What airlines fly to Ontario?

Spirit Airlines, Delta and Frontier are the top three most popular airlines that fly to Ontario from Detroit according to our data. Spirit Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Phoenix (PHX) has the shortest average layover time for this route: 1h 54m.

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

Flights via Denver (DEN) offer the lowest average round-trip price of $198.

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

Phoenix (PHX) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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

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

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

Flights connecting via Chicago (MDW) have the shortest average one-way travel time: 6h 15m.

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

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

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

As of October 2025, there are 5 operators available to choose from for flights from Detroit to Ontario Airport.

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

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 Detroit to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport 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 Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$64 Cheap Flights from Detroit to Ontario in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from $385 to $760. The lowest price recently found on this route was $129.

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Find the cheapest flights from Detroit to Los Angeles

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Cheap round-trip flights

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7:55 am - 9:35 amDTW-ONT

28h 40m1 stop

7:39 am - 6:33 pmONT-DTW

7h 54m1 stop

$129Frontier

Find Deal

Sat, Oct 25 - Thu, Oct 30

7:55 am - 11:50 pmDTW-ONT

18h 55m1 stop

10:05 am - 12:58 pmONT-DTW

23h 53m2 stops

$186Frontier

Find Deal

Sat, Oct 25 - Thu, Oct 30

6:00 am - 11:50 pmDTW-ONT

20h 50m1 stop

10:47 pm - 5:28 amONT-DTW

27h 41m1 stop

$207Multiple Airlines

Find Deal

Wed, Oct 22 - Sun, Oct 26

5:14 pm - 11:10 amDTW-ONT

20h 56m1 stop

1:46 pm - 9:19 amONT-DTW

16h 33m1 stop

$212Multiple Airlines

Find Deal

Fri, Nov 7 - Fri, Nov 14

12:20 pm - 10:57 amDTW-ONT

25h 37m1 stop

6:30 am - 7:27 pmONT-DTW

9h 57m1 stop

$217Multiple Airlines

Find Deal

Thu, Dec 4 - Tue, Dec 9

9:53 pm - 6:49 pmDTW-ONT

23h 56m1 stop

8:45 am - 12:03 pmONT-DTW

24h 18m2 stops

$218Multiple Airlines

Find Deal

Wed, Nov 5 - Wed, Nov 12

6:00 am - 9:35 amDTW-ONT

6h 35m1 stop

7:39 am - 6:33 pmONT-DTW

7h 54m1 stop

$222Frontier

Find Deal

Sun, Oct 26 - Thu, Oct 30

5:15 pm - 3:08 pmDTW-ONT

24h 53m1 stop

4:03 pm - 4:19 pmONT-DTW

21h 16m1 stop

$306Alaska Airlines

Find Deal

Sat, Jan 10 - Fri, Jan 23

8:25 am - 10:47 pmDTW-ONT

17h 22m1 stop

6:40 am - 10:33 pmONT-DTW

12h 53m1 stop

$307Delta

Find Deal

Sat, Dec 6 - Thu, Dec 11

4:51 pm - 8:53 pmDTW-ONT

31h 02m1 stop

6:11 pm - 3:55 pmONT-DTW

18h 44m1 stop

$315Alaska Airlines

Find Deal

Fri, Nov 7 - Fri, Nov 14

Frontier flights from Detroit to Ontario

Our best Frontier deals on Detroit to Ontario flight tickets

Frontier

Oct 25

DTW7:55 amDetroit Metropolitan Wayne County

28h 40m

1 stop

ONT9:35 amOntario

Oct 30

ONT7:39 amOntario

7h 54m

1 stop

DTW6:33 pmDetroit Metropolitan Wayne County

$129

Find similar

Frontier

Oct 25

DTW7:55 amDetroit Metropolitan Wayne County

18h 55m

1 stop

ONT11:50 pmOntario

Oct 30

ONT10:05 amOntario

23h 53m

2 stops

DTW12:58 pmDetroit Metropolitan Wayne County

$186

Find similar

Frontier

Oct 26

DTW6:00 amDetroit Metropolitan Wayne County

6h 35m

1 stop

ONT9:35 amOntario

Oct 30

ONT7:39 amOntario

7h 54m

1 stop

DTW6:33 pmDetroit Metropolitan Wayne County

$222

Find similar

Alaska Airlines flights from Detroit to Ontario

Our best Alaska Airlines deals on Detroit to Ontario flight tickets

Alaska Airlines

Jan 10

DTW5:15 pmDetroit Metropolitan Wayne County

24h 53m

1 stop

ONT3:08 pmOntario

Jan 23

ONT4:03 pmOntario

21h 16m

1 stop

DTW4:19 pmDetroit Metropolitan Wayne County

$306

Find similar

Alaska Airlines

Nov 7

DTW4:51 pmDetroit Metropolitan Wayne County

31h 02m

1 stop

ONT8:53 pmOntario

Nov 14

ONT6:11 pmOntario

18h 44m

1 stop

DTW3:55 pmDetroit Metropolitan Wayne County

$315

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 10/25

7:55 am-9:35 am

1 stop28h 40m

Ontario

Thu 10/30

7:39 am-6:33 pm

1 stop7h 54m

$129

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 10/25

7:55 am-11:50 pm

1 stop18h 55m

Ontario

Thu 10/30

10:05 am-12:58 pm

2 stops23h 53m

$186

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 10/22

6:00 am-11:50 pm

1 stop20h 50m

Ontario

Sun 10/26

10:47 pm-5:28 am

1 stop27h 41m

$207

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 11/7

5:14 pm-11:10 am

1 stop20h 56m

Ontario

Fri 11/14

1:46 pm-9:19 am

1 stop16h 33m

$212

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 12/4

12:20 pm-10:57 am

1 stop25h 37m

Ontario

Tue 12/9

6:30 am-7:27 pm

1 stop9h 57m

$217

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Wed 11/5

9:53 pm-6:49 pm

1 stop23h 56m

Ontario

Wed 11/12

8:45 am-12:03 pm

2 stops24h 18m

$218

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 10/26

6:00 am-9:35 am

1 stop6h 35m

Ontario

Thu 10/30

7:39 am-6:33 pm

1 stop7h 54m

$222

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 1/10

5:15 pm-3:08 pm

1 stop24h 53m

Ontario

Fri 1/23

4:03 pm-4:19 pm

1 stop21h 16m

$306

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 12/6

8:25 am-10:47 pm

1 stop17h 22m

Ontario

Thu 12/11

6:40 am-10:33 pm

1 stop12h 53m

$307

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 11/7

4:51 pm-8:53 pm

1 stop31h 02m

Ontario

Fri 11/14

6:11 pm-3:55 pm

1 stop18h 44m

$315

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 Detroit to Ontario

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 Detroit and Ontario?

What is the cheapest month to fly to Ontario?

In general, September is the cheapest month to fly from Detroit to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $198. If you aren’t able to travel during the month of September, then book flights to Ontario from Detroit during February instead. Flights to Ontario in February, while not as cheap as those in September, still average around $281.

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

The cheapest day to depart on your flight to Ontario is on a Sunday when prices can be found for as low as $248. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Detroit to Ontario for around $406.

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

In the evening is the cheapest time of day to fly from Detroit to Ontario when you can find flight prices for as low as $297. Flying to Ontario 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 afternoon when prices are $469 on average. Flights to Ontario from Detroit in the afternoon 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 Ontario?

You are more likely to see cheaper flights to Ontario from Detroit when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $429 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Detroit for as low as $313 on momondo.

How have Detroit to Ontario flight prices changed over time?

When to book flights from Detroit to Ontario

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

Estimated round-trip price

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

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

Direct flights	None

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

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How far is Detroit to Ontario by plane?
The straight-line distance from Detroit to Ontario is 1947.2 mi. Flights usually cover this in 6h 35m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Detroit to Ontario Airport?
Prices for flights from Detroit to Ontario Airport were last updated today.
How many operators does momondo search for flights from Detroit to Ontario Airport?
As of October 2025, there are 5 operators available to choose from for flights from Detroit to Ontario Airport.
How old do you have to be to fly from Detroit to Ontario Airport?
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 Detroit to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport 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 Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Detroit to Ontario?
momondo data reveals that the most frequently booked airline on the route from Detroit to Ontario is American Airlines, representing 41% of all bookings. The subsequent popular airlines are Delta at 33% and Frontier at 26%.

Best airlines flying from Detroit to Ontario

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $149	Free Cancellation	Rating 5.8 3,143 reviews	Search Frontier flights
United Airlines	PriceFrom $329	Free Cancellation	Rating 7.4 8,968 reviews	Search United Airlines flights
American Airlines	PriceFrom $329	Free Cancellation	Rating 7.2 11,043 reviews	Search American Airlines flights
Delta	PriceFrom $344	Free Cancellation	Rating 7.9 7,969 reviews	Search Delta flights
Southwest	PriceFrom $390	Free Cancellation	Rating 8.0 4,237 reviews	Search Southwest flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Detroit to Ontario for you.

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

Flights from Detroit to Ontario 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 Detroit to Ontario?

Once all potential Detroit to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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