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$65+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DTT
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
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 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$138
(CheapOair)

One-way from

$65
(Frontier)

Popular in

April

Cheapest in

September

Average price

$500
Provider with most accurate pricing for Ontario-Detroit (DTT) flight deals.
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Provider most trusted by Cheapflights users for Ontario-Detroit (DTT) flights.
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From Ontario to Detroit (DTT)
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One-way flight from Ontario to Detroit (DTT)
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($12 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 3, 2025.

This CheapOair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:04 pmONT - DTW
1 stop25h 15mFrontier
Sun 12/75:20 pmDTW - ONT
1 stop24h 05mFrontier
Deal found 11/1$138
This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:04 pmONT - DTW
1 stop25h 15mMultiple Airlines
Tue 12/99:40 amDTW - ONT
1 stop14h 37mMultiple Airlines
Deal found 11/1$149
This CheapOair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:05 pmONT - DTW
1 stop25h 14mFrontier
Thu 11/2010:29 pmDTW - ONT
1 stop18h 57mFrontier
Deal found 11/1$176
This Trip.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/203:31 pmONT - DTW
1 stop11h 34mFrontier
Mon 12/110:29 pmDTW - ONT
1 stop25h 48mFrontier
Deal found 10/31$179
This CheapOair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2312:58 amONT - DTW
1 stop7h 45mFrontier
Mon 12/1511:44 amDTW - ONT
1 stop7h 49mFrontier
Deal found 11/1$206
This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:04 pmONT - DTW
1 stop25h 15mFrontier
Thu 12/187:50 amDTW - ONT
1 stop12h 32mFrontier
Deal found 11/2$208
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:04 pmONT - DTW
1 stop25h 15mMultiple Airlines
Tue 1/139:20 pmDTW - ONT
2 stops44h 13mMultiple Airlines
Deal found 11/1$211
This CheapOair deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/133:20 pmONT - DTW
1 stop21h 59mFrontier
Sat 1/37:50 amDTW - ONT
1 stop18h 31mFrontier
Deal found 11/1$214
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/285:06 pmONT - DTW
1 stop9h 59mMultiple Airlines
Fri 12/57:59 amDTW - ONT
1 stop11h 34mMultiple Airlines
Deal found 11/1$222

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 3, 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

Wed 11/19

12:58 am-11:43 am

1 stop7h 45m

Detroit Metropolitan Wayne County

Mon 12/1

10:29 pm-9:17 pm

1 stop25h 48m

$181

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Mon 11/24

5:06 pm-6:05 am

1 stop9h 59m

Detroit Metropolitan Wayne County

Mon 12/15

11:44 am-4:33 pm

1 stop7h 49m

$206

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 12/18

6:17 pm-6:54 am

1 stop9h 37m

Detroit Metropolitan Wayne County

Thu 12/25

7:50 am-5:22 pm

1 stop12h 32m

$306

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sat 12/20

5:16 pm-6:54 am

1 stop10h 38m

Detroit Metropolitan Wayne County

Tue 12/23

7:50 am-5:22 pm

1 stop12h 32m

$316

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 12/25

6:45 am-4:19 pm

1 stop6h 34m

Detroit Metropolitan Wayne County

Thu 1/1

10:56 am-3:21 pm

1 stop7h 25m

$316

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 12/18

6:17 pm-6:54 am

1 stop9h 37m

Detroit Metropolitan Wayne County

Tue 12/23

7:50 am-5:22 pm

1 stop12h 32m

$316

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 1/1

6:45 am-11:25 am

1 stop25h 40m

Detroit Metropolitan Wayne County

Sun 1/4

7:50 am-5:42 pm

1 stop12h 52m

$322

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 12/24

6:00 pm-6:54 am

1 stop9h 54m

Detroit Metropolitan Wayne County

Fri 1/2

12:29 pm-5:30 pm

1 stop8h 01m

$322

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sat 11/15

12:05 pm-8:20 pm

1 stop29h 15m

Detroit Metropolitan Wayne County

Mon 11/17

5:14 pm-11:50 pm

1 stop9h 36m

$325

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Fri 11/28

12:58 am-11:43 am

1 stop7h 45m

Detroit Metropolitan Wayne County

Sat 12/6

12:38 pm-4:33 pm

2 stops30h 55m

$326

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 22 results
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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 3, 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 3, 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
4,240 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

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
8,001 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

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
8,997 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

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
11,034 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

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
3,118 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

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 Frontier fly from Ontario to Detroit in about 7h 45m. 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 $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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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$147Average$177FlexibilityNo cancel feeOn-time65%
FrontierCheapest$155Average$268FlexibilityNo cancel feeOn-time62%
DeltaCheapest$292Average$484FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$324Average$503FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$394Average$539FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$408Average$624FlexibilityNo cancel feeOn-time69%

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