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Cheap flights from Detroit to Ontario from C$ 204

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
16 Oct — 23 Oct1
1 adult
1 adult, Economy

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 16 September 2025.

Round-trip from

C$ 204

Popular in

October

Cheapest in

February

Average price

C$ 500
Frontier
  • Frontier
  • 18/10-20/10
  • 2 total stops
  • 34h 01m total
  • Detroit to Ontario
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Highest demand for flights based on searches. 7% potential increase in price (C$ 56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 25 potential savings vs. average RT price).
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Average for round-trip flights in September 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 16 September 2025.

Thu 16/106:00 a.m.DTW - ONT
1 stop20h 50mFrontier
Tue 21/107:04 a.m.ONT - DTW
1 stop14h 55mFrontier
Deal found 14/9C$ 204
Wed 8/106:00 a.m.DTW - ONT
1 stop20h 50mFrontier
Sat 18/108:34 a.m.ONT - DTW
1 stop7h 59mFrontier
Deal found 16/9C$ 211
Thu 16/106:00 a.m.DTW - ONT
1 stop20h 50mFrontier
Mon 20/106:53 a.m.ONT - DTW
1 stop15h 06mFrontier
Deal found 15/9C$ 257
Sun 21/96:10 a.m.DTW - ONT
1 stop28h 43mFrontier
Tue 23/98:59 p.m.ONT - DTW
1 stop24h 47mFrontier
Deal found 14/9C$ 300
Sun 28/96:10 a.m.DTW - ONT
1 stop28h 43mFrontier
Thu 9/106:53 a.m.ONT - DTW
1 stop15h 06mFrontier
Deal found 15/9C$ 345
Sat 18/1012:16 p.m.DTW - ONT
1 stop12h 13mJetBlue
Tue 21/1010:56 p.m.ONT - DTW
1 stop9h 34mJetBlue
Deal found 14/9C$ 495
Wed 29/108:00 a.m.DTW - ONT
1 stop7h 14mDelta
Sat 15/1111:46 a.m.ONT - DTW
1 stop7h 39mDelta
Deal found 15/9C$ 501
Fri 17/1012:16 p.m.DTW - ONT
1 stop12h 13mJetBlue
Tue 21/1010:56 p.m.ONT - DTW
1 stop9h 34mJetBlue
Deal found 15/9C$ 504
Wed 15/1012:16 p.m.DTW - ONT
1 stop12h 13mJetBlue
Fri 17/1010:56 p.m.ONT - DTW
1 stop9h 34mJetBlue
Deal found 14/9C$ 514
Tue 21/105:25 a.m.DTW - ONT
2 stops8h 10mSouthwest
Tue 4/118:40 a.m.ONT - DTW
2 stops9h 00mSouthwest
Deal found 14/9C$ 515
Wed 1/1012:16 p.m.DTW - ONT
1 stop12h 13mJetBlue
Mon 6/1010:56 p.m.ONT - DTW
1 stop9h 34mJetBlue
Deal found 14/9C$ 522
Mon 17/114:51 p.m.DTW - ONT
1 stop9h 41mAlaska Airlines
Mon 24/114:48 p.m.ONT - DTW
1 stop9h 33mAlaska Airlines
Deal found 15/9C$ 530

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 629,999 searches. Data last updated 16 September 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 2/10

12:16 p.m.-9:29 p.m.

1 stop12h 13m

Ontario

Mon 6/10

10:56 p.m.-11:30 a.m.

1 stop9h 34m

C$ 522

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 13/12

8:03 a.m.-12:22 p.m.

1 stop7h 19m

Ontario

Tue 23/12

1:15 p.m.-12:15 a.m.

1 stop8h 00m

C$ 542

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 8/12

6:00 p.m.-11:03 p.m.

1 stop8h 03m

Ontario

Thu 25/12

7:05 a.m.-4:55 p.m.

1 stop6h 50m

C$ 562

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 7/10

12:16 p.m.-9:29 p.m.

1 stop12h 13m

Ontario

Sat 18/10

10:56 p.m.-11:30 a.m.

1 stop9h 34m

C$ 562

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 7/10

12:16 p.m.-9:29 p.m.

1 stop12h 13m

Ontario

Sat 11/10

10:56 p.m.-11:30 a.m.

1 stop9h 34m

C$ 562

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 8/10

12:16 p.m.-9:29 p.m.

1 stop12h 13m

Ontario

Sat 18/10

10:56 p.m.-11:30 a.m.

1 stop9h 34m

C$ 562

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 22/10

8:25 a.m.-5:10 p.m.

1 stop11h 45m

Ontario

Sat 25/10

1:15 p.m.-11:59 p.m.

1 stop7h 44m

C$ 573

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 7/12

5:54 p.m.-11:59 p.m.

1 stop9h 05m

Ontario

Wed 10/12

10:25 p.m.-9:30 a.m.

1 stop8h 05m

C$ 597

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 14/12

5:54 p.m.-11:59 p.m.

1 stop9h 05m

Ontario

Tue 16/12

6:00 a.m.-3:35 p.m.

1 stop6h 35m

C$ 597

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 12/12

8:09 p.m.-11:59 p.m.

1 stop6h 50m

Ontario

Mon 15/12

6:00 a.m.-3:35 p.m.

1 stop6h 35m

C$ 597

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/9

Showing 1-10 of 22 results
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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, September is the cheapest month in which you can book a flight from Detroit to Ontario (average of C$ 290). Flying from Detroit to Ontario in December is currently the most expensive (average of C$ 461). 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 16 September 2025.

One of the essential ways to save on airfare from Detroit to Ontario is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 64% on airfare.

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

Share of one-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 77% of one-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 C$ 472.

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 Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 6h 51m.

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 Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 18m.

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?

    JetBlue and Delta can get you from Detroit to Ontario in just under 7h 19m. Your travel time can differ by up to 4h 54m. Detroit and Ontario are separated by a distance of 3104 km. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Detroit to Ontario round-trip?

    Cheapflights users have booked flights from Detroit to Ontario round-trip from C$ 501. Southwest is currently priced 8% below the average price you’ll pay for this route.

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

    The cheapest airlines for a one-way flight from Detroit to Ontario are Delta (C$ 251), Hawaiian Airlines (C$ 280), and United Airlines (C$ 314).

  • 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, September is the cheapest month in which you can book a flight from Detroit to Ontario (average of C$ 290). Flying from Detroit to Ontario in December is currently the most expensive (average of C$ 461). 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 airline flying from Detroit to Ontario

Discover the top airline 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 629,999 searches. Data last updated 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 501AverageC$ 619FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Detroit to Ontario?

Cheapflights helps you search for flights from Detroit to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Detroit to Ontario?

Cheapflights helps you find that perfect flight to Ontario from Detroit by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Detroit to Ontario with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Detroit to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Detroit to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Detroit to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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