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$61+ Cheap flights from Detroit to Ontario (DTT - ONT)

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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
déc. 20 — déc. 271
sam. 12/20
sam. 12/27
1 adult, Economy
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Cheap flight deals from Detroit to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) to Ontario (ONT). 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 novembre 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$61
(Trip.com)

Popular in

June

Cheapest in

September

Average price

$395
Provider with most accurate pricing for Detroit (DTT)-Ontario flight deals.
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Provider most trusted by Cheapflights users for Detroit (DTT)-Ontario flights.
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From Detroit (DTT) to Ontario
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One-way flight from Detroit (DTT) to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 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 Detroit to Ontario

Cheapest flights from Detroit to Ontario
Explore the most affordable flight options available from Detroit to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on novembre 20, 2025.

This CheapOair deal was found by Cheapflights users on 11/17. 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.
jeu. 12/1810:01 pmDTW - ONT
1 stop28h 58mFrontier
mer. 12/246:00 pmONT - DTW
1 stop9h 54mFrontier
Deal found 11/17$138
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/811:44 amDTW - ONT
1 stop7h 49mFrontier
jeu. 12/1112:04 pmONT - DTW
1 stop25h 15mFrontier
Deal found 11/19$142
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/55:20 pmDTW - ONT
1 stop24h 05mFrontier
dim. 12/72:59 pmONT - DTW
1 stop17h 00mFrontier
Deal found 11/19$146
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.
lun. 12/1511:44 amDTW - ONT
1 stop7h 49mFrontier
jeu. 12/186:45 amONT - DTW
1 stop11h 21mFrontier
Deal found 11/18$180
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/1511:44 amDTW - ONT
1 stop7h 49mFrontier
mer. 12/246:00 pmONT - DTW
1 stop9h 54mFrontier
Deal found 11/19$194
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 12/3112:29 pmDTW - ONT
1 stop8h 01mFrontier
lun. 1/56:00 pmONT - DTW
1 stop9h 54mFrontier
Deal found 11/19$204
This CheapOair deal was found by Cheapflights users on 11/17. 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.
mar. 12/2310:01 pmDTW - ONT
1 stop28h 58mFrontier
ven. 12/266:00 amONT - DTW
1 stop21h 54mFrontier
Deal found 11/17$205
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/115:20 pmDTW - ONT
1 stop24h 05mFrontier
mer. 1/147:15 amONT - DTW
1 stop25h 09mFrontier
Deal found 11/19$210

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit to Ontario 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 novembre 20, 2025.
Use the filters below to find and compare flights from Detroit to Ontario that are best for you.

Fly from

Detroit

Fly to

Ontario

Route

Depart

Return

Price

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

ven. 1/2

7:01 pm-11:21 pm

2 stops31h 20m

Ontario

mar. 1/6

4:04 pm-4:59 am

1 stop9h 55m

$283

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 2/3

2:15 pm-9:05 pm

1 stop9h 50m

Ontario

sam. 2/7

3:30 pm-6:30 am

1 stop12h 00m

$313

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

dim. 2/1

5:15 pm-11:56 pm

1 stop9h 41m

Ontario

ven. 2/6

11:53 am-4:19 pm

1 stop25h 26m

$314

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

lun. 1/26

7:45 pm-1:56 pm

1 stop21h 11m

Ontario

jeu. 1/29

7:30 am-1:21 pm

1 stop26h 51m

$316

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mer. 1/21

5:15 pm-10:59 am

1 stop20h 44m

Ontario

sam. 1/24

11:53 am-4:19 pm

1 stop25h 26m

$318

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 2/3

2:15 pm-9:05 pm

1 stop9h 50m

Ontario

mer. 2/11

1:10 pm-11:59 pm

1 stop7h 49m

$319

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mer. 1/28

2:03 pm-9:05 pm

1 stop10h 02m

Ontario

mar. 2/10

7:30 am-8:45 pm

1 stop10h 15m

$319

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

sam. 1/17

9:00 am-12:47 pm

1 stop6h 47m

Ontario

sam. 1/31

5:05 am-8:26 pm

2 stops12h 21m

$324

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jeu. 1/1

5:19 am-10:00 am

1 stop7h 41m

Ontario

jeu. 1/8

3:30 pm-6:30 am

1 stop12h 00m

$325

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mer. 1/7

6:40 am-3:08 pm

1 stop11h 28m

Ontario

jeu. 1/8

11:53 am-4:19 pm

1 stop25h 26m

$351

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 22 results
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Compare providers for flights from Detroit to Ontario

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 Detroit to Ontario in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Detroit-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Detroit-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Detroit-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Detroit-Ontario 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 Detroit-Ontario 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 Detroit to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Detroit 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 Detroit to Ontario

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

Currently, February is the cheapest month in which you can book a flight from Detroit to Ontario (average of $104). Flying from Detroit to Ontario in June is currently the most expensive (average of $159). 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 DTT to ONT?

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

A simple way to save on the total cost of your ticket is to fly from Detroit to Ontario in the evening. If you’re flexible enough to do this you can expect to save up to 35% on your trip compared to booking a flight in the afternoon.

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

What’s the top layover airport for flights from Detroit to Ontario?

Share of 1-stop round-trip flights from Detroit to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.

Denver (DEN) – chosen by Cheapflights users on 75% of 1-stop itineraries from Detroit to Ontario on Cheapflights.

What’s the cheapest layover airport for flights from Detroit to Ontario?

Average round-trip fare for 1-stop flights from Detroit to Ontario, 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 $401.

What’s the fastest layover option from Detroit to Ontario?

Shortest average travel time for 1-stop one-way flights from Detroit to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 6h 25m.

Which airport typically offers the quickest layover for flights from Detroit to Ontario?

Average layover duration for 1-stop one-way flights from Detroit to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 0h 58m.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated novembre 20, 2025.
Read through reviews of airlines operating flights from Detroit to Ontario, such as Delta, American Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,002 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
11,045 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Frontier
5.8
Fair
3,104 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Detroit to Ontario. 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 Detroit to Ontario?

    There are many flights that can get you from Detroit to Ontario in 9h 41m. Fly via Delta or Alaska Airlines to get the fastest option. There are 1929 mi between Detroit and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Detroit to Ontario round-trip from $162. Other airlines that can offer you cheap pricing are American Airlines, from $329, and United Airlines, from $329. Users have found that Frontier is 55% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Detroit to Ontario 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 Detroit to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Detroit to Ontario (average of $104). Flying from Detroit to Ontario in June is currently the most expensive (average of $159). 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

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Alternative routes for Detroit to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Detroit to Ontario

Discover the top 5 airlines that operate flights from Detroit to Ontario. 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 novembre 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$162Average$319FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$329Average$502FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$329Average$443FlexibilityNo cancel feeOn-time71%
DeltaCheapest$344Average$434FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$389Average$483FlexibilityNo cancel feeOn-time63%

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