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$112+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$245
(FlightHub)

One-way from

$116
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$424
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 ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 31, 2025.

This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/97:15 amDTW - ONT
1 stop19h 35mFrontier
lun. 8/1112:59 amONT - DTW
1 stop12h 21mFrontier
Deal found 7/30$245
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/47:31 amDTW - ONT
1 stop13h 45mAmerican Airlines
mié. 10/86:15 amONT - DTW
1 stop13h 54mAmerican Airlines
Deal found 7/30$317
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/276:30 amDTW - ONT
1 stop10h 39mAlaska Airlines
mié. 9/33:06 pmONT - DTW
1 stop11h 01mAlaska Airlines
Deal found 7/30$336
This Delta deal was found by Cheapflights users on 7/29. 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.
mar. 10/146:03 pmDTW - ONT
1 stop8h 36mDelta
lun. 10/205:50 pmONT - DTW
1 stop9h 38mDelta
Deal found 7/29$337
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/236:00 amDTW - ONT
2 stops9h 32mUnited Airlines
mié. 8/275:10 amONT - DTW
2 stops8h 41mUnited Airlines
Deal found 7/30$347
This lastminute.com deal was found by Cheapflights users on 7/29. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1812:16 pmDTW - ONT
1 stop12h 13mJetBlue
sáb. 9/2010:56 pmONT - DTW
1 stop9h 34mJetBlue
Deal found 7/29$356

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 julio 31, 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

sáb. 8/9

7:15 am-11:50 pm

1 stop19h 35m

Ontario

lun. 8/11

12:59 am-4:20 pm

1 stop12h 21m

$245

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

sáb. 10/4

7:31 am-6:16 pm

1 stop13h 45m

Ontario

mié. 10/8

6:15 am-11:09 pm

1 stop13h 54m

$317

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 8/27

6:30 am-2:09 pm

1 stop10h 39m

Ontario

mié. 9/3

3:06 pm-5:07 am

1 stop11h 01m

$336

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 10/14

6:03 pm-11:39 pm

1 stop8h 36m

Ontario

mié. 10/22

10:29 pm-9:25 am

1 stop7h 56m

$337

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

sáb. 8/23

6:00 am-12:32 pm

2 stops9h 32m

Ontario

mié. 8/27

5:10 am-4:51 pm

2 stops8h 41m

$347

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 9/18

12:16 pm-9:29 pm

1 stop12h 13m

Ontario

sáb. 9/20

10:56 pm-11:30 am

1 stop9h 34m

$356

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 8/26

11:21 am-4:18 pm

1 stop7h 57m

$112

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

sáb. 10/4

8:00 am-7:54 pm

1 stop14h 54m

$116

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 9/10

6:30 am-2:12 pm

1 stop10h 42m

$167

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 8/19

8:20 pm-11:40 pm

1 stop6h 20m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 15 results
1
2

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 julio 31, 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.

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 75% 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 $400.

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 julio 31, 2025.
Read through reviews of airlines operating flights from Detroit to Ontario, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

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

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

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
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

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
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

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
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

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 $245. Other airlines that can offer you cheap pricing are American Airlines, from $317, and Alaska Airlines, from $336. Users have found that Frontier is 35% 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 $116. However, be on the lookout for offers from Hawaiian Airlines and Delta, 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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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 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$154Average$275FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$177Average$206FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$329Average$511FlexibilityNo cancel feeOn-time69%
DeltaCheapest$344Average$436FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$352Average$456FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$390Average$485FlexibilityNo cancel feeOn-time63%

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