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Ontario

$80+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
Apr 30 — May 71
Thu 4/30
Thu 5/7
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 March 31, 2026.

This Frontier deal was found by Cheapflights users on 3/30. 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.
Thu 4/3010:27 pm
DTW
-
ONT
1 stop12h 04m
Frontier
Sat 5/212:59 am
ONT
-
DTW
1 stop6h 59m
Frontier
Deal found 3/30$160
This Booking.com deal was found by Cheapflights users on 3/30. 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.
Fri 5/110:27 pm
DTW
-
ONT
1 stop28h 28m
Frontier
Fri 5/86:00 am
ONT
-
DTW
1 stop14h 59m
Frontier
Deal found 3/30$162
This Booking.com deal was found by Cheapflights users on 3/30. 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 4/2010:05 am
DTW
-
ONT
1 stop9h 33m
Frontier
Sun 5/312:59 am
ONT
-
DTW
1 stop21h 58m
Frontier
Deal found 3/30$167
This CheapOair deal was found by Cheapflights users on 3/30. 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.
Thu 4/3010:27 pm
DTW
-
ONT
1 stop12h 04m
Frontier
Thu 5/76:00 am
ONT
-
DTW
1 stop27h 35m
Frontier
Deal found 3/30$171
This Booking.com deal was found by Cheapflights users on 3/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2611:53 am
DTW
-
ONT
1 stop22h 38m
Frontier
Wed 5/208:06 pm
ONT
-
DTW
1 stop19h 37m
Frontier
Deal found 3/28$172
This Frontier deal was found by Cheapflights users on 3/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:45 am
DTW
-
ONT
1 stop6h 54m
Frontier
Thu 4/2312:59 am
ONT
-
DTW
1 stop6h 59m
Frontier
Deal found 3/28$180
This Frontier deal was found by Cheapflights users on 3/30. 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.
Mon 5/410:05 am
DTW
-
ONT
1 stop9h 33m
Frontier
Sat 5/910:50 am
ONT
-
DTW
1 stop10h 09m
Frontier
Deal found 3/30$185
This Expedia deal was found by Cheapflights users on 3/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:52 am
DTW
-
ONT
1 stop25h 43m
Frontier
Mon 5/116:00 am
ONT
-
DTW
1 stop14h 59m
Frontier
Deal found 3/30$186
This Booking.com deal was found by Cheapflights users on 3/26. 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 5/68:52 am
DTW
-
ONT
1 stop25h 43m
Frontier
Tue 5/126:00 am
ONT
-
DTW
1 stop14h 59m
Frontier
Deal found 3/26$187
This Booking.com deal was found by Cheapflights users on 3/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:05 am
DTW
-
ONT
1 stop9h 33m
Frontier
Thu 4/308:56 am
ONT
-
DTW
1 stop24h 51m
Frontier
Deal found 3/31$192
This Booking.com deal was found by Cheapflights users on 3/27. 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.
Sun 4/127:45 am
DTW
-
ONT
1 stop27h 19m
Frontier
Sun 4/198:21 am
ONT
-
DTW
1 stop25h 26m
Frontier
Deal found 3/27$193

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 March 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(Expedia)

One-way from

$80
(Frontier)

Popular in

January

Cheapest in

September

Average price

$455
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. 24% potential increase in price ($133 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 31, 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

Sat 4/25

5:59 pm-10:43 pm

1 stop7h 44m

Ontario

Wed 5/6

10:15 pm-10:23 am

1 stop9h 08m

$348

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 4/18

12:15 pm-4:25 pm

1 stop7h 10m

Ontario

Wed 4/29

1:29 pm-11:58 pm

1 stop7h 29m

$357

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 5/2

8:00 am-12:14 pm

1 stop7h 14m

Ontario

Mon 5/4

5:55 pm-6:30 am

1 stop9h 35m

$417

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 5/2

8:00 am-12:14 pm

1 stop7h 14m

Ontario

Sun 5/10

10:00 pm-10:02 pm

2 stops21h 02m

$451

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 4/25

10:53 am-10:45 pm

2 stops14h 52m

Ontario

Wed 5/6

6:59 pm-10:06 am

2 stops12h 07m

$466

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 4/20

4:18 pm-10:31 pm

1 stop9h 13m

Ontario

Sat 4/25

7:00 am-5:31 pm

1 stop7h 31m

$480

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 5/4

9:35 pm-11:36 am

2 stops17h 01m

Ontario

Sun 5/10

10:00 pm-10:02 pm

2 stops21h 02m

$491

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 4/23

7:09 am-2:32 pm

1 stop10h 23m

Ontario

Sat 4/25

3:26 pm-5:44 am

1 stop11h 18m

$501

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 6/6

5:20 pm-10:50 pm

2 stops8h 30m

Ontario

Tue 6/9

8:25 pm-10:00 am

2 stops10h 35m

$502
Quickest round-trip

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 5/15

8:24 pm-11:34 pm

1 stop6h 10m

Ontario

Mon 5/18

1:29 pm-11:59 pm

1 stop7h 30m

$512

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Showing 1-10 of 24 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 March.
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, 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 January is currently the most expensive (average of $162). 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 March 31, 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
8,364 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Boarding

8.1

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
8,364 reviews
Delta
7.9
Good
8,364 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Boarding

8.1

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
7.1
Good
11,543 reviews
Delta
7.9
Good
8,364 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Boarding

8.1

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 7h 44m. Fly via 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 American Airlines, from $296, and United Airlines, from $329. Users have found that Frontier is 63% 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 American Airlines and United Airlines, 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, 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 January is currently the most expensive (average of $162). 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 March 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$149Average$316FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$296Average$521FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$329Average$483FlexibilityNo cancel feeOn-time69%
DeltaCheapest$344Average$480FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$353Average$492FlexibilityNo cancel feeOn-time63%

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