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Cheap flights from Detroit to Ontario from C$ 263

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
5 Apr — 12 Apr1
1 adult

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 31 March 2025.

Round-trip from

C$ 442

One-way from

C$ 263

Popular in

June

Cheapest in

September

Average price

C$ 554
Frontier
  • Frontier
  • 6/6-9/6
  • 2 total stops
  • 21h 35m total
  • Detroit to Ontario
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Frontier
  • Frontier
  • 15/5
  • 1 total stop
  • 12h 31m total
  • Detroit to Ontario
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Highest demand for flights based on searches. 7% potential increase in price (C$ 70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 31 March 2025.

Fri 6/611:41 a.m.DTW - ONT
1 stop15h 09mFrontier
Mon 9/66:00 a.m.ONT - DTW
1 stop6h 26mFrontier
Deal found 30/3C$ 442
Tue 22/46:15 p.m.DTW - ONT
2 stops19h 42mDelta
Tue 29/412:07 p.m.ONT - DTW
2 stops16h 47mDelta
Deal found 30/3C$ 517
Wed 23/47:00 a.m.DTW - ONT
1 stop16h 29mAlaska Airlines
Sat 26/44:29 p.m.ONT - DTW
1 stop9h 42mAlaska Airlines
Deal found 31/3C$ 594
Fri 12/912:15 p.m.DTW - ONT
1 stop12h 26mJetBlue
Mon 15/911:00 p.m.ONT - DTW
1 stop9h 30mJetBlue
Deal found 30/3C$ 621
Wed 11/67:00 a.m.DTW - ONT
2 stops8h 25mSouthwest
Sat 14/65:25 a.m.ONT - DTW
2 stops9h 40mSouthwest
Deal found 30/3C$ 623
Fri 9/55:13 p.m.DTW - ONT
1 stop9h 46mHawaiian Airlines
Mon 12/54:29 p.m.ONT - DTW
1 stop9h 42mHawaiian Airlines
Deal found 31/3C$ 646
Thu 28/85:32 p.m.DTW - ONT
1 stop8h 21mUnited Airlines
Mon 1/97:00 a.m.ONT - DTW
1 stop6h 57mUnited Airlines
Deal found 30/3C$ 684

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 629,999 searches. Data last updated 31 March 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

Fri 6/6

11:41 a.m.-11:50 p.m.

1 stop15h 09m

Ontario

Mon 9/6

6:00 a.m.-3:26 p.m.

1 stop6h 26m

C$ 442

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 22/4

6:15 p.m.-10:57 a.m.

2 stops19h 42m

Ontario

Mon 28/4

10:15 p.m.-6:24 p.m.

2 stops17h 09m

C$ 517

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 23/4

7:00 a.m.-8:29 p.m.

1 stop16h 29m

Ontario

Sat 26/4

4:29 p.m.-5:11 a.m.

1 stop9h 42m

C$ 594

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 12/9

12:15 p.m.-9:41 p.m.

1 stop12h 26m

Ontario

Mon 15/9

11:00 p.m.-11:30 a.m.

1 stop9h 30m

C$ 621

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 11/6

7:00 a.m.-12:25 p.m.

2 stops8h 25m

Ontario

Sat 14/6

5:25 a.m.-6:05 p.m.

2 stops9h 40m

C$ 623

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 9/5

5:13 p.m.-11:59 p.m.

1 stop9h 46m

Ontario

Mon 12/5

4:29 p.m.-5:11 a.m.

1 stop9h 42m

C$ 646

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 28/8

5:32 p.m.-10:53 p.m.

1 stop8h 21m

Ontario

Mon 1/9

7:00 a.m.-4:57 p.m.

1 stop6h 57m

C$ 684

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 15/5

2:28 p.m.-11:59 p.m.

1 stop12h 31m

C$ 263

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 20/9

7:10 a.m.-2:06 p.m.

1 stop9h 56m

C$ 276

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 8/7

7:00 a.m.-12:23 p.m.

1 stop8h 23m

C$ 278

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/3

Showing 1-10 of 15 results
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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 to Ontario

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

Currently, September is the cheapest month in which you can book a flight from Detroit to Ontario (average of C$ 290). Flying from Detroit to Ontario in May is currently the most expensive (average of C$ 574). 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 31 March 2025.

One of the essential ways to save on airfare from Detroit to Ontario is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 64% on airfare.

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 3.0 - 86.0 mm per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

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 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

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 31 March 2025.
Read through reviews of airlines operating flights from Detroit to Ontario, such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

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 C$ 442. Other airlines that can offer you cheap pricing are Delta, from C$ 517, and Alaska Airlines, from C$ 594. Frontier is currently priced 21% below the average price you’ll pay for this route.

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

    The cheapest airlines for a one-way flight from Detroit to Ontario are Frontier (C$ 263), Alaska Airlines (C$ 276), and Delta (C$ 278).

  • 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, September is the cheapest month in which you can book a flight from Detroit to Ontario (average of C$ 290). Flying from Detroit to Ontario in May is currently the most expensive (average of C$ 574). 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

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Why should you use Cheapflights to find cheap flight tickets from Detroit to Ontario?

Cheapflights helps you find that perfect flight to Ontario from Detroit by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Detroit to Ontario with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Detroit to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Detroit to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Detroit to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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