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$100+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ONT
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
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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 June 16, 2025.

Round-trip from

$210
(CheapOair)

One-way from

$100
(Frontier)

Popular in

August

Cheapest in

September

Average price

$358
From Detroit (DTT) to Ontario
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One-way flight from Detroit (DTT) to Ontario
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High demand for flights, 7% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 16, 2025.

This CheapOair deal was found by Cheapflights users on 6/14. 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.
Mon 6/236:00 amDTW - ONT
1 stop20h 50mFrontier
Thu 6/265:21 pmONT - DTW
1 stop28h 23mFrontier
Deal found 6/14$210
This Hawaiian Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 9/96:30 amDTW - ONT
1 stop10h 39mHawaiian Airlines
Wed 9/173:04 pmONT - DTW
1 stop11h 01mHawaiian Airlines
Deal found 6/14$276
This Delta deal was found by Cheapflights users on 6/16. 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 8/125:25 amDTW - ONT
1 stop8h 10mDelta
Mon 8/181:15 pmONT - DTW
1 stop7h 44mDelta
Deal found 6/16$277
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 9/1011:30 amDTW - ONT
2 stops9h 41mAmerican Airlines
Wed 9/176:10 amONT - DTW
1 stop8h 03mAmerican Airlines
Deal found 6/15$282
This Southwest deal was found by Cheapflights users on 6/15. 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.
Tue 7/295:35 pmDTW - ONT
1 stop8h 35mSouthwest
Mon 8/44:10 pmONT - DTW
1 stop5h 55mSouthwest
Deal found 6/15$347
This Orbitz deal was found by Cheapflights users on 6/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/17:00 amDTW - ONT
1 stop9h 26mMultiple Airlines
Thu 7/312:59 amONT - DTW
1 stop6h 52mMultiple Airlines
Deal found 6/15$354
This JetBlue deal was found by Cheapflights users on 6/14. 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.
Wed 9/1012:16 pmDTW - ONT
1 stop12h 13mJetBlue
Mon 9/1510:56 pmONT - DTW
1 stop9h 34mJetBlue
Deal found 6/14$359
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Mon 8/116:15 pmDTW - ONT
1 stop6h 51mUnited Airlines
Tue 8/191:15 pmONT - DTW
1 stop6h 00mUnited Airlines
Deal found 6/16$367
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 9/94:51 pmDTW - ONT
2 stops19h 35mAlaska Airlines
Wed 9/173:04 pmONT - DTW
1 stop11h 01mAlaska Airlines
Deal found 6/14$406

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 June 16, 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

Mon 6/23

6:00 am-11:50 pm

1 stop20h 50m

Ontario

Thu 6/26

5:21 pm-12:44 am

1 stop28h 23m

$210

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 9/9

6:30 am-2:09 pm

1 stop10h 39m

Ontario

Wed 9/17

3:04 pm-5:05 am

1 stop11h 01m

$276

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 8/12

5:25 am-10:35 am

1 stop8h 10m

Ontario

Mon 8/18

1:15 pm-11:59 pm

1 stop7h 44m

$277

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 9/10

11:30 am-6:11 pm

2 stops9h 41m

Ontario

Wed 9/17

6:10 am-5:13 pm

1 stop8h 03m

$282

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 7/29

5:35 pm-11:10 pm

1 stop8h 35m

Ontario

Mon 8/4

4:10 pm-1:05 am

1 stop5h 55m

$347

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 7/1

7:00 am-1:26 pm

1 stop9h 26m

Ontario

Thu 7/3

12:59 am-10:51 am

1 stop6h 52m

$354

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 9/10

12:16 pm-9:29 pm

1 stop12h 13m

Ontario

Mon 9/15

10:56 pm-11:30 am

1 stop9h 34m

$359

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 8/11

6:15 pm-10:06 pm

1 stop6h 51m

Ontario

Tue 8/19

1:15 pm-10:15 pm

1 stop6h 00m

$367

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Tue 9/9

4:51 pm-9:26 am

2 stops19h 35m

Ontario

Wed 9/17

3:04 pm-5:05 am

1 stop11h 01m

$406

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 7/14

6:00 am-9:13 am

1 stop6h 13m

$100

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 17 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 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 June 16, 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 June 16, 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
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.1

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

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.1

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
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.1

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
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.1

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
2,500 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.1

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
8,801 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.1

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 to Ontario round-trip?

    Cheapflights users have booked flights from Detroit to Ontario round-trip from $210. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $276, and Delta, from $277. Users have found that Frontier is 44% 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 $100. However, be on the lookout for offers from Hawaiian Airlines and United Airlines, 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

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Alternative routes for Detroit to Ontario

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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 June 16, 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%

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