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$66+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DTT
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap 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 January 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:40 am
ONT
-
DTW
1 stop12h 15m
Frontier
Tue 3/1011:54 am
DTW
-
ONT
1 stop15h 05m
Frontier
Deal found 1/18$126
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/108:36 am
ONT
-
DTW
1 stop12h 19m
Frontier
Wed 2/188:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Deal found 1/20$140
This CheapOair deal was found by Cheapflights users on 1/20. 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.
Tue 3/38:40 am
ONT
-
DTW
1 stop12h 15m
Frontier
Wed 3/48:30 am
DTW
-
ONT
1 stop28h 04m
Frontier
Deal found 1/20$148
This CheapOair deal was found by Cheapflights users on 1/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/248:35 am
ONT
-
DTW
1 stop12h 20m
Frontier
Wed 2/258:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Deal found 1/19$149
This Booking.com deal was found by Cheapflights users on 1/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:40 am
ONT
-
DTW
1 stop12h 00m
Frontier
Wed 3/48:30 am
DTW
-
ONT
1 stop28h 04m
Frontier
Deal found 1/18$159
This Frontier deal was found by Cheapflights users on 1/18. 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 2/108:36 am
ONT
-
DTW
1 stop12h 19m
Frontier
Tue 2/1710:32 am
DTW
-
ONT
1 stop14h 02m
Frontier
Deal found 1/18$164
This CheapOair deal was found by Cheapflights users on 1/20. 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.
Thu 2/266:05 am
ONT
-
DTW
1 stop14h 50m
Frontier
Tue 3/38:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Deal found 1/20$165
This Kiwi.com deal was found by Cheapflights users on 1/17. 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.
Thu 2/122:08 pm
ONT
-
DTW
1 stop6h 47m
Multiple Airlines
Tue 2/177:15 pm
DTW
-
ONT
1 stop20h 56m
Multiple Airlines
Deal found 1/17$173
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/108:36 am
ONT
-
DTW
2 stops10h 32m
Multiple Airlines
Wed 2/188:30 am
DTW
-
ONT
1 stop16h 04m
Multiple Airlines
Deal found 1/20$179
This Frontier deal was found by Cheapflights users on 1/18. 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.
Thu 2/122:08 pm
ONT
-
DTW
1 stop6h 47m
Frontier
Tue 2/1710:32 am
DTW
-
ONT
1 stop14h 02m
Frontier
Deal found 1/18$180
This CheapOair deal was found by Cheapflights users on 1/17. 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 4/71:09 pm
ONT
-
DTW
1 stop14h 51m
Frontier
Mon 4/137:45 am
DTW
-
ONT
1 stop15h 22m
Frontier
Deal found 1/17$181

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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$126
(Kiwi.com)

One-way from

$66
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$569
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)
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 20, 2026.
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

Thu 2/12

2:08 pm-11:55 pm

1 stop6h 47m

Detroit Metropolitan Wayne County

Tue 2/17

10:32 am-9:34 pm

1 stop14h 02m

$180

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 2/10

8:36 am-10:08 pm

2 stops10h 32m

Detroit Metropolitan Wayne County

Tue 2/17

7:15 pm-6:22 pm

1 stop26h 07m

$210

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Fri 2/27

1:18 pm-9:50 am

1 stop17h 32m

Detroit Metropolitan Wayne County

Sat 3/7

11:54 am-11:59 pm

1 stop15h 05m

$234

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 3/3

11:58 pm-10:50 am

1 stop7h 52m

Detroit Metropolitan Wayne County

Tue 3/10

2:06 pm-10:07 pm

2 stops11h 01m

$262

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 3/17

6:15 am-10:59 am

1 stop25h 44m

Detroit Metropolitan Wayne County

Sun 3/22

11:54 am-11:59 pm

1 stop15h 05m

$276

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 4/15

1:20 pm-11:58 pm

1 stop7h 38m

Detroit Metropolitan Wayne County

Sat 4/18

12:15 pm-6:28 pm

1 stop9h 13m

$277

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 3/18

1:20 pm-11:59 pm

1 stop7h 39m

Detroit Metropolitan Wayne County

Tue 3/24

5:46 pm-11:51 pm

1 stop9h 05m

$277

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sat 3/14

1:20 pm-11:59 pm

1 stop7h 39m

Detroit Metropolitan Wayne County

Tue 3/24

2:36 pm-9:00 pm

1 stop9h 24m

$277

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 3/12

6:15 am-9:42 pm

1 stop12h 27m

Detroit Metropolitan Wayne County

Mon 3/16

9:50 pm-3:54 pm

2 stops21h 04m

$284

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sat 3/14

1:20 pm-11:59 pm

1 stop7h 39m

Detroit Metropolitan Wayne County

Mon 3/23

5:46 pm-11:51 pm

1 stop9h 05m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Showing 1-10 of 20 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 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 Expedia the most. Expedia 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.

How much does it cost to fly round-trip from Ontario to Detroit?

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 January 20, 2026.
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
4,267 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,076 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,180 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,164 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.7
Fair
3,056 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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 Frontier fly from Ontario to Detroit in about 12h 15m. The time it takes to get you to your destination can typically vary by up to . Ontario and Detroit are separated by a distance of 1929 mi.

  • 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 $128. Additional round-trip tickets that might be worth considering are offered by Frontier and American Airlines, with the lowest prices starting at $180 and $272, respectively. These flights start at 70% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Detroit one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $82. Delta flights start at $146 while deals on Southwest start at $148 one-way.

  • 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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Alternative routes for Ontario to Detroit

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$128Average$177FlexibilityNo cancel feeOn-time65%
FrontierCheapest$180Average$285FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$272Average$442FlexibilityNo cancel feeOn-time71%
DeltaCheapest$292Average$439FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$321Average$496FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$352Average$477FlexibilityNo cancel feeOn-time63%

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