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$75+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DTT
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
1 adult, Economy
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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 diciembre 4, 2025.

This Frontier deal was found by Cheapflights users on 12/2. 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.
mié. 12/316:00 pmONT - DTW
1 stop9h 54mFrontier
lun. 1/265:14 pmDTW - ONT
1 stop10h 06mFrontier
Deal found 12/2$167
This Frontier deal was found by Cheapflights users on 12/3. 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.
mar. 12/306:17 pmONT - DTW
1 stop9h 37mFrontier
mar. 1/67:51 amDTW - ONT
1 stop10h 18mFrontier
Deal found 12/3$183
This Frontier deal was found by Cheapflights users on 12/2. 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.
mié. 12/246:00 pmONT - DTW
1 stop9h 54mFrontier
jue. 1/17:50 amDTW - ONT
1 stop12h 32mFrontier
Deal found 12/2$184
This CheapOair deal was found by Cheapflights users on 12/2. 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.
sáb. 12/206:45 amONT - DTW
1 stop25h 40mFrontier
mar. 1/67:51 amDTW - ONT
1 stop10h 18mFrontier
Deal found 12/2$185
This Frontier deal was found by Cheapflights users on 12/3. 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.
mar. 12/306:17 pmONT - DTW
1 stop9h 37mFrontier
lun. 1/57:50 amDTW - ONT
1 stop12h 25mFrontier
Deal found 12/3$203
This Gotogate deal was found by Cheapflights users on 12/2. 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.
lun. 12/226:00 pmONT - DTW
1 stop9h 54mFrontier
sáb. 1/37:50 amDTW - ONT
1 stop18h 31mFrontier
Deal found 12/2$204
This CheapOair deal was found by Cheapflights users on 12/2. 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.
sáb. 12/133:20 pmONT - DTW
1 stop21h 59mFrontier
sáb. 1/37:50 amDTW - ONT
1 stop18h 31mFrontier
Deal found 12/2$205
This Frontier deal was found by Cheapflights users on 12/2. 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.
jue. 12/186:45 amONT - DTW
1 stop11h 21mFrontier
jue. 1/17:50 amDTW - ONT
1 stop12h 32mFrontier
Deal found 12/2$208
This CheapOair deal was found by Cheapflights users on 12/2. 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.
jue. 12/256:45 amONT - DTW
1 stop6h 34mFrontier
dom. 1/410:01 pmDTW - ONT
1 stop28h 58mFrontier
Deal found 12/2$209
This Frontier deal was found by Cheapflights users on 12/2. 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.
lun. 12/296:00 pmONT - DTW
1 stop9h 54mFrontier
lun. 1/265:14 pmDTW - ONT
1 stop10h 06mFrontier
Deal found 12/2$217
This Gotogate deal was found by Cheapflights users on 12/2. 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.
mié. 12/246:00 pmONT - DTW
1 stop9h 54mFrontier
vie. 1/27:50 amDTW - ONT
1 stop16h 27mFrontier
Deal found 12/2$218
This Frontier deal was found by Cheapflights users on 12/2. 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.
mié. 12/316:00 pmONT - DTW
1 stop9h 54mFrontier
vie. 1/235:14 pmDTW - ONT
1 stop10h 06mFrontier
Deal found 12/2$219

Find flight deals from Ontario to Detroit

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Detroit (DTT). 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 diciembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$148
(Frontier)

One-way from

$75
(CheapOair)

Popular in

January

Cheapest in

September

Average price

$426
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. 7% potential increase in price ($36 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

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Detroit 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 diciembre 4, 2025.
Use the filters below to find and compare flights from Ontario to Detroit that are best for you.

Fly from

Ontario

Fly to

Detroit

Route

Depart

Return

Price

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 1/21

9:59 am-10:35 pm

2 stops9h 36m

Detroit Metropolitan Wayne County

mar. 1/27

8:00 am-4:05 pm

2 stops11h 05m

$217

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 2/25

7:30 am-6:30 am

1 stop20h 00m

Detroit Metropolitan Wayne County

jue. 3/5

8:05 pm-10:37 pm

1 stop29h 32m

$265

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 1/22

3:30 pm-1:21 pm

1 stop18h 51m

Detroit Metropolitan Wayne County

lun. 1/26

7:45 pm-1:56 pm

1 stop21h 11m

$265

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mar. 2/24

7:30 am-1:11 pm

1 stop26h 41m

Detroit Metropolitan Wayne County

jue. 3/5

8:05 pm-10:37 pm

1 stop29h 32m

$265

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 2/26

3:30 pm-1:11 pm

1 stop18h 41m

Detroit Metropolitan Wayne County

mar. 3/3

8:05 pm-10:37 pm

1 stop29h 32m

$265

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

sáb. 1/17

4:03 pm-4:19 pm

1 stop21h 16m

Detroit Metropolitan Wayne County

mié. 1/21

5:15 pm-3:08 pm

1 stop24h 53m

$284

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

sáb. 1/24

4:03 pm-4:19 pm

1 stop21h 16m

Detroit Metropolitan Wayne County

sáb. 1/31

5:15 pm-10:59 am

1 stop20h 44m

$284

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mar. 1/20

4:03 pm-4:19 pm

1 stop21h 16m

Detroit Metropolitan Wayne County

sáb. 1/24

5:15 pm-10:59 am

1 stop20h 44m

$309

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mar. 2/17

9:55 am-9:45 pm

2 stops8h 50m

Detroit Metropolitan Wayne County

sáb. 2/21

3:50 pm-10:45 pm

2 stops9h 55m

$316

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 2/5

11:53 am-4:19 pm

1 stop25h 26m

Detroit Metropolitan Wayne County

lun. 2/9

5:15 pm-3:08 pm

1 stop24h 53m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 24 results
1
2
3

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.
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
CheapfaremartPrice 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 December is currently the most expensive (average of $176). 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?

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 diciembre 4, 2025.

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

Get insights into the airlines that provide service to Detroit. 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 Detroit. Reviews last updated diciembre 4, 2025.
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
8.0
Very good
4,250 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

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
8.0
Very good
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

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
8,011 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

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
9,066 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

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
11,047 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

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
3,091 reviews
Southwest
8.0
Very good
4,250 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

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

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?

    Airlines like American Airlines and Delta fly from Ontario to Detroit in about 9h 36m. The time it takes to get you to your destination can typically vary by up to 10h 24m. 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 71% 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 December is currently the most expensive (average of $176). 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

Traveling to a place near Detroit?

Book flights to Detroit if you plan to visit one of these locations
Roseville
Port Huron

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Top 6 airlines flying from Ontario to Detroit

Discover the top 6 airlines that operate flights from Ontario to Detroit. 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 diciembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$147Average$177FlexibilityNo cancel feeOn-time65%
FrontierCheapest$155Average$281FlexibilityNo cancel feeOn-time62%
DeltaCheapest$292Average$439FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$310Average$469FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$362Average$624FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$394Average$509FlexibilityNo cancel feeOn-time63%

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