Which layover airport offers the lowest fares from Ontario to Detroit?

Flights via Denver (DEN) offer the lowest average round-trip price of $277.

What is the cheapest airline that flies from Ontario to Detroit?

Frontier is the most popular carrier operating from Ontario to Detroit

Which layover airport has the shortest travel time from Ontario to Detroit?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 35m.

Which layover airport has the shortest connection time from Ontario to Detroit?

Chicago (ORD) has the shortest average layover time for this route: 1h 50m.

What airlines fly to Detroit?

Spirit Airlines, Delta and Frontier are the top three most popular airlines that fly to Detroit from Ontario according to our data. Spirit Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Detroit. Keep in mind that there are 6 different airlines that fly to Detroit on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Ontario and Detroit?

Denver (DEN) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

When did momondo last update prices for flights from Ontario Airport to Detroit?

Prices for flights from Ontario Airport to Detroit were last updated today.

How many operators does momondo search for flights from Ontario Airport to Detroit?

The number of operators available for flights from Ontario Airport to Detroit is 6 as of January 2026.

How old do you have to be to fly from Ontario Airport to Detroit?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Detroit.

What documentation or ID do you need to fly to Detroit?

The required travel and health documents for your Detroit trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Detroit. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$65 Cheap Flights from Ontario to Detroit in 2026

Q: What is the typical price of a round-trip flight between Ontario and Detroit?

Prices are currently low for flights on this route. Typical prices usually range from $471 to $688. The lowest price recently found on this route was $148.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Detroit

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 am - 11:40 pm

ONT

DTW

12h 00m

1 stop

8:30 am - 9:34 am

DTW

ONT

28h 04m

1 stop

$148Frontier

Wed, Feb 25 - Wed, Mar 4

7:30 am - 11:40 pm

ONT

DTW

13h 10m

1 stop

8:30 am - 9:34 am

DTW

ONT

28h 04m

1 stop

$160Frontier

Wed, Feb 18 - Wed, Feb 25

2:08 pm - 11:55 pm

ONT

DTW

6h 47m

1 stop

8:30 am - 9:34 pm

DTW

ONT

16h 04m

1 stop

$164Frontier

Thu, Feb 26 - Wed, Mar 4

6:05 am - 11:04 am

ONT

DTW

25h 59m

1 stop

8:30 am - 9:34 am

DTW

ONT

28h 04m

1 stop

$165Frontier

Thu, Feb 12 - Wed, Feb 18

10:18 pm - 4:30 am

ONT

DTW

27h 12m

1 stop

11:54 am - 11:59 pm

DTW

ONT

15h 05m

1 stop

$168Multiple Airlines

Sun, Feb 22 - Sat, Mar 7

6:20 am - 3:27 pm

ONT

DTW

6h 07m

1 stop

7:45 am - 11:39 am

DTW

ONT

6h 54m

1 stop

$180Frontier

Tue, Apr 7 - Sat, Apr 11

6:15 am - 10:59 am

ONT

DTW

25h 44m

1 stop

10:27 pm - 11:59 pm

DTW

ONT

28h 32m

1 stop

$181Frontier

Tue, Mar 17 - Mon, Mar 23

8:40 am - 11:55 pm

ONT

DTW

12h 15m

1 stop

11:54 am - 11:59 pm

DTW

ONT

15h 05m

1 stop

$183Frontier

Tue, Mar 3 - Mon, Mar 9

8:10 am - 11:55 pm

ONT

DTW

12h 45m

1 stop

5:21 pm - 7:59 am

DTW

ONT

17h 38m

1 stop

$185Frontier

Wed, Feb 11 - Sat, Feb 14

6:00 am - 11:55 pm

ONT

DTW

14h 55m

1 stop

5:21 pm - 11:59 pm

DTW

ONT

9h 38m

1 stop

$191Frontier

Sat, Feb 14 - Sat, Feb 21

Frontier flights from Ontario to Detroit

Our best Frontier deals on Ontario to Detroit flight tickets

Frontier

Feb 25

ONT8:40 amOntario

12h 00m

1 stop

DTW11:40 pmDetroit Metropolitan Wayne County

Mar 4

DTW8:30 amDetroit Metropolitan Wayne County

28h 04m

1 stop

ONT9:34 amOntario

$148

Frontier

Feb 18

ONT7:30 amOntario

13h 10m

1 stop

DTW11:40 pmDetroit Metropolitan Wayne County

Feb 25

DTW8:30 amDetroit Metropolitan Wayne County

28h 04m

1 stop

ONT9:34 amOntario

$160

Frontier

Feb 26

ONT2:08 pmOntario

6h 47m

1 stop

DTW11:55 pmDetroit Metropolitan Wayne County

Mar 4

DTW8:30 amDetroit Metropolitan Wayne County

16h 04m

1 stop

ONT9:34 pmOntario

$164

United Airlines flights from Ontario to Detroit

Our best United Airlines deals on Ontario to Detroit flight tickets

United Airlines

Feb 6

ONT6:39 pmOntario

12h 31m

2 stops

DTW10:10 amDetroit Metropolitan Wayne County

Feb 10

DTW7:15 amDetroit Metropolitan Wayne County

8h 32m

2 stops

ONT12:47 pmOntario

$636

United Airlines

Feb 5

ONT6:39 pmOntario

12h 31m

2 stops

DTW10:10 amDetroit Metropolitan Wayne County

Feb 9

DTW4:45 pmDetroit Metropolitan Wayne County

23h 02m

1 stop

ONT12:47 pmOntario

$709

United Airlines

Feb 7

ONT1:24 pmOntario

6h 06m

1 stop

DTW10:30 pmDetroit Metropolitan Wayne County

Feb 8

DTW4:45 pmDetroit Metropolitan Wayne County

7h 13m

1 stop

ONT8:58 pmOntario

$715

Fly from

Fly to

Route

Depart

Return

Price

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 2/25

8:40 am-11:40 pm

1 stop12h 00m

Detroit Metropolitan Wayne County

Wed 3/4

8:30 am-9:34 am

1 stop28h 04m

$148

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 2/18

7:30 am-11:40 pm

1 stop13h 10m

Detroit Metropolitan Wayne County

Wed 2/25

8:30 am-9:34 am

1 stop28h 04m

$160

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 2/26

2:08 pm-11:55 pm

1 stop6h 47m

Detroit Metropolitan Wayne County

Wed 3/4

8:30 am-9:34 pm

1 stop16h 04m

$164

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 2/12

6:05 am-11:04 am

1 stop25h 59m

Detroit Metropolitan Wayne County

Wed 2/18

8:30 am-9:34 am

1 stop28h 04m

$165

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sun 2/22

10:18 pm-4:30 am

1 stop27h 12m

Detroit Metropolitan Wayne County

Sat 3/7

11:54 am-11:59 pm

1 stop15h 05m

$168

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 4/7

6:20 am-3:27 pm

1 stop6h 07m

Detroit Metropolitan Wayne County

Sat 4/11

7:45 am-11:39 am

1 stop6h 54m

$180

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 3/17

6:15 am-10:59 am

1 stop25h 44m

Detroit Metropolitan Wayne County

Mon 3/23

10:27 pm-11:59 pm

1 stop28h 32m

$181

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 3/3

8:40 am-11:55 pm

1 stop12h 15m

Detroit Metropolitan Wayne County

Mon 3/9

11:54 am-11:59 pm

1 stop15h 05m

$183

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 2/11

8:10 am-11:55 pm

1 stop12h 45m

Detroit Metropolitan Wayne County

Sat 2/14

5:21 pm-7:59 am

1 stop17h 38m

$185

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sat 2/14

6:00 am-11:55 pm

1 stop14h 55m

Detroit Metropolitan Wayne County

Sat 2/21

5:21 pm-11:59 pm

1 stop9h 38m

$191

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Detroit

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Ontario and Detroit?

What is the cheapest month to fly to Detroit?

The cheapest month to fly to Detroit from Ontario is in September. Flight prices, which tend to average around $241, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in September, then March is your next best option. Flight prices from Ontario to Detroit during March average around $352.

What is the cheapest day to depart on your flight to Detroit?

On average, the least expensive day to fly to Detroit from Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $345. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Detroit for around $413.

What is the cheapest time of day to depart on your flight to Detroit?

At noon is the cheapest time of day to fly from Ontario to Detroit when you can find flight prices for as low as $338. Flying to Detroit at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $389 on average. Flights to Detroit from Ontario in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Detroit from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Detroit for around $399 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Detroit from Ontario for as low as $334 on momondo.

How have Ontario to Detroit flight prices changed over time?

As of January 2026, prices for Ontario to Detroit flights are approximately 61% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Detroit

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Detroit according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Detroit (ONT to DTT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Detroit

Fastest flight time	6h 07m
Direct flights	None

The fastest flight from Ontario to Detroit takes 6h 07m

There are no direct flights from Ontario to Detroit. There are no popular flight routes from Ontario to Detroit.

Search flight deals

How far is Ontario to Detroit by plane?
A flight from Ontario to Detroit will travel around 1947.2 mi. 6h 07m is a normal flight duration for this route.
When did momondo last update prices for flights from Ontario Airport to Detroit?
Prices for flights from Ontario Airport to Detroit were last updated today.
How many operators does momondo search for flights from Ontario Airport to Detroit?
The number of operators available for flights from Ontario Airport to Detroit is 6 as of January 2026.
How old do you have to be to fly from Ontario Airport to Detroit?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Detroit.
What documentation or ID do you need to fly to Detroit?
The required travel and health documents for your Detroit trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Detroit. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Ontario to Detroit?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Detroit is American Airlines (35% of total bookings). The next most popular airlines are Southwest (23%), Delta (16%), and Frontier (13%).

Best airlines flying from Ontario to Detroit

Compare and see reviews for airlines that fly from Ontario to Detroit with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $128	Free Cancellation	Rating 6.3 8,373 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $180	Free Cancellation	Rating 5.7 3,058 reviews	Search Frontier flights
American Airlines	PriceFrom $272	Free Cancellation	Rating 7.2 11,193 reviews	Search American Airlines flights
Delta	PriceFrom $292	Free Cancellation	Rating 7.9 8,112 reviews	Search Delta flights
United Airlines	PriceFrom $321	Free Cancellation	Rating 7.4 9,194 reviews	Search United Airlines flights
Southwest	PriceFrom $352	Free Cancellation	Rating 8.0 4,268 reviews	Search Southwest flights

Port Huron

Roseville

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Detroit?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Detroit. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Detroit with flexible booking policies on momondo?

Flights from Ontario to Detroit with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Detroit?

Once you have performed a search for Ontario to Detroit flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Detroit right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Detroit, momondo offers a useful price alert feature which will track prices for flights to Detroit from Ontario and alert you when they change.