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$51+ Cheap flights from Ontario to Detroit (ONT - DTT)

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DTT
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Cheap 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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$127
(Kiwi.com)

One-way from

$51
(Trip.com)

Popular in

January

Cheapest in

September

Average price

$466
Provider with most accurate pricing for Ontario-Detroit (DTT) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Detroit (DTT) flights.
Search Deals
From Ontario to Detroit (DTT)
Search Deals
One-way flight from Ontario to Detroit (DTT)
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Highest demand for flights based on searches. 14% potential increase in price ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Ontario to Detroit

Cheapest flights from Ontario to Detroit
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 November 20, 2025.

This Frontier deal was found by Cheapflights users on 11/18. 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 12/246:00 pmONT - DTW
1 stop9h 54mFrontier
Wed 12/3112:29 pmDTW - ONT
1 stop8h 01mFrontier
Deal found 11/18$138
This CheapOair deal was found by Cheapflights users on 11/18. 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.
Fri 12/266:00 amONT - DTW
1 stop21h 54mFrontier
Sat 1/37:50 amDTW - ONT
1 stop18h 31mFrontier
Deal found 11/18$141
This Frontier deal was found by Cheapflights users on 11/18. 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 12/246:00 pmONT - DTW
1 stop9h 54mFrontier
Fri 1/94:43 pmDTW - ONT
1 stop10h 13mFrontier
Deal found 11/18$142
This Expedia deal was found by Cheapflights users on 11/19. 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.
Thu 12/256:07 pmONT - DTW
1 stop9h 47mFrontier
Wed 12/3112:29 pmDTW - ONT
1 stop8h 01mFrontier
Deal found 11/19$161
This CheapOair deal was found by Cheapflights users on 11/20. 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.
Mon 12/296:00 amONT - DTW
1 stop21h 54mFrontier
Mon 1/124:43 pmDTW - ONT
1 stop10h 13mFrontier
Deal found 11/20$182
This Expedia deal was found by Cheapflights users on 11/20. 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 12/246:00 amONT - DTW
1 stop21h 54mFrontier
Tue 1/67:51 amDTW - ONT
1 stop28h 59mFrontier
Deal found 11/20$184
This CheapOair deal was found by Cheapflights users on 11/18. 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.
Sun 12/72:59 pmONT - DTW
1 stop17h 00mFrontier
Thu 12/115:20 pmDTW - ONT
1 stop24h 05mFrontier
Deal found 11/18$188
This Frontier deal was found by Cheapflights users on 11/18. 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 12/226:00 pmONT - DTW
1 stop9h 54mFrontier
Wed 12/3112:29 pmDTW - ONT
1 stop8h 01mFrontier
Deal found 11/18$194
This Frontier deal was found by Cheapflights users on 11/18. 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 12/246:00 pmONT - DTW
1 stop9h 54mFrontier
Sun 1/47:50 amDTW - ONT
1 stop12h 52mFrontier
Deal found 11/18$205
This Frontier deal was found by Cheapflights users on 11/18. 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 12/236:17 pmONT - DTW
1 stop9h 37mFrontier
Fri 1/94:43 pmDTW - ONT
1 stop10h 13mFrontier
Deal found 11/18$209

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 2,558,603 searches. Data last updated November 20, 2025.
Use the filters below to find and compare flights from Ontario to Detroit that are best for you.

Fly from

Ontario

Fly to

Detroit

Route

Depart

Return

Price

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Fri 1/23

4:03 pm-4:19 pm

1 stop21h 16m

Detroit Metropolitan Wayne County

Tue 1/27

5:15 pm-3:08 pm

1 stop24h 53m

$264

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Fri 12/26

6:45 am-11:25 am

1 stop25h 40m

Detroit Metropolitan Wayne County

Tue 12/30

7:50 am-5:22 pm

1 stop12h 32m

$300

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 12/3

6:15 am-8:48 pm

1 stop11h 33m

Detroit Metropolitan Wayne County

Sun 12/7

8:53 pm-5:32 pm

1 stop23h 39m

$307

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sat 12/20

6:45 am-9:06 pm

1 stop11h 21m

Detroit Metropolitan Wayne County

Thu 12/25

7:50 am-5:22 pm

1 stop12h 32m

$308

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 2/5

11:53 am-4:19 pm

1 stop25h 26m

Detroit Metropolitan Wayne County

Sun 2/8

5:15 pm-10:59 am

1 stop20h 44m

$318

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 12/24

7:05 am-6:57 pm

1 stop8h 52m

Detroit Metropolitan Wayne County

Wed 1/7

8:00 am-12:16 pm

1 stop7h 16m

$319

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 12/10

7:05 am-4:54 pm

1 stop6h 49m

Detroit Metropolitan Wayne County

Wed 12/17

8:03 am-12:34 pm

1 stop7h 31m

$319

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 12/10

1:29 pm-12:20 am

1 stop7h 51m

Detroit Metropolitan Wayne County

Sat 12/13

4:50 pm-10:05 pm

1 stop8h 15m

$319

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 12/17

6:15 am-6:09 pm

2 stops32h 54m

Detroit Metropolitan Wayne County

Wed 12/24

12:20 pm-11:59 pm

1 stop14h 39m

$319

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 2/10

1:10 pm-11:59 pm

1 stop7h 49m

Detroit Metropolitan Wayne County

Tue 2/17

8:13 pm-11:53 pm

1 stop6h 40m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 22 results
1
2
3

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Detroit flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Detroit flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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

What is the cheapest month to book a flight from Ontario to Detroit?

Currently, February is the cheapest month in which you can book a flight from Ontario to Detroit (average of $99). Flying from Ontario to Detroit in June is currently the most expensive (average of $173). 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 is the cheapest time of day to fly from ONT to DTT?

Find hourly flight availability from Ontario to Detroit. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2025.

It’s optimal to fly from Ontario to Detroit in the afternoon. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the morning.

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 November 20, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,251 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,251 reviews
Southwest
8.0
Very good
4,251 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,002 reviews
Southwest
8.0
Very good
4,251 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,028 reviews
Southwest
8.0
Very good
4,251 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,047 reviews
Southwest
8.0
Very good
4,251 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,104 reviews
Southwest
8.0
Very good
4,251 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

  • How long is the flight from Ontario to Detroit?

    Airlines like Alaska Airlines and Frontier fly from Ontario to Detroit in about 21h 16m. The time it takes to get you to your destination can typically vary by up to 4h 24m. Ontario and Detroit are separated by a distance of 1929 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Detroit round-trip?

    Flying on Spirit Airlines is currently your cheapest option to Detroit, with prices starting at $147. Additional round-trip tickets that might be worth considering are offered by Frontier and Delta, with the lowest prices starting at $155 and $292, respectively. These flights start at 67% lower than the current average price 3 months from now.

  • Can I find deals for flights from Ontario to Detroit that include hotel bookings?

    Yes. In addition to deals on Ontario to Detroit flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Detroit?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Detroit.

  • Can I find deals for business class flights from Ontario to Detroit?

    Yes. Cheapflights offers flight deals from Ontario to Detroit by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Detroit?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Detroit (average of $99). Flying from Ontario to Detroit in June is currently the most expensive (average of $173). 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.

See more FAQs

Traveling to a place near Detroit?

Book flights to Detroit if you plan to visit one of these locations
Roseville
Port Huron

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Top 6 airlines flying from Ontario to Detroit

Discover the top 6 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 2,558,603 searches. Data last updated November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$147Average$177FlexibilityNo cancel feeOn-time65%
FrontierCheapest$155Average$272FlexibilityNo cancel feeOn-time62%
DeltaCheapest$292Average$477FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$310Average$502FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$394Average$550FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$408Average$624FlexibilityNo cancel feeOn-time69%

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