How long is the flight from Ontario to Detroit?

Airlines like Frontier and Alaska Airlines fly from Ontario to Detroit in about 6h 34m. The time it takes to get you to your destination can typically vary by up to 14h 42m. Ontario and Detroit are separated by a distance of 1929 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Ontario to Detroit round-trip?

Flying on Spirit Airlines is currently your cheapest option to Detroit, with prices starting at $128. Additional round-trip tickets that might be worth considering are offered by Frontier and Delta, with the lowest prices starting at $155 and $292, respectively. These flights start at 70% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Ontario to Detroit one-way?

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $82. Delta flights start at $146 while deals on Southwest start at $148 one-way.

In terms of precipitation, rainfall in Detroit ranges from 1.8 - 3.1 inches per month. August is typically the wettest month, when rainfall can reach 3.1 in. January is typically the driest time to visit Detroit when rainfall is around 1.8 in.

If weather is an important factor for your trip to Detroit, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

What are the most popular airlines that fly from Ontario to Detroit?

Consider Frontier, American Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Ontario to Detroit.

Most accurate provider : When it comes to deals on Ontario-Detroit flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Detroit flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Detroit flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Detroit flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Detroit flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Ontario to Detroit that include hotel bookings?

Yes. In addition to deals on Ontario to Detroit flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Detroit?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Detroit.

Can I find deals for business class flights from Ontario to Detroit?

Yes. Cheapflights offers flight deals from Ontario to Detroit by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$63+ Flights from Ontario to Detroit

Q: How much does it cost to fly round-trip from Ontario to Detroit?

Airfare is below average for this route at the moment. Ontario to Detroit flights typically cost between $341 and $539 in February. The cheapest round-trip price found within the last 3 days was $174 on Frontier (Feb 20-Feb 23).

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Ontario to Detroit with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Detroit

Cheapest flights from Ontario to Detroit
Explore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Tue 12/306:17 pmONT - DTW

1 stop9h 37mFrontier

Tue 1/67:51 amDTW - ONT

1 stop10h 18mFrontier

Deal found 12/11

$184

Sun 12/286:37 pmONT - DTW

1 stop9h 17mFrontier

Sat 1/37:50 amDTW - ONT

1 stop18h 31mFrontier

Deal found 12/9

$185

Thu 12/256:45 amONT - DTW

1 stop6h 34mFrontier

Thu 1/17:50 amDTW - ONT

1 stop12h 32mFrontier

Deal found 12/9

$208

Sun 12/216:45 amONT - DTW

1 stop25h 40mFrontier

Tue 1/67:51 amDTW - ONT

1 stop28h 59mFrontier

Deal found 12/9

$209

Wed 12/316:00 amONT - DTW

1 stop21h 54mFrontier

Sun 1/47:50 amDTW - ONT

1 stop12h 52mFrontier

Deal found 12/8

$219

Fri 12/265:54 pmONT - DTW

1 stop10h 00mFrontier

Thu 1/17:50 amDTW - ONT

1 stop12h 32mFrontier

Deal found 12/9

$228

Tue 12/236:17 pmONT - DTW

1 stop9h 37mFrontier

Mon 1/57:50 amDTW - ONT

1 stop12h 25mFrontier

Deal found 12/9

$233

Tue 12/236:17 pmONT - DTW

1 stop9h 37mFrontier

Tue 1/67:51 amDTW - ONT

1 stop10h 18mFrontier

Deal found 12/9

$234

Sun 12/216:37 pmONT - DTW

1 stop9h 17mFrontier

Thu 1/17:50 amDTW - ONT

1 stop12h 32mFrontier

Deal found 12/9

$238

Fri 12/265:54 pmONT - DTW

1 stop10h 00mFrontier

Mon 1/512:29 pmDTW - ONT

1 stop8h 01mFrontier

Deal found 12/10

$248

Best flights from Ontario to Detroit
Discover carefully curated flight deals from Ontario to Detroit that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Thu 12/256:45 amONT - DTW

1 stop6h 34mFrontier

Thu 1/17:50 amDTW - ONT

1 stop12h 32mFrontier

Deal found 12/9

$208

Thu 1/224:03 pmONT - DTW

1 stop21h 16mAlaska Airlines

Mon 1/265:15 pmDTW - ONT

1 stop30h 21mAlaska Airlines

Deal found 12/9

$277

Thu 1/812:41 pmONT - DTW

1 stop9h 04mDelta

Tue 1/1312:20 pmDTW - ONT

1 stop13h 31mDelta

Deal found 12/9

$315

Fri 1/305:05 amONT - DTW

1 stop7h 03mUnited Airlines

Sun 2/14:38 pmDTW - ONT

1 stop8h 20mUnited Airlines

Deal found 12/11

$353

Sun 12/216:45 amONT - DTW

1 stop25h 40mFrontier

Mon 1/57:50 amDTW - ONT

1 stop16h 27mFrontier

Deal found 12/9

$238

Mon 1/1211:53 amONT - DTW

1 stop25h 26mAlaska Airlines

Fri 1/165:15 pmDTW - ONT

1 stop30h 21mAlaska Airlines

Deal found 12/10

$287

Fri 12/196:00 amONT - DTW

1 stop21h 54mFrontier

Thu 1/17:50 amDTW - ONT

1 stop12h 32mFrontier

Deal found 12/10

$282

Wed 1/214:03 pmONT - DTW

1 stop21h 16mAlaska Airlines

Tue 1/275:15 pmDTW - ONT

1 stop30h 21mAlaska Airlines

Deal found 12/9

$306

Wed 1/71:11 pmONT - DTW

1 stop7h 48mDelta

Sat 1/172:30 pmDTW - ONT

1 stop9h 35mDelta

Deal found 12/9

$351

Wed 1/144:03 pmONT - DTW

1 stop21h 16mAlaska Airlines

Sat 1/245:15 pmDTW - ONT

1 stop20h 44mAlaska Airlines

Deal found 12/9

$336

Last-minute flights from Ontario to Detroit
Discover last-minute flight deals from Ontario to Detroit. Data last updated December 12, 2025 and is based on user searches.

Thu 12/256:45 amONT - DTW

1 stop6h 34mFrontier

Thu 1/17:50 amDTW - ONT

1 stop12h 32mFrontier

Deal found 12/9

$208

Sun 12/286:37 pmONT - DTW

1 stop9h 17mFrontier

Sat 1/37:50 amDTW - ONT

1 stop18h 31mFrontier

Deal found 12/9

$185

Tue 12/306:17 pmONT - DTW

1 stop9h 37mFrontier

Tue 1/67:51 amDTW - ONT

1 stop10h 18mFrontier

Deal found 12/11

$184

Tue 1/64:04 pmONT - DTW

2 stops26h 54mMultiple Airlines

Tue 1/137:20 pmDTW - ONT

1 stop25h 34mMultiple Airlines

Deal found 12/9

$191

Wed 1/710:45 amONT - DTW

1 stop28h 40mMultiple Airlines

Sun 1/114:43 pmDTW - ONT

1 stop10h 13mMultiple Airlines

Deal found 12/9

$203

Wed 1/710:45 amONT - DTW

1 stop28h 40mMultiple Airlines

Sat 1/109:01 amDTW - ONT

1 stop8h 25mMultiple Airlines

Deal found 12/9

$206

Thu 1/86:00 amONT - DTW

1 stop6h 48mFrontier

Mon 1/1210:59 amDTW - ONT

1 stop13h 24mFrontier

Deal found 12/9

$183

Fri 1/910:18 pmONT - DTW

1 stop27h 12mMultiple Airlines

Fri 1/1612:19 pmDTW - ONT

1 stop14h 40mMultiple Airlines

Deal found 12/8

$207

Thu 1/156:10 amONT - DTW

1 stop26h 14mFrontier

Mon 1/1912:19 pmDTW - ONT

1 stop29h 48mFrontier

Deal found 12/9

$170

Fri 1/306:20 amONT - DTW

1 stop6h 59mFrontier

Sun 2/15:14 pmDTW - ONT

1 stop10h 06mFrontier

Deal found 12/11

$197

One-way flights from Ontario to Detroit
Search for one-way flight options from Ontario to Detroit. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Sat 2/216:00 amONT - DTW

1 stop14h 55mFrontier

Deal found 12/11

$63

Mon 1/266:20 amONT - DTW

1 stop6h 59mFrontier

Deal found 12/10

$74

Sun 2/16:20 amONT - DTW

1 stop6h 59mFrontier

Deal found 12/10

$75

Thu 2/196:05 amONT - DTW

1 stop25h 54mFrontier

Deal found 12/10

$81

Tue 1/273:07 pmONT - DTW

2 stops26h 37mFrontier

Deal found 12/11

$89

Mon 2/26:20 amONT - DTW

1 stop6h 59mFrontier

Deal found 12/10

$92

Thu 1/156:10 amONT - DTW

1 stop26h 14mFrontier

Deal found 12/9

$97

Wed 1/147:15 amONT - DTW

1 stop25h 09mFrontier

Deal found 12/10

$98

Fri 12/265:54 pmONT - DTW

1 stop10h 00mFrontier

Deal found 12/10

$99

Mon 1/126:00 amONT - DTW

1 stop6h 58mFrontier

Deal found 12/9

$112

Sat 1/177:15 amONT - DTW

1 stop25h 09mFrontier

Deal found 12/11

$116

Find flight deals from Ontario to Detroit

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$174 (Mytrip)
One-way from	$63 (Trip.com)
Popular in	January
Cheapest in	September
Average price	$404

Provider with most accurate pricing for Ontario-Detroit (DTT) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Detroit (DTT) flights.

Search Deals

From Ontario to Detroit (DTT)

Search Deals

One-way flight from Ontario to Detroit (DTT)

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($32 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 12/25

6:45 am-4:19 pm

1 stop6h 34m

Detroit Metropolitan Wayne County

Thu 1/1

7:50 am-5:22 pm

1 stop12h 32m

$208

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sun 12/21

6:45 am-11:25 am

1 stop25h 40m

Detroit Metropolitan Wayne County

Mon 1/5

7:50 am-9:17 pm

1 stop16h 27m

$238

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 1/22

4:03 pm-4:19 pm

1 stop21h 16m

Detroit Metropolitan Wayne County

Mon 1/26

5:15 pm-8:36 pm

1 stop30h 21m

$277

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Fri 12/19

6:00 am-6:54 am

1 stop21h 54m

Detroit Metropolitan Wayne County

Thu 1/1

7:50 am-5:22 pm

1 stop12h 32m

$282

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Mon 1/12

11:53 am-4:19 pm

1 stop25h 26m

Detroit Metropolitan Wayne County

Fri 1/16

5:15 pm-8:36 pm

1 stop30h 21m

$287

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 1/21

4:03 pm-4:19 pm

1 stop21h 16m

Detroit Metropolitan Wayne County

Tue 1/27

5:15 pm-8:36 pm

1 stop30h 21m

$306

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 1/8

12:41 pm-12:45 am

1 stop9h 04m

Detroit Metropolitan Wayne County

Tue 1/13

12:20 pm-10:51 pm

1 stop13h 31m

$315

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 1/14

4:03 pm-4:19 pm

1 stop21h 16m

Detroit Metropolitan Wayne County

Sat 1/24

5:15 pm-10:59 am

1 stop20h 44m

$336

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 1/7

1:11 pm-11:59 pm

1 stop7h 48m

Detroit Metropolitan Wayne County

Sat 1/17

2:30 pm-9:05 pm

1 stop9h 35m

$351

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Fri 1/30

5:05 am-3:08 pm

1 stop7h 03m

Detroit Metropolitan Wayne County

Sun 2/1

4:38 pm-9:58 pm

1 stop8h 20m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 21 results

Compare providers for flights from Ontario to Detroit

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Detroit in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*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 Ontario-Detroit flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Detroit flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Detroit flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Detroit flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Detroit 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 Ontario to Detroit

Have a flexible travel schedule? Discover the best time to fly to Detroit from Ontario 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 Ontario to Detroit

What is the cheapest month to book a flight from Ontario to Detroit?

Currently, February is the cheapest month in which you can book a flight from Ontario to Detroit (average of $99). Flying from Ontario to Detroit in June is currently the most expensive (average of $173). 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 ONT to DTT?

It’s optimal to fly from Ontario to Detroit in the afternoon. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Ontario to Detroit?

Reviews of airlines servicing Detroit

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Ontario to Detroit. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Southwest

7.9

Good

4,253 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Delta

7.9

Good

8,008 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

United Airlines

7.4

Good

9,095 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

American Airlines

7.2

Good

11,050 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Frontier

5.8

Fair

3,084 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

How long is the flight from Ontario to Detroit?
Airlines like Frontier and Alaska Airlines fly from Ontario to Detroit in about 6h 34m. The time it takes to get you to your destination can typically vary by up to 14h 42m. Ontario and Detroit are separated by a distance of 1929 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Ontario to Detroit round-trip?
Flying on Spirit Airlines is currently your cheapest option to Detroit, with prices starting at $128. Additional round-trip tickets that might be worth considering are offered by Frontier and Delta, with the lowest prices starting at $155 and $292, respectively. These flights start at 70% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Ontario to Detroit one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $82. Delta flights start at $146 while deals on Southwest start at $148 one-way.
Can I find deals for flights from Ontario to Detroit that include hotel bookings?
Yes. In addition to deals on Ontario to Detroit flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Detroit?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Detroit.
Can I find deals for business class flights from Ontario to Detroit?
Yes. Cheapflights offers flight deals from Ontario to Detroit 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 Ontario to Detroit?
Currently, February is the cheapest month in which you can book a flight from Ontario to Detroit (average of $99). Flying from Ontario to Detroit in June is currently the most expensive (average of $173). 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

Roseville

Port Huron

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Ontario to Detroit

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$147	Average$177	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$155	Average$281	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$292	Average$439	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$310	Average$469	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$362	Average$624	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$394	Average$509	FlexibilityNo cancel fee	On-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$63+ Cheap flights from Ontario to Detroit (ONT - DTT)

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.

Find cheap flights from Ontario to Detroit with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Detroit

Cheapest flights from Ontario to DetroitExplore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from Ontario to Detroit

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Detroit that are best for you.

Compare providers for flights from Ontario to Detroit

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 Ontario to Detroit in December.

Best time to book a flight from Ontario to Detroit

Have a flexible travel schedule? Discover the best time to fly to Detroit from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Detroit

What is the cheapest month to book a flight from Ontario to Detroit?

What is the cheapest time of day to fly from ONT to DTT?

Find hourly flight availability from Ontario to Detroit. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

How much does it cost to fly round-trip from Ontario to Detroit?

Reviews of airlines servicing Detroit

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Ontario to Detroit. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Detroit. 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 Ontario to Detroit?

What are the cheapest airlines flying from Ontario to Detroit round-trip?

What are the cheapest airlines to fly from Ontario to Detroit one-way?

Can I find deals for flights from Ontario to Detroit that include hotel bookings?

How can I find direct flights from Ontario to Detroit?

Can I find deals for business class flights from Ontario to Detroit?

What is the cheapest month to book a flight from Ontario to Detroit?

Traveling to a place near Detroit?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Detroit

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Ontario to Detroit

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ontario to Detroit
Explore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.