A city skyline at dusk with illuminated buildings and a calm river in the foreground.

$82 Cheap Flights from Ontario Intl. Airport (ONT) to Detroit (DTW)

View $82 flight on Tue, Oct 27, 2026Opens in a new window

Popular airlines from Ontario Intl. Airport (ONT) to Detroit Metropolitan Wayne County Airport (DTW)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Ontario Intl. Airport to Detroit (ONT-DTW)

Prices were available within the past 7 days and start at $82 for one-way flights and $163 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Oct 31 - Tue, Nov 3
ONT
Ontario
DTW
Detroit
$163 Roundtrip, found 13 hours ago
$163
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Sat, Oct 31 from Ontario to Detroit, returning Tue, Nov 3, priced at $163 found 13 hours ago
Frontier Airlines
Sat, Nov 7 - Wed, Nov 11
ONT
Ontario
DTW
Detroit
$164 Roundtrip, found 1 day ago
$164
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Nov 7 from Ontario to Detroit, returning Wed, Nov 11, priced at $164 found 1 day ago
Frontier Airlines
Wed, Oct 14 - Sat, Oct 17
ONT
Ontario
DTW
Detroit
$173 Roundtrip, found 13 hours ago
$173
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Wed, Oct 14 from Ontario to Detroit, returning Sat, Oct 17, priced at $173 found 13 hours ago
Frontier Airlines
Tue, Oct 20 - Sat, Oct 24
ONT
Ontario
DTW
Detroit
$174 Roundtrip, found 11 hours ago
$174
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Tue, Oct 20 from Ontario to Detroit, returning Sat, Oct 24, priced at $174 found 11 hours ago
Frontier Airlines
Sat, Oct 17 - Tue, Oct 20
ONT
Ontario
DTW
Detroit
$175 Roundtrip, found 1 day ago
$175
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Oct 17 from Ontario to Detroit, returning Tue, Oct 20, priced at $175 found 1 day ago
Frontier Airlines
Wed, Oct 21 - Sat, Nov 7
ONT
Ontario
DTW
Detroit
$184 Roundtrip, just found
$184
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Oct 21 from Ontario to Detroit, returning Sat, Nov 7, priced at $184 just found
Southwest Airlines
Wed, Dec 9 - Tue, Dec 15
ONT
Ontario
DTW
Detroit
$343 Roundtrip, found 11 hours ago
$343
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Wed, Dec 9 from Ontario to Detroit, returning Tue, Dec 15, priced at $343 found 11 hours ago
Alaska Airlines
Wed, Oct 21 - Sat, Nov 7
ONT
Ontario
DTW
Detroit
$343 Roundtrip, just found
$343
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Oct 21 from Ontario to Detroit, returning Sat, Nov 7, priced at $343 just found
Delta
Tue, Oct 13 - Sat, Oct 17
ONT
Ontario
DTW
Detroit
$383 Roundtrip, found 10 hours ago
$383
Roundtrip
found 10 hours ago
Select Delta flight, departing Tue, Oct 13 from Ontario to Detroit, returning Sat, Oct 17, priced at $383 found 10 hours ago
American Airlines
Tue, Jan 5 - Sat, Jan 9
ONT
Ontario
DTW
Detroit
$431 Roundtrip, found 22 hours ago
$431
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Tue, Jan 5 from Ontario to Detroit, returning Sat, Jan 9, priced at $431 found 22 hours ago

Alternative airports near Detroit

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Detroit Metropolitan Wayne County DTW. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $430
DTW
Detroit Metropolitan Wayne County
Cheapest
Average driving time to city center26 min
Flights from $430

Find the cheapest month to fly from Ontario (ONT) to Detroit (DTW)

February is typically the cheapest month to fly

From $148 - $352 per traveler.

Frequently asked questions

How much does a flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) cost?
You can find cheap one-way flights from $82 and cheap return flights from $163 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) with Expedia. One-way flights typically cost between $213 and $1141, and return flights often range between $408 and $1422. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
February is the cheapest month to fly from Ontario, CA (ONT) to Detroit, MI (DTW), with average round-trip fares around $398. This price is about 14% lower than the average fare throughout the year, likely due to lower travel demand during the winter months. Other budget-friendly months include August and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
Enter ONT to DTW and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
JetBlue Airways is one of the cheapest airlines offering connecting flights from Ontario, CA (ONT) to Detroit, MI (DTW), with round-trip tickets starting from around $306.20. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
The best time to fly from Ontario, CA (ONT) to Detroit, MI (DTW) is typically in February or September. February offers the lowest average price for a return flight at around $398, making it a budget-friendly option. September is also a great choice, as it balances moderate prices with good flight availability, allowing you to enjoy a pleasant travel experience.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
The earliest flight from Los Angeles - Ontario International Airport (ONT) to Detroit Metropolitan Wayne County Airport (DTW) usually departs at around 12:05 AM, operated by Frontier Airlines. This early departure can help you make the most of your time in Detroit. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
The most popular departure times for flights from Ontario (ONT) to Detroit (DTW) are in the early morning, from 6am to 9am. About 43% of passengers prefer this time window. Many major carriers, including American Airlines, Delta, and Southwest Airlines, offer flights during this window. This timing works well because it allows you to arrive in Detroit with ample time to enjoy your day.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
Flights from ONT to DTW with one stop typically take around 7 hours, covering approximately 1,930 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
You can fly first class between ONT and DTW. First class cabins are available on:

  • United Airlines
  • Delta Air Lines
  • American Airlines

How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Detroit from Los Angeles - Ontario Intl. (ONT)?
If you're planning to travel to Detroit from Los Angeles - Ontario Intl. (ONT), you can fly into Detroit Metropolitan Wayne County (DTW) Some flights may connect through major hubs like Denver Intl. (DEN), San Francisco Intl. (SFO), Portland Intl. (PDX) before reaching Detroit. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) Detroit Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Detroit, MI (DTW-Detroit Metropolitan Wayne County) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Detroit Metropolitan Wayne County
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$163
Distance
1929 mi

Book with confidence

Ontario Intl. Airport to Detroit Flights

The cheapest times to fly from Ontario Intl. Airport to Detroit

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario Intl. Airport to Detroit are during the month of October. You can find some of the cheapest flights from Ontario Intl. Airport to Detroit with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario Intl. Airport to Detroit

Sunday is one of the best days to book for cheap flights from Ontario Intl. Airport to Detroit: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario Intl. Airport to Detroit

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario Intl. Airport to Detroit in 2026. You can also book with separate airlines for your outbound and return journeys, from $82 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario Intl. Airport to Detroit flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario Intl. Airport to Detroit airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ontario Intl. Airport to Detroit Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia