$81+ Cheap flights from Ontario to Detroit (ONT - DTT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DTT
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Detroit 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 Ontario to Detroit
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Best
Last-minute
One-way
Cheapest flights from Ontario to DetroitExplore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Wed 10/1411:52 am -
1 stop9h 03m
Wed 10/218:35 pm -
1 stop6h 15m
Deal found 9/3![Frontier logo]()
$168
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Sat 10/176:15 am -
1 stop6h 19m
Wed 10/218:35 pm -
1 stop6h 15m
Deal found 9/3![Frontier logo]()
$179
This Super.com deal was found by Cheapflights users on 9/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:52 am -
1 stop8h 59m
Sat 11/77:00 am -
1 stop6h 42m
Deal found 9/3![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:15 am -
1 stop6h 19m
Tue 10/208:35 pm -
1 stop6h 15m
Deal found 9/4![Frontier logo]()
$185
This Expedia deal was found by Cheapflights users on 9/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:25 am -
1 stop14h 26m
Mon 11/28:35 pm -
1 stop17h 00m
Deal found 9/4![Frontier logo]()
$195
This Expedia deal was found by Cheapflights users on 9/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:15 am -
1 stop14h 40m
Sat 10/177:08 am -
1 stop6h 21m
Deal found 9/3![Frontier logo]()
$202
This Super.com deal was found by Cheapflights users on 9/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:25 am -
1 stop6h 09m
Mon 11/98:35 pm -
1 stop17h 00m
Deal found 9/3![Frontier logo]()
$211
This Booking.com deal was found by Cheapflights users on 9/4. 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.
Sat 10/36:15 am -
1 stop6h 13m
Tue 10/208:35 pm -
1 stop6h 15m
Deal found 9/4![Frontier logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:24 pm -
1 stop29h 31m
Wed 10/148:35 pm -
1 stop6h 15m
Deal found 9/4![Frontier logo]()
$221
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Wed 9/306:15 am -
1 stop6h 13m
Mon 10/512:33 pm -
1 stop8h 15m
Deal found 9/3![Frontier logo]()
$223
Best flights from Ontario to DetroitDiscover carefully curated flight deals from Ontario to Detroit that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from Ontario to Detroit that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This Frontier deal was found by Cheapflights users on 9/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:03 pm -
1 stop10h 50m
Mon 10/127:15 am -
1 stop7h 01m
Deal found 9/7![Frontier logo]()
$356
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:13 pm -
1 stop12h 27m
Tue 10/137:00 am -
2 stops13h 05m
Deal found 9/7![Alaska Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:00 am -
2 stops12h 40m
Sat 10/312:30 pm -
2 stops11h 28m
Deal found 9/7![United Airlines logo]()
$548
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:40 am -
2 stops9h 40m
Fri 10/231:55 pm -
2 stops10h 30m
Deal found 9/7![Southwest logo]()
$563
This Delta deal was found by Cheapflights users on 9/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop6h 14m
Wed 10/148:18 pm -
1 stop6h 37m
Deal found 9/4![Delta logo]()
$569
This Frontier deal was found by Cheapflights users on 9/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:25 pm -
1 stop8h 35m
Tue 10/206:30 am -
2 stops13h 18m
Deal found 9/7![Frontier logo]()
$397
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:25 am -
2 stops19h 15m
Wed 10/147:00 am -
2 stops13h 05m
Deal found 9/7![Alaska Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Tue 9/226:08 am -
2 stops8h 57m
Sat 9/265:30 am -
2 stops10h 16m
Deal found 9/3![United Airlines logo]()
$556
This Southwest deal was found by Cheapflights users on 9/5. 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 11/207:30 am -
2 stops9h 05m
Tue 11/246:05 am -
2 stops8h 45m
Deal found 9/5![Southwest logo]()
$575
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:09 pm -
1 stop10h 25m
Fri 11/277:01 am -
1 stop11h 04m
Deal found 9/5![Alaska Airlines logo]()
$563
This Southwest deal was found by Cheapflights users on 9/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/21:05 pm -
2 stops7h 30m
Sun 10/46:40 am -
2 stops8h 30m
Deal found 9/4![Southwest logo]()
$579
Last-minute flights from Ontario to DetroitDiscover last-minute flight deals from Ontario to Detroit. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Detroit. Data last updated September 8, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Wed 9/306:15 am -
1 stop6h 13m
Mon 10/512:33 pm -
1 stop8h 15m
Deal found 9/3![Frontier logo]()
$223
This Booking.com deal was found by Cheapflights users on 9/4. 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.
Sat 10/36:15 am -
1 stop6h 13m
Tue 10/208:35 pm -
1 stop6h 15m
Deal found 9/4![Frontier logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:24 pm -
1 stop29h 31m
Wed 10/148:35 pm -
1 stop6h 15m
Deal found 9/4![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:24 pm -
1 stop29h 31m
Wed 11/47:00 am -
1 stop6h 35m
Deal found 9/6![Frontier logo]()
$235
This Expedia deal was found by Cheapflights users on 9/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:15 am -
1 stop14h 40m
Sat 10/177:08 am -
1 stop6h 21m
Deal found 9/3![Frontier logo]()
$202
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Wed 10/1411:52 am -
1 stop9h 03m
Wed 10/218:35 pm -
1 stop6h 15m
Deal found 9/3![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:15 am -
1 stop6h 19m
Tue 10/208:35 pm -
1 stop6h 15m
Deal found 9/4![Frontier logo]()
$185
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Sat 10/176:15 am -
1 stop6h 19m
Wed 10/218:35 pm -
1 stop6h 15m
Deal found 9/3![Frontier logo]()
$179
This Expedia deal was found by Cheapflights users on 9/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:25 am -
1 stop14h 26m
Mon 11/28:35 pm -
1 stop17h 00m
Deal found 9/4![Frontier logo]()
$195
One-way flights from Ontario to DetroitSearch for one-way flight options from Ontario to Detroit. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from Ontario to Detroit. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:25 am -
1 stop6h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:25 am -
1 stop6h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 9/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:15 am -
1 stop14h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Tue 9/296:15 am -
1 stop30h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$112
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:00 am -
1 stop18h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:15 pm -
2 stops43h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$122
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:52 am -
1 stop24h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:52 am -
1 stop24h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$126
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:15 am -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$130
This Super.com deal was found by Cheapflights users on 9/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:15 am -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$131
Find flight deals from Ontario to Detroit
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Detroit (DTT). 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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $168 (Trip.com) |
One-way from | $81 (Super.com) |
Popular in | February |
Cheapest in | December |
Average price | $404 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Detroit 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 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from Ontario to Detroit that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Mon 9/28
7:46 pm-9:52 am
1 stop11h 06m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$175
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Mon 11/23
6:00 am-3:20 pm
1 stop6h 20m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$209
Quickest round-trip
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Tue 1/5
6:00 am-3:14 pm
1 stop6h 14m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$283
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Wed 1/6
7:00 am-6:48 pm
1 stop8h 48m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$283
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Fri 11/20
7:30 am-7:00 pm
1 stop8h 30m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$293
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Fri 11/20
1:15 pm-11:58 pm
1 stop7h 43m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$303
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Sun 12/20
5:38 pm-6:21 am
1 stop9h 43m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$303
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Tue 12/22
10:29 pm-9:32 am
1 stop8h 03m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$323
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Wed 11/25
5:00 am-8:30 pm
2 stops12h 30m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$338
OntarioDetroit
ONT Ontario - DTW Detroit Metropolitan Wayne County
ONTDTW
Ontario
Fri 1/1
6:27 pm-9:28 am
2 stops12h 01m
Detroit Metropolitan Wayne County
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$348
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Ontario to Detroit
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 Detroit in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Detroit flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Detroit flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Detroit flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Detroit 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-Detroit 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 Detroit
Have a flexible travel schedule? Discover the best time to fly to Detroit from Ontario with our price prediction graph.
ONT-DTT
ONT-DTW
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 Detroit
ONT-DTT
ONT-DTW
What is the cheapest month to book a flight from Ontario to Detroit?
Currently, December is the cheapest month in which you can book a flight from Ontario to Detroit (average of $369). Flying from Ontario to Detroit in February is currently the most expensive (average of $763). 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.
How much does it cost to fly round-trip from Ontario to Detroit?
Airfare is below average for this route at the moment.
Ontario to Detroit flights typically cost between $344 and $480 in October.The cheapest round-trip price found within the last 5 days was $168 on Frontier (Oct 14-Oct 21).
How far ahead should I book a flight from Ontario to Detroit?
Booking 35 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Detroit. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Detroit
Get insights into the airlines that provide service to Detroit. 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 Detroit. Reviews last updated September 8, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Detroit. 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.
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Food
7.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to Detroit. 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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Book flights to Detroit if you plan to visit one of these locationsRoseville
Port Huron
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Ontario and Detroit flights
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Top 5 airlines flying from Ontario to Detroit
Discover the top 5 airlines that operate flights from Ontario to Detroit. 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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$216 | Average$338 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$277 | Average$499 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$310 | Average$504 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$338 | Average$567 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$340 | Average$571 | FlexibilityNo cancel fee | On-time69% |