HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$50+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Detroit to Illinois with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Detroit to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$116
(FlightHub)

One-way from

$50
(Mytrip)

Popular in

December

Cheapest in

October

Average price

$257

Good round-trip deal

$411 or less

Good one-way deal

$201 or less
Provider with most accurate pricing for Detroit (DTT)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-Chicago (CHI) flights.
Search Deals
From Detroit (DTT) to Illinois
Search Deals
One-way flight from Detroit (DTT) to Illinois
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2025
Search Deals
Price to beat on a round-trip flight from Detroit (DTT) to Illinois.
Search Deals
Price to beat on a one-way flight from Detroit (DTT) to Illinois.
Search Deals

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 January 30, 2025.

This FlightHub deal was found by Cheapflights users on 1/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:48 pmDTW - ORD
1 stop12h 47mMultiple Airlines
Mon 5/56:20 amORD - DTW
1 stop7h 27mMultiple Airlines
Deal found 1/30$124
This CheapOair deal was found by Cheapflights users on 1/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/259:40 pmDTW - ORD
1 stop14h 00mSpirit Airlines
Fri 3/76:45 amORD - DTW
1 stop8h 31mSpirit Airlines
Deal found 1/29$126
This Frontier deal was found by Cheapflights users on 1/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/202:12 pmDTW - MDW
1 stop9h 34mFrontier
Mon 2/2412:43 pmMDW - DTW
1 stop18h 19mFrontier
Deal found 1/29$130
This KAYAK deal was found by Cheapflights users on 1/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/38:25 amDTW - MDW
Nonstop1h 26mDelta
Mon 3/32:08 pmMDW - DTW
Nonstop1h 15mDelta
Deal found 1/29$135
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/208:20 pmDTW - ORD
Nonstop1h 33mDelta
Mon 2/2410:30 amORD - DTW
Nonstop1h 30mDelta
Deal found 1/30$137
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Thu 2/206:30 amDTW - ORD
Nonstop1h 41mAmerican Airlines
Mon 2/248:55 pmORD - DTW
Nonstop1h 18mAmerican Airlines
Deal found 1/30$138
This Frontier deal was found by Cheapflights users on 1/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/139:26 pmDTW - ORD
1 stop13h 01mFrontier
Sun 2/165:05 amORD - DTW
1 stop6h 47mFrontier
Deal found 1/29$140
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/207:25 pmDTW - MDW
Nonstop1h 10mSouthwest
Mon 2/246:00 amMDW - DTW
1 stop3h 55mSouthwest
Deal found 1/30$147
This Mytrip deal was found by Cheapflights users on 1/28. 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.
Fri 2/213:35 pmDTW - STL
1 stop18h 41mFrontier
Tue 2/255:20 pmSTL - DTW
1 stop13h 42mFrontier
Deal found 1/28$148
This United Airlines deal was found by Cheapflights users on 1/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/155:50 pmDTW - ORD
Nonstop1h 30mUnited Airlines
Sat 3/15:50 pmORD - DTW
Nonstop1h 25mUnited Airlines
Deal found 1/29$190
This FlightHub deal was found by Cheapflights users on 1/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/205:55 amDTW - STL
1 stop9h 47mMultiple Airlines
Mon 2/245:20 pmSTL - DTW
1 stop13h 42mMultiple Airlines
Deal found 1/30$217
This Southwest deal was found by Cheapflights users on 1/29. 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.
Mon 3/36:50 pmDTW - ORD
1 stop4h 30mSouthwest
Fri 3/77:00 amORD - DTW
1 stop4h 25mSouthwest
Deal found 1/29$225

Find flights from Detroit to Illinois within your budget

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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Tue 2/25

6:25 am-12:37 pm

1 stop7h 12m

Chicago O'Hare Intl

Wed 2/26

7:07 am-6:39 pm

1 stop10h 32m

$116

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Sat 5/3

8:48 pm-8:35 am

1 stop12h 47m

Chicago O'Hare Intl

Mon 5/5

6:20 am-2:47 pm

1 stop7h 27m

$124

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 2/13

9:26 pm-9:27 am

1 stop13h 01m

Chicago O'Hare Intl

Sat 2/15

8:44 pm-10:38 am

1 stop12h 54m

$130

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Tue 2/25

3:35 pm-12:17 am

1 stop9h 42m

Chicago Midway

Wed 2/26

8:12 am-2:52 pm

1 stop5h 40m

$130

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 2/20

8:40 am-9:16 am

Nonstop1h 36m

Chicago O'Hare Intl

Mon 2/24

6:45 am-9:18 am

Nonstop1h 33m

$137

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Thu 2/20

5:50 pm-6:11 pm

Nonstop1h 21m

Chicago Midway

Mon 2/24

6:28 pm-8:47 pm

Nonstop1h 19m

$137

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 2/20

6:30 am-7:11 am

Nonstop1h 41m

Chicago O'Hare Intl

Mon 2/24

8:55 pm-11:13 pm

Nonstop1h 18m

$138

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Thu 2/20

1:50 pm-2:00 pm

Nonstop1h 10m

Chicago Midway

Mon 2/24

6:00 am-10:55 am

1 stop3h 55m

$147

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 2/21

3:35 pm-9:16 am

1 stop18h 41m

Lambert-St Louis

Tue 2/25

5:20 pm-8:02 am

1 stop13h 42m

$148

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Sat 2/15

5:50 pm-6:20 pm

Nonstop1h 30m

Chicago O'Hare Intl

Sat 3/1

5:50 pm-8:15 pm

Nonstop1h 25m

$190

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 55 results
1
2
3
...
6

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.

Travel insights for flights from Detroit to Illinois

Get recent, data-driven insights about flights from Detroit to Illinois including ideal travel times, pricing trends, and more.

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 $325). 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 January 30, 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 January 30, 2025.

The most flights from DTT to USIL are scheduled on a Wednesday (68 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 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 January 30, 2025.
Read through reviews of airlines operating flights from Detroit to Illinois, such as Southwest, Delta and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,454 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,156 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,913 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Crew

8.7

Boarding

8.2

Food

7.1

Comfort

8.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 $50. Frontier flights start at $55 while deals on Delta start at $69 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: KLM (86%), SWISS (85%), Emirates( 83%).

  • What are the cheapest flights from Detroit to Illinois?

    On average you can expect to pay $1,180 for a flight from Detroit to Illinois. The cheapest flight overall is $119 while the most popular route, (Detroit Metropolitan Wayne County - Chicago O'Hare Intl) is currently priced at $116.

  • 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 $325). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Detroit to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Sky Harbor Intl flights
O'Hare Intl to John F Kennedy Intl flights
Detroit to Orlando flights
O'Hare Intl to Fort Lauderdale flights
Detroit to Fort Lauderdale flights
O'Hare Intl to Orlando flights
O'Hare Intl to Miami flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to Denver flights
Detroit to Las Vegas flights
O'Hare Intl to Seattle flights
Detroit to Miami flights
O'Hare Intl to LaGuardia flights
Midway to Sky Harbor Intl flights
O'Hare Intl to Tampa flights
Midway to Las Vegas flights
O'Hare Intl to San Francisco flights
Detroit to Sky Harbor Intl flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Newark flights
Midway to Orlando flights
O'Hare Intl to Boston flights
O'Hare Intl to New Orleans flights
Midway to Miami flights
Midway to Dallas/Fort Worth flights
Detroit to Tampa flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Atlanta flights
O'Hare Intl to Austin flights
Midway to Los Angeles flights
O'Hare Intl to West Palm Beach flights
O'Hare Intl to San Diego flights
Midway to Newark flights
Detroit to John F Kennedy Intl flights
Detroit to Fort Myers flights
O'Hare Intl to Nashville flights
O'Hare Intl to Honolulu flights
Midway to Hobby flights
Midway to Fort Lauderdale flights
O'Hare Intl to Dulles Intl flights
Detroit to Denver flights
O'Hare Intl to Salt Lake City flights
Midway to Atlanta flights
Midway to John F Kennedy Intl flights
O'Hare Intl to Reagan-National flights
Detroit to Seattle flights
O'Hare Intl to Santa Ana flights
O'Hare Intl to Sarasota flights
Midway to Tampa flights

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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$81FlexibilityNo cancel feeOn-time65%
DeltaCheapest$96Average$233FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$96Average$387FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$105Average$427FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$128Average$225FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.