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

Phoenix (PHX) has the shortest average layover time for this route: 1h 10m.

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

Flights via Denver (DEN) offer the lowest average round-trip price of $344.

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

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 6h 17m.

What airlines fly to Detroit?

Delta, Frontier and Southwest are the top three most popular airlines that fly to Detroit from Ontario according to our data. Delta is the first choice among our users, with 63% 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: 47% of momondo users choosing 1-stop flights on this route connected there.

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

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

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 September 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.

$81 Cheap Flights from Ontario to Detroit in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Detroit

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:52 am - 11:55 pmONT Ontario-DTW Detroit Metropolitan Wayne County

9h 03m1 stop Denver Intl

8:35 pm - 11:50 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

6h 15m1 stop Denver Intl

$168Frontier

Wed, Oct 14 - Wed, Oct 21

6:15 am - 3:28 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 13m1 stop Denver Intl

7:08 am - 10:29 amDTW Detroit Metropolitan Wayne County-ONT Ontario

6h 21m1 stop Denver Intl

$174Frontier

Tue, Oct 6 - Tue, Oct 13

11:13 am - 5:40 amONT Ontario-DTW Detroit Metropolitan Wayne County

15h 27m1 stop Seattle/Tacoma Intl

7:00 am - 10:17 amDTW Detroit Metropolitan Wayne County-ONT Ontario

30h 17m1 stop Seattle/Tacoma Intl

$343Alaska Airlines

Sat, Oct 10 - Wed, Oct 14

11:13 am - 5:40 amONT Ontario-DTW Detroit Metropolitan Wayne County

15h 27m1 stop Seattle/Tacoma Intl

7:00 am - 10:17 amDTW Detroit Metropolitan Wayne County-ONT Ontario

30h 17m1 stop Seattle/Tacoma Intl

$343Alaska Airlines

Sat, Oct 17 - Fri, Oct 23

10:10 pm - 9:21 amONT Ontario-DTW Detroit Metropolitan Wayne County

8h 11m1 stop Charlotte Douglas

7:57 am - 11:53 amDTW Detroit Metropolitan Wayne County-ONT Ontario

6h 56m1 stop Dallas/Fort Worth

$417American Airlines

Sat, Oct 10 - Sat, Oct 17

9:30 pm - 10:05 amONT Ontario-DTW Detroit Metropolitan Wayne County

9h 35m2 stops Las Vegas Harry Reid Intl Chicago Midway

3:50 pm - 10:05 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

9h 15m2 stops Denver Intl Phoenix Sky Harbor Intl

$427Southwest

Mon, Oct 5 - Tue, Oct 13

7:34 pm - 9:30 amONT Ontario-DTW Detroit Metropolitan Wayne County

10h 56m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

10:00 am - 3:16 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

8h 16m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

$427American Airlines

Mon, Oct 19 - Tue, Oct 27

12:16 pm - 10:15 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 59m1 stop Atlanta Hartsfield-Jackson

6:08 pm - 11:49 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

8h 41m1 stop Salt Lake City

$438Delta

Fri, Nov 6 - Tue, Nov 10

6:00 am - 3:20 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 20m1 stop Salt Lake City

5:15 am - 10:00 amDTW Detroit Metropolitan Wayne County-ONT Ontario

7h 45m1 stop Atlanta Hartsfield-Jackson

$438Delta

Thu, Dec 24 - Fri, Jan 1

12:00 pm - 11:40 pmONT Ontario-DTW Detroit Metropolitan Wayne County

8h 40m2 stops Sacramento Intl Denver Intl

5:55 am - 11:25 amDTW Detroit Metropolitan Wayne County-ONT Ontario

8h 30m2 stops Denver Intl Phoenix Sky Harbor Intl

$498Southwest

Thu, Oct 8 - Mon, Oct 12

Cheap last minute flights

Enter your travel dates to find the best prices.

7:11 pm - 9:52 amONT Ontario-DTW Detroit Metropolitan Wayne County

11h 41m1 stop Dallas/Fort Worth

7:15 am - 11:22 amDTW Detroit Metropolitan Wayne County-ONT Ontario

7h 07m1 stop Las Vegas Harry Reid Intl

$278Frontier

Wed, Sep 9 - Fri, Sep 11

2:30 pm - 4:55 amONT Ontario-DTW Detroit Metropolitan Wayne County

11h 25m1 stop Las Vegas Harry Reid Intl

10:37 am - 4:46 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

9h 09m1 stop Dallas/Fort Worth

$278Frontier

Wed, Sep 9 - Sat, Sep 12

6:45 pm - 7:40 pmONT Ontario-DTW Detroit Metropolitan Wayne County

21h 55m1 stop Houston George Bush Intcntl

4:02 pm - 11:16 amDTW Detroit Metropolitan Wayne County-ONT Ontario

22h 14m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

$543Multiple Airlines

Thu, Sep 10 - Sat, Sep 19

5:40 am - 4:20 pmONT Ontario-DTW Detroit Metropolitan Wayne County

7h 40m2 stops Las Vegas Harry Reid Intl Denver Intl

8:30 am - 3:15 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

9h 45m2 stops Chicago Midway Phoenix Sky Harbor Intl

$711Southwest

Thu, Sep 10 - Sat, Sep 19

9:01 am - 11:58 pmONT Ontario-DTW Detroit Metropolitan Wayne County

11h 57m2 stops San Francisco Chicago O'Hare Intl

12:35 pm - 10:51 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

13h 16m2 stops Chicago O'Hare Intl San Francisco

$711United Airlines

Fri, Sep 11 - Fri, Sep 18

3:14 pm - 5:22 amONT Ontario-DTW Detroit Metropolitan Wayne County

11h 08m1 stop Seattle/Tacoma Intl

5:39 pm - 4:10 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

25h 31m2 stops Seattle/Tacoma Intl Boise Air Term. Gowen Fld

$734Alaska Airlines

Fri, Sep 11 - Wed, Sep 16

9:01 am - 11:58 pmONT Ontario-DTW Detroit Metropolitan Wayne County

11h 57m2 stops San Francisco Chicago O'Hare Intl

10:30 am - 8:53 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

13h 23m2 stops Chicago O'Hare Intl Denver Intl

$816United Airlines

Fri, Sep 11 - Mon, Sep 14

2:22 pm - 9:47 amONT Ontario-DTW Detroit Metropolitan Wayne County

16h 25m2 stops Dallas/Fort Worth Chicago O'Hare Intl

8:47 pm - 9:29 amDTW Detroit Metropolitan Wayne County-ONT Ontario

15h 42m2 stops Chicago O'Hare Intl Dallas/Fort Worth

$903American Airlines

Fri, Sep 11 - Wed, Sep 16

6:15 am - 9:33 pmONT Ontario-DTW Detroit Metropolitan Wayne County

12h 18m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

8:01 am - 6:17 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

13h 16m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

$994American Airlines

Sat, Sep 12 - Wed, Sep 16

10:05 am - 11:45 pmONT Ontario-DTW Detroit Metropolitan Wayne County

10h 40m2 stops Phoenix Sky Harbor Intl Denver Intl

6:20 am - 11:25 amDTW Detroit Metropolitan Wayne County-ONT Ontario

8h 05m2 stops Denver Intl Las Vegas Harry Reid Intl

$1,063Southwest

Sun, Sep 13 - Thu, Sep 17

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Frontier flights from Ontario to Detroit

Our best Frontier deals on Ontario to Detroit flight tickets

Frontier

Oct 14

ONT11:52 amOntario

9h 03m

1 stop

DTW11:55 pmDetroit Metropolitan Wayne County

Oct 21

DTW8:35 pmDetroit Metropolitan Wayne County

6h 15m

1 stop

ONT11:50 pmOntario

$168

Frontier

Oct 6

ONT6:15 amOntario

6h 13m

1 stop

DTW3:28 pmDetroit Metropolitan Wayne County

Oct 13

DTW7:08 amDetroit Metropolitan Wayne County

6h 21m

1 stop

ONT10:29 amOntario

$174

Frontier

Oct 13

ONT6:15 amOntario

14h 40m

1 stop

DTW11:55 pmDetroit Metropolitan Wayne County

Oct 20

DTW8:35 pmDetroit Metropolitan Wayne County

6h 15m

1 stop

ONT11:50 pmOntario

$175

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Wed 10/14

11:52 am-11:55 pm

1 stop9h 03m

Detroit Metropolitan Wayne County

Wed 10/21

8:35 pm-11:50 pm

1 stop6h 15m

$168

Quickest round-trip

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Tue 10/6

6:15 am-3:28 pm

1 stop6h 13m

Detroit Metropolitan Wayne County

Tue 10/13

7:08 am-10:29 am

1 stop6h 21m

$174

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Sat 10/10

11:13 am-5:40 am

1 stop15h 27m

Detroit Metropolitan Wayne County

Wed 10/14

7:00 am-10:17 am

1 stop30h 17m

$343

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Sat 10/17

11:13 am-5:40 am

1 stop15h 27m

Detroit Metropolitan Wayne County

Fri 10/23

7:00 am-10:17 am

1 stop30h 17m

$343

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Sat 10/10

10:10 pm-9:21 am

1 stop8h 11m

Detroit Metropolitan Wayne County

Sat 10/17

7:57 am-11:53 am

1 stop6h 56m

$417

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Mon 10/5

9:30 pm-10:05 am

2 stops9h 35m

Detroit Metropolitan Wayne County

Tue 10/13

3:50 pm-10:05 pm

2 stops9h 15m

$427

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Mon 10/19

7:34 pm-9:30 am

2 stops10h 56m

Detroit Metropolitan Wayne County

Tue 10/27

10:00 am-3:16 pm

2 stops8h 16m

$427

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Fri 11/6

12:16 pm-10:15 pm

1 stop6h 59m

Detroit Metropolitan Wayne County

Tue 11/10

6:08 pm-11:49 pm

1 stop8h 41m

$438

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Thu 12/24

6:00 am-3:20 pm

1 stop6h 20m

Detroit Metropolitan Wayne County

Fri 1/1

5:15 am-10:00 am

1 stop7h 45m

$438

OntarioDetroit

ONT Ontario - DTW Detroit Metropolitan Wayne County

ONTDTW

Ontario

Thu 10/8

12:00 pm-11:40 pm

2 stops8h 40m

Detroit Metropolitan Wayne County

Mon 10/12

5:55 am-11:25 am

2 stops8h 30m

$498

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?

Prices are currently low for flights on this route.

Typical prices usually range from $344 to $480.
The lowest price recently found on this route was $168.

What is the cheapest month to fly to Detroit?

The cheapest month to fly to Detroit from Ontario is in December. Flight prices, which tend to average around $369, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in December, then October is your next best option. Flight prices from Ontario to Detroit during October average around $372.

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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $529. 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 $656.

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

In the evening is the cheapest time of day to fly from Ontario to Detroit when you can find flight prices for as low as $488. Flying to Detroit in the evening 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 $601 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 from Ontario 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 $446 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 $331 on momondo.

How have Ontario to Detroit flight prices changed over time?

As of September 2026, prices for Ontario to Detroit flights are approximately 451% more expensive 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

Best Price Found	$81
Fastest flight time	6h 09m
Direct flights	None

The best one-way flight to Detroit from Ontario in the past 72 hours is $81. The best round-trip flight deal from Ontario to Detroit found on momondo in the last 72 hours is $168.

The fastest flight from Ontario to Detroit takes 6h 09m

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

Search flight deals

Frequently asked questions about flying from Ontario to Detroit

How far is Ontario to Detroit by plane?
A flight from Ontario to Detroit will travel around 1947.2 mi. 6h 09m 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 September 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 Southwest (32% of total bookings). The next most popular airlines are Delta (29%), American Airlines (15%), and United Airlines (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
Frontier	PriceFrom $200	Free Cancellation	Rating 5.6 2,614 reviews	Search Frontier flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.8 8,548 reviews	Search Delta flights
American Airlines	PriceFrom $310	Free Cancellation	Rating 7.1 12,042 reviews	Search American Airlines flights
Southwest	PriceFrom $338	Free Cancellation	Rating 8.0 4,195 reviews	Search Southwest flights
United Airlines	PriceFrom $340	Free Cancellation	Rating 7.4 10,173 reviews	Search United Airlines flights

Roseville

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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.