmONT  Ontario-MIA Miami
12h 14m1 stop Denver Intl
$394Multiple Airlines
Wed, Dec 2 - Tue, Dec 8
Delta Logo
6:50 am - 12:17 pmMIA  Miami-ONT Ontario
8h 27m1 stop Salt Lake City
Delta Logo
5:04 pm - 6:27 amONT  Ontario-MIA Miami
10h 23m1 stop Salt Lake City
$433Delta
Sat, Dec 5 - Sat, Dec 5
Delta Logo
6:00 am - 11:07 amMIA  Miami-ONT Ontario
8h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:12 pm - 6:27 amONT  Ontario-MIA Miami
10h 15m1 stop Salt Lake City
$433Delta
Thu, Dec 3 - Wed, Dec 9
American Airlines Logo
1:40 pm - 7:05 pmMIA  Miami-ONT Ontario
8h 25m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
10:32 am - 8:50 pmONT  Ontario-MIA Miami
7h 18m1 stop Dallas/Fort Worth
$454American Airlines
Wed, Dec 23 - Mon, Dec 28
Southwest Logo
5:15 am - 11:50 amMIA  Miami-ONT Ontario
9h 35m2 stops Houston Hobby Phoenix Sky Harbor Intl
Southwest Logo
6:45 am - 7:40 pmONT  Ontario-MIA Miami
9h 55m2 stops Phoenix Sky Harbor Intl Austin Bergstrom
$500Southwest
Wed, Dec 23 - Mon, Dec 28
Southwest Logo
5:15 am - 11:50 amMIA  Miami-ONT Ontario
9h 35m2 stops Houston Hobby Phoenix Sky Harbor Intl
Southwest Logo
6:45 am - 7:40 pmONT  Ontario-MIA Miami
9h 55m2 stops Phoenix Sky Harbor Intl Austin Bergstrom
$500Southwest
Sat, Nov 21 - Wed, Nov 25
American Airlines Logo
7:04 am - 11:55 amMIA  Miami-ONT Ontario
7h 51m1 stop Dallas/Fort Worth
American Airlines Logo
10:37 am - 9:10 pmONT  Ontario-MIA Miami
7h 33m1 stop Dallas/Fort Worth
$570American Airlines
Booking Insights

Price, demand and travel trends for Miami to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Miami to Ontario?

Round-trip flights from Miami to Ontario typically range from $326 to $476. The lowest price found in the past 5 days was $225, on Frontier.

What's the cheapest day of the week to fly from Miami to Ontario?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Miami to Ontario. It’s 25% cheaper than the average day, while Sunday is the most expensive, with prices 35% higher.

What’s the cheapest month to fly from Miami to Ontario?

•September is the cheapest month to fly from Miami to Ontario at $278 round-trip.
•March ($492) and January ($457) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 76% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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Key details for Miami to Ontario flights

Low season

May

Cheapest flight

$95
Beat the crowds with an average 22% drop in travelers.
The most popular month to fly with an average 33% increase in travelers.
One-way flight from Miami to Ontario

When to book flights from Miami to Ontario

Are your dates flexible? Find out the best times to travel from Miami to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Miami to Ontario flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Miami to Ontario?

    Only Economy Class is available on flights from Miami to Ontario.

  • How long is a flight from Miami to Ontario?

    A nonstop flight from Miami to Ontario takes 00m, covering 2,291 miles.

  • Do I need a passport to fly from Miami to Ontario?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Miami to Ontario flight?

    Round-trip flights from Miami to Ontario range from $326 to $476, with an average of $396 over the past 12 months. Anything below $326 counts as a good deal.

  • Have flight prices from Miami to Ontario changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $225 to $1,664. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Miami to Ontario looking right now?

    One-way fares from Miami to Ontario are currently lower than usual. Average one-way flight prices are about $216, which is 15% below the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include:

    • Fox
    • Europcar
    • Thrifty
    • Alamo
    • Dollar

  • Which airports can I use when flying from Miami to Ontario?

    Flights from Miami to Ontario usually depart from Miami (MIA) and arrive at Ontario (ONT).

  • Which airports do connecting flights from Miami to Ontario pass through?

    One-stop flights from Miami to Ontario most commonly connect through:

    • Dallas/Fort Worth (DFW) - 35% of one-stop connections
    • Denver Intl (DEN) - 26% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 21% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 6% of one-stop connections

  • Can I save money by using flexible dates for flights from Miami to Ontario?

    Yes. Flexible dates can save you up to 45% on flights from Miami to Ontario. Monday is the cheapest departure day at $298 round-trip on average, while Sunday is the most expensive at $535, a difference of $237.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Miami to Ontario?

    Flying via Houston Hobby (HOU) gives the shortest average 1-stop total travel time at 6h 49m, compared with 7h 29m via Phoenix Sky Harbor Intl (PHX) and 7h 37m via Dallas/Fort Worth (DFW).

  • What is the time difference between Miami and Ontario?

    Ontario is 3 hours behind Miami (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking Miami to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Sunday. On this route, Monday flights average $298, about $237 less than Sunday fares (44% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Miami to Ontario trip for September. Fares historically average $278 round-trip in that month - typically $214 less than the most expensive month, which is March (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

    • Ontario Airport Inn
    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • Holiday Inn Ontario Airport By IHG

More options for your flight from Miami to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario