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Ontario

$97+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
Aug 12 — Aug 191
Wed 8/12
Wed 8/19
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 July 13, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Wed 8/1912:20 pm
DTW
-
ONT
1 stop14h 30m
Frontier
Wed 8/267:56 pm
ONT
-
DTW
1 stop12h 29m
Frontier
Deal found 7/11$178
This Trip.com deal was found by Cheapflights users on 7/11. 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.
Sat 8/2212:20 pm
DTW
-
ONT
1 stop14h 30m
Frontier
Wed 8/266:00 am
ONT
-
DTW
1 stop14h 59m
Frontier
Deal found 7/11$233
This Kiwi.com deal was found by Cheapflights users on 7/12. 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.
Wed 9/212:20 pm
DTW
-
ONT
1 stop24h 44m
Frontier
Tue 9/87:56 pm
ONT
-
DTW
1 stop25h 28m
Frontier
Deal found 7/12$236
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 8/119:06 am
DTW
-
ONT
2 stops41h 44m
Frontier
Tue 8/187:56 pm
ONT
-
DTW
1 stop12h 29m
Frontier
Deal found 7/12$245
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 8/145:35 pm
DTW
-
ONT
2 stops33h 15m
Frontier
Tue 8/187:56 pm
ONT
-
DTW
1 stop12h 29m
Frontier
Deal found 7/12$252
This Kiwi.com deal was found by Cheapflights users on 7/11. 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.
Mon 8/105:35 pm
DTW
-
ONT
2 stops40h 57m
Frontier
Mon 8/176:00 am
ONT
-
DTW
1 stop26h 25m
Frontier
Deal found 7/11$255
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 8/288:46 pm
DTW
-
ONT
2 stops30h 04m
Frontier
Tue 9/17:56 pm
ONT
-
DTW
1 stop12h 29m
Frontier
Deal found 7/12$256
This Kiwi.com deal was found by Cheapflights users on 7/12. 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.
Mon 8/36:10 am
DTW
-
ONT
2 stops54h 54m
Frontier
Wed 8/126:00 am
ONT
-
DTW
1 stop14h 59m
Frontier
Deal found 7/12$263

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 July 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$178
(Kiwi.com)

One-way from

$97
(Trip.com)

Popular in

January

Cheapest in

July

Average price

$317
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. 27% potential increase in price ($179 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 13, 2026.
Use the filters below to find and compare flights from Detroit to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 8/7

6:20 am-10:20 am

1 stop7h 00m

Ontario

Fri 8/14

11:55 pm-10:15 am

1 stop7h 20m

$331
Quickest round-trip

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 8/27

8:15 pm-11:34 pm

1 stop6h 19m

Ontario

Sat 8/29

1:06 pm-10:40 pm

1 stop6h 34m

$331

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 8/25

7:00 am-12:40 pm

2 stops8h 40m

Ontario

Tue 9/1

6:40 am-6:25 pm

2 stops8h 45m

$413

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 9/3

3:29 pm-8:53 pm

1 stop8h 24m

Ontario

Tue 9/8

5:00 am-6:05 pm

2 stops10h 05m

$446

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 8/30

6:20 am-10:42 am

1 stop7h 22m

Ontario

Tue 9/1

1:06 pm-11:59 pm

1 stop7h 53m

$453

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 10/7

2:25 pm-8:45 pm

2 stops9h 20m

Ontario

Mon 10/12

1:05 pm-11:35 pm

2 stops7h 30m

$469

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 7/29

6:17 am-10:38 am

1 stop7h 21m

Ontario

Mon 8/10

1:06 pm-11:59 pm

1 stop7h 53m

$498

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 8/25

12:35 pm-8:53 pm

2 stops11h 18m

Ontario

Sat 8/29

7:00 am-4:57 pm

1 stop6h 57m

$508

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 9/1

7:34 am-6:11 pm

2 stops13h 37m

Ontario

Mon 9/7

7:00 am-5:00 pm

1 stop7h 00m

$508

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 8/22

5:25 am-3:41 pm

2 stops13h 16m

Ontario

Wed 8/26

5:00 am-5:00 pm

2 stops9h 00m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 23 resultsSorted by cheapest first
1
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 July.
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, January is the cheapest month in which you can book a flight from Detroit to Ontario (average of $138). Flying from Detroit to Ontario in November is currently the most expensive (average of $319). 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 far ahead should I book a flight from Detroit to Ontario?

Booking 52 days in advance of your planned departure date is, on average, the best time to get cheap flights from Detroit to Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 July 13, 2026.
Read through reviews of airlines operating flights from Detroit to Ontario, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,249 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!
Southwest
8.0
Very good
4,249 reviews
Southwest
8.0
Very good
4,249 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!
Delta
7.8
Good
8,464 reviews
Southwest
8.0
Very good
4,249 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!
American Airlines
7.1
Good
11,811 reviews
Southwest
8.0
Very good
4,249 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

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 19m. Fly via Southwest, Delta, or United 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 $149. Other airlines that can offer you cheap pricing are Delta, from $296, and American Airlines, from $304. Users have found that Frontier is 69% 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, January is the cheapest month in which you can book a flight from Detroit to Ontario (average of $138). Flying from Detroit to Ontario in November is currently the most expensive (average of $319). 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 4 airlines flying from Detroit to Ontario

Discover the top 4 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 July 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$149Average$319FlexibilityNo cancel feeOn-time62%
DeltaCheapest$296Average$516FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$304Average$525FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$360Average$511FlexibilityNo cancel feeOn-time63%

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