HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$126+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ONT
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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.

Cheapflights Tip: The best prices from Detroit Metropolitan Wayne County to Ontario are usually found in August or October, booked 80 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 junio 12, 2025.

Round-trip from

$225
(Booking.com)

One-way from

$132
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$344
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. 17% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 junio 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/9. 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.
lun. 6/3010:07 pmDTW - ONT
1 stop26h 44mFrontier
mié. 7/97:22 pmONT - DTW
1 stop17h 06mFrontier
Deal found 6/9$225
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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. 9/254:51 pmDTW - ONT
1 stop10h 08mHawaiian Airlines
mar. 9/303:04 pmONT - DTW
1 stop11h 01mHawaiian Airlines
Deal found 6/11$296
This American Airlines deal was found by Cheapflights users on 6/11. 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.
jue. 10/27:45 pmDTW - ONT
1 stop7h 14mAmerican Airlines
mié. 10/86:47 amONT - DTW
1 stop5h 41mAmerican Airlines
Deal found 6/11$298
This Delta deal was found by Cheapflights users on 6/11. 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. 8/66:00 amDTW - ONT
1 stop10h 34mDelta
sáb. 8/911:40 amONT - DTW
1 stop10h 18mDelta
Deal found 6/11$330
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1912:16 pmDTW - ONT
1 stop12h 13mJetBlue
vie. 9/2610:56 pmONT - DTW
1 stop9h 34mJetBlue
Deal found 6/11$377
This United Airlines deal was found by Cheapflights users on 6/11. 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.
jue. 10/235:45 pmDTW - ONT
1 stop7h 57mUnited Airlines
mar. 10/281:00 pmONT - DTW
1 stop6h 23mUnited Airlines
Deal found 6/11$387

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 junio 12, 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

lun. 6/30

10:07 pm-9:51 pm

1 stop26h 44m

Ontario

mié. 7/9

7:22 pm-3:28 pm

1 stop17h 06m

$225

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 9/25

4:51 pm-11:59 pm

1 stop10h 08m

Ontario

mar. 9/30

3:04 pm-5:05 am

1 stop11h 01m

$296

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 10/2

7:45 pm-11:59 pm

1 stop7h 14m

Ontario

mié. 10/8

6:47 am-3:28 pm

1 stop5h 41m

$298

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mié. 8/6

6:00 am-1:34 pm

1 stop10h 34m

Ontario

sáb. 8/9

11:40 am-12:58 am

1 stop10h 18m

$330

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 6/26

6:00 am-11:50 pm

1 stop20h 50m

Ontario

sáb. 7/5

7:00 am-5:40 am

1 stop19h 40m

$355

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

jue. 10/23

5:45 pm-10:42 pm

1 stop7h 57m

Ontario

mar. 10/28

1:00 pm-10:23 pm

1 stop6h 23m

$387

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

lun. 10/20

6:00 am-9:51 am

1 stop6h 51m

$126

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

vie. 7/18

9:53 pm-4:20 pm

1 stop21h 27m

$142

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

mar. 9/16

6:30 am-2:09 pm

1 stop10h 39m

$148

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

sáb. 9/27

7:36 am-11:56 am

1 stop7h 20m

$183

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 15 results
1
2

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 June 9, 2025.

The best time to book flights from Detroit Metropolitan Wayne County Airport to Ontario is 79 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 junio 12, 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.

What is the cheapest day to fly from Detroit Metropolitan Wayne County Airport 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 Metropolitan Wayne County Airport to Ontario flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday evenings 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 junio 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Detroit to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 Metropolitan Wayne County Airport to Ontario round-trip?

    Cheapflights users have booked flights from Detroit Metropolitan Wayne County Airport to Ontario round-trip from $225. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $296, and Delta, from $330. Users have found that Frontier is 45% 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 $132. Alaska Airlines flights start at $148 while deals on JetBlue start at $189 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, 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

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.
Detroit to Las Vegas flights
Detroit to Los Angeles flights
Detroit to San Francisco flights
Detroit to San Diego flights
Detroit to Santa Ana flights
Detroit to Burbank flights
Detroit to Oakland flights
Detroit to San Jose flights
Detroit to Sacramento flights
Detroit to Reno flights
Detroit to Palm Springs flights
Detroit to Long Beach flights
Detroit to Fresno flights
Detroit to Medford flights
Detroit to Santa Barbara flights
Detroit to Monterey flights
Detroit to San Luis Obispo flights
Detroit to Santa Rosa flights
Detroit to Tijuana flights
Detroit to Redding flights
Detroit to Arcata flights
Detroit to Bakersfield flights
Detroit to Yuma flights
Detroit to Mammoth Lakes flights
Detroit to Merced 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$206FlexibilityNo cancel feeOn-time65%
FrontierCheapest$154Average$242FlexibilityNo cancel feeOn-time62%
DeltaCheapest$344Average$433FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$352Average$466FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$390Average$484FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$412Average$565FlexibilityNo 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.