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$105+ 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
May 17 — May 241
Sat 5/17
Sat 5/24
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 May 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$210
(Booking.com)

One-way from

$105
(Trip.com)

Popular in

July

Cheapest in

September

Average price

$277
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
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Highest demand for flights based on searches. 15% potential increase in price ($69 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 May 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 May 12, 2025.

This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/289:55 pmDTW - ONT
1 stop21h 36mFrontier
Wed 6/1112:39 pmONT - DTW
1 stop23h 47mFrontier
Deal found 5/11$210
This Hawaiian Airlines deal was found by Cheapflights users on 5/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/266:30 amDTW - ONT
1 stop10h 39mHawaiian Airlines
Wed 8/273:04 pmONT - DTW
1 stop11h 01mHawaiian Airlines
Deal found 5/11$262
This American Airlines deal was found by Cheapflights users on 5/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:00 amDTW - ONT
1 stop9h 39mAmerican Airlines
Sat 8/910:50 amONT - DTW
1 stop8h 34mAmerican Airlines
Deal found 5/11$291
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/47:00 amDTW - ONT
1 stop9h 26mAlaska Airlines
Wed 7/94:00 pmONT - DTW
1 stop10h 03mAlaska Airlines
Deal found 5/11$324
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:15 pmDTW - ONT
1 stop6h 51mUnited Airlines
Tue 8/196:04 amONT - DTW
1 stop7h 03mUnited Airlines
Deal found 5/11$353
This JetBlue deal was found by Cheapflights users on 5/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/412:15 pmDTW - ONT
1 stop12h 26mJetBlue
Mon 10/1311:00 pmONT - DTW
1 stop9h 30mJetBlue
Deal found 5/11$377
This Delta deal was found by Cheapflights users on 5/10. 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.
Mon 5/195:56 pmDTW - ONT
1 stop8h 46mDelta
Wed 5/211:10 pmONT - DTW
1 stop7h 44mDelta
Deal found 5/10$437
This Expedia deal was found by Cheapflights users on 5/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/162:28 pmDTW - ONT
1 stop12h 31mMultiple Airlines
Mon 5/266:00 amONT - DTW
2 stops12h 11mMultiple Airlines
Deal found 5/12$494
This Southwest deal was found by Cheapflights users on 5/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/85:45 pmDTW - ONT
2 stops9h 20mSouthwest
Sun 6/155:40 amONT - DTW
2 stops9h 20mSouthwest
Deal found 5/11$579

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 May 12, 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 5/28

9:55 pm-4:31 pm

1 stop21h 36m

Ontario

Wed 6/11

12:39 pm-3:26 pm

1 stop23h 47m

$210

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 8/6

7:00 am-1:39 pm

1 stop9h 39m

Ontario

Sat 8/9

10:50 am-10:24 pm

1 stop8h 34m

$291

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 7/4

7:00 am-1:26 pm

1 stop9h 26m

Ontario

Wed 7/9

4:00 pm-5:03 am

1 stop10h 03m

$324

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 5/24

6:26 pm-10:26 pm

1 stop7h 00m

Ontario

Sun 5/25

6:41 pm-4:58 am

1 stop7h 17m

$387

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 5/19

5:56 pm-11:42 pm

1 stop8h 46m

Ontario

Wed 5/21

1:10 pm-11:54 pm

1 stop7h 44m

$437

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 5/16

2:28 pm-11:59 pm

1 stop12h 31m

Ontario

Mon 5/26

6:00 am-9:11 pm

2 stops12h 11m

$494

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 6/8

5:45 pm-12:05 am

2 stops9h 20m

Ontario

Sun 6/15

5:40 am-6:00 pm

2 stops9h 20m

$579

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 5/18

4:53 pm-10:46 pm

1 stop8h 53m

Ontario

Mon 5/19

4:45 pm-5:14 am

1 stop9h 29m

$596

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 6/8

9:59 pm-8:51 pm

1 stop25h 52m

$105

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 6/7

6:23 pm-11:08 pm

1 stop7h 45m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 15 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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 Expedia the most. Expedia 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 May 12, 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 May 12, 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
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,432 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $210. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $262, and American Airlines, from $291. 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 $105. However, be on the lookout for offers from Delta 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 $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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$208FlexibilityNo cancel feeOn-time65%
FrontierCheapest$154Average$238FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$352Average$479FlexibilityNo cancel feeOn-time71%
DeltaCheapest$352Average$450FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$390Average$484FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$412Average$565FlexibilityNo cancel feeOn-time69%

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