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$82+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DTT
Jul 20 — Jul 271
Mon 7/20
Mon 7/27
1 adult, Economy
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Cheap 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 June 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:57 pm
STL
-
DTW
1 stop6h 43m
Frontier
Thu 7/306:10 am
DTW
-
STL
1 stop12h 27m
Frontier
Deal found 6/18$167
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:33 pm
STL
-
DTW
1 stop5h 09m
Frontier
Sun 8/236:45 am
DTW
-
STL
1 stop11h 45m
Frontier
Deal found 6/17$168
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:57 pm
STL
-
DTW
1 stop19h 47m
Frontier
Mon 7/275:35 pm
DTW
-
STL
1 stop25h 02m
Frontier
Deal found 6/18$169
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Fri 7/174:57 pm
STL
-
DTW
1 stop6h 43m
Frontier
Fri 7/245:35 pm
DTW
-
STL
1 stop16h 22m
Frontier
Deal found 6/19$170
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Sat 8/14:57 pm
STL
-
DTW
1 stop19h 36m
Frontier
Wed 8/55:13 pm
DTW
-
STL
1 stop25h 24m
Frontier
Deal found 6/19$171
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:17 pm
STL
-
DTW
1 stop18h 22m
Frontier
Sun 9/66:00 am
DTW
-
STL
1 stop12h 22m
Frontier
Deal found 6/17$175
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
Sun 7/126:34 pm
STL
-
DTW
1 stop21h 06m
Frontier
Tue 7/142:56 pm
DTW
-
STL
1 stop19h 01m
Frontier
Deal found 6/16$182
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Fri 7/104:57 pm
STL
-
DTW
1 stop6h 43m
Frontier
Mon 7/135:35 pm
DTW
-
STL
1 stop25h 02m
Frontier
Deal found 6/14$187
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
Sat 7/114:57 pm
STL
-
DTW
1 stop6h 43m
Frontier
Wed 7/155:13 pm
DTW
-
STL
1 stop25h 24m
Frontier
Deal found 6/16$196
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Fri 7/174:57 pm
STL
-
DTW
1 stop6h 43m
Frontier
Sun 7/196:10 am
DTW
-
STL
1 stop12h 27m
Frontier
Deal found 6/14$199
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:30 am
ORD
-
DTW
1 stop9h 02m
JetBlue
Wed 10/216:00 am
DTW
-
ORD
1 stop6h 47m
JetBlue
Deal found 6/16$201
This Orbitz deal was found by Cheapflights users on 6/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:30 am
ORD
-
DTW
1 stop7h 09m
Multiple Airlines
Sat 10/36:00 am
DTW
-
ORD
1 stop6h 47m
Multiple Airlines
Deal found 6/19$206

Find flight deals from Illinois to Detroit

Keep the following information in mind while searching for Illinois to Detroit flight deals. Data was last updated June 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$167
(Kiwi.com)

One-way from

$82
(Trip.com)

Popular in

March

Cheapest in

August

Average price

$295

Good round-trip deal

$414 or less

Good one-way deal

$179 or less
Provider with most accurate pricing for Chicago (CHI)-Detroit (DTT) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Detroit (DTT) flights.
Search Deals
From Illinois to Detroit (DTT)
Search Deals
One-way flight from Illinois to Detroit (DTT)
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Detroit (DTT).
Search Deals
Price to beat on a one-way flight from Illinois to Detroit (DTT).
Search Deals

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 June 20, 2026.
Use the filters below to find and compare flights from Illinois to Detroit that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Fri 9/11

6:30 am-4:32 pm

1 stop9h 02m

Detroit Metropolitan Wayne County

Sun 9/13

6:00 am-11:47 am

1 stop6h 47m

$201

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 7/11

6:30 am-9:04 am

Nonstop1h 34m

Detroit Metropolitan Wayne County

Wed 7/15

12:28 pm-1:05 pm

Nonstop1h 37m

$209

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 7/11

10:15 am-12:45 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Wed 7/15

7:50 pm-10:30 pm

1 stop3h 40m

$219

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Tue 7/7

10:56 am-5:49 pm

1 stop5h 53m

Detroit Metropolitan Wayne County

Sat 7/11

1:50 pm-7:47 pm

1 stop6h 57m

$223

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 7/18

3:45 pm-11:50 pm

2 stops7h 05m

Detroit Metropolitan Wayne County

Sat 7/25

5:30 am-10:40 am

1 stop6h 10m

$234

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Tue 8/4

4:00 pm-6:38 pm

Nonstop1h 38m

Detroit Metropolitan Wayne County

Wed 8/5

7:05 am-7:42 am

Nonstop1h 37m

$243

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Wed 9/16

9:00 am-11:27 am

Nonstop1h 27m

Detroit Metropolitan Wayne County

Sat 10/3

2:02 pm-2:42 pm

Nonstop1h 40m

$243
Quickest round-trip

ChicagoDetroit

MDW - DTW

MDWDTW

Chicago Midway

Wed 7/22

12:55 pm-3:05 pm

Nonstop1h 10m

Detroit Metropolitan Wayne County

Wed 7/29

8:55 am-9:10 am

Nonstop1h 15m

$243

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Sat 8/8

3:00 pm-5:39 pm

Nonstop1h 39m

Detroit Metropolitan Wayne County

Tue 8/11

6:10 pm-6:43 pm

Nonstop1h 33m

$252

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Sat 8/8

7:00 am-9:27 am

Nonstop1h 27m

Detroit Metropolitan Wayne County

Mon 8/10

5:58 pm-6:29 pm

Nonstop1h 31m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Showing 1-10 of 60 resultsSorted by cheapest first
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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, August is the cheapest month in which you can book a flight from Illinois to Detroit (average of $48). Flying from Illinois to Detroit in March is currently the most expensive (average of $181). 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 June 20, 2026.

One of the essential ways to save on airfare from Illinois to Detroit is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 42% on airfare.

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 June 20, 2026.

The most flights from USIL to DTT are scheduled on a Thursday (91 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).

How much does it cost to fly round-trip from Illinois to Detroit?

How far ahead should I book a flight from Illinois to Detroit?

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Detroit. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest day to fly from Illinois to Detroit?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Detroit. Price data was last updated on June 13, 2026.

Travelers seeking maximum savings on their Illinois to Detroit flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

  • How long is the flight from Illinois to Detroit?

    Departing from Illinois to Detroit will take you 1h 30m. Airlines will cover a distance of 439 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $45. Users have also found prices from $46 and $48 on Delta and American Airlines, 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 Endeavor Airlines (94%), Finnair (92%) or Virgin Atlantic (86%) 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 $429, our data shows the cheapest flight currently is $102. When looking at the most popular route, (Chicago O'Hare Intl - Detroit Metropolitan Wayne County), you can expect to pay $201 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, August is the cheapest month in which you can book a flight from Illinois to Detroit (average of $48). Flying from Illinois to Detroit in March is currently the most expensive (average of $181). 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 June 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$91Average$328FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$97Average$367FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$121Average$250FlexibilityNo cancel feeOn-time71%
FrontierCheapest$144Average$178FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$157Average$397FlexibilityNo cancel feeOn-time69%

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