HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$76+ Cheap flights from Detroit to Ontario (DTT - 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
abr. 27 — may. 41
dom. 4/27
dom. 5/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Detroit to Ontario 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 Detroit to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) 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 abril 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$181
(CheapOair)

One-way from

$76
(Trip.com)

Popular in

August

Cheapest in

September

Average price

$377
Provider with most accurate pricing for Detroit (DTT)-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-Ontario flights.
Search Deals
From Detroit (DTT) to Ontario
Search Deals
One-way flight from Detroit (DTT) to Ontario
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($5 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 April 2025
Search Deals

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 abril 22, 2025.

This CheapOair deal was found by Cheapflights users on 4/22. 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.
mar. 6/310:06 pmDTW - ONT
1 stop16h 38mFrontier
mié. 6/1112:39 pmONT - DTW
1 stop23h 47mFrontier
Deal found 4/22$181
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/211:26 pmDTW - ONT
2 stops12h 20mMultiple Airlines
mié. 5/286:25 amONT - DTW
1 stop6h 07mMultiple Airlines
Deal found 4/22$369
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/137:00 amDTW - ONT
1 stop9h 26mAlaska Airlines
mar. 8/194:00 pmONT - DTW
1 stop10h 03mAlaska Airlines
Deal found 4/22$386
This Delta deal was found by Cheapflights users on 4/22. 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.
mié. 6/48:18 pmDTW - ONT
1 stop6h 24mDelta
sáb. 6/71:10 pmONT - DTW
1 stop7h 44mDelta
Deal found 4/22$387
This Southwest deal was found by Cheapflights users on 4/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/36:30 amDTW - ONT
2 stops8h 35mSouthwest
mar. 7/81:00 pmONT - DTW
1 stop6h 55mSouthwest
Deal found 4/21$394
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/145:00 amDTW - ONT
2 stops9h 50mAmerican Airlines
lun. 5/1910:40 pmONT - DTW
1 stop9h 37mAmerican Airlines
Deal found 4/20$418
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/22:10 pmDTW - ONT
1 stop11h 16mUnited Airlines
mar. 6/35:10 amONT - DTW
2 stops13h 58mUnited Airlines
Deal found 4/21$468
This Hawaiian Airlines deal was found by Cheapflights users on 4/21. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/154:53 pmDTW - ONT
1 stop8h 53mHawaiian Airlines
mar. 5/204:45 pmONT - DTW
1 stop9h 29mHawaiian Airlines
Deal found 4/21$502

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 abril 22, 2025.
Use the filters below to find and compare flights from Detroit 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

mar. 6/3

10:06 pm-11:44 am

1 stop16h 38m

Ontario

mié. 6/11

12:39 pm-3:26 pm

1 stop23h 47m

$181

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 5/21

1:26 pm-10:46 pm

2 stops12h 20m

Ontario

mié. 5/28

6:25 am-3:32 pm

1 stop6h 07m

$369

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 6/4

8:18 pm-11:42 pm

1 stop6h 24m

Ontario

sáb. 6/7

1:10 pm-11:54 pm

1 stop7h 44m

$387

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 7/3

6:30 am-12:05 pm

2 stops8h 35m

Ontario

mar. 7/8

1:00 pm-10:55 pm

1 stop6h 55m

$394

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

lun. 5/12

5:13 pm-11:59 pm

1 stop9h 46m

Ontario

mar. 5/20

4:45 pm-5:14 am

1 stop9h 29m

$413

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 5/14

5:00 am-11:50 am

2 stops9h 50m

Ontario

lun. 5/19

10:40 pm-11:17 am

1 stop9h 37m

$418

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

lun. 6/2

2:10 pm-10:26 pm

1 stop11h 16m

Ontario

mar. 6/3

5:10 am-10:08 pm

2 stops13h 58m

$468

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 5/15

4:53 pm-10:46 pm

1 stop8h 53m

Ontario

mar. 5/20

4:45 pm-5:14 am

1 stop9h 29m

$502

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 5/27

9:59 pm-11:43 am

1 stop16h 44m

$76

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 4/30

5:20 am-1:37 pm

1 stop11h 17m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 15 results
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice 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-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Detroit-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Detroit-Ontario 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 Detroit-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 to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Detroit to Ontario (average of $246). Flying from Detroit 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 DTT 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 abril 22, 2025.

A simple way to save on the total cost of your ticket is to fly from Detroit to Ontario in the evening. If you’re flexible enough to do this you can expect to save up to 37% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Detroit to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Detroit to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Detroit to Ontario flight should consider departing on Monday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 abril 22, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Detroit to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,906 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,286 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,392 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,683 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    Cheapflights users have booked flights from Detroit to Ontario round-trip from $181. Other airlines that can offer you cheap pricing are Delta, from $387, and Southwest, from $394. Users have found that Frontier is 52% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $76. However, be on the lookout for offers from Alaska Airlines and Delta, as they are both options that can get you from Detroit to Ontario for a low price.

  • 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 to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Detroit to Ontario (average of $246). Flying from Detroit 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

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 Detroit to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
Midway to Las Vegas flights
Detroit to Las Vegas flights
O'Hare Intl to San Diego flights
O'Hare Intl to Santa Ana flights
Detroit to Los Angeles flights
Detroit to San Francisco flights
Midway to Los Angeles flights
O'Hare Intl to Burbank flights
Midway to San Francisco flights
Detroit to San Diego flights
O'Hare Intl to Ontario flights
O'Hare Intl to Sacramento flights
O'Hare Intl to Oakland flights
O'Hare Intl to San Jose flights
Detroit to Santa Ana flights
Midway to San Diego flights
O'Hare Intl to Palm Springs flights
O'Hare Intl to Reno flights
Detroit to Burbank flights
Detroit to Ontario flights
Midway to Santa Ana flights
Grand Rapids to Las Vegas flights
Rockford to Las Vegas flights
Detroit to Oakland flights
Midway to Ontario flights
Detroit to San Jose flights
O'Hare Intl to Fresno flights
Grand Rapids to Santa Ana flights
Traverse City to Las Vegas flights
Grand Rapids to Los Angeles flights
O'Hare Intl to Long Beach flights
Midway to San Jose flights
Flint to Las Vegas flights
Grand Rapids to San Diego flights
Grand Rapids to San Francisco flights
Detroit to Sacramento flights
Midway to Burbank flights
Midway to Palm Springs flights
Midway to Reno flights
Grand Rapids to Ontario flights
Detroit to Reno flights
O'Hare Intl to Medford flights
Midway to Sacramento flights
O'Hare Intl to San Luis Obispo flights
O'Hare Intl to Santa Barbara flights
Detroit to Palm Springs flights
Lansing to Las Vegas flights

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 abril 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$218FlexibilityNo cancel feeOn-time65%
FrontierCheapest$148Average$237FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$336Average$471FlexibilityNo cancel feeOn-time71%
DeltaCheapest$352Average$466FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$390Average$485FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$412Average$559FlexibilityNo cancel feeOn-time69%

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.