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$80+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ONT
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Detroit Metropolitan Wayne County to Ontario are usually found in June or September, booked 33 days in advance, depart on a Sunday or Monday and return on a Friday

Cheap 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 December 15, 2025.

This CheapOair deal was found by Cheapflights users on 12/14. 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.
Tue 12/2310:01 pmDTW - ONT
1 stop28h 58mFrontier
Wed 12/316:00 amONT - DTW
1 stop21h 54mFrontier
Deal found 12/14$235
This CheapOair deal was found by Cheapflights users on 12/14. 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.
Thu 12/2510:01 pmDTW - ONT
1 stop28h 58mFrontier
Wed 12/316:00 amONT - DTW
1 stop21h 54mFrontier
Deal found 12/14$255
This Frontier deal was found by Cheapflights users on 12/13. 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.
Thu 12/185:14 pmDTW - ONT
1 stop9h 45mFrontier
Thu 12/256:07 pmONT - DTW
1 stop9h 47mFrontier
Deal found 12/13$278
This CheapOair deal was found by Cheapflights users on 12/14. 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.
Wed 12/3112:20 pmDTW - ONT
1 stop14h 39mFrontier
Thu 1/16:45 amONT - DTW
1 stop25h 40mFrontier
Deal found 12/14$308
This Frontier deal was found by Cheapflights users on 12/14. 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.
Thu 12/255:14 pmDTW - ONT
1 stop9h 45mFrontier
Mon 12/296:00 pmONT - DTW
1 stop9h 54mFrontier
Deal found 12/14$333
This Delta deal was found by Cheapflights users on 12/13. 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 12/246:00 pmDTW - ONT
1 stop7h 33mDelta
Wed 12/3111:15 amONT - DTW
1 stop7h 54mDelta
Deal found 12/13$339
This Mytrip deal was found by Cheapflights users on 12/14. 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.
Tue 12/2310:01 pmDTW - ONT
1 stop28h 58mFrontier
Sun 12/286:37 pmONT - DTW
1 stop9h 17mFrontier
Deal found 12/14$353
This CheapOair deal was found by Cheapflights users on 12/14. 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.
Tue 12/3010:01 pmDTW - ONT
1 stop28h 58mFrontier
Sun 1/46:45 amONT - DTW
1 stop25h 40mFrontier
Deal found 12/14$354
This Frontier deal was found by Cheapflights users on 12/15. 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.
Mon 12/2212:29 pmDTW - ONT
1 stop8h 01mFrontier
Mon 12/296:00 pmONT - DTW
1 stop9h 54mFrontier
Deal found 12/15$362
This Frontier deal was found by Cheapflights users on 12/13. 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.
Thu 12/255:14 pmDTW - ONT
1 stop9h 45mFrontier
Tue 12/306:17 pmONT - DTW
1 stop9h 37mFrontier
Deal found 12/13$363
This CheapOair deal was found by Cheapflights users on 12/14. 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.
Wed 12/2412:20 pmDTW - ONT
1 stop14h 39mFrontier
Mon 1/56:00 pmONT - DTW
1 stop9h 54mFrontier
Deal found 12/14$364
This Priceline deal was found by Cheapflights users on 12/13. 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.
Thu 12/255:14 pmDTW - ONT
1 stop9h 45mFrontier
Sat 12/275:16 pmONT - DTW
1 stop10h 38mFrontier
Deal found 12/13$367

Find 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 December 15, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$166
(CheapOair)

One-way from

$80
(Super.com)

Popular in

November

Cheapest in

June

Average price

$413
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. 6% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 15, 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

Fri 1/30

5:15 pm-3:08 pm

1 stop24h 53m

Ontario

Tue 2/3

11:53 am-4:19 pm

1 stop25h 26m

$306

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 1/21

5:15 pm-3:08 pm

1 stop24h 53m

Ontario

Wed 1/28

11:53 am-4:19 pm

1 stop25h 26m

$306

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 1/29

5:15 pm-11:56 pm

1 stop9h 41m

Ontario

Fri 2/6

4:03 pm-4:19 pm

1 stop21h 16m

$306

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 1/17

5:15 pm-10:59 am

1 stop20h 44m

Ontario

Tue 1/27

4:03 pm-4:19 pm

1 stop21h 16m

$327

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 1/28

5:15 pm-10:59 am

1 stop20h 44m

Ontario

Sat 1/31

4:03 pm-4:19 pm

1 stop21h 16m

$327

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 1/15

8:00 am-12:16 pm

1 stop7h 16m

Ontario

Wed 1/21

7:30 am-6:30 am

1 stop20h 00m

$330

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 2/1

5:15 pm-3:08 pm

1 stop24h 53m

Ontario

Sat 2/7

11:53 am-4:19 pm

1 stop25h 26m

$345

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 2/4

2:15 pm-9:05 pm

1 stop9h 50m

Ontario

Sun 2/8

10:30 pm-9:30 am

1 stop8h 00m

$346

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 2/6

5:15 am-11:31 am

1 stop9h 16m

Ontario

Tue 3/3

10:20 pm-9:30 am

1 stop8h 10m

$346

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 3/13

5:22 pm-11:32 pm

1 stop9h 10m

Ontario

Mon 3/23

6:00 am-3:38 pm

1 stop30h 38m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 24 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 December.
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 December 12, 2025.

The best time to book flights from Detroit Metropolitan Wayne County Airport to Ontario is 33 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, February is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to Ontario (average of $103). 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 December 15, 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 December 15, 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
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

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
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

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
8,008 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

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
9,092 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

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
11,052 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

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
3,080 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Overall

7.9

Comfort

8.0

Entertainment

7.5

Food

7.0

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?

    Alaska Airlines can get you from Detroit Metropolitan Wayne County Airport to Ontario in just under 24h 53m. 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 $155. Other airlines that can offer you cheap pricing are United Airlines, from $266, and American Airlines, from $329. Users have found that Frontier is 64% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Detroit Metropolitan Wayne County Airport to Ontario one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $65. American Airlines flights start at $146 while deals on United Airlines start at $159 one-way.

  • 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, February is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to Ontario (average of $103). 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.

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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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$155Average$316FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$329Average$511FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$329Average$421FlexibilityNo cancel feeOn-time71%
DeltaCheapest$344Average$430FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$386Average$476FlexibilityNo cancel feeOn-time63%

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