$103+ Cheap flights from Ontario to Miami (ONT - MIA)
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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MIA
Apr 17 — Apr 241
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Miami with Cheapflights
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Cheapest flights from Ontario to MiamiExplore the most affordable flight options available from Ontario to Miami. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
Explore the most affordable flight options available from Ontario to Miami. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
This Frontier deal was found by Cheapflights users on 3/15. 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 4/147:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Tue 4/218:42 am
MIA
- ONT
1 stop13h 07m
Frontier
Deal found 3/15![Frontier logo]()
$210
This Mytrip deal was found by Cheapflights users on 3/16. 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 5/124:39 pm
ONT
- MIA
1 stop11h 21m
Frontier
Sat 5/168:10 pm
MIA
- ONT
1 stop21h 59m
Frontier
Deal found 3/16![Frontier logo]()
$214
This Frontier deal was found by Cheapflights users on 3/14. 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 4/258:00 am
ONT
- MIA
1 stop10h 40m
Frontier
Wed 4/298:42 am
MIA
- ONT
1 stop13h 07m
Frontier
Deal found 3/14![Frontier logo]()
$215
This Booking.com deal was found by Cheapflights users on 3/16. 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.
Wed 5/68:30 am
ONT
- MIA
1 stop10h 15m
Frontier
Mon 5/119:41 pm
MIA
- ONT
1 stop21h 03m
Frontier
Deal found 3/16![Frontier logo]()
$217
This Frontier deal was found by Cheapflights users on 3/14. 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 4/188:00 am
ONT
- MIA
1 stop10h 40m
Frontier
Sat 4/251:55 pm
MIA
- ONT
1 stop11h 42m
Frontier
Deal found 3/14![Frontier logo]()
$219
This Frontier deal was found by Cheapflights users on 3/13. 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 4/166:15 am
ONT
- MIA
1 stop11h 44m
Frontier
Thu 4/233:15 pm
MIA
- ONT
1 stop11h 40m
Frontier
Deal found 3/13![Frontier logo]()
$220
This CheapOair deal was found by Cheapflights users on 3/17. 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 4/2812:59 am
ONT
- MIA
1 stop25h 06m
Frontier
Wed 5/67:00 pm
MIA
- ONT
1 stop23h 09m
Frontier
Deal found 3/17![Frontier logo]()
$221
This Booking.com deal was found by Cheapflights users on 3/15. 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 5/78:06 pm
ONT
- MIA
1 stop25h 38m
Frontier
Sun 5/106:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Deal found 3/15![Frontier logo]()
$222
This Booking.com deal was found by Cheapflights users on 3/15. 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.
Sat 5/27:44 pm
ONT
- MIA
1 stop8h 48m
Frontier
Sat 5/168:10 pm
MIA
- ONT
1 stop21h 59m
Frontier
Deal found 3/15![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 3/17. 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 5/58:30 am
ONT
- MIA
1 stop10h 15m
Frontier
Mon 5/119:41 pm
MIA
- ONT
1 stop24h 51m
Frontier
Deal found 3/17![Frontier logo]()
$226
This Booking.com deal was found by Cheapflights users on 3/17. 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.
Sat 5/99:15 am
ONT
- MIA
1 stop9h 30m
Frontier
Sun 5/176:00 am
MIA
- ONT
1 stop28h 35m
Frontier
Deal found 3/17![Frontier logo]()
$227
This Booking.com deal was found by Cheapflights users on 3/15. 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 4/168:26 am
ONT
- MIA
1 stop12h 43m
Frontier
Wed 4/228:42 am
MIA
- ONT
1 stop13h 07m
Frontier
Deal found 3/15![Frontier logo]()
$228
Best flights from Ontario to MiamiDiscover carefully curated flight deals from Ontario to Miami that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
Discover carefully curated flight deals from Ontario to Miami that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
This Delta deal was found by Cheapflights users on 3/14. 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.
Mon 4/610:25 pm
ONT
- MIA
1 stop9h 19m
Delta
Tue 4/147:04 am
MIA
- ONT
1 stop7h 32m
Delta
Deal found 3/14![Delta logo]()
$291
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Sat 4/255:10 am
ONT
- MIA
2 stops14h 18m
United Airlines
Wed 4/297:40 am
MIA
- ONT
1 stop7h 56m
United Airlines
Deal found 3/17![United Airlines logo]()
$378
This Southwest deal was found by Cheapflights users on 3/15. 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.
Sun 5/3111:55 pm
ONT
- MIA
2 stops10h 15m
Southwest
Fri 6/123:05 pm
MIA
- ONT
1 stop10h 20m
Southwest
Deal found 3/15![Southwest logo]()
$380
This Delta deal was found by Cheapflights users on 3/14. 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 5/266:00 am
ONT
- MIA
2 stops10h 58m
Delta
Wed 6/312:40 pm
MIA
- ONT
2 stops12h 08m
Delta
Deal found 3/14![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 3/16. 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 5/275:45 am
ONT
- MIA
1 stop7h 02m
United Airlines
Wed 6/104:53 pm
MIA
- ONT
1 stop8h 02m
United Airlines
Deal found 3/16![United Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 3/14. 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 5/511:53 am
ONT
- MIA
2 stops15h 02m
Delta
Mon 5/116:00 am
MIA
- ONT
1 stop7h 57m
Delta
Deal found 3/14![Delta logo]()
$408
This United Airlines deal was found by Cheapflights users on 3/16. 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.
Sat 4/256:05 am
ONT
- MIA
1 stop9h 23m
United Airlines
Sun 5/247:37 am
MIA
- ONT
1 stop8h 10m
United Airlines
Deal found 3/16![United Airlines logo]()
$476
This Delta deal was found by Cheapflights users on 3/16. 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 4/25:09 pm
ONT
- MIA
1 stop9h 41m
Delta
Wed 4/87:05 am
MIA
- ONT
1 stop8h 18m
Delta
Deal found 3/16![Delta logo]()
$476
Last-minute flights from Ontario to MiamiDiscover last-minute flight deals from Ontario to Miami. Data last updated March 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Miami. Data last updated March 18, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/17. 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 3/316:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Wed 4/87:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Deal found 3/17![Frontier logo]()
$226
This Mytrip deal was found by Cheapflights users on 3/13. 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.
Wed 4/15:18 pm
ONT
- MIA
1 stop13h 26m
Frontier
Wed 4/87:00 am
MIA
- ONT
1 stop19h 56m
Frontier
Deal found 3/13![Frontier logo]()
$229
This Frontier deal was found by Cheapflights users on 3/17. 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 4/147:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Tue 4/218:42 am
MIA
- ONT
1 stop13h 07m
Frontier
Deal found 3/17![Frontier logo]()
$210
This Booking.com deal was found by Cheapflights users on 3/15. 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 4/147:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Thu 4/167:00 am
MIA
- ONT
1 stop27h 31m
Frontier
Deal found 3/15![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 3/16. 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 4/157:44 pm
ONT
- MIA
1 stop8h 48m
Frontier
Fri 4/171:15 pm
MIA
- ONT
1 stop13h 43m
Frontier
Deal found 3/16![Frontier logo]()
$230
This Frontier deal was found by Cheapflights users on 3/13. 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 4/166:15 am
ONT
- MIA
1 stop11h 44m
Frontier
Thu 4/233:15 pm
MIA
- ONT
1 stop11h 40m
Frontier
Deal found 3/13![Frontier logo]()
$220
This Booking.com deal was found by Cheapflights users on 3/15. 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 4/168:26 am
ONT
- MIA
1 stop12h 43m
Frontier
Wed 4/228:42 am
MIA
- ONT
1 stop13h 07m
Frontier
Deal found 3/15![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 3/14. 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 4/188:00 am
ONT
- MIA
1 stop10h 40m
Frontier
Sat 4/251:55 pm
MIA
- ONT
1 stop11h 42m
Frontier
Deal found 3/14![Frontier logo]()
$219
This Booking.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/187:44 pm
ONT
- MIA
1 stop8h 48m
Frontier
Mon 4/207:00 am
MIA
- ONT
1 stop19h 55m
Frontier
Deal found 3/14![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 3/16. 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 4/258:00 am
ONT
- MIA
1 stop10h 40m
Frontier
Wed 4/298:42 am
MIA
- ONT
1 stop13h 07m
Frontier
Deal found 3/16![Frontier logo]()
$215
This Booking.com deal was found by Cheapflights users on 3/16. 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 4/287:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Wed 5/66:00 am
MIA
- ONT
1 stop20h 49m
Frontier
Deal found 3/16![Frontier logo]()
$217
This CheapOair deal was found by Cheapflights users on 3/17. 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 4/2812:59 am
ONT
- MIA
1 stop25h 06m
Frontier
Wed 5/67:00 pm
MIA
- ONT
1 stop23h 09m
Frontier
Deal found 3/17![Frontier logo]()
$221
One-way flights from Ontario to MiamiSearch for one-way flight options from Ontario to Miami. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
Search for one-way flight options from Ontario to Miami. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
This Trip.com deal was found by Cheapflights users on 3/13. 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 4/1312:59 am
ONT
- MIA
1 stop25h 06m
Frontier
Deal found 3/13![Frontier logo]()
$103
This Super.com deal was found by Cheapflights users on 3/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:44 pm
ONT
- MIA
1 stop8h 38m
Frontier
Deal found 3/15![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 3/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:33 pm
ONT
- MIA
1 stop8h 32m
Frontier
Deal found 3/15![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 3/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:18 pm
ONT
- MIA
1 stop13h 26m
Frontier
Deal found 3/17![Frontier logo]()
$110
This Super.com deal was found by Cheapflights users on 3/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:15 am
ONT
- MIA
1 stop20h 23m
Frontier
Deal found 3/17![Frontier logo]()
$114
This Super.com deal was found by Cheapflights users on 3/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:40 pm
ONT
- MIA
1 stop13h 09m
Frontier
Deal found 3/16![Frontier logo]()
$115
This CheapOair deal was found by Cheapflights users on 3/17. 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.
Thu 4/236:15 am
ONT
- MIA
1 stop13h 49m
Frontier
Deal found 3/17![Frontier logo]()
$116
This Frontier deal was found by Cheapflights users on 3/15. 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 4/275:33 pm
ONT
- MIA
1 stop8h 32m
Frontier
Deal found 3/15![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 5/910:50 am
ONT
- MIA
2 stops23h 38m
Frontier
Deal found 3/17![Frontier logo]()
$128
Find flight deals from Ontario to Miami
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Miami (MIA). 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 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $210 (Frontier) |
One-way from | $103 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $463 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Miami 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 18, 2026.
Use the filters below to find and compare flights from Ontario to Miami that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Mon 4/6
10:25 pm-10:44 am
1 stop9h 19m
Miami
Tue 4/14
7:04 am-11:36 am
1 stop7h 32m
$291
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Tue 5/26
6:00 am-7:58 pm
2 stops10h 58m
Miami
Wed 6/3
12:40 pm-9:48 pm
2 stops12h 08m
$303
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Sat 4/25
5:10 am-10:28 pm
2 stops14h 18m
Miami
Wed 4/29
7:40 am-12:36 pm
1 stop7h 56m
$378
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Sun 5/31
11:55 pm-1:10 pm
2 stops10h 15m
Miami
Fri 6/12
3:05 pm-10:25 pm
1 stop10h 20m
$380
Quickest round-trip
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Wed 5/27
5:45 am-3:47 pm
1 stop7h 02m
Miami
Wed 6/10
4:53 pm-9:55 pm
1 stop8h 02m
$393
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Tue 5/5
11:53 am-5:55 am
2 stops15h 02m
Miami
Mon 5/11
6:00 am-10:57 am
1 stop7h 57m
$408
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Sat 4/25
6:05 am-6:28 pm
1 stop9h 23m
Miami
Sun 5/24
7:37 am-12:47 pm
1 stop8h 10m
$476
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Thu 4/2
5:09 pm-5:50 am
1 stop9h 41m
Miami
Wed 4/8
7:05 am-12:23 pm
1 stop8h 18m
$476
Cheapest one-way
Quickest one-way
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Mon 4/6
10:25 pm-9:20 am
1 stop7h 55m
$141
OntarioMiami
ONT - MIA
ONTMIA
Ontario
Wed 4/22
5:05 pm-5:27 am
1 stop9h 22m
$147
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Ontario to Miami
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 Ontario to Miami 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 Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Miami flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Miami flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Miami flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Miami 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 Ontario-Miami 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 Ontario to Miami
Have a flexible travel schedule? Discover the best time to fly to Miami from Ontario with our price prediction graph.
ONT-MIA
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 Ontario to Miami
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How far ahead should I book a flight from Ontario to Miami?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Miami. Price data was last updated on March 13, 2026.
Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Miami. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Ontario to Miami?
Currently, May is the cheapest month in which you can book a flight from Ontario to Miami (average of $95). Flying from Ontario to Miami in April is currently the most expensive (average of $175). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What’s the top layover airport for flights from Ontario to Miami?
Share of 1-stop round-trip flights from Ontario to Miami 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 Ontario to Miami on Cheapflights.
What’s the cheapest layover airport for flights from Ontario to Miami?
Average round-trip fare for 1-stop flights from Ontario to Miami, 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 $368.
What’s the fastest layover option from Ontario to Miami?
Shortest average travel time for 1-stop one-way flights from Ontario to Miami, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Houston (IAH) have the shortest average one-way travel time for 1-stop routes: 8h 45m.
Which airport typically offers the quickest layover for flights from Ontario to Miami?
Average layover duration for 1-stop one-way flights from Ontario to Miami, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 2h 07m.
Reviews of airlines servicing Miami
Get insights into the airlines that provide service to Miami. 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 Miami. Reviews last updated March 18, 2026.
Read through reviews of airlines operating flights from Ontario to Miami, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Miami. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Miami?
Book flights to Miami if you plan to visit one of these locationsSunny Isles Beach
Hollywood
Coral Gables
Dania Beach
Plantation
Doral
Miramar
Miami Springs
Sunrise
Palm Beach
Marathon
Hialeah
Miami Lakes
Deerfield Beach
Oakland Park
Tamarac
Aventura
Boynton Beach
Bonita Springs
Homestead
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ontario to Miami
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Complete your trip
Complete your trip to Miami by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Miami by cabin class
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Other flights to Miami
Explore flights to Miami departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 18, 2026.
Ontario and Miami flights
Browse other Ontario and Miami flight options. Last updated on March 18, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on March 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Ontario to Miami
Discover the top 5 airlines that operate flights from Ontario to Miami. 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 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$162 | Average$271 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$258 | Average$382 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$294 | Average$404 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$317 | Average$415 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$367 | Average$496 | FlexibilityNo cancel fee | On-time63% |