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 57% 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 travel time from Detroit to Ontario?

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

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

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

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

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

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

Phoenix (PHX) was the most common stop: 57% of momondo users choosing 1-stop flights on this route connected there.

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.

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 December 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.

$74 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 $390 to $486. The lowest price recently found on this route was $148.

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5:14 pm - 12:20 am

DTW

ONT

10h 06m1 stop

6:20 am - 4:19 pm

ONT

DTW

6h 59m1 stop

$148Frontier

Mon, Feb 2 - Fri, Feb 6

4:43 pm - 11:56 pm

DTW

ONT

10h 13m1 stop

7:15 am - 11:24 am

ONT

DTW

25h 09m1 stop

$149Frontier

Fri, Jan 9 - Sat, Jan 17

3:10 pm - 11:14 pm

DTW

ONT

11h 04m2 stops

7:15 am - 11:24 am

ONT

DTW

25h 09m1 stop

$157Frontier

Sat, Jan 10 - Sat, Jan 17

4:43 pm - 11:56 pm

DTW

ONT

10h 13m1 stop

3:23 pm - 4:33 pm

ONT

DTW

22h 10m1 stop

$162Frontier

Fri, Jan 9 - Sun, Jan 18

4:43 pm - 11:56 pm

DTW

ONT

10h 13m1 stop

3:07 pm - 8:44 pm

ONT

DTW

26h 37m2 stops

$164Frontier

Fri, Jan 9 - Tue, Jan 20

12:19 pm - 11:59 pm

DTW

ONT

14h 40m1 stop

6:20 am - 4:19 pm

ONT

DTW

6h 59m1 stop

$165Frontier

Thu, Jan 15 - Fri, Jan 30

12:05 pm - 11:59 pm

DTW

ONT

14h 54m1 stop

6:00 am - 11:10 am

ONT

DTW

26h 10m1 stop

$166Frontier

Thu, Feb 26 - Sun, Mar 1

3:10 pm - 11:14 pm

DTW

ONT

11h 04m2 stops

7:15 am - 11:24 am

ONT

DTW

25h 09m1 stop

$167Frontier

Sat, Jan 10 - Sat, Jan 17

3:10 pm - 11:14 pm

DTW

ONT

11h 04m2 stops

3:23 pm - 4:33 pm

ONT

DTW

22h 10m1 stop

$170Frontier

Sat, Jan 10 - Sun, Jan 18

4:43 pm - 11:56 pm

DTW

ONT

10h 13m1 stop

3:23 pm - 4:33 pm

ONT

DTW

22h 10m1 stop

$172Frontier

Sun, Jan 11 - Sun, Jan 18

Frontier flights from Detroit to Ontario

Our best Frontier deals on Detroit to Ontario flight tickets

Frontier

Feb 2

DTW5:14 pmDetroit Metropolitan Wayne County

10h 06m

1 stop

ONT12:20 amOntario

Feb 6

ONT6:20 amOntario

6h 59m

1 stop

DTW4:19 pmDetroit Metropolitan Wayne County

$148

Find similar

Frontier

Jan 9

DTW4:43 pmDetroit Metropolitan Wayne County

10h 13m

1 stop

ONT11:56 pmOntario

Jan 17

ONT7:15 amOntario

25h 09m

1 stop

DTW11:24 amDetroit Metropolitan Wayne County

$149

Find similar

Frontier

Jan 10

DTW3:10 pmDetroit Metropolitan Wayne County

11h 04m

2 stops

ONT11:14 pmOntario

Jan 17

ONT7:15 amOntario

25h 09m

1 stop

DTW11:24 amDetroit Metropolitan Wayne County

$157

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 2/2

5:14 pm-12:20 am

1 stop10h 06m

Ontario

Fri 2/6

6:20 am-4:19 pm

1 stop6h 59m

$148

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 1/9

4:43 pm-11:56 pm

1 stop10h 13m

Ontario

Sat 1/17

7:15 am-11:24 am

1 stop25h 09m

$149

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 1/10

3:10 pm-11:14 pm

2 stops11h 04m

Ontario

Sat 1/17

7:15 am-11:24 am

1 stop25h 09m

$157

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 1/9

4:43 pm-11:56 pm

1 stop10h 13m

Ontario

Sun 1/18

3:23 pm-4:33 pm

1 stop22h 10m

$162

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Fri 1/9

4:43 pm-11:56 pm

1 stop10h 13m

Ontario

Tue 1/20

3:07 pm-8:44 pm

2 stops26h 37m

$164

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 1/15

12:19 pm-11:59 pm

1 stop14h 40m

Ontario

Fri 1/30

6:20 am-4:19 pm

1 stop6h 59m

$165

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Thu 2/26

12:05 pm-11:59 pm

1 stop14h 54m

Ontario

Sun 3/1

6:00 am-11:10 am

1 stop26h 10m

$166

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 1/10

3:10 pm-11:14 pm

2 stops11h 04m

Ontario

Sat 1/17

7:15 am-11:24 am

1 stop25h 09m

$167

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sat 1/10

3:10 pm-11:14 pm

2 stops11h 04m

Ontario

Sun 1/18

3:23 pm-4:33 pm

1 stop22h 10m

$170

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Sun 1/11

4:43 pm-11:56 pm

1 stop10h 13m

Ontario

Sun 1/18

3:23 pm-4:33 pm

1 stop22h 10m

$172

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 $443 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 $322 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

Fastest flight time	6h 22m
Direct flights	None

The fastest flight from Detroit to Ontario takes 6h 22m

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 7h 49m, 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 December 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 37% and Frontier at 22%.

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 $155	Free Cancellation	Rating 5.8 3,091 reviews	Search Frontier flights
United Airlines	PriceFrom $329	Free Cancellation	Rating 7.4 9,066 reviews	Search United Airlines flights
American Airlines	PriceFrom $329	Free Cancellation	Rating 7.2 11,047 reviews	Search American Airlines flights
Delta	PriceFrom $344	Free Cancellation	Rating 7.9 8,011 reviews	Search Delta flights
Southwest	PriceFrom $386	Free Cancellation	Rating 8.0 4,250 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.