$98 Find Cheap Flights from Decatur to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Decatur to Illinois departing on 7/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Decatur to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Decatur to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Decatur to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Decatur to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Decatur to Illinois

Wed, May 20 - Wed, May 27
United Airlines Logo
7:25 pm - 8:38 pm
DEC
-
ORD
1h 13mnonstop
United Airlines Logo
4:45 pm - 5:56 pm
ORD
-
DEC
1h 11mnonstop
$149United Airlines
Wed, May 6 - Sun, May 10
United Airlines Logo
9:42 am - 10:55 am
DEC
-
ORD
1h 13mnonstop
United Airlines Logo
7:45 am - 8:58 am
ORD
-
DEC
1h 13mnonstop
$159United Airlines
Sat, May 23 - Sun, May 24
United Airlines Logo
7:05 pm - 8:13 pm
DEC
-
ORD
1h 08mnonstop
United Airlines Logo
7:45 am - 8:57 am
ORD
-
DEC
1h 12mnonstop
$160United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
7:05 pm - 8:13 pm
DEC
-
ORD
1h 08mnonstop
United Airlines Logo
4:45 pm - 5:56 pm
ORD
-
DEC
1h 11mnonstop
$170United Airlines
Wed, May 6 - Sun, May 10
United Airlines Logo
9:42 am - 10:55 am
DEC
-
ORD
1h 13mnonstop
United Airlines Logo
4:50 pm - 5:58 pm
ORD
-
DEC
1h 08mnonstop
$174United Airlines
Mon, May 4 - Wed, May 6
United Airlines Logo
9:42 am - 10:55 am
DEC
-
ORD
1h 13mnonstop
United Airlines Logo
7:45 am - 8:58 am
ORD
-
DEC
1h 13mnonstop
$191United Airlines
Tue, May 5 - Thu, May 7
United Airlines Logo
7:25 pm - 8:38 pm
DEC
-
ORD
1h 13mnonstop
United Airlines Logo
7:45 am - 8:58 am
ORD
-
DEC
1h 13mnonstop
$241United Airlines
Booking Insights

KAYAK's insights & trends for Decatur to Illinois flights

Get data-powered insights and trends into flights from Decatur to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Decatur, Illinois to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Decatur, Illinois to Illinois departing in May.

What is the cheapest Decatur to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Decatur found in the last 72 hours was to Chicago, at $177 round-trip. The most popular route is from Decatur (DEC) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $177.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Decatur to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $349 on average. Morning departures are around 9% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is $438.

Good to know

Cheapest flight$98
Flight from Decatur to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Decatur to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Decatur to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Decatur to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Decatur to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Decatur to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Decatur to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Decatur to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Decatur to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Decatur to the following destinations at these prices or less: Chicago $278 one-way - $304 round-trip

Reviews of the top airline flying from Decatur to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Decatur to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Decatur to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9643 reviews
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
Airline reviews

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

6.0 GoodGuido, Apr 2026
BOI - ORD
Read more United Airlines reviews

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

Everything you need to know for your flight from Decatur to Illinois

Information on your arrival and departure airports