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$63+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
Nov 30 — Dec 71
Sun 11/30
Sun 12/7
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 October 31, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$63
(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 ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 31, 2025.

This CheapOair deal was found by Cheapflights users on 10/30. 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 11/175:14 pmDTW - ONT
1 stop9h 36mFrontier
Wed 11/198:00 amONT - DTW
1 stop19h 05mFrontier
Deal found 10/30$130
This Frontier deal was found by Cheapflights users on 10/30. 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 11/145:14 pmDTW - ONT
1 stop9h 36mFrontier
Mon 11/177:54 amONT - DTW
1 stop7h 18mFrontier
Deal found 10/30$137
This CheapOair deal was found by Cheapflights users on 10/30. 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 12/55:20 pmDTW - ONT
1 stop24h 05mFrontier
Sun 12/72:59 pmONT - DTW
1 stop17h 00mFrontier
Deal found 10/30$138
This Trip.com deal was found by Cheapflights users on 10/30. 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.
Tue 12/97:59 amDTW - ONT
2 stops16h 18mMultiple Airlines
Sat 12/133:20 pmONT - DTW
1 stop21h 59mMultiple Airlines
Deal found 10/30$175
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:14 pmDTW - ONT
1 stop20h 56mFrontier
Thu 11/203:31 pmONT - DTW
1 stop11h 34mFrontier
Deal found 10/31$176
This CheapOair deal was found by Cheapflights users on 10/28. 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 12/710:36 amDTW - ONT
1 stop7h 46mFrontier
Thu 12/1112:04 pmONT - DTW
1 stop25h 15mFrontier
Deal found 10/28$182
This Booking.com deal was found by Cheapflights users on 10/30. 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.
Mon 11/105:14 pmDTW - ONT
1 stop9h 36mFrontier
Wed 11/198:00 amONT - DTW
1 stop19h 05mFrontier
Deal found 10/30$183
This FlightHub deal was found by Cheapflights users on 10/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:14 pmDTW - ONT
1 stop9h 36mFrontier
Wed 11/198:00 amONT - DTW
1 stop19h 05mFrontier
Deal found 10/29$187
This CheapOair deal was found by Cheapflights users on 10/29. 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 12/125:20 pmDTW - ONT
1 stop24h 05mFrontier
Sun 12/142:59 pmONT - DTW
1 stop17h 00mFrontier
Deal found 10/29$189
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:44 amDTW - ONT
1 stop7h 49mFrontier
Mon 1/56:00 amONT - DTW
1 stop21h 54mFrontier
Deal found 10/31$200

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 October 31, 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

Thu 11/27

12:15 pm-6:04 pm

1 stop8h 49m

Ontario

Wed 12/3

12:12 pm-10:58 pm

1 stop7h 46m

$385

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 11/27

2:41 pm-7:42 pm

1 stop8h 01m

Ontario

Tue 12/2

1:29 pm-12:20 am

1 stop7h 51m

$385

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 1/20

5:15 pm-8:36 pm

1 stop30h 21m

Ontario

Fri 1/23

11:53 am-4:19 pm

1 stop25h 26m

$392

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 1/21

8:35 am-10:29 pm

1 stop16h 54m

Ontario

Sat 1/24

3:30 pm-6:30 am

1 stop12h 00m

$393

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 11/27

2:41 pm-7:42 pm

1 stop8h 01m

Ontario

Mon 12/8

5:49 pm-6:39 am

1 stop9h 50m

$400

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 11/27

12:20 pm-7:42 pm

1 stop10h 22m

Ontario

Thu 12/4

12:12 pm-12:43 am

1 stop9h 31m

$400

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 12/16

8:12 pm-11:13 am

1 stop18h 01m

Ontario

Mon 12/22

1:15 pm-12:27 am

1 stop8h 12m

$410

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 1/19

8:00 pm-11:58 pm

1 stop6h 58m

Ontario

Sat 1/24

3:30 pm-6:30 am

1 stop12h 00m

$430

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 12/4

5:41 pm-11:29 pm

1 stop8h 48m

Ontario

Mon 12/8

12:13 pm-4:45 pm

1 stop25h 32m

$432

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 12/15

9:15 pm-11:02 am

2 stops16h 47m

Ontario

Mon 12/22

1:15 pm-12:27 am

1 stop8h 12m

$435

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 24 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 October.
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, August 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 October 31, 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 October 31, 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
7,998 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

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
7,998 reviews
Delta
7.9
Good
7,998 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

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
11,034 reviews
Delta
7.9
Good
7,998 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

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
3,123 reviews
Delta
7.9
Good
7,998 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

7.9

Comfort

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 8h 49m. 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, August 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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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 October 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$162Average$319FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$329Average$502FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$329Average$451FlexibilityNo cancel feeOn-time71%
DeltaCheapest$344Average$434FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$389Average$483FlexibilityNo cancel feeOn-time63%

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