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$65+ Cheap flights from Detroit Metropolitan Wayne County Airport to Ontario (DTW - 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ONT
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit Metropolitan Wayne County to Ontario are usually found in June or October, booked 62 days in advance, depart on a Sunday or Monday and return on a Friday

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 octubre 30, 2025.

This CheapOair deal was found by Cheapflights users on 10/30. 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.
lun. 11/175:14 pmDTW - ONT
1 stop9h 36mFrontier
mié. 11/198:00 amONT - DTW
1 stop19h 05mFrontier
Deal found 10/30$130
This Frontier deal was found by Cheapflights users on 10/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/145:14 pmDTW - ONT
1 stop9h 36mFrontier
lun. 11/177:54 amONT - DTW
1 stop7h 18mFrontier
Deal found 10/29$137
This CheapOair deal was found by Cheapflights users on 10/30. 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.
vie. 12/55:20 pmDTW - ONT
1 stop24h 05mFrontier
dom. 12/72:59 pmONT - DTW
1 stop17h 00mFrontier
Deal found 10/30$138
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/811:44 amDTW - ONT
1 stop7h 49mFrontier
jue. 12/1112:04 pmONT - DTW
1 stop25h 15mFrontier
Deal found 10/28$150
This Trip.com deal was found by Cheapflights users on 10/30. 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.
mar. 12/99:40 amDTW - ONT
1 stop14h 37mMultiple Airlines
sáb. 12/133:20 pmONT - DTW
1 stop21h 59mMultiple Airlines
Deal found 10/30$156
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/105:14 pmDTW - ONT
1 stop9h 36mFrontier
lun. 11/177:54 amONT - DTW
1 stop7h 18mFrontier
Deal found 10/28$176
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/135:14 pmDTW - ONT
1 stop9h 36mFrontier
mié. 11/198:00 amONT - DTW
1 stop19h 05mFrontier
Deal found 10/27$177
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/99:15 pmDTW - ONT
1 stop16h 55mFrontier
jue. 11/137:22 amONT - DTW
1 stop8h 11mFrontier
Deal found 10/28$182
This Priceline deal was found by Cheapflights users on 10/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/105:14 pmDTW - ONT
1 stop9h 36mFrontier
vie. 11/146:53 amONT - DTW
1 stop6h 26mFrontier
Deal found 10/30$183
This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/125:20 pmDTW - ONT
1 stop24h 05mFrontier
dom. 12/142:59 pmONT - DTW
1 stop17h 00mFrontier
Deal found 10/29$189

Cheap flight deals from Detroit to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTW) 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 octubre 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$65
(Frontier)

Popular in

December

Cheapest in

June

Average price

$362
Provider with most accurate pricing for Detroit Metropolitan Wayne County-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit Metropolitan Wayne County-Ontario flights.
Search Deals
From Detroit Metropolitan Wayne County to Ontario
Search Deals
One-way flight from Detroit Metropolitan Wayne County to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 octubre 30, 2025.
Use the filters below to find and compare flights from Detroit Metropolitan Wayne County Airport 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

jue. 11/20

5:45 am-11:06 am

1 stop8h 21m

Ontario

jue. 11/27

6:00 am-5:15 pm

1 stop8h 15m

$363

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 11/19

5:45 am-10:34 am

1 stop7h 49m

Ontario

jue. 11/27

7:05 am-6:43 pm

1 stop8h 38m

$363

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 11/20

5:45 am-11:06 am

1 stop8h 21m

Ontario

lun. 12/1

10:25 pm-9:30 am

1 stop8h 05m

$378

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 11/19

8:12 pm-11:52 pm

1 stop6h 40m

Ontario

lun. 12/1

10:25 pm-9:30 am

1 stop8h 05m

$378

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

lun. 11/24

5:54 pm-11:52 pm

1 stop8h 58m

Ontario

lun. 12/1

10:25 pm-9:30 am

1 stop8h 05m

$378

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 11/27

2:41 pm-7:42 pm

1 stop8h 01m

Ontario

mar. 12/2

1:29 pm-12:20 am

1 stop7h 51m

$385

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 1/13

5:15 pm-8:36 pm

1 stop30h 21m

Ontario

sáb. 1/17

11:53 am-4:19 pm

1 stop25h 26m

$392

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 11/27

2:41 pm-7:42 pm

1 stop8h 01m

Ontario

lun. 12/8

5:49 pm-6:39 am

1 stop9h 50m

$400

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 11/27

12:20 pm-7:42 pm

1 stop10h 22m

Ontario

jue. 12/4

12:12 pm-12:43 am

1 stop9h 31m

$400

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 12/16

8:12 pm-11:13 am

1 stop18h 01m

Ontario

lun. 12/22

1:15 pm-12:27 am

1 stop8h 12m

$410

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 23 results
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice 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 Metropolitan Wayne County Airport-Ontario flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Detroit Metropolitan Wayne County Airport-Ontario flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Detroit Metropolitan Wayne County Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Detroit Metropolitan Wayne County Airport-Ontario flights, Cheapflights users trust CheapOair the most. CheapOair 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 Metropolitan Wayne County Airport-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 Metropolitan Wayne County Airport to Ontario

How far ahead should I book a flight from Detroit Metropolitan Wayne County Airport to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Detroit to Ontario. Price data was last updated on October 24, 2025.

The best time to book flights from Detroit Metropolitan Wayne County Airport to Ontario is 62 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Detroit Metropolitan Wayne County Airport to Ontario?

Currently, August is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to Ontario (average of $104). Flying from Detroit Metropolitan Wayne County Airport to Ontario in June is currently the most expensive (average of $159). 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 DTW 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 octubre 30, 2025.

It’s optimal to fly from Detroit Metropolitan Wayne County Airport to Ontario in the evening. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the afternoon.

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 octubre 30, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Detroit Metropolitan Wayne County Airport to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 Metropolitan Wayne County Airport to Ontario?

    Delta can get you from Detroit Metropolitan Wayne County Airport to Ontario in just under 8h 21m. Your travel time can differ by up to . There are 1929 mi between Detroit Metropolitan Wayne County Airport and Ontario.

  • What are the cheapest airlines flying from Detroit Metropolitan Wayne County Airport to Ontario round-trip?

    Cheapflights users have booked flights from Detroit Metropolitan Wayne County Airport to Ontario round-trip from $162. Other airlines that can offer you cheap pricing are American Airlines, from $329, and United Airlines, from $329. Users have found that Frontier is 62% cheaper than the other options available to this destination.

  • 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 Metropolitan Wayne County Airport to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to Ontario (average of $104). Flying from Detroit Metropolitan Wayne County Airport to Ontario in June is currently the most expensive (average of $159). 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 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$162Average$319FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$329Average$502FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$329Average$451FlexibilityNo cancel feeOn-time71%
DeltaCheapest$344Average$434FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$389Average$483FlexibilityNo cancel feeOn-time63%

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