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

Frontier, Alaska Airlines, and JetBlue are the most popular carriers operating from Ontario to Detroit

What airlines fly to Detroit?

Spirit Airlines, Delta and American Airlines 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 50% 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.

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 5 as of August 2025.

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.

$78 Cheap Flights from Ontario to Detroit in 2025

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 $286 to $484. The lowest price recently found on this route was $147.

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Find the cheapest flights from Ontario to Detroit

Round-trip

One-way

Last minute

Cheap round-trip flights

8:59 pm - 11:04 amONT-DTW

11h 05m1 stop

6:10 am - 7:54 pmDTW-ONT

16h 44m1 stop

$147Frontier

Find Deal

Sat, Sep 20 - Fri, Sep 26

12:59 am - 12:46 amONT-DTW

20h 47m1 stop

6:10 am - 7:23 amDTW-ONT

28h 13m1 stop

$148Frontier

Find Deal

Wed, Sep 3 - Sun, Sep 7

8:59 pm - 12:46 amONT-DTW

24h 47m1 stop

8:00 am - 7:54 pmDTW-ONT

14h 54m1 stop

$149Frontier

Find Deal

Sun, Sep 7 - Tue, Sep 9

12:59 am - 5:39 pmONT-DTW

13h 40m1 stop

6:10 am - 7:23 amDTW-ONT

28h 13m1 stop

$172Frontier

Find Deal

Tue, Sep 2 - Sun, Sep 7

10:05 am - 11:49 pmONT-DTW

10h 44m1 stop

7:55 am - 11:50 pmDTW-ONT

18h 55m1 stop

$228

Find Deal

Thu, Oct 23 - Sat, Oct 25

9:16 am - 5:26 amONT-DTW

17h 10m1 stop

9:19 pm - 11:33 amDTW-ONT

41h 14m2 stops

$234

Find Deal

Thu, Sep 11 - Tue, Sep 16

1:00 pm - 12:03 amONT-DTW

8h 03m1 stop

6:00 pm - 10:41 pmDTW-ONT

7h 41m1 stop

$337Delta

Find Deal

Mon, Nov 24 - Wed, Dec 3

3:06 pm - 5:07 amONT-DTW

11h 01m1 stop

6:30 am - 2:12 pmDTW-ONT

10h 42m1 stop

$349Alaska Airlines

Find Deal

Mon, Sep 22 - Wed, Sep 24

1:00 pm - 12:03 amONT-DTW

8h 03m1 stop

5:20 am - 11:24 amDTW-ONT

9h 04m1 stop

$350Delta

Find Deal

Mon, Nov 24 - Tue, Dec 2

7:16 pm - 9:06 amONT-DTW

10h 50m2 stops

7:00 am - 4:05 pmDTW-ONT

12h 05m2 stops

$360American Airlines

Find Deal

Thu, Sep 11 - Tue, Sep 16

Frontier flights from Ontario to Detroit

Our best Frontier deals on Ontario to Detroit flight tickets

Frontier

Sep 20

ONT8:59 pmOntario

11h 05m

1 stop

DTW11:04 amDetroit Metropolitan Wayne County

Sep 26

DTW6:10 amDetroit Metropolitan Wayne County

16h 44m

1 stop

ONT7:54 pmOntario

$147

Find similar

Frontier

Sep 3

ONT12:59 amOntario

20h 47m

1 stop

DTW12:46 amDetroit Metropolitan Wayne County

Sep 7

DTW6:10 amDetroit Metropolitan Wayne County

28h 13m

1 stop

ONT7:23 amOntario

$148

Find similar

Frontier

Sep 7

ONT8:59 pmOntario

24h 47m

1 stop

DTW12:46 amDetroit Metropolitan Wayne County

Sep 9

DTW8:00 amDetroit Metropolitan Wayne County

14h 54m

1 stop

ONT7:54 pmOntario

$149

Find similar

Delta flights from Ontario to Detroit

Our best Delta deals on Ontario to Detroit flight tickets

Delta

Nov 24

ONT1:00 pmOntario

8h 03m

1 stop

DTW12:03 amDetroit Metropolitan Wayne County

Dec 3

DTW6:00 pmDetroit Metropolitan Wayne County

7h 41m

1 stop

ONT10:41 pmOntario

$337

Find similar

Delta

Nov 24

ONT1:00 pmOntario

8h 03m

1 stop

DTW12:03 amDetroit Metropolitan Wayne County

Dec 2

DTW5:20 amDetroit Metropolitan Wayne County

9h 04m

1 stop

ONT11:24 amOntario

$350

Find similar

Delta

Nov 28

ONT1:00 pmOntario

7h 18m

1 stop

DTW11:18 pmDetroit Metropolitan Wayne County

Dec 3

DTW8:25 amDetroit Metropolitan Wayne County

11h 52m

1 stop

ONT5:17 pmOntario

$355

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sat 9/20

8:59 pm-11:04 am

1 stop11h 05m

Detroit Metropolitan Wayne County

Fri 9/26

6:10 am-7:54 pm

1 stop16h 44m

$147

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Wed 9/3

12:59 am-12:46 am

1 stop20h 47m

Detroit Metropolitan Wayne County

Sun 9/7

6:10 am-7:23 am

1 stop28h 13m

$148

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Sun 9/7

8:59 pm-12:46 am

1 stop24h 47m

Detroit Metropolitan Wayne County

Tue 9/9

8:00 am-7:54 pm

1 stop14h 54m

$149

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Tue 9/2

12:59 am-5:39 pm

1 stop13h 40m

Detroit Metropolitan Wayne County

Sun 9/7

6:10 am-7:23 am

1 stop28h 13m

$172

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 10/23

10:05 am-11:49 pm

1 stop10h 44m

Detroit Metropolitan Wayne County

Sat 10/25

7:55 am-11:50 pm

1 stop18h 55m

$228

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 9/11

9:16 am-5:26 am

1 stop17h 10m

Detroit Metropolitan Wayne County

Tue 9/16

9:19 pm-11:33 am

2 stops41h 14m

$234

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Mon 11/24

1:00 pm-12:03 am

1 stop8h 03m

Detroit Metropolitan Wayne County

Wed 12/3

6:00 pm-10:41 pm

1 stop7h 41m

$337

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Mon 9/22

3:06 pm-5:07 am

1 stop11h 01m

Detroit Metropolitan Wayne County

Wed 9/24

6:30 am-2:12 pm

1 stop10h 42m

$349

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Mon 11/24

1:00 pm-12:03 am

1 stop8h 03m

Detroit Metropolitan Wayne County

Tue 12/2

5:20 am-11:24 am

1 stop9h 04m

$350

OntarioDetroit

ONT - DTW

ONTDTW

Ontario

Thu 9/11

7:16 pm-9:06 am

2 stops10h 50m

Detroit Metropolitan Wayne County

Tue 9/16

7:00 am-4:05 pm

2 stops12h 05m

$360

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

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 $279, 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 Friday. momondo users have found tickets for Friday departures for as low as $339. 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 $430.

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

In the afternoon is the cheapest time of day to fly from Ontario to Detroit when you can find flight prices for as low as $322. Flying to Detroit in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $417 on average. Flights to Detroit from Ontario at noon 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 $477 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 $340 on momondo.

How have Ontario to Detroit flight prices changed over time?

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

Direct flights	None

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 03m 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 5 as of August 2025.
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 (39% of total bookings). The next most popular airlines are Southwest (21%), United Airlines (15%), and Frontier (14%).

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
Frontier	PriceFrom $130	Free Cancellation	Rating 5.8 3,207 reviews	Search Frontier flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
American Airlines	PriceFrom $335	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $394	Free Cancellation	Rating 8.0 4,245 reviews	Search Southwest flights
United Airlines	PriceFrom $408	Free Cancellation	Rating 7.4 8,930 reviews	Search United Airlines flights

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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.