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$51+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$101
(Delta)

One-way from

$51
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$112

Good round-trip deal

$226 or less

Good one-way deal

$149 or less
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. 15% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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.
sáb. 10/411:00 amDTW - ORD
Nonstop1h 33mUnited Airlines
sáb. 10/112:25 pmORD - DTW
Nonstop1h 26mUnited Airlines
Deal found 9/10$101
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 10/1812:15 pmDTW - MDW
Nonstop1h 16mDelta
mar. 10/211:08 pmMDW - DTW
Nonstop1h 11mDelta
Deal found 9/11$101
This Delta deal was found by Cheapflights users on 9/9. 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.
sáb. 10/188:00 pmDTW - ORD
Nonstop1h 23mDelta
mié. 10/228:55 amORD - DTW
Nonstop1h 21mDelta
Deal found 9/9$108
This Southwest deal was found by Cheapflights users on 9/11. 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.
mar. 10/216:45 pmDTW - MDW
Nonstop1h 10mSouthwest
mar. 10/218:50 pmMDW - DTW
Nonstop1h 10mSouthwest
Deal found 9/11$108
This Delta deal was found by Cheapflights users on 9/11. 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.
mar. 9/308:25 amDTW - MDW
Nonstop1h 15mDelta
mié. 10/19:35 amMDW - DTW
Nonstop1h 10mDelta
Deal found 9/11$111
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/17:22 amDTW - MDW
1 stop12h 17mMultiple Airlines
lun. 11/31:37 pmMDW - DTW
1 stop17h 39mMultiple Airlines
Deal found 9/10$113
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 10/49:15 pmDTW - ORD
Nonstop1h 19mDelta
lun. 10/610:30 amORD - DTW
Nonstop1h 23mDelta
Deal found 9/11$115
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 10/412:15 pmDTW - MDW
Nonstop1h 13mDelta
lun. 10/69:35 amMDW - DTW
Nonstop1h 10mDelta
Deal found 9/11$115
This American Airlines deal was found by Cheapflights users on 9/9. 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.
sáb. 10/46:45 amDTW - ORD
Nonstop1h 33mAmerican Airlines
lun. 10/67:35 amORD - DTW
Nonstop1h 32mAmerican Airlines
Deal found 9/9$116
This Southwest deal was found by Cheapflights users on 9/10. 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.
sáb. 10/113:30 pmDTW - MDW
Nonstop1h 10mSouthwest
sáb. 10/117:20 pmMDW - DTW
Nonstop1h 10mSouthwest
Deal found 9/10$116
This United Airlines deal was found by Cheapflights users on 9/10. 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.
vie. 10/106:00 amDTW - ORD
Nonstop1h 30mUnited Airlines
sáb. 10/115:50 pmORD - DTW
Nonstop1h 36mUnited Airlines
Deal found 9/10$117
This Delta deal was found by Cheapflights users on 9/10. 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.
sáb. 10/48:25 amDTW - MDW
Nonstop1h 15mDelta
dom. 10/59:35 amMDW - DTW
Nonstop1h 10mDelta
Deal found 9/10$117

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 septiembre 11, 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

sáb. 10/18

3:50 pm-4:11 pm

Nonstop1h 21m

Chicago O'Hare Intl

mié. 10/22

8:55 am-11:16 am

Nonstop1h 21m

$101

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

sáb. 10/4

6:00 am-6:30 am

Nonstop1h 30m

Chicago O'Hare Intl

mar. 10/7

5:50 pm-8:26 pm

Nonstop1h 36m

$101

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

sáb. 10/4

9:15 pm-9:34 pm

Nonstop1h 19m

Chicago O'Hare Intl

sáb. 10/11

10:30 am-12:53 pm

Nonstop1h 23m

$101

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

sáb. 10/4

11:00 am-11:33 am

Nonstop1h 33m

Chicago O'Hare Intl

sáb. 10/11

2:25 pm-4:51 pm

Nonstop1h 26m

$101

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

mar. 10/14

6:40 am-6:50 am

Nonstop1h 10m

Chicago Midway

mar. 10/14

8:50 pm-11:00 pm

Nonstop1h 10m

$114

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

sáb. 10/18

6:20 pm-6:30 pm

Nonstop1h 10m

Chicago Midway

lun. 10/20

5:30 pm-7:35 pm

Nonstop1h 05m

$115

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

jue. 10/30

8:00 pm-8:23 pm

Nonstop1h 23m

Chicago O'Hare Intl

sáb. 11/1

7:10 am-9:29 am

Nonstop1h 19m

$115

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

sáb. 10/4

9:15 pm-9:34 pm

Nonstop1h 19m

Chicago O'Hare Intl

lun. 10/6

10:30 am-12:53 pm

Nonstop1h 23m

$115

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

mié. 10/15

7:30 am-7:50 am

Nonstop1h 20m

Chicago O'Hare Intl

jue. 10/23

7:10 am-9:29 am

Nonstop1h 19m

$115

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

sáb. 10/4

12:15 pm-12:28 pm

Nonstop1h 13m

Chicago Midway

lun. 10/6

9:35 am-11:45 am

Nonstop1h 10m

$115

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 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 septiembre 11, 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 septiembre 11, 2025.

The most flights from DTT to USIL are scheduled on a Thursday (79 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 on average).

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 septiembre 11, 2025.
Read through reviews of airlines operating flights from Detroit to Illinois, such as Southwest, Delta, and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Detroit to Illinois?

    Airlines like Delta, United Airlines, and Southwest fly from Detroit to Illinois in about 1h 10m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 227 mi. All flights are typically nonstop.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $51. United Airlines flights start at $51 while deals on Southwest start at $51 one-way.

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

    While some choose either Detroit Metropolitan Wayne County - Chicago Midway or Detroit Metropolitan Wayne County - Lambert-St Louis, 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: SWISS (82%), Republic Airways (82%), Copa Airlines( 81%).

  • What are the cheapest flights from Detroit to Illinois?

    On average you can expect to pay $1,225 for a flight from Detroit to Illinois. The cheapest flight overall is $58 while the most popular route, (Detroit Metropolitan Wayne County - Chicago O'Hare Intl) is currently priced at $101.

  • 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$91FlexibilityNo cancel feeOn-time65%
DeltaCheapest$96Average$247FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$97Average$397FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$97Average$275FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$102Average$433FlexibilityNo cancel feeOn-time71%

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