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$28+ Cheap flights from Illinois to Detroit (DTT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DTT
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Illinois to Detroit

Keep the following information in mind while searching for Illinois to Detroit flight deals. Data was last updated July 30, 2025.

Round-trip from

$60
(Priceline)

One-way from

$28
(Booking.com)

Popular in

February

Cheapest in

October

Average price

$357

Good round-trip deal

$202 or less

Good one-way deal

$150 or less
From Illinois to Detroit (DTT)
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One-way flight from Illinois to Detroit (DTT)
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Highest demand for flights based on searches. 25% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Illinois to Detroit (DTT).
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Price to beat on a one-way flight from Illinois to Detroit (DTT).
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Find flight deals from Illinois to Detroit

Cheapest flights from Illinois to Detroit
Explore the most affordable flight options available from Illinois to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Priceline deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1412:05 pmSTL - DTW
Nonstop1h 30mSpirit Airlines
Thu 9/2510:12 amDTW - STL
Nonstop1h 38mSpirit Airlines
Deal found 7/29$60
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/277:25 amMDW - DTW
1 stop4h 05mSouthwest
Wed 9/35:50 amDTW - MDW
2 stops8h 35mSouthwest
Deal found 7/28$116
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:15 amORD - DTW
Nonstop1h 15mDelta
Sun 8/3112:25 pmDTW - ORD
Nonstop1h 20mDelta
Deal found 7/28$121
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/309:31 amMDW - DTW
Nonstop1h 13mDelta
Sun 8/316:21 pmDTW - MDW
Nonstop1h 16mDelta
Deal found 7/28$121
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:02 pmORD - DTW
1 stop12h 56mSpirit Airlines
Sat 8/167:30 amDTW - ORD
1 stop9h 56mSpirit Airlines
Deal found 7/28$129
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/216:00 pmSTL - DTW
Nonstop1h 33mDelta
Sun 8/248:55 amDTW - STL
Nonstop1h 37mDelta
Deal found 7/28$139
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/82:55 pmORD - DTW
1 stop5h 35mSouthwest
Wed 9/106:15 amDTW - ORD
1 stop7h 30mSouthwest
Deal found 7/28$141
This Trip.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/182:30 pmSTL - DTW
Nonstop1h 30mMultiple Airlines
Tue 8/198:00 amDTW - STL
1 stop26h 11mMultiple Airlines
Deal found 7/30$150
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:45 amSTL - DTW
Nonstop1h 30mSouthwest
Mon 10/611:00 amDTW - STL
1 stop9h 00mSouthwest
Deal found 7/29$167
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/612:33 pmORD - DTW
1 stop4h 53mAmerican Airlines
Tue 9/169:36 amDTW - ORD
Nonstop1h 30mAmerican Airlines
Deal found 7/30$170
This Frontier deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/124:48 pmMDW - DTW
1 stop6h 58mFrontier
Fri 9/1910:54 amDTW - MDW
1 stop6h 06mFrontier
Deal found 7/28$177
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:46 pmORD - DTW
1 stop12h 01mFrontier
Sun 8/311:36 pmDTW - ORD
1 stop11h 25mFrontier
Deal found 7/30$178

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Detroit that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from Illinois to Detroit that are best for you.

Fly from

Illinois

Fly to

Detroit

Route

Depart

Return

Price

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sun 9/14

12:05 pm-2:35 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Thu 9/25

10:12 am-10:50 am

Nonstop1h 38m

$60

ChicagoDetroit

MDW - DTW

MDWDTW

Chicago Midway

Wed 8/27

7:25 am-12:30 pm

1 stop4h 05m

Detroit Metropolitan Wayne County

Wed 9/3

5:50 am-1:25 pm

2 stops8h 35m

$116

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Sat 8/30

7:15 am-9:30 am

Nonstop1h 15m

Detroit Metropolitan Wayne County

Sun 8/31

12:25 pm-12:45 pm

Nonstop1h 20m

$121

ChicagoDetroit

MDW - DTW

MDWDTW

Chicago Midway

Sat 8/30

6:17 pm-8:32 pm

Nonstop1h 15m

Detroit Metropolitan Wayne County

Sun 8/31

6:21 pm-6:37 pm

Nonstop1h 16m

$121

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Tue 8/12

6:02 pm-7:58 am

1 stop12h 56m

Detroit Metropolitan Wayne County

Sat 8/16

7:30 am-4:26 pm

1 stop9h 56m

$129

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 8/21

6:00 pm-8:33 pm

Nonstop1h 33m

Detroit Metropolitan Wayne County

Sun 8/24

8:55 am-9:32 am

Nonstop1h 37m

$139

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Mon 9/8

2:55 pm-9:30 pm

1 stop5h 35m

Detroit Metropolitan Wayne County

Wed 9/10

6:15 am-12:45 pm

1 stop7h 30m

$141

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 8/18

2:30 pm-5:00 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Tue 8/19

8:00 am-9:11 am

1 stop26h 11m

$150

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 10/2

7:45 am-10:15 am

Nonstop1h 30m

Detroit Metropolitan Wayne County

Mon 10/6

11:00 am-7:00 pm

1 stop9h 00m

$167

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Sat 9/6

12:33 pm-6:26 pm

1 stop4h 53m

Detroit Metropolitan Wayne County

Tue 9/16

9:36 am-10:06 am

Nonstop1h 30m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 48 results
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Best time to book a flight from Illinois to Detroit

Have a flexible travel schedule? Discover the best time to fly to Detroit from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Detroit

What is the cheapest month to book a flight from Illinois to Detroit?

Currently, April is the cheapest month in which you can book a flight from Illinois to Detroit (average of $257). Flying from Illinois to Detroit in March is currently the most expensive (average of $305). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to DTT?

Find hourly flight availability from Illinois to Detroit. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Detroit as you normally would.

Weekly flight availability from Illinois to Detroit

Explore weekly flight availability from Illinois to Detroit. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 30, 2025.

The most flights from USIL to DTT are scheduled on a Wednesday (92 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (38 on average).

Reviews of airlines servicing Detroit

Get insights into the airlines that provide service to Detroit. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Detroit. Reviews last updated July 30, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Illinois to Detroit have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Detroit. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Detroit from Illinois?

    Detroit All airports (DTT), located 0.6 mi from the city center, is the airport you fly into when you book flights from Illinois to Detroit.

  • What are the cheapest airlines to fly from Illinois to Detroit one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $28. Users have also found prices from $46 and $56 on Delta and Southwest, respectively.

  • What are the most popular routes from Illinois to Detroit?

    The most popular route from Illinois to Detroit is Chicago O'Hare Intl - Detroit Metropolitan Wayne County. You may also consider Chicago Midway - Detroit Metropolitan Wayne County or Lambert-St Louis - Detroit Metropolitan Wayne County.

  • What are the most reliable airlines from Illinois to Detroit?

    Consider GoJet (100%), Virgin Atlantic (82%) or Korean Air (82%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Detroit.

  • What are the cheapest flights from Illinois to Detroit?

    While on average a flight from Illinois to Detroit is generally $527, our data shows the cheapest flight currently is $75. When looking at the most popular route, (Chicago O'Hare Intl - Detroit Metropolitan Wayne County), you can expect to pay $91 for that flight.

  • Can I find deals for flights from Illinois to Detroit that include hotel bookings?

    Yes. In addition to deals on Illinois to Detroit flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Detroit?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Detroit.

  • Can I find deals for business class flights from Illinois to Detroit?

    Yes. Cheapflights offers flight deals from Illinois to Detroit by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Detroit?

    Currently, April is the cheapest month in which you can book a flight from Illinois to Detroit (average of $257). Flying from Illinois to Detroit in March is currently the most expensive (average of $305). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Detroit?

Book flights to Detroit if you plan to visit one of these locations
Roseville
Port Huron

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Alternative routes for Illinois to Detroit

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Illinois to Detroit

Discover the top 5 airlines that operate flights from Illinois to Detroit. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$37Average$70FlexibilityNo cancel feeOn-time65%
DeltaCheapest$91Average$237FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$97Average$406FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$97Average$458FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$118Average$257FlexibilityNo cancel feeOn-time63%

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