$60+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ONT
Mar 5 — Mar 121
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Miami to Ontario with Cheapflights
1. Tell us where you want to go
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Miami to Ontario
Cheapest
Best
Last-minute
One-way
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 February 3, 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 February 3, 2026.
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Tue 3/36:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Thu 3/52:08 pm
ONT
- MIA
1 stop12h 06m
Frontier
Deal found 2/1![Frontier logo]()
$194
This Frontier deal was found by Cheapflights users on 2/1. 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.
Tue 4/218:42 am
MIA
- ONT
1 stop7h 58m
Frontier
Wed 4/227:29 pm
ONT
- MIA
1 stop9h 03m
Frontier
Deal found 2/1![Frontier logo]()
$198
This Frontier deal was found by Cheapflights users on 2/1. 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.
Wed 4/158:42 am
MIA
- ONT
1 stop12h 52m
Frontier
Wed 4/292:44 pm
ONT
- MIA
1 stop13h 48m
Frontier
Deal found 2/1![Frontier logo]()
$200
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Tue 3/36:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Tue 3/106:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Deal found 2/1![Frontier logo]()
$206
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Tue 4/218:42 am
MIA
- ONT
1 stop7h 58m
Frontier
Wed 4/292:44 pm
ONT
- MIA
1 stop13h 48m
Frontier
Deal found 2/1![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Mon 3/27:17 pm
MIA
- ONT
2 stops29h 17m
Frontier
Mon 3/96:15 am
ONT
- MIA
1 stop8h 05m
Frontier
Deal found 2/1![Frontier logo]()
$213
This Gotogate deal was found by Cheapflights users on 2/2. 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 4/25:50 am
MIA
- ONT
1 stop21h 06m
Frontier
Tue 4/287:29 pm
ONT
- MIA
1 stop9h 03m
Frontier
Deal found 2/2![Frontier logo]()
$219
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Sat 2/216:00 am
ONT
- MIA
1 stop20h 14m
Frontier
Deal found 2/2![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/136:00 am
MIA
- ONT
2 stops20h 59m
Multiple Airlines
Tue 3/176:15 am
ONT
- MIA
1 stop20h 23m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$229
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Wed 3/116:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Deal found 2/2![Frontier logo]()
$230
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Sat 2/146:25 am
MIA
- ONT
1 stop20h 34m
Frontier
Sat 2/216:00 am
ONT
- MIA
1 stop20h 14m
Frontier
Deal found 2/1![Frontier logo]()
$232
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 February 3, 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 February 3, 2026.
This CheapOair deal was found by Cheapflights users on 1/31. 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.
Tue 3/36:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Fri 3/66:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Deal found 1/31![Frontier logo]()
$244
This Delta deal was found by Cheapflights users on 2/1. 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.
Wed 3/186:00 am
MIA
- ONT
1 stop8h 47m
Delta
Tue 3/2410:25 pm
ONT
- MIA
1 stop9h 11m
Delta
Deal found 2/1![Delta logo]()
$301
This Southwest deal was found by Cheapflights users on 2/2. 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 5/15:30 am
MIA
- ONT
2 stops8h 25m
Southwest
Sun 5/311:55 pm
ONT
- MIA
2 stops10h 15m
Southwest
Deal found 2/2![Southwest logo]()
$337
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Thu 2/192:08 pm
ONT
- MIA
1 stop12h 06m
Frontier
Deal found 2/2![Frontier logo]()
$277
This Delta deal was found by Cheapflights users on 2/1. 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.
Wed 3/46:43 am
MIA
- ONT
1 stop8h 24m
Delta
Tue 3/1010:25 pm
ONT
- MIA
1 stop9h 11m
Delta
Deal found 2/1![Delta logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:42 am
MIA
- ONT
1 stop29h 02m
Frontier
Sun 5/36:15 am
ONT
- MIA
1 stop16h 15m
Frontier
Deal found 2/2![Frontier logo]()
$297
This Delta deal was found by Cheapflights users on 2/1. 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.
Fri 3/66:00 am
MIA
- ONT
1 stop9h 02m
Delta
Wed 3/1112:57 pm
ONT
- MIA
1 stop8h 55m
Delta
Deal found 2/1![Delta logo]()
$314
This Frontier deal was found by Cheapflights users on 2/1. 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 2/2710:17 pm
MIA
- ONT
1 stop12h 09m
Frontier
Sun 3/12:08 pm
ONT
- MIA
1 stop12h 06m
Frontier
Deal found 2/1![Frontier logo]()
$325
This Delta deal was found by Cheapflights users on 2/1. 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.
Fri 3/66:00 am
MIA
- ONT
1 stop9h 02m
Delta
Sat 3/1410:25 pm
ONT
- MIA
1 stop7h 56m
Delta
Deal found 2/1![Delta logo]()
$327
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/76:18 pm
MIA
- ONT
1 stop8h 06m
Frontier
Sun 2/86:20 am
ONT
- MIA
1 stop14h 39m
Frontier
Deal found 2/2![Frontier logo]()
$326
This Delta deal was found by Cheapflights users on 2/1. 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.
Fri 3/67:15 am
MIA
- ONT
1 stop7h 47m
Delta
Mon 3/910:25 pm
ONT
- MIA
1 stop7h 55m
Delta
Deal found 2/1![Delta logo]()
$327
Last-minute flights from Miami to OntarioDiscover last-minute flight deals from Miami to Ontario. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Miami to Ontario. Data last updated February 3, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Sat 2/146:25 am
MIA
- ONT
1 stop20h 34m
Frontier
Sat 2/216:00 am
ONT
- MIA
1 stop20h 14m
Frontier
Deal found 2/1![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 2/1. 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.
Sat 2/146:25 am
MIA
- ONT
1 stop20h 34m
Frontier
Mon 2/236:10 am
ONT
- MIA
1 stop20h 38m
Frontier
Deal found 2/1![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Sat 2/146:25 am
MIA
- ONT
1 stop28h 34m
Frontier
Tue 2/178:35 am
ONT
- MIA
1 stop17h 39m
Frontier
Deal found 2/1![Frontier logo]()
$242
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Sat 2/216:00 am
ONT
- MIA
1 stop20h 14m
Frontier
Deal found 2/2![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Mon 3/27:17 pm
MIA
- ONT
2 stops29h 17m
Frontier
Mon 3/96:15 am
ONT
- MIA
1 stop8h 05m
Frontier
Deal found 2/1![Frontier logo]()
$213
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Tue 3/36:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Thu 3/52:08 pm
ONT
- MIA
1 stop12h 06m
Frontier
Deal found 2/1![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Tue 3/36:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Tue 3/106:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Deal found 2/1![Frontier logo]()
$206
This CheapOair deal was found by Cheapflights users on 1/31. 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.
Tue 3/36:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Fri 3/66:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Deal found 1/31![Frontier logo]()
$244
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Wed 3/116:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Deal found 2/2![Frontier logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Sat 3/75:50 am
MIA
- ONT
1 stop21h 09m
Frontier
Thu 3/126:15 am
ONT
- MIA
2 stops14h 42m
Frontier
Deal found 2/1![Frontier logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/136:00 am
MIA
- ONT
2 stops20h 59m
Multiple Airlines
Tue 3/176:15 am
ONT
- MIA
1 stop20h 23m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$229
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 February 3, 2026.
Search for one-way flight options from Miami to Ontario. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Trip.com deal was found by Cheapflights users on 2/1. 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 3/46:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Deal found 2/1![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 2/1. 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.
Sun 3/85:50 am
MIA
- ONT
1 stop21h 09m
Frontier
Deal found 2/1![Frontier logo]()
$72
This Mytrip deal was found by Cheapflights users on 2/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:25 am
MIA
- ONT
1 stop18h 09m
Frontier
Deal found 2/3![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 2/1. 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.
Mon 4/208:42 am
MIA
- ONT
1 stop14h 22m
Frontier
Deal found 2/1![Frontier logo]()
$83
This Trip.com deal was found by Cheapflights users on 2/2. 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.
Thu 3/56:45 am
MIA
- ONT
1 stop20h 14m
Frontier
Deal found 2/2![Frontier logo]()
$90
This Trip.com deal was found by Cheapflights users on 2/3. 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 4/217:50 am
MIA
- ONT
1 stop19h 05m
Frontier
Deal found 2/3![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:42 am
MIA
- ONT
1 stop7h 58m
Frontier
Deal found 2/2![Frontier logo]()
$99
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:42 am
MIA
- ONT
1 stop7h 58m
Frontier
Deal found 2/2![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1811:34 am
MIA
- ONT
1 stop8h 04m
Frontier
Deal found 2/2![Frontier logo]()
$101
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $194 (CheapOair) |
One-way from | $60 (Trip.com) |
Popular in | November |
Cheapest in | February |
Average price | $322 |
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 February 3, 2026.
Use the filters below to find and compare flights from Miami to Ontario that are best for you.
Fly from
Miami
Fly to
Ontario
Route
Depart
Return
Price
MiamiOntario
MIA - ONT
MIAONT
Miami
Tue 3/3
6:25 am-9:34 pm
1 stop18h 09m
Ontario
Fri 3/6
6:15 am-5:38 am
1 stop20h 23m
$244
MiamiOntario
MIA - ONT
MIAONT
Miami
Tue 2/17
6:25 am-9:34 pm
1 stop18h 09m
Ontario
Thu 2/19
2:08 pm-5:14 am
1 stop12h 06m
$277
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 5/1
8:42 am-10:44 am
1 stop29h 02m
Ontario
Sun 5/3
6:15 am-1:30 am
1 stop16h 15m
$297
MiamiOntario
MIA - ONT
MIAONT
Miami
Wed 3/18
6:00 am-11:47 am
1 stop8h 47m
Ontario
Tue 3/24
10:25 pm-10:36 am
1 stop9h 11m
$301
MiamiOntario
MIA - ONT
MIAONT
Miami
Wed 3/4
6:43 am-12:07 pm
1 stop8h 24m
Ontario
Tue 3/10
10:25 pm-10:36 am
1 stop9h 11m
$301
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 3/6
6:00 am-12:02 pm
1 stop9h 02m
Ontario
Wed 3/11
12:57 pm-12:52 am
1 stop8h 55m
$314
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 2/27
10:17 pm-7:26 am
1 stop12h 09m
Ontario
Sun 3/1
2:08 pm-5:14 am
1 stop12h 06m
$325
MiamiOntario
MIA - ONT
MIAONT
Miami
Sat 2/7
6:18 pm-11:24 pm
1 stop8h 06m
Ontario
Sun 2/8
6:20 am-11:59 pm
1 stop14h 39m
$326
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 3/6
6:00 am-12:02 pm
1 stop9h 02m
Ontario
Sat 3/14
10:25 pm-9:21 am
1 stop7h 56m
$327
MiamiOntario
MIA - ONT
MIAONT
Miami
Fri 3/6
7:15 am-12:02 pm
1 stop7h 47m
Ontario
Mon 3/9
10:25 pm-9:20 am
1 stop7h 55m
$327
Showing 1-10 of 20 results
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- 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 80% 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.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $303.
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 Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 1h 32m.
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 February 3, 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.
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Food
7.0
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Miami to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$326 | Average$508 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$336 | Average$436 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$376 | Average$481 | FlexibilityNo cancel fee | On-timeN/A |