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 $130. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and American Airlines, with the lowest prices starting at $402 and $403, respectively. These flights start at 69% 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 $71. Alaska Airlines flights start at $201 while deals on Southwest start at $207 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 94% 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 $241 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 $417 for flights departing within the next 3 days.

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

October is one of the best times of the year to fly to Detroit from Ontario. Prices for October average $343 per person but you can even find prices for as low as $165. The most expensive prices can be found in the month of March. Opting for a October flight can save you 19% on your journey compared to booking in March

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.

$71+ Flights from Ontario to Detroit

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Ontario to Detroit 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.

Cheap flight deals from Ontario to Detroit

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$130 (Frontier)
One-way from	$71 (Frontier)
Popular in	January
Cheapest in	July
Average price	$599

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. 16% potential increase in price ($86 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 January 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 enero 30, 2025.

vie. 2/2812:59 amONT - DTW

1 stop10h 36mFrontier

mié. 3/51:00 pmDTW - ONT

1 stop7h 58mFrontier

Deal found 1/30

$130

sáb. 3/111:57 amONT - DTW

1 stop24h 56mAlaska Airlines

lun. 3/104:49 pmDTW - ONT

1 stop9h 35mAlaska Airlines

Deal found 1/30

$402

jue. 3/62:54 pmONT - DTW

1 stop6h 58mAmerican Airlines

mié. 3/125:50 pmDTW - ONT

1 stop7h 10mAmerican Airlines

Deal found 1/30

$403

mié. 5/78:55 amONT - DTW

2 stops8h 45mSouthwest

lun. 5/126:40 amDTW - ONT

2 stops8h 55mSouthwest

Deal found 1/30

$413

lun. 3/37:40 pmONT - DTW

2 stops11h 35mUnited Airlines

mar. 3/1111:10 amDTW - ONT

2 stops9h 54mUnited Airlines

Deal found 1/30

$420

jue. 3/131:30 pmONT - DTW

1 stop6h 47mDelta

dom. 3/238:11 pmDTW - ONT

1 stop6h 45mDelta

Deal found 1/30

$470

dom. 2/96:00 amONT - DTW

2 stops14h 07mMultiple Airlines

vie. 2/1412:00 pmDTW - ONT

1 stop9h 58mMultiple Airlines

Deal found 1/30

$587

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 enero 30, 2025.

vie. 2/2812:59 amONT - DTW

1 stop10h 36mFrontier

mar. 3/112:43 pmDTW - ONT

1 stop12h 21mFrontier

Deal found 1/30

$130

sáb. 3/111:57 amONT - DTW

1 stop24h 56mAlaska Airlines

lun. 3/104:49 pmDTW - ONT

1 stop9h 35mAlaska Airlines

Deal found 1/30

$402

jue. 3/62:54 pmONT - DTW

1 stop6h 58mAmerican Airlines

mié. 3/125:50 pmDTW - ONT

1 stop7h 10mAmerican Airlines

Deal found 1/30

$403

mié. 5/78:55 amONT - DTW

2 stops8h 45mSouthwest

lun. 5/126:40 amDTW - ONT

2 stops8h 55mSouthwest

Deal found 1/30

$413

lun. 3/37:40 pmONT - DTW

2 stops11h 35mUnited Airlines

mar. 3/114:32 pmDTW - ONT

1 stop8h 27mUnited Airlines

Deal found 1/30

$415

jue. 3/131:30 pmONT - DTW

1 stop6h 47mDelta

dom. 3/238:11 pmDTW - ONT

1 stop6h 45mDelta

Deal found 1/30

$470

dom. 2/96:00 amONT - DTW

2 stops14h 07mMultiple Airlines

vie. 2/1412:00 pmDTW - ONT

1 stop9h 58mMultiple Airlines

Deal found 1/30

$587

Last-minute flights from Ontario to Detroit
Discover last-minute flight deals from Ontario to Detroit. Data last updated enero 30, 2025 and is based on user searches.

sáb. 2/11:21 pmONT - DTW

1 stop7h 00mDelta

mar. 2/184:25 pmDTW - ONT

1 stop9h 27mDelta

Deal found 1/30

$698

sáb. 2/16:20 amONT - DTW

1 stop10h 55mSouthwest

dom. 2/166:50 amDTW - ONT

1 stop7h 40mSouthwest

Deal found 1/30

$732

vie. 2/710:40 amONT - DTW

1 stop6h 34mFrontier

sáb. 2/222:28 pmDTW - ONT

1 stop7h 41mFrontier

Deal found 1/29

$214

sáb. 2/85:10 amONT - DTW

1 stop14h 05mUnited Airlines

mar. 2/1111:15 amDTW - ONT

2 stops12h 36mUnited Airlines

Deal found 1/29

$608

dom. 2/96:00 amONT - DTW

2 stops14h 07mMultiple Airlines

vie. 2/1412:00 pmDTW - ONT

1 stop9h 58mMultiple Airlines

Deal found 1/30

$587

dom. 2/97:30 pmONT - DTW

2 stops10h 46mAmerican Airlines

vie. 2/142:40 pmDTW - ONT

2 stops10h 24mAmerican Airlines

Deal found 1/30

$797

dom. 2/96:39 pmONT - DTW

2 stops18h 05mAlaska Airlines

vie. 2/284:49 pmDTW - ONT

1 stop9h 35mAlaska Airlines

Deal found 1/30

$928

mié. 2/126:10 amONT - DTW

1 stop13h 21mAmerican Airlines

vie. 2/215:55 pmDTW - ONT

1 stop7h 09mAmerican Airlines

Deal found 1/30

$494

mié. 2/125:10 amONT - DTW

1 stop14h 05mUnited Airlines

mié. 2/194:37 pmDTW - ONT

1 stop8h 22mUnited Airlines

Deal found 1/30

$578

mié. 2/1911:45 amONT - DTW

2 stops25h 08mAlaska Airlines

dom. 2/234:49 pmDTW - ONT

1 stop9h 35mAlaska Airlines

Deal found 1/30

$568

vie. 2/2812:59 amONT - DTW

1 stop10h 36mFrontier

mié. 3/51:00 pmDTW - ONT

1 stop7h 58mFrontier

Deal found 1/30

$130

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 enero 30, 2025.

jue. 2/207:58 pmONT - DTW

1 stop12h 02mFrontier

Deal found 1/30

$71

mié. 5/144:29 pmONT - DTW

1 stop9h 42mAlaska Airlines

Deal found 1/30

$201

mié. 5/148:55 amONT - DTW

2 stops8h 45mSouthwest

Deal found 1/30

$207

mié. 3/55:05 amONT - DTW

1 stop7h 01mUnited Airlines

Deal found 1/29

$247

dom. 7/275:05 pmONT - DTW

1 stop9h 10mDelta

Deal found 1/29

$269

vie. 2/1410:05 amONT - DTW

2 stops8h 05mAmerican Airlines

Deal found 1/30

$306

Find flights from Ontario to Detroit within your budget

Fly from

Fly to

Route

Depart

Return

Price

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

vie. 2/28

12:59 am-2:35 pm

1 stop10h 36m

Detroit Metropolitan Wayne County

mié. 3/5

1:00 pm-5:58 pm

1 stop7h 58m

$130

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

sáb. 3/1

11:57 am-3:53 pm

1 stop24h 56m

Detroit Metropolitan Wayne County

lun. 3/10

4:49 pm-11:24 pm

1 stop9h 35m

$402

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 3/6

2:54 pm-12:52 am

1 stop6h 58m

Detroit Metropolitan Wayne County

mié. 3/12

5:50 pm-10:00 pm

1 stop7h 10m

$403

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 5/7

8:55 am-8:40 pm

2 stops8h 45m

Detroit Metropolitan Wayne County

lun. 5/12

6:40 am-12:35 pm

2 stops8h 55m

$413

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

lun. 3/3

7:40 pm-10:15 am

2 stops11h 35m

Detroit Metropolitan Wayne County

mar. 3/11

4:32 pm-9:59 pm

1 stop8h 27m

$415

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 3/13

1:30 pm-11:17 pm

1 stop6h 47m

Detroit Metropolitan Wayne County

dom. 3/23

8:11 pm-11:56 pm

1 stop6h 45m

$470

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

dom. 2/9

6:00 am-11:07 pm

2 stops14h 07m

Detroit Metropolitan Wayne County

vie. 2/14

12:00 pm-6:58 pm

1 stop9h 58m

$587

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

jue. 2/20

7:58 pm-11:00 am

1 stop12h 02m

$71

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 5/14

4:29 pm-5:11 am

1 stop9h 42m

$201

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

mié. 5/14

8:55 am-8:40 pm

2 stops8h 45m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 13 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 January.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
Priceline	Price Accuracy1 star	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

4,585 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

4,585 reviews

Southwest

8.1

Very good

4,585 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

9,686 reviews

Southwest

8.1

Very good

4,585 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

8,450 reviews

Southwest

8.1

Very good

4,585 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

8,906 reviews

Southwest

8.1

Very good

4,585 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

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,585 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 $130. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and American Airlines, with the lowest prices starting at $402 and $403, respectively. These flights start at 69% 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 $71. Alaska Airlines flights start at $201 while deals on Southwest start at $207 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$126	Average$245	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$152	Average$281	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$297	Average$531	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$336	Average$480	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$341	Average$536	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$394	Average$604	FlexibilityNo cancel fee	On-time63%

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.

$71+ 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 2/20. 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

1. Tell us where you want to go

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 enero 30, 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 enero 30, 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 January.

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 enero 30, 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?

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 Ontario to Detroit

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Ontario to Detroit

100% Free

Book with Flexibility

Travel Smart

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 enero 30, 2025.