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$119+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
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 April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$218
(Trip.com)

One-way from

$119
(Frontier)

Popular in

June

Cheapest in

September

Average price

$448
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. 8% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 1, 2025.

This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/238:15 pmDTW - ONT
1 stop14h 39mFrontier
Thu 4/2412:59 amONT - DTW
2 stops15h 26mFrontier
Deal found 3/30$218
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/137:00 amDTW - ONT
1 stop11h 32mMultiple Airlines
Thu 5/1512:59 amONT - DTW
1 stop9h 29mMultiple Airlines
Deal found 3/31$357
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/234:55 pmDTW - ONT
1 stop8h 48mDelta
Wed 4/3010:15 pmONT - DTW
1 stop7h 13mDelta
Deal found 3/31$387
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1111:54 amDTW - ONT
2 stops9h 18mAmerican Airlines
Sat 6/1411:59 pmONT - DTW
1 stop7h 46mAmerican Airlines
Deal found 3/31$392
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:00 amDTW - ONT
1 stop11h 32mAlaska Airlines
Wed 5/74:29 pmONT - DTW
1 stop9h 42mAlaska Airlines
Deal found 3/31$394
This Hawaiian Airlines 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/85:13 pmDTW - ONT
1 stop9h 46mHawaiian Airlines
Tue 5/134:29 pmONT - DTW
1 stop9h 42mHawaiian Airlines
Deal found 3/31$407
This United Airlines deal was found by Cheapflights users on 4/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/284:40 pmDTW - ONT
1 stop8h 18mUnited Airlines
Tue 4/296:00 amONT - DTW
1 stop7h 57mUnited Airlines
Deal found 4/1$408
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:15 pmDTW - ONT
1 stop12h 26mJetBlue
Mon 9/1511:00 pmONT - DTW
1 stop9h 30mJetBlue
Deal found 3/31$464
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/225:40 amDTW - ONT
2 stops9h 55mSouthwest
Tue 5/275:30 amONT - DTW
2 stops9h 15mSouthwest
Deal found 3/31$465

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 April 1, 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

Wed 4/23

8:15 pm-7:54 am

1 stop14h 39m

Ontario

Thu 4/24

12:59 am-7:25 pm

2 stops15h 26m

$218

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 5/13

7:00 am-3:32 pm

1 stop11h 32m

Ontario

Thu 5/15

12:59 am-1:28 pm

1 stop9h 29m

$357

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 4/23

4:55 pm-10:43 pm

1 stop8h 48m

Ontario

Wed 4/30

10:15 pm-8:28 am

1 stop7h 13m

$387

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 6/11

11:54 am-6:12 pm

2 stops9h 18m

Ontario

Sat 6/14

11:59 pm-10:45 am

1 stop7h 46m

$392

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 4/30

7:00 am-3:32 pm

1 stop11h 32m

Ontario

Wed 5/7

4:29 pm-5:11 am

1 stop9h 42m

$394

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 5/8

5:13 pm-11:59 pm

1 stop9h 46m

Ontario

Tue 5/13

4:29 pm-5:11 am

1 stop9h 42m

$407

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 4/28

4:40 pm-9:58 pm

1 stop8h 18m

Ontario

Tue 4/29

6:00 am-4:57 pm

1 stop7h 57m

$408

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 5/22

5:40 am-12:35 pm

2 stops9h 55m

Ontario

Tue 5/27

5:30 am-5:45 pm

2 stops9h 15m

$465

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 4/21

10:44 am-5:03 pm

1 stop9h 19m

$119

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 4/9

5:30 am-1:40 pm

1 stop11h 10m

$164

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 14 results
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 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 $246). Flying from Detroit to Ontario in March is currently the most expensive (average of $328). 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 April 1, 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 37% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Detroit to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Detroit to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Detroit to Ontario flight should consider departing on Monday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 April 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Detroit to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,820 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,277 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,898 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,345 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,615 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

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.

  • What are the cheapest airlines flying from Detroit to Ontario round-trip?

    Cheapflights users have booked flights from Detroit to Ontario round-trip from $218. Other airlines that can offer you cheap pricing are Delta, from $387, and American Airlines, from $392. Users have found that Frontier is 44% 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 $119. However, be on the lookout for offers from Delta and American 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 $246). Flying from Detroit to Ontario in March is currently the most expensive (average of $328). 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 6 airlines flying from Detroit to Ontario

Discover the top 6 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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$220FlexibilityNo cancel feeOn-time65%
FrontierCheapest$148Average$237FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$336Average$476FlexibilityNo cancel feeOn-time71%
DeltaCheapest$352Average$443FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$390Average$483FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$412Average$559FlexibilityNo cancel feeOn-time69%

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