HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$135+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ONT
Mar 25 — Apr 11
Tue 3/25
Tue 4/1
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 33 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 March 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$332
(Flightnetwork)

One-way from

$135
(CheapOair)

Popular in

December

Cheapest in

August

Average price

$430
Provider with most accurate pricing for Detroit Metropolitan Wayne County-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit Metropolitan Wayne County-Ontario flights.
Search Deals
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. 22% potential increase in price ($111 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 20, 2025.

This Flightnetwork deal was found by Cheapflights users on 3/18. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/102:42 pmDTW - ONT
1 stop21h 40mFrontier
Wed 4/163:17 pmONT - DTW
1 stop19h 35mFrontier
Deal found 3/18$264
This Delta deal was found by Cheapflights users on 3/17. 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.
Tue 4/158:10 pmDTW - ONT
1 stop6h 31mDelta
Tue 4/227:00 amONT - DTW
1 stop6h 45mDelta
Deal found 3/17$353
This American Airlines deal was found by Cheapflights users on 3/18. 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.
Thu 4/107:37 pmDTW - ONT
1 stop7h 13mAmerican Airlines
Wed 4/1610:54 amONT - DTW
1 stop6h 22mAmerican Airlines
Deal found 3/18$354
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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.
Fri 4/115:10 pmDTW - ONT
1 stop9h 49mAlaska Airlines
Thu 4/246:24 pmONT - DTW
1 stop7h 47mAlaska Airlines
Deal found 3/18$377
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Tue 4/224:20 pmDTW - ONT
1 stop7h 22mUnited Airlines
Fri 4/256:39 pmONT - DTW
2 stops12h 15mUnited Airlines
Deal found 3/19$383
This Southwest deal was found by Cheapflights users on 3/19. 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.
Sat 6/282:55 pmDTW - ONT
2 stops10h 45mSouthwest
Sat 7/510:00 amONT - DTW
2 stops10h 05mSouthwest
Deal found 3/19$422
This Trip.com deal was found by Cheapflights users on 3/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/265:20 amDTW - ONT
1 stop11h 23mMultiple Airlines
Wed 4/23:17 pmONT - DTW
1 stop19h 35mMultiple Airlines
Deal found 3/19$429
This Hawaiian Airlines deal was found by Cheapflights users on 3/18. 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.
Sat 5/244:53 pmDTW - ONT
1 stop8h 53mHawaiian Airlines
Thu 5/294:45 pmONT - DTW
1 stop9h 29mHawaiian Airlines
Deal found 3/18$436

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 March 20, 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

Thu 4/10

2:42 pm-9:22 am

1 stop21h 40m

Ontario

Wed 4/16

3:17 pm-1:52 pm

1 stop19h 35m

$264

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 4/15

8:10 pm-11:41 pm

1 stop6h 31m

Ontario

Tue 4/22

7:00 am-4:45 pm

1 stop6h 45m

$353

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 4/10

7:37 pm-11:50 pm

1 stop7h 13m

Ontario

Wed 4/16

10:54 am-8:16 pm

1 stop6h 22m

$354

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 4/11

5:10 pm-11:59 pm

1 stop9h 49m

Ontario

Thu 4/24

6:24 pm-5:11 am

1 stop7h 47m

$377

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 4/22

11:05 am-8:42 pm

2 stops12h 37m

Ontario

Fri 4/25

6:39 pm-6:20 am

1 stop8h 41m

$383

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 3/26

5:20 am-1:43 pm

1 stop11h 23m

Ontario

Wed 4/2

3:17 pm-1:52 pm

1 stop19h 35m

$429

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 5/24

4:53 pm-10:46 pm

1 stop8h 53m

Ontario

Thu 5/29

4:45 pm-5:14 am

1 stop9h 29m

$436

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 5/17

12:15 pm-9:00 pm

2 stops11h 45m

Ontario

Sat 6/7

5:10 am-6:05 pm

2 stops9h 55m

$442

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 4/14

10:44 am-5:03 pm

1 stop9h 19m

$135

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 4/23

5:20 am-1:37 pm

1 stop11h 17m

$152

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 16 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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Metropolitan Wayne County Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit Metropolitan Wayne County Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Detroit Metropolitan Wayne County Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Detroit Metropolitan Wayne County Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub 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 Metropolitan Wayne County Airport-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 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 March 14, 2025.

The best time to book flights from Detroit Metropolitan Wayne County Airport to Ontario is 33 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 $324). 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 March 20, 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 March 20, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Detroit to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,283 reviews

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,283 reviews
Southwest
8.1
Very good
4,283 reviews

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,753 reviews
Southwest
8.1
Very good
4,283 reviews

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,283 reviews

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,325 reviews
Southwest
8.1
Very good
4,283 reviews

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,609 reviews
Southwest
8.1
Very good
4,283 reviews

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 $332. Other airlines that can offer you cheap pricing are Delta, from $353, and American Airlines, from $358. Users have found that Frontier is 16% 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 $135. Hawaiian Airlines flights start at $173 while deals on American Airlines start at $182 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 $324). 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 Burbank flights
Detroit to Santa Ana flights
Detroit to Sacramento flights
Detroit to San Jose flights
Detroit to Oakland flights
Detroit to Reno flights
Detroit to Fresno flights
Detroit to Palm Springs flights
Detroit to Long Beach flights
Detroit to Monterey flights
Detroit to Santa Barbara flights
Detroit to Medford flights
Detroit to San Luis Obispo flights
Detroit to Santa Rosa flights
Detroit to Yuma flights
Detroit to Arcata flights
Detroit to Redding flights
Detroit to Bakersfield flights
Detroit to Tijuana flights
Detroit to Merced flights
Detroit to Mammoth Lakes 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 March 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$218FlexibilityNo cancel feeOn-time65%
FrontierCheapest$148Average$239FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$336Average$481FlexibilityNo cancel feeOn-time71%
DeltaCheapest$352Average$445FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$400Average$489FlexibilityNo 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.