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$54+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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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 December 18, 2024.

Round-trip from

$119
(Frontier)

One-way from

$54
(Frontier)
From Detroit (DTT) to Illinois
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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 December 18, 2024.

This American Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/318:19 amDTW - ORD
Nonstop1h 40mAmerican Airlines
Tue 2/188:55 pmORD - DTW
Nonstop1h 15mAmerican Airlines
Deal found 12/17$175
This CheapOair deal was found by Cheapflights users on 12/17. 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 12/3110:44 amDTW - ORD
1 stop11h 05mSpirit Airlines
Tue 2/181:39 pmORD - DTW
1 stop13h 35mSpirit Airlines
Deal found 12/17$208
This Southwest deal was found by Cheapflights users on 12/17. 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 12/258:40 amDTW - MDW
Nonstop1h 20mSouthwest
Wed 1/16:50 pmMDW - DTW
Nonstop1h 10mSouthwest
Deal found 12/17$214
This Delta deal was found by Cheapflights users on 12/17. 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 12/316:15 pmDTW - ORD
Nonstop1h 37mDelta
Tue 2/2510:30 amORD - DTW
Nonstop1h 30mDelta
Deal found 12/17$217
This Delta deal was found by Cheapflights users on 12/17. 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 12/318:30 amDTW - MDW
Nonstop1h 20mDelta
Tue 2/259:33 amMDW - DTW
Nonstop1h 12mDelta
Deal found 12/17$217
This Frontier deal was found by Cheapflights users on 12/17. 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.
Mon 12/234:11 pmDTW - MDW
1 stop8h 03mFrontier
Fri 1/101:06 pmMDW - DTW
1 stop6h 46mFrontier
Deal found 12/17$220
This Southwest deal was found by Cheapflights users on 12/17. 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 12/252:20 pmDTW - ORD
1 stop8h 10mSouthwest
Wed 1/15:45 amORD - DTW
1 stop6h 10mSouthwest
Deal found 12/17$232
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/257:15 amDTW - ORD
Nonstop1h 43mUnited Airlines
Tue 1/79:06 pmORD - DTW
Nonstop1h 33mUnited Airlines
Deal found 12/17$235
This Frontier deal was found by Cheapflights users on 12/17. 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.
Mon 12/234:11 pmDTW - ORD
1 stop7h 01mFrontier
Fri 1/107:25 amORD - DTW
1 stop11h 43mFrontier
Deal found 12/17$270
This Delta deal was found by Cheapflights users on 12/17. 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 12/314:15 pmDTW - STL
Nonstop1h 44mDelta
Wed 1/82:05 pmSTL - DTW
Nonstop1h 30mDelta
Deal found 12/17$328
This Frontier deal was found by Cheapflights users on 12/17. 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.
Tue 12/2410:20 pmDTW - STL
1 stop10h 53mFrontier
Mon 12/305:45 pmSTL - DTW
1 stop13h 10mFrontier
Deal found 12/17$338
This Mytrip deal was found by Cheapflights users on 12/18. 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.
Mon 12/2310:44 pmDTW - ORD
1 stop11h 19mMultiple Airlines
Wed 12/2510:00 amORD - DTW
1 stop9h 26mMultiple Airlines
Deal found 12/18$343

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 1/9

8:57 am-11:27 pm

1 stop15h 30m

Lambert-St Louis

Sun 1/12

8:12 am-7:55 am

1 stop22h 43m

$119

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Sat 2/1

3:41 pm-5:55 am

1 stop15h 14m

Chicago O'Hare Intl

Thu 2/6

11:10 am-11:59 pm

1 stop11h 49m

$125

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Mon 1/6

4:11 pm-10:12 pm

1 stop7h 01m

Chicago O'Hare Intl

Mon 1/13

7:50 am-8:08 pm

1 stop11h 18m

$128

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Fri 1/31

12:48 pm-11:34 pm

1 stop11h 46m

Chicago Midway

Fri 2/7

1:04 pm-9:17 pm

1 stop7h 13m

$128

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Wed 1/22

8:14 pm-5:31 am

1 stop10h 17m

Chicago O'Hare Intl

Sun 1/26

4:18 pm-7:57 am

1 stop14h 39m

$136

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Tue 1/14

12:26 pm-12:55 pm

Nonstop1h 29m

Chicago O'Hare Intl

Wed 1/15

6:45 am-9:18 am

Nonstop1h 33m

$137

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Wed 1/15

8:25 am-8:54 am

Nonstop1h 29m

Chicago Midway

Wed 1/22

2:08 pm-4:25 pm

Nonstop1h 17m

$137

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Tue 1/14

4:35 pm-4:50 pm

Nonstop1h 15m

Chicago Midway

Tue 1/21

10:10 am-12:20 pm

Nonstop1h 10m

$153

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Wed 1/1

11:23 am-11:48 am

Nonstop1h 25m

Chicago O'Hare Intl

Wed 2/5

1:16 pm-3:41 pm

Nonstop1h 25m

$175

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 1/7

6:14 am-3:21 pm

1 stop10h 07m

Lambert-St Louis

Sat 1/11

5:05 pm-7:55 am

1 stop13h 50m

$190

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 51 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.

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, September is the cheapest month in which you can book a flight from Detroit to Illinois (average of $232). Flying from Detroit to Illinois in June is currently the most expensive (average of $308). 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 December 18, 2024.

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.

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 December 18, 2024.
Read through reviews of airlines operating flights from Detroit to Illinois, such as Delta, United Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
3,279 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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 Frontier, which is currently one of the cheapest options available, starting at $54. Spirit Airlines flights start at $64 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: Austrian Airlines (95%), Aeromexico (92%), ANA( 90%).

  • What are the cheapest flights from Detroit to Illinois?

    On average you can expect to pay $1,350 for a flight from Detroit to Illinois. The cheapest flight overall is $108 while the most popular route, (Detroit Metropolitan Wayne County - Chicago O'Hare Intl) is currently priced at $115.

  • 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, September is the cheapest month in which you can book a flight from Detroit to Illinois (average of $232). Flying from Detroit to Illinois in June is currently the most expensive (average of $308). 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.

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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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$81FlexibilityNo cancel feeOn-time65%
DeltaCheapest$96Average$236FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$96Average$386FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$101Average$422FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$128Average$222FlexibilityNo cancel feeOn-time63%
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