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Ontario

$70+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap 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 February 5, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Tue 3/106:15 am
ONT
-
DTW
1 stop25h 44m
Frontier
Deal found 2/2$128
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Tue 3/106:15 am
ONT
-
DTW
1 stop25h 44m
Frontier
Deal found 2/2$141
This Trip.com deal was found by Cheapflights users on 2/3. 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 2/248:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Tue 3/106:15 am
ONT
-
DTW
1 stop25h 44m
Frontier
Deal found 2/3$143
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/711:54 am
DTW
-
ONT
1 stop15h 05m
Frontier
Sun 3/156:15 am
ONT
-
DTW
1 stop25h 44m
Frontier
Deal found 2/2$151
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:52 pm
DTW
-
ONT
1 stop8h 07m
Frontier
Wed 2/258:40 am
ONT
-
DTW
1 stop12h 00m
Frontier
Deal found 2/2$158
This CheapOair deal was found by Cheapflights users on 2/1. 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.
Wed 2/258:30 am
DTW
-
ONT
1 stop28h 04m
Frontier
Tue 3/38:40 am
ONT
-
DTW
1 stop12h 15m
Frontier
Deal found 2/1$159
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Tue 2/248:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Tue 3/38:40 am
ONT
-
DTW
1 stop12h 15m
Frontier
Deal found 2/3$160
This Booking.com deal was found by Cheapflights users on 2/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:30 am
DTW
-
ONT
1 stop28h 04m
Frontier
Mon 3/26:10 am
ONT
-
DTW
1 stop8h 57m
Frontier
Deal found 2/2$163
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/248:30 am
DTW
-
ONT
1 stop16h 04m
Frontier
Mon 3/26:10 am
ONT
-
DTW
1 stop8h 57m
Frontier
Deal found 2/2$164

Find 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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$128
(Kiwi.com)

One-way from

$70
(Trip.com)

Popular in

January

Cheapest in

September

Average price

$362
Provider with most accurate pricing for Detroit (DTT)-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-Ontario flights.
Search Deals
From Detroit (DTT) to Ontario
Search Deals
One-way flight from Detroit (DTT) to Ontario
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 5, 2026.
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

Fri 4/3

7:07 pm-11:39 am

1 stop19h 32m

Ontario

Mon 4/13

9:02 pm-11:31 am

2 stops11h 29m

$221

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 4/28

8:15 pm-11:44 pm

1 stop6h 29m

Ontario

Mon 5/4

10:15 pm-9:24 am

1 stop8h 09m

$310

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 3/4

7:05 am-12:48 pm

1 stop8h 43m

Ontario

Wed 3/11

11:59 pm-9:47 am

1 stop6h 48m

$327

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 4/28

7:09 am-2:32 pm

1 stop10h 23m

Ontario

Sat 5/2

10:39 am-5:49 am

1 stop16h 10m

$330

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 4/28

7:10 am-12:14 pm

1 stop8h 04m

Ontario

Sat 5/2

10:43 am-11:58 pm

2 stops10h 15m

$332

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 3/17

11:35 am-10:18 pm

2 stops13h 43m

Ontario

Tue 3/24

11:59 pm-4:08 pm

2 stops13h 09m

$337

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 2/28

9:00 am-5:41 pm

2 stops11h 41m

Ontario

Wed 3/4

6:37 pm-10:04 am

2 stops12h 27m

$338

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 4/23

5:10 pm-2:32 pm

1 stop24h 22m

Ontario

Sat 5/2

10:39 am-5:49 am

1 stop16h 10m

$353

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 3/5

5:22 pm-11:32 pm

1 stop9h 10m

Ontario

Tue 3/10

12:02 pm-4:26 pm

1 stop25h 24m

$353

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 2/20

7:00 am-9:05 pm

2 stops17h 05m

Ontario

Wed 2/25

10:20 pm-10:56 am

1 stop9h 36m

$375

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 23 results
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2
3

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 $103). 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.

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 50% 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 $149.

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 February 5, 2026.
Read through reviews of airlines operating flights from Detroit to Ontario, such as Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,148 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

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
8,148 reviews
Delta
7.9
Good
8,148 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

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
11,233 reviews
Delta
7.9
Good
8,148 reviews

Comfort

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

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 6h 29m. Fly via Delta, United Airlines, 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 $155. Other airlines that can offer you cheap pricing are American Airlines, from $304, and United Airlines, from $329. Users have found that Frontier is 60% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $104. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Detroit to Ontario for a low price.

  • 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 $103). 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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$155Average$316FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$304Average$418FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$329Average$502FlexibilityNo cancel feeOn-time69%
DeltaCheapest$344Average$430FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$360Average$411FlexibilityNo cancel feeOn-time63%

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