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

Flying on Frontier is currently your cheapest option to Detroit, with prices starting at $150. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $353 and $358, respectively. These flights start at 64% lower than the current average price 3 months from now.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $65. Delta flights start at $177 while deals on Alaska Airlines start at $197 one-way.

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

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

What are the most popular airlines that fly from Ontario to Detroit?

Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from Ontario to Detroit.

What is the cheapest day to fly round-trip from Ontario to Detroit?

Users have found that flying from Ontario to Detroit on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Ontario to Detroit?

Users have found that booking a flight from Ontario to Detroit at least 57 days early can save you up to 87% on average compared to booking a flight this week. If booking 57 days before your flight isn’t an option for you, users have found flights from Ontario to Detroit for as little as $236 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $408 for flights departing within the next 3 days.

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

January is one of the best times of the year to fly to Detroit from Ontario. Prices for January average $335 per person but you can even find prices for as low as $139. The most expensive prices can be found in the month of July. Opting for a January flight can save you 18% on your journey compared to booking in July

Most accurate provider : When it comes to deals on Ontario-Detroit flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Detroit flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Detroit flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Detroit 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 Ontario-Detroit flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Ontario to Detroit that include hotel bookings?

Yes. In addition to deals on Ontario to Detroit flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Detroit?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Detroit.

Can I find deals for business class flights from Ontario to Detroit?

Yes. Cheapflights offers flight deals from Ontario to Detroit by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$65+ Flights from Ontario to Detroit

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Cheap flight deals from Ontario to Detroit

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$150 (Frontier)
One-way from	$65 (Frontier)
Popular in	January
Cheapest in	July
Average price	$418

Provider with most accurate pricing for Ontario-Detroit (DTT) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Detroit (DTT) flights.

Search Deals

From Ontario to Detroit (DTT)

Search Deals

One-way flight from Ontario to Detroit (DTT)

Search Deals

Highest demand for flights based on searches. 19% potential increase in price ($101 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from Ontario to Detroit

Cheapest flights from Ontario to Detroit
Explore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 19, 2025.

mié. 3/512:59 amONT - DTW

1 stop9h 54mFrontier

mar. 3/112:43 pmDTW - ONT

1 stop12h 21mFrontier

Deal found 2/18

$150

jue. 5/11:20 pmONT - DTW

1 stop6h 29mDelta

mié. 5/712:25 pmDTW - ONT

1 stop10h 17mDelta

Deal found 2/19

$353

jue. 5/112:50 pmONT - DTW

1 stop7h 12mAmerican Airlines

mié. 5/75:30 amDTW - ONT

2 stops9h 22mAmerican Airlines

Deal found 2/19

$358

mar. 3/185:05 amONT - DTW

2 stops8h 46mUnited Airlines

mar. 3/2511:10 amDTW - ONT

2 stops12h 47mUnited Airlines

Deal found 2/17

$363

vie. 3/1411:57 amONT - DTW

1 stop24h 56mAlaska Airlines

mié. 4/307:00 amDTW - ONT

1 stop11h 32mAlaska Airlines

Deal found 2/18

$392

dom. 3/95:39 pmONT - DTW

1 stop13h 06mMultiple Airlines

sáb. 3/154:49 pmDTW - ONT

2 stops10h 09mMultiple Airlines

Deal found 2/18

$425

mié. 5/74:29 pmONT - DTW

1 stop9h 42mHawaiian Airlines

jue. 5/154:53 pmDTW - ONT

1 stop8h 53mHawaiian Airlines

Deal found 2/18

$438

sáb. 3/225:30 amONT - DTW

2 stops9h 00mSouthwest

mié. 3/261:00 pmDTW - ONT

2 stops10h 15mSouthwest

Deal found 2/18

$513

Best flights from Ontario to Detroit
Discover carefully curated flight deals from Ontario to Detroit that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated febrero 19, 2025.

mié. 3/512:59 amONT - DTW

1 stop9h 54mFrontier

mar. 3/112:43 pmDTW - ONT

1 stop12h 21mFrontier

Deal found 2/18

$150

jue. 5/11:20 pmONT - DTW

1 stop6h 29mDelta

mié. 5/712:25 pmDTW - ONT

1 stop10h 17mDelta

Deal found 2/19

$353

jue. 5/112:50 pmONT - DTW

1 stop7h 12mAmerican Airlines

mié. 5/75:30 amDTW - ONT

2 stops9h 22mAmerican Airlines

Deal found 2/19

$358

mar. 3/185:05 amONT - DTW

2 stops8h 46mUnited Airlines

mar. 3/2511:10 amDTW - ONT

2 stops12h 47mUnited Airlines

Deal found 2/17

$363

vie. 3/1411:57 amONT - DTW

1 stop24h 56mAlaska Airlines

mié. 4/307:00 amDTW - ONT

1 stop11h 32mAlaska Airlines

Deal found 2/18

$392

dom. 3/95:39 pmONT - DTW

1 stop13h 06mMultiple Airlines

sáb. 3/154:49 pmDTW - ONT

2 stops10h 09mMultiple Airlines

Deal found 2/18

$425

mié. 5/74:29 pmONT - DTW

1 stop9h 42mHawaiian Airlines

jue. 5/154:53 pmDTW - ONT

1 stop8h 53mHawaiian Airlines

Deal found 2/18

$438

sáb. 3/225:30 amONT - DTW

2 stops9h 00mSouthwest

mié. 3/261:00 pmDTW - ONT

2 stops10h 15mSouthwest

Deal found 2/18

$513

Last-minute flights from Ontario to Detroit
Discover last-minute flight deals from Ontario to Detroit. Data last updated febrero 19, 2025 and is based on user searches.

lun. 2/241:44 pmONT - DTW

1 stop22h 22mUnited Airlines

mié. 2/268:36 amDTW - ONT

1 stop15h 16mUnited Airlines

Deal found 2/17

$603

vie. 2/2812:59 amONT - DTW

1 stop10h 36mFrontier

jue. 3/62:43 pmDTW - ONT

1 stop12h 26mFrontier

Deal found 2/17

$190

vie. 2/285:44 pmONT - DTW

2 stops19h 09mAlaska Airlines

sáb. 3/225:10 pmDTW - ONT

1 stop9h 49mAlaska Airlines

Deal found 2/17

$755

sáb. 3/16:59 amONT - DTW

1 stop6h 41mAmerican Airlines

mar. 3/47:30 amDTW - ONT

1 stop7h 37mAmerican Airlines

Deal found 2/18

$864

mié. 3/512:59 amONT - DTW

1 stop9h 54mFrontier

mar. 3/112:43 pmDTW - ONT

1 stop12h 21mFrontier

Deal found 2/18

$150

dom. 3/95:39 pmONT - DTW

1 stop13h 06mMultiple Airlines

sáb. 3/154:49 pmDTW - ONT

2 stops10h 09mMultiple Airlines

Deal found 2/18

$425

vie. 3/1411:57 amONT - DTW

1 stop24h 56mAlaska Airlines

mié. 4/307:00 amDTW - ONT

1 stop11h 32mAlaska Airlines

Deal found 2/18

$392

mar. 3/185:05 amONT - DTW

1 stop6h 47mUnited Airlines

mar. 3/254:35 pmDTW - ONT

1 stop7h 22mUnited Airlines

Deal found 2/17

$353

mar. 3/1812:46 pmONT - DTW

1 stop6h 37mDelta

mié. 3/266:14 pmDTW - ONT

1 stop7h 29mDelta

Deal found 2/18

$417

sáb. 3/226:10 amONT - DTW

1 stop7h 06mAmerican Airlines

sáb. 3/295:50 pmDTW - ONT

1 stop7h 10mAmerican Airlines

Deal found 2/18

$447

sáb. 3/225:30 amONT - DTW

2 stops9h 00mSouthwest

mié. 3/261:00 pmDTW - ONT

2 stops10h 15mSouthwest

Deal found 2/18

$513

One-way flights from Ontario to Detroit
Search for one-way flight options from Ontario to Detroit. Find affordable one-way fares based on user searches. Data last updated febrero 19, 2025.

mié. 5/712:59 amONT - DTW

1 stop8h 46mFrontier

Deal found 2/18

$65

mar. 4/151:20 pmONT - DTW

1 stop6h 29mDelta

Deal found 2/18

$177

mar. 3/116:00 amONT - DTW

1 stop30h 53mAlaska Airlines

Deal found 2/17

$197

sáb. 5/104:29 pmONT - DTW

1 stop9h 42mHawaiian Airlines

Deal found 2/18

$218

sáb. 3/156:00 amONT - DTW

1 stop9h 19mAmerican Airlines

Deal found 2/18

$224

jue. 5/15:45 amONT - DTW

2 stops8h 25mSouthwest

Deal found 2/17

$225

mar. 3/115:05 amONT - DTW

2 stops10h 53mUnited Airlines

Deal found 2/17

$227

Find flights from Ontario to Detroit within your budget

Fly from

Fly to

Route

Depart

Return

Price

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 3/5

12:59 am-1:53 pm

1 stop9h 54m

Detroit Metropolitan Wayne County

mar. 3/11

2:43 pm-12:04 am

1 stop12h 21m

$150

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 5/1

1:20 pm-10:49 pm

1 stop6h 29m

Detroit Metropolitan Wayne County

mié. 5/7

12:25 pm-7:42 pm

1 stop10h 17m

$353

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 5/1

12:50 pm-11:02 pm

1 stop7h 12m

Detroit Metropolitan Wayne County

mié. 5/7

5:30 am-11:52 am

2 stops9h 22m

$358

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mar. 3/18

5:05 am-4:51 pm

2 stops8h 46m

Detroit Metropolitan Wayne County

mar. 3/25

11:10 am-8:57 pm

2 stops12h 47m

$363

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

vie. 3/14

11:57 am-3:53 pm

1 stop24h 56m

Detroit Metropolitan Wayne County

mié. 4/30

7:00 am-3:32 pm

1 stop11h 32m

$392

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

dom. 3/9

5:39 pm-9:45 am

1 stop13h 06m

Detroit Metropolitan Wayne County

sáb. 3/15

4:49 pm-11:58 pm

2 stops10h 09m

$425

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 5/7

4:29 pm-5:11 am

1 stop9h 42m

Detroit Metropolitan Wayne County

jue. 5/15

4:53 pm-10:46 pm

1 stop8h 53m

$438

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

sáb. 3/22

5:30 am-5:30 pm

2 stops9h 00m

Detroit Metropolitan Wayne County

mié. 3/26

1:00 pm-8:15 pm

2 stops10h 15m

$513

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 5/7

12:59 am-12:45 pm

1 stop8h 46m

$65

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mar. 4/15

1:20 pm-10:49 pm

1 stop6h 29m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 15 results

Compare providers for flights from Ontario to Detroit

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Detroit in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
Priceline	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 Ontario-Detroit flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Detroit flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Detroit flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Detroit 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 Ontario-Detroit 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 Ontario to Detroit

Have a flexible travel schedule? Discover the best time to fly to Detroit from Ontario 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.

Travel insights for flights from Ontario to Detroit

Get recent, data-driven insights about flights from Ontario to Detroit including ideal travel times, pricing trends, and more.

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

Currently, April is the cheapest month in which you can book a flight from Ontario to Detroit (average of $257). Flying from Ontario to Detroit in March is currently the most expensive (average of $305). 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 ONT to DTT?

It’s optimal to fly from Ontario to Detroit in the afternoon. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight at noon.

Rainfall in Detroit by month

In terms of precipitation, rainfall in Detroit ranges from 1.8 - 3.1 inches per month. August is typically the wettest month, when rainfall can reach 3.1 in. January is typically the driest time to visit Detroit when rainfall is around 1.8 in.

Temperature in Detroit by month

If weather is an important factor for your trip to Detroit, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

Reviews of airlines servicing Detroit

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Ontario to Detroit to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,413 reviews

Reviews

1 / 20

10.0

Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest

8.1

Very good

4,413 reviews

Southwest

8.1

Very good

4,413 reviews

Reviews

1 / 20

10.0

Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines

8.0

Very good

9,691 reviews

Southwest

8.1

Very good

4,413 reviews

Reviews

1 / 20

10.0

Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta

8.0

Very good

8,236 reviews

Southwest

8.1

Very good

4,413 reviews

Reviews

1 / 20

10.0

Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Hawaiian Airlines

7.9

Good

2,317 reviews

Southwest

8.1

Very good

4,413 reviews

Reviews

1 / 20

10.0

Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines

7.4

Good

8,771 reviews

Southwest

8.1

Very good

4,413 reviews

Reviews

1 / 20

10.0

Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

What are the cheapest airlines flying from Ontario to Detroit round-trip?
Flying on Frontier is currently your cheapest option to Detroit, with prices starting at $150. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $353 and $358, respectively. These flights start at 64% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Ontario to Detroit one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $65. Delta flights start at $177 while deals on Alaska Airlines start at $197 one-way.
Can I find deals for flights from Ontario to Detroit that include hotel bookings?
Yes. In addition to deals on Ontario to Detroit flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Detroit?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Detroit.
Can I find deals for business class flights from Ontario to Detroit?
Yes. Cheapflights offers flight deals from Ontario to Detroit 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 Ontario to Detroit?
Currently, April is the cheapest month in which you can book a flight from Ontario to Detroit (average of $257). Flying from Ontario to Detroit in March is currently the most expensive (average of $305). 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

Roseville

Port Huron

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Ontario to Detroit

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$130	Average$248	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$152	Average$265	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$298	Average$537	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$336	Average$477	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$341	Average$563	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$394	Average$604	FlexibilityNo cancel fee	On-time63%

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$65+ Cheap flights from Ontario to Detroit (ONT - DTT)

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Detroit with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Detroit

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Detroit

Cheapest flights from Ontario to DetroitExplore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 19, 2025.

Explore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 19, 2025.

Find flights from Ontario to Detroit within your budget

Compare providers for flights from Ontario to Detroit

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 Ontario to Detroit in February.

Best time to book a flight from Ontario to Detroit

Have a flexible travel schedule? Discover the best time to fly to Detroit from Ontario with our price prediction graph.

Travel insights for flights from Ontario to Detroit

Get recent, data-driven insights about flights from Ontario to Detroit including ideal travel times, pricing trends, and more.

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

What is the cheapest time of day to fly from ONT to DTT?

Find hourly flight availability from Ontario to Detroit. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 19, 2025.

Rainfall in Detroit by month

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

Temperature in Detroit by month

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

Reviews of airlines servicing Detroit

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Ontario to Detroit to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Detroit. 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 Ontario to Detroit round-trip?

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

Can I find deals for flights from Ontario to Detroit that include hotel bookings?

How can I find direct flights from Ontario to Detroit?

Can I find deals for business class flights from Ontario to Detroit?

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

Traveling to a place near Ontario?

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Alternative routes for Ontario to Detroit

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Top 6 airlines flying from Ontario to Detroit

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Cheapest flights from Ontario to Detroit
Explore the most affordable flight options available from Ontario to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 19, 2025.