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$58+ Cheap flights from Detroit (DTT) to Illinois

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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Detroit to Illinois

Keep the following information in mind while searching for Detroit to Illinois flight deals. Data was last updated April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$128
(CheapOair)

One-way from

$58
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$186

Good round-trip deal

$279 or less

Good one-way deal

$156 or less
Provider with most accurate pricing for Detroit (DTT)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Detroit (DTT)-Chicago (CHI) flights.
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From Detroit (DTT) to Illinois
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One-way flight from Detroit (DTT) to Illinois
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Highest demand for flights based on searches. 20% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Detroit (DTT) to Illinois.
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Price to beat on a one-way flight from Detroit (DTT) to Illinois.
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Find flight deals from Detroit to Illinois

Cheapest flights from Detroit to Illinois
Explore the most affordable flight options available from Detroit to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/101:20 pmDTW - ORD
1 stop7h 43mSpirit Airlines
Fri 6/131:34 pmORD - DTW
1 stop7h 45mSpirit Airlines
Deal found 4/28$128
This Frontier deal was found by Cheapflights users on 4/28. 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.
Sat 5/244:30 pmDTW - MDW
1 stop6h 32mFrontier
Tue 5/272:44 pmMDW - DTW
1 stop9h 00mFrontier
Deal found 4/28$162
This Mytrip deal was found by Cheapflights users on 4/28. 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 6/177:15 amDTW - ORD
1 stop17h 28mFrontier
Tue 6/245:01 amORD - DTW
1 stop5h 22mFrontier
Deal found 4/28$164
This Delta deal was found by Cheapflights users on 4/28. 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 5/249:00 amDTW - ORD
Nonstop1h 18mDelta
Sun 5/257:10 amORD - DTW
Nonstop1h 19mDelta
Deal found 4/28$179
This Delta deal was found by Cheapflights users on 4/28. 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.
Sun 5/2512:15 pmDTW - MDW
Nonstop1h 13mDelta
Sun 5/256:25 pmMDW - DTW
Nonstop1h 14mDelta
Deal found 4/28$179
This Southwest deal was found by Cheapflights users on 4/26. 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.
Sun 5/256:00 pmDTW - MDW
Nonstop1h 10mSouthwest
Wed 5/288:15 amMDW - DTW
1 stop6h 05mSouthwest
Deal found 4/26$189
This Southwest deal was found by Cheapflights users on 4/28. 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.
Tue 6/247:00 amDTW - STL
Nonstop1h 35mSouthwest
Fri 6/274:40 pmSTL - DTW
2 stops7h 25mSouthwest
Deal found 4/28$214
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/248:25 amDTW - ORD
Nonstop1h 40mAmerican Airlines
Tue 5/278:05 amORD - DTW
1 stop7h 21mAmerican Airlines
Deal found 4/28$215
This Delta deal was found by Cheapflights users on 4/28. 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.
Tue 5/204:10 pmDTW - STL
Nonstop1h 37mDelta
Sun 5/256:45 amSTL - DTW
Nonstop1h 32mDelta
Deal found 4/28$217
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:16 pmDTW - STL
1 stop5h 10mAmerican Airlines
Sat 5/316:47 pmSTL - DTW
1 stop4h 24mAmerican Airlines
Deal found 4/28$219
This Booking.com deal was found by Cheapflights users on 4/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/92:28 pmDTW - STL
1 stop20h 31mFrontier
Sun 5/115:45 pmSTL - DTW
1 stop23h 15mFrontier
Deal found 4/27$220
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/106:00 amDTW - ORD
Nonstop1h 30mUnited Airlines
Wed 7/162:45 pmORD - DTW
Nonstop1h 28mUnited Airlines
Deal found 4/28$231

Cheapflights Fare Finder

Customize your flight search to find flights from Detroit to Illinois 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 April 29, 2025.
Use the filters below to find and compare flights from Detroit to Illinois that are best for you.

Fly from

Detroit

Fly to

Illinois

Route

Depart

Return

Price

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Tue 6/10

1:20 pm-8:03 pm

1 stop7h 43m

Chicago O'Hare Intl

Fri 6/13

1:34 pm-10:19 pm

1 stop7h 45m

$128

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sat 5/24

4:30 pm-10:02 pm

1 stop6h 32m

Chicago Midway

Tue 5/27

2:44 pm-12:44 am

1 stop9h 00m

$162

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Tue 6/17

7:15 am-11:43 pm

1 stop17h 28m

Chicago O'Hare Intl

Tue 6/24

5:01 am-11:23 am

1 stop5h 22m

$164

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Sat 5/24

9:00 am-9:18 am

Nonstop1h 18m

Chicago O'Hare Intl

Sun 5/25

7:10 am-9:29 am

Nonstop1h 19m

$179

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sun 5/25

12:15 pm-12:28 pm

Nonstop1h 13m

Chicago Midway

Sun 5/25

6:25 pm-8:39 pm

Nonstop1h 14m

$179

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sun 5/25

6:00 pm-6:10 pm

Nonstop1h 10m

Chicago Midway

Wed 5/28

8:15 am-3:20 pm

1 stop6h 05m

$189

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 6/24

7:00 am-7:35 am

Nonstop1h 35m

Lambert-St Louis

Fri 6/27

4:40 pm-1:05 am

2 stops7h 25m

$214

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Sat 5/24

8:25 am-9:05 am

Nonstop1h 40m

Chicago O'Hare Intl

Tue 5/27

8:05 am-4:26 pm

1 stop7h 21m

$215

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 5/20

4:10 pm-4:47 pm

Nonstop1h 37m

Lambert-St Louis

Sun 5/25

6:45 am-9:17 am

Nonstop1h 32m

$217

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 5/28

5:16 pm-9:26 pm

1 stop5h 10m

Lambert-St Louis

Sat 5/31

6:47 pm-12:11 am

1 stop4h 24m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 49 results
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Best time to book a flight from Detroit to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Detroit 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 Detroit to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Detroit to Illinois (average of $245). Flying from Detroit to Illinois in March is currently the most expensive (average of $321). 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 DTT to IL?

Find hourly flight availability from Detroit to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

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

Weekly flight availability from Detroit to Illinois

Explore weekly flight availability from Detroit to Illinois. 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 April 29, 2025.

The most flights from DTT to USIL are scheduled on a Wednesday (94 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (52 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated April 29, 2025.
Read through reviews of airlines operating flights from Detroit to Illinois, such as Southwest, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,292 reviews

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,292 reviews
Southwest
8.0
Very good
4,292 reviews

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,929 reviews
Southwest
8.0
Very good
4,292 reviews

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,292 reviews

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
JetBlue
7.3
Good
2,922 reviews
Southwest
8.0
Very good
4,292 reviews

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,292 reviews

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

Find useful and relevant information for your journey from Detroit to Illinois. 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 from for flights from Detroit to Illinois?

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

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $58. Frontier flights start at $81 while deals on United Airlines start at $90 one-way.

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

    While some choose either Detroit Metropolitan Wayne County - Lambert-St Louis or Detroit Metropolitan Wayne County - Chicago Midway, Detroit Metropolitan Wayne County - Chicago O'Hare Intl is the most popular route from Detroit to Illinois.

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

    Before booking your flight to Illinois from Detroit, check out the most reliable airlines to get you to your destination on time: Copa Airlines (92%), GoJet (90%), Republic Airways( 88%).

  • What are the cheapest flights from Detroit to Illinois?

    On average you can expect to pay $796 for a flight from Detroit to Illinois. The cheapest flight overall is $106 while the most popular route, (Detroit Metropolitan Wayne County - Chicago O'Hare Intl) is currently priced at $150.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Detroit to Illinois 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 Detroit to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Detroit to Illinois (average of $245). Flying from Detroit to Illinois in March is currently the most expensive (average of $321). 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

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Alternative routes for Detroit to Illinois

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

Discover the top 5 airlines that operate flights from Detroit to Illinois. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$81FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$97Average$381FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$97Average$445FlexibilityNo cancel feeOn-time71%
DeltaCheapest$97Average$243FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$108Average$220FlexibilityNo cancel feeOn-time63%

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