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$103+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ONT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit Metropolitan Wayne County to Ontario are usually found in October or June, booked 35 days in advance, depart on a Sunday or Monday and return on a Friday

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 September 15, 2025.

Round-trip from

$148
(Mytrip)

One-way from

$103
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$377
From Detroit Metropolitan Wayne County to Ontario
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One-way flight from Detroit Metropolitan Wayne County to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amDTW - ONT
1 stop20h 50mFrontier
Wed 10/226:53 amONT - DTW
1 stop15h 06mFrontier
Deal found 9/13$148
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:00 amDTW - ONT
1 stop6h 35mFrontier
Tue 10/147:04 amONT - DTW
1 stop14h 55mFrontier
Deal found 9/13$149
This Frontier deal was found by Cheapflights users on 9/13. 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 10/211:54 amDTW - ONT
1 stop11h 00mFrontier
Sat 10/48:59 pmONT - DTW
1 stop11h 05mFrontier
Deal found 9/13$158
This Frontier deal was found by Cheapflights users on 9/13. 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 10/96:00 amDTW - ONT
1 stop6h 35mFrontier
Sat 10/118:34 amONT - DTW
1 stop7h 59mFrontier
Deal found 9/13$162
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/278:00 amDTW - ONT
1 stop26h 23mFrontier
Tue 9/308:59 pmONT - DTW
1 stop24h 47mFrontier
Deal found 9/14$164
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/101:49 pmDTW - ONT
1 stop21h 00mFrontier
Tue 10/147:04 amONT - DTW
1 stop14h 55mFrontier
Deal found 9/13$172
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:00 amDTW - ONT
1 stop26h 23mFrontier
Sat 9/278:59 pmONT - DTW
1 stop24h 47mFrontier
Deal found 9/13$173
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:10 amDTW - ONT
1 stop28h 43mFrontier
Sun 9/287:15 pmONT - DTW
1 stop11h 32mFrontier
Deal found 9/14$178
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:14 pmDTW - ONT
1 stop9h 36mFrontier
Mon 11/36:53 amONT - DTW
1 stop6h 26mFrontier
Deal found 9/14$179
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/65:14 pmDTW - ONT
1 stop9h 36mFrontier
Mon 11/106:53 amONT - DTW
1 stop6h 26mFrontier
Deal found 9/13$180
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:14 pmDTW - ONT
1 stop9h 36mFrontier
Mon 11/176:53 amONT - DTW
1 stop6h 26mFrontier
Deal found 9/14$184
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:00 amDTW - ONT
1 stop20h 50mFrontier
Sat 10/257:04 amONT - DTW
1 stop14h 55mFrontier
Deal found 9/13$185

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 September 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

Sat 10/11

7:55 am-11:50 pm

1 stop18h 55m

Ontario

Wed 10/15

6:53 am-12:59 am

1 stop15h 06m

$149

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 10/30

5:14 pm-11:50 pm

1 stop9h 36m

Ontario

Mon 11/3

6:53 am-4:19 pm

1 stop6h 26m

$179

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 9/28

6:10 am-7:53 am

1 stop28h 43m

Ontario

Wed 10/1

8:59 pm-10:54 am

1 stop10h 55m

$193

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 9/21

6:10 am-7:53 am

1 stop28h 43m

Ontario

Tue 9/23

8:59 pm-12:46 am

1 stop24h 47m

$217

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 10/16

6:00 am-11:50 pm

1 stop20h 50m

Ontario

Sun 10/19

6:53 am-12:59 am

1 stop15h 06m

$238

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 10/21

2:22 pm-8:42 pm

1 stop9h 20m

Ontario

Tue 11/4

8:00 am-11:49 pm

1 stop12h 49m

$268

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 10/7

5:45 am-10:26 am

1 stop7h 41m

Ontario

Wed 10/15

10:00 pm-9:25 am

1 stop8h 25m

$277

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 10/7

8:10 pm-11:39 pm

1 stop6h 29m

Ontario

Tue 10/21

1:15 pm-11:59 pm

1 stop7h 44m

$277

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 10/6

8:10 pm-11:39 pm

1 stop6h 29m

Ontario

Thu 10/16

1:15 pm-11:59 pm

1 stop7h 44m

$277

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 10/1

7:10 am-1:10 pm

2 stops9h 00m

Ontario

Wed 11/5

5:55 am-5:50 pm

2 stops8h 55m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 22 results
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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 September 12, 2025.

The best time to book flights from Detroit Metropolitan Wayne County Airport to Ontario is 35 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 $246). Flying from Detroit Metropolitan Wayne County Airport 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 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 September 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 36% 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 September 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
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

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
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

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
8.0
Very good
7,956 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

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
8,931 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

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
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

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
3,173 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

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?

    Frontier can get you from Detroit Metropolitan Wayne County Airport to Ontario in just under 18h 55m. 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 $149. Other airlines that can offer you cheap pricing are Spirit Airlines, from $177, and American Airlines, from $329. Users have found that Frontier is 65% 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 $246). Flying from Detroit Metropolitan Wayne County Airport 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

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$155Average$287FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$177Average$204FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$329Average$511FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$329Average$455FlexibilityNo cancel feeOn-time71%
DeltaCheapest$344Average$430FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$390Average$495FlexibilityNo cancel feeOn-time63%

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