$62+ Cheap flights from Miami to Ontario (MIA - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ONT
Apr 6 — Apr 131
Round-trip
1 adult, Economy
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Find cheap flights from Miami to Ontario with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Miami to OntarioExplore the most affordable flight options available from Miami to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 7, 2026.
Explore the most affordable flight options available from Miami to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 7, 2026.
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:29 pm
MIA
- ONT
1 stop13h 26m
Frontier
Wed 4/2211:44 am
ONT
- MIA
1 stop16h 48m
Frontier
Deal found 3/3![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:45 pm
MIA
- ONT
1 stop8h 39m
Frontier
Mon 5/118:26 am
ONT
- MIA
1 stop6h 42m
Frontier
Deal found 3/3![Frontier logo]()
$200
This Booking.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:39 am
MIA
- ONT
1 stop11h 06m
Frontier
Mon 4/136:20 am
ONT
- MIA
1 stop20h 29m
Frontier
Deal found 3/6![Frontier logo]()
$202
This Gotogate deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:29 pm
MIA
- ONT
1 stop13h 26m
Frontier
Fri 4/245:33 pm
ONT
- MIA
1 stop8h 32m
Frontier
Deal found 3/2![Frontier logo]()
$206
This Booking.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Tue 4/147:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Deal found 3/7![Frontier logo]()
$207
This CheapOair deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Sat 4/117:40 pm
ONT
- MIA
1 stop13h 09m
Frontier
Deal found 3/3![Frontier logo]()
$211
This Booking.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:15 pm
MIA
- ONT
1 stop11h 40m
Frontier
Tue 4/2812:59 am
ONT
- MIA
1 stop25h 06m
Frontier
Deal found 3/4![Frontier logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:35 pm
MIA
- ONT
1 stop25h 10m
Multiple Airlines
Thu 4/168:26 am
ONT
- MIA
1 stop12h 43m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$217
This Frontier deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:39 am
MIA
- ONT
1 stop11h 06m
Frontier
Wed 4/157:44 pm
ONT
- MIA
1 stop8h 48m
Frontier
Deal found 3/4![Frontier logo]()
$219
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/171:15 pm
MIA
- ONT
1 stop13h 43m
Frontier
Fri 4/245:33 pm
ONT
- MIA
1 stop8h 32m
Frontier
Deal found 3/5![Frontier logo]()
$222
Best flights from Miami to OntarioDiscover carefully curated flight deals from Miami to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 7, 2026.
Discover carefully curated flight deals from Miami to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 7, 2026.
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:00 am
MIA
- ONT
1 stop8h 19m
Delta
Sat 6/66:00 am
ONT
- MIA
2 stops14h 11m
Delta
Deal found 3/6![Delta logo]()
$388
This Southwest deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:40 am
MIA
- ONT
1 stop10h 30m
Southwest
Mon 3/309:55 pm
ONT
- MIA
1 stop10h 05m
Southwest
Deal found 3/2![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:37 am
MIA
- ONT
1 stop8h 10m
United Airlines
Thu 8/135:45 am
ONT
- MIA
1 stop6h 58m
United Airlines
Deal found 3/2![United Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:30 am
MIA
- ONT
2 stops8h 25m
Southwest
Sun 6/142:40 pm
ONT
- MIA
1 stop6h 55m
Southwest
Deal found 3/2![Southwest logo]()
$422
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/173:33 pm
MIA
- ONT
1 stop8h 27m
Delta
Wed 3/185:09 pm
ONT
- MIA
1 stop9h 31m
Delta
Deal found 3/5![Delta logo]()
$437
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:58 pm
MIA
- ONT
1 stop7h 54m
United Airlines
Wed 8/265:00 am
ONT
- MIA
2 stops14h 39m
United Airlines
Deal found 3/5![United Airlines logo]()
$452
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/206:40 am
MIA
- ONT
1 stop10h 30m
Southwest
Tue 3/2411:05 am
ONT
- MIA
2 stops8h 10m
Southwest
Deal found 3/5![Southwest logo]()
$443
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:48 am
MIA
- ONT
2 stops11h 40m
United Airlines
Sat 6/65:00 am
ONT
- MIA
2 stops12h 33m
United Airlines
Deal found 3/3![United Airlines logo]()
$457
This Southwest deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/31:25 pm
MIA
- ONT
2 stops9h 10m
Southwest
Wed 6/1711:55 pm
ONT
- MIA
2 stops13h 30m
Southwest
Deal found 3/2![Southwest logo]()
$467
This United Airlines deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/103:44 pm
MIA
- ONT
1 stop7h 58m
United Airlines
Tue 6/165:00 am
ONT
- MIA
1 stop8h 16m
United Airlines
Deal found 3/2![United Airlines logo]()
$487
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:53 pm
MIA
- ONT
1 stop8h 02m
United Airlines
Sun 7/265:00 am
ONT
- MIA
1 stop8h 15m
United Airlines
Deal found 3/3![United Airlines logo]()
$487
Last-minute flights from Miami to OntarioDiscover last-minute flight deals from Miami to Ontario. Data last updated March 7, 2026 and is based on user searches.
Discover last-minute flight deals from Miami to Ontario. Data last updated March 7, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Tue 4/147:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Deal found 3/7![Frontier logo]()
$207
This CheapOair deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Sat 4/117:40 pm
ONT
- MIA
1 stop13h 09m
Frontier
Deal found 3/3![Frontier logo]()
$211
This Booking.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:39 am
MIA
- ONT
1 stop11h 06m
Frontier
Mon 4/136:20 am
ONT
- MIA
1 stop20h 29m
Frontier
Deal found 3/6![Frontier logo]()
$202
This Frontier deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:39 am
MIA
- ONT
1 stop11h 06m
Frontier
Wed 4/157:44 pm
ONT
- MIA
1 stop8h 48m
Frontier
Deal found 3/4![Frontier logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:35 pm
MIA
- ONT
1 stop25h 10m
Multiple Airlines
Thu 4/168:26 am
ONT
- MIA
1 stop12h 43m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$217
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:29 pm
MIA
- ONT
1 stop13h 26m
Frontier
Tue 4/217:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Deal found 3/3![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:29 pm
MIA
- ONT
1 stop13h 26m
Frontier
Sun 4/196:15 am
ONT
- MIA
1 stop12h 04m
Frontier
Deal found 3/3![Frontier logo]()
$200
This Gotogate deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:29 pm
MIA
- ONT
1 stop13h 26m
Frontier
Fri 4/245:33 pm
ONT
- MIA
1 stop8h 32m
Frontier
Deal found 3/2![Frontier logo]()
$206
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/171:15 pm
MIA
- ONT
1 stop13h 43m
Frontier
Fri 4/245:33 pm
ONT
- MIA
1 stop8h 32m
Frontier
Deal found 3/5![Frontier logo]()
$222
This Booking.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:15 pm
MIA
- ONT
1 stop11h 40m
Frontier
Tue 4/2812:59 am
ONT
- MIA
1 stop25h 06m
Frontier
Deal found 3/4![Frontier logo]()
$213
One-way flights from Miami to OntarioSearch for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated March 7, 2026.
Search for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated March 7, 2026.
This Trip.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Deal found 3/3![Frontier logo]()
$62
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:50 am
MIA
- ONT
1 stop19h 05m
Frontier
Deal found 3/6![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:50 am
MIA
- ONT
1 stop19h 05m
Frontier
Deal found 3/6![Frontier logo]()
$68
This Trip.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
MIA
- ONT
1 stop19h 55m
Frontier
Deal found 3/2![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
MIA
- ONT
1 stop27h 31m
Frontier
Deal found 3/3![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Deal found 3/4![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
MIA
- ONT
1 stop19h 55m
Frontier
Deal found 3/5![Frontier logo]()
$87
This Trip.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:50 am
MIA
- ONT
1 stop19h 05m
Frontier
Deal found 3/4![Frontier logo]()
$89
Find flight deals from Miami to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Miami (MIA) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $199 (Frontier) |
One-way from | $62 (Trip.com) |
Popular in | November |
Cheapest in | August |
Average price | $416 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 7, 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
Cheapest round-trip
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 6/4
7:00 am-12:19 pm
1 stop8h 19m
Ontario
Sat 6/6
6:00 am-11:11 pm
2 stops14h 11m
$388
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 3/27
6:40 am-2:10 pm
1 stop10h 30m
Ontario
Mon 3/30
9:55 pm-11:00 am
1 stop10h 05m
$397
MiamiOntario
MIA - ONT
MIAONT
Miami
Mon 6/1
5:30 am-10:55 am
2 stops8h 25m
Ontario
Sun 6/14
2:40 pm-12:35 am
1 stop6h 55m
$422
Quickest round-trip
MiamiOntario
MIA - ONT
MIAONT
Miami
Tue 7/28
7:37 am-12:47 pm
1 stop8h 10m
Ontario
Thu 8/13
5:45 am-3:43 pm
1 stop6h 58m
$427
MiamiOntario
MIA - ONT
MIAONT
Miami
Tue 3/17
3:33 pm-9:00 pm
1 stop8h 27m
Ontario
Wed 3/18
5:09 pm-5:40 am
1 stop9h 31m
$437
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 3/20
6:40 am-2:10 pm
1 stop10h 30m
Ontario
Tue 3/24
11:05 am-10:15 pm
2 stops8h 10m
$443
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 8/20
3:58 pm-8:52 pm
1 stop7h 54m
Ontario
Wed 8/26
5:00 am-10:39 pm
2 stops14h 39m
$452
MiamiOntario
MIA - ONT
MIAONT
Miami
Thu 6/4
8:48 am-5:28 pm
2 stops11h 40m
Ontario
Sat 6/6
5:00 am-8:33 pm
2 stops12h 33m
$457
MiamiOntario
MIA - ONT
MIAONT
Miami
Wed 6/3
1:25 pm-7:35 pm
2 stops9h 10m
Ontario
Wed 6/17
11:55 pm-4:25 pm
2 stops13h 30m
$467
MiamiOntario
MIA - ONT
MIAONT
Miami
Wed 6/10
3:44 pm-8:42 pm
1 stop7h 58m
Ontario
Tue 6/16
5:00 am-4:16 pm
1 stop8h 16m
$487
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Miami to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Miami to Ontario in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Miami-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Miami-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Miami-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Miami-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Miami-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Miami to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Miami with our price prediction graph.
MIA-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Miami to Ontario
Prices
Delays
More
How often are flights from Miami to Ontario delayed?
About 0% of weekly flights between Miami and Ontario have experienced delays in the past year, with the average delay time being 0 minutes.
What is the most punctual flight time for Miami to Ontario flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What’s the top layover airport for flights from Miami to Ontario?
Share of 1-stop round-trip flights from Miami to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Miami to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Miami to Ontario?
Average round-trip fare for 1-stop flights from Miami to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Phoenix (PHX) is the most affordable 1-stop option, with an average round-trip price of $381.
What’s the fastest layover option from Miami to Ontario?
Shortest average travel time for 1-stop one-way flights from Miami to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 7h 24m.
Which airport typically offers the quickest layover for flights from Miami to Ontario?
Average layover duration for 1-stop one-way flights from Miami to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 0h 47m.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated March 7, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Miami to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Related info for your journey
Find useful and relevant information for your journey from Miami to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Miami to Ontario
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 7, 2026.
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Top 4 airlines flying from Miami to Ontario
Discover the top 4 airlines that operate flights from Miami to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$376 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$326 | Average$508 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$336 | Average$416 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$376 | Average$481 | FlexibilityNo cancel fee | On-timeN/A |