What airlines fly to Ontario?

Delta, Frontier and Southwest are the top three most popular airlines that fly to Ontario from Detroit according to our data. Delta is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Flights via Chicago (MDW) offer the lowest average round-trip price of $360.

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

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

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

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 6h 48m.

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

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

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

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

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 November 2026, 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.

$78 Cheap Flights from Detroit to Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Detroit to Los Angeles

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:25 am - 12:05 amDTW Detroit Metropolitan Wayne County-ONT Ontario

19h 40m1 stop Denver Intl

6:30 am - 12:58 amONT Ontario-DTW Detroit Metropolitan Wayne County

15h 28m1 stop Denver Intl

$171Frontier

Sat, Jan 23 - Sat, Feb 6

2:31 pm - 11:51 amDTW Detroit Metropolitan Wayne County-ONT Ontario

24h 20m2 stops Dallas/Fort Worth Las Vegas Harry Reid Intl

6:00 am - 1:10 amONT Ontario-DTW Detroit Metropolitan Wayne County

16h 10m1 stop Denver Intl

$179Frontier

Tue, Dec 8 - Tue, Dec 15

6:18 pm - 11:13 amDTW Detroit Metropolitan Wayne County-ONT Ontario

19h 55m1 stop Seattle/Tacoma Intl

6:00 am - 5:20 pmONT Ontario-DTW Detroit Metropolitan Wayne County

8h 20m1 stop Seattle/Tacoma Intl

$363Alaska Airlines

Tue, Dec 8 - Tue, Dec 15

8:14 pm - 11:57 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

6h 43m1 stop Salt Lake City

1:15 pm - 10:46 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 31m1 stop Salt Lake City

$432Delta

Thu, Dec 17 - Thu, Dec 24

8:14 pm - 11:57 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

6h 43m1 stop Salt Lake City

1:15 pm - 10:46 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 31m1 stop Salt Lake City

$434Delta

Thu, Dec 17 - Thu, Dec 24

6:20 am - 3:03 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

11h 43m1 stop Seattle/Tacoma Intl

3:59 pm - 5:07 pmONT Ontario-DTW Detroit Metropolitan Wayne County

22h 08m1 stop Seattle/Tacoma Intl

$437Alaska Airlines

Thu, Dec 17 - Thu, Dec 24

6:00 am - 1:28 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

10h 28m1 stop Dallas/Fort Worth

1:24 pm - 10:51 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 27m1 stop Phoenix Sky Harbor Intl

$437American Airlines

Thu, Jan 14 - Mon, Jan 18

2:34 pm - 10:15 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

10h 41m2 stops Charlotte Douglas Phoenix Sky Harbor Intl

1:24 pm - 10:51 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 27m1 stop Phoenix Sky Harbor Intl

$442American Airlines

Thu, Jan 14 - Mon, Jan 18

10:25 am - 5:35 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

10h 10m2 stops Chicago O'Hare Intl San Francisco

5:00 am - 5:07 pmONT Ontario-DTW Detroit Metropolitan Wayne County

9h 07m2 stops Denver Intl Chicago O'Hare Intl

$447United Airlines

Thu, Jan 28 - Mon, Feb 1

10:35 am - 5:46 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

10h 11m2 stops Chicago O'Hare Intl San Francisco

5:00 am - 5:34 pmONT Ontario-DTW Detroit Metropolitan Wayne County

9h 34m2 stops Denver Intl Chicago O'Hare Intl

$515United Airlines

Thu, Dec 24 - Wed, Dec 30

Cheap last minute flights

Enter your travel dates to find the best prices.

7:15 am - 4:21 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

12h 06m1 stop Las Vegas Harry Reid Intl

6:30 am - 3:30 pmONT Ontario-DTW Detroit Metropolitan Wayne County

6h 00m1 stop Denver Intl

$370Frontier

Tue, Nov 17 - Wed, Nov 18

7:37 pm - 9:40 amDTW Detroit Metropolitan Wayne County-ONT Ontario

17h 03m2 stops Dallas/Fort Worth Las Vegas Harry Reid Intl

8:15 am - 6:56 amONT Ontario-DTW Detroit Metropolitan Wayne County

19h 41m1 stop Las Vegas Harry Reid Intl

$378Frontier

Tue, Nov 17 - Mon, Nov 23

10:07 am - 4:38 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

9h 31m1 stop Dallas/Fort Worth

4:13 pm - 6:56 amONT Ontario-DTW Detroit Metropolitan Wayne County

11h 43m1 stop Las Vegas Harry Reid Intl

$390Frontier

Tue, Nov 17 - Sun, Nov 22

10:07 am - 7:08 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

12h 01m1 stop Dallas/Fort Worth

10:40 pm - 5:29 pmONT Ontario-DTW Detroit Metropolitan Wayne County

15h 49m2 stops Las Vegas Harry Reid Intl Minneapolis St Paul

$604Multiple Airlines

Thu, Nov 12 - Thu, Nov 26

10:07 am - 7:08 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

12h 01m1 stop Dallas/Fort Worth

6:08 pm - 5:29 pmONT Ontario-DTW Detroit Metropolitan Wayne County

20h 21m3 stops Dallas/Fort Worth Chicago O'Hare Intl Minneapolis St Paul

$631Multiple Airlines

Thu, Nov 12 - Thu, Nov 26

6:42 am - 6:42 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

15h 00m2 stops Chicago O'Hare Intl Dallas/Fort Worth

9:20 am - 11:53 pmONT Ontario-DTW Detroit Metropolitan Wayne County

11h 33m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$908American Airlines

Sat, Nov 14 - Wed, Nov 25

6:42 am - 6:42 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

15h 00m2 stops Chicago O'Hare Intl Dallas/Fort Worth

6:30 am - 9:44 pmONT Ontario-DTW Detroit Metropolitan Wayne County

12h 14m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$908American Airlines

Sat, Nov 14 - Mon, Nov 23

7:26 am - 3:33 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

11h 07m2 stops Chicago O'Hare Intl San Francisco

6:00 am - 4:04 pmONT Ontario-DTW Detroit Metropolitan Wayne County

7h 04m1 stop Houston George Bush Intcntl

$939United Airlines

Thu, Nov 12 - Sun, Nov 22

6:15 am - 6:47 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

15h 32m1 stop Chicago O'Hare Intl

5:00 am - 5:10 pmONT Ontario-DTW Detroit Metropolitan Wayne County

9h 10m2 stops Denver Intl Chicago O'Hare Intl

$939United Airlines

Thu, Nov 12 - Tue, Nov 24

5:50 am - 1:00 pmDTW Detroit Metropolitan Wayne County-ONT Ontario

10h 10m2 stops Nashville Intl Las Vegas Harry Reid Intl

5:45 am - 5:20 pmONT Ontario-DTW Detroit Metropolitan Wayne County

8h 35m2 stops Las Vegas Harry Reid Intl Denver Intl

$1,190Southwest

Fri, Nov 13 - Thu, Nov 19

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Frontier flights from Detroit to Ontario

Our best Frontier deals on Detroit to Ontario flight tickets

Frontier

Jan 23

DTW7:25 amDetroit Metropolitan Wayne County

19h 40m

1 stop

ONT12:05 amOntario

Feb 6

ONT6:30 amOntario

15h 28m

1 stop

DTW12:58 amDetroit Metropolitan Wayne County

$171

Frontier

Dec 8

DTW2:31 pmDetroit Metropolitan Wayne County

24h 20m

2 stops

ONT11:51 amOntario

Dec 15

ONT6:00 amOntario

16h 10m

1 stop

DTW1:10 amDetroit Metropolitan Wayne County

$179

Frontier

Jan 13

DTW7:15 amDetroit Metropolitan Wayne County

20h 03m

1 stop

ONT12:18 amOntario

Feb 2

ONT6:30 amOntario

15h 28m

1 stop

DTW12:58 amDetroit Metropolitan Wayne County

$184

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Sat 1/23

7:25 am-12:05 am

1 stop19h 40m

Ontario

Sat 2/6

6:30 am-12:58 am

1 stop15h 28m

$171

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Tue 12/8

2:31 pm-11:51 am

2 stops24h 20m

Ontario

Tue 12/15

6:00 am-1:10 am

1 stop16h 10m

$179

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Tue 12/8

6:18 pm-11:13 am

1 stop19h 55m

Ontario

Tue 12/15

6:00 am-5:20 pm

1 stop8h 20m

$363

Quickest round-trip

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Thu 12/17

8:14 pm-11:57 pm

1 stop6h 43m

Ontario

Thu 12/24

1:15 pm-10:46 pm

1 stop6h 31m

$432

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Thu 12/17

8:14 pm-11:57 pm

1 stop6h 43m

Ontario

Thu 12/24

1:15 pm-10:46 pm

1 stop6h 31m

$434

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Thu 12/17

6:20 am-3:03 pm

1 stop11h 43m

Ontario

Thu 12/24

3:59 pm-5:07 pm

1 stop22h 08m

$437

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Thu 1/14

6:00 am-1:28 pm

1 stop10h 28m

Ontario

Mon 1/18

1:24 pm-10:51 pm

1 stop6h 27m

$437

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Thu 1/14

2:34 pm-10:15 pm

2 stops10h 41m

Ontario

Mon 1/18

1:24 pm-10:51 pm

1 stop6h 27m

$442

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Thu 1/28

10:25 am-5:35 pm

2 stops10h 10m

Ontario

Mon 2/1

5:00 am-5:07 pm

2 stops9h 07m

$447

DetroitOntario

DTW Detroit Metropolitan Wayne County - ONT Ontario

DTWONT

Detroit Metropolitan Wayne County

Thu 12/24

10:35 am-5:46 pm

2 stops10h 11m

Ontario

Wed 12/30

5:00 am-5:34 pm

2 stops9h 34m

$515

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 cheapest month to fly to Ontario?

In general, January 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 $358. If you aren’t able to travel during the month of January, then book flights to Ontario from Detroit during July instead. Flights to Ontario in July, while not as cheap as those in January, still average around $387.

How far in advance should I book a flight from Detroit 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 $458 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 $354 on momondo.

Can stopping save me money on Detroit to Ontario flights?

You could potentially save up to 25% on your flight if you consider stops on a Detroit to Ontario flight.

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

Best Price Found	$78
Fastest flight time	6h 43m
Direct flights	None

The best one-way flight to Ontario from Detroit in the past 72 hours is $78. The best round-trip flight deal from Detroit to Ontario found on momondo in the last 72 hours is $171.

The fastest flight from Detroit to Ontario takes 6h 43m

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

Search flight deals

Frequently asked questions about flying from Detroit to Ontario

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 43m, 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 November 2026, 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 Delta, representing 41% of all bookings. The subsequent popular airlines are Southwest at 32% and Frontier at 27%.

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 $222	Free Cancellation	Rating 5.5 2,504 reviews	Search Frontier flights
American Airlines	PriceFrom $296	Free Cancellation	Rating 7.0 12,228 reviews	Search American Airlines flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.3 10,482 reviews	Search United Airlines flights
Delta	PriceFrom $346	Free Cancellation	Rating 7.8 8,710 reviews	Search Delta flights
Southwest	PriceFrom $353	Free Cancellation	Rating 8.0 4,219 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.

An easier way to manage your Ontario trip

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Cheap flights from Detroit to Los Angeles from $78

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Detroit to Los Angeles departing on 1/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Detroit to Ontario

Our best Frontier deals on Detroit to Ontario flight tickets

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Use the filters below to find and compare flights from Detroit to Ontario that are best for you.

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How to get the cheapest flight ticket from Detroit to Ontario

What is the cheapest month to fly to Ontario?

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

Can stopping save me money on Detroit to Ontario flights?

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

What airlines fly to Ontario?

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

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

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

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

When to book flights from Detroit to Ontario

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Detroit to Ontario

Best airlines flying from Detroit to Ontario

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

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Los Angeles

List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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