What is the cheapest airline that flies from Illinois to Decatur Arpt?

United Airlines is the most popular carrier operating from Illinois to Decatur Arpt

How many flights depart from Illinois to Decatur, Illinois on average per day?

As of September 2025, 1 flights take off from Illinois and land in Decatur, Illinois each day. The most common flight departure time for this route is 7:00AM, with 58% of daily flights taking off at noon.

How many flights depart from Illinois to Decatur, Illinois on average per week?

As of September 2025, there are 12 flights per week flying from Illinois to Decatur, Illinois. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

How long does it take to fly to Decatur, Illinois?

The flight from Illinois to Decatur, Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Chicago (a popular airport in Illinois) to Peoria, Illinois (the most popular airport in Decatur, Illinois), then the flight time is 7h 50m on average. If you fly from Moline (another popular airport in Illinois) to Peoria, Illinois, then the average flight time is 12h 52m.

When did momondo last update prices for flights from Illinois to Decatur Arpt Airport?

Prices for flights from Illinois to Decatur Arpt Airport are refreshed on a daily basis.

How old do you have to be to fly from Illinois to Decatur Arpt Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Decatur Arpt Airport.

What documentation or ID do you need to fly to Decatur Arpt Airport?

The required travel and health documents for your Decatur Arpt Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Decatur Arpt Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$93 Cheap Flights from Illinois to Decatur in 2025/26

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Find the cheapest flights from Illinois to Decatur

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

4:55 pm - 6:04 pmORD-DEC

1h 09mnonstop

6:55 pm - 8:10 pmDEC-ORD

1h 15mnonstop

$149United Airlines

Find Deal

Sun, Oct 5 - Sun, Oct 12

7:45 am - 8:51 amORD-DEC

1h 06mnonstop

7:08 pm - 8:19 pmDEC-ORD

1h 11mnonstop

$158United Airlines

Find Deal

Sat, Oct 25 - Sun, Oct 26

4:55 pm - 6:04 pmORD-DEC

1h 09mnonstop

6:55 pm - 8:10 pmDEC-ORD

1h 15mnonstop

$159United Airlines

Find Deal

Thu, Oct 9 - Sun, Oct 12

4:50 pm - 5:52 pmORD-DEC

1h 02mnonstop

7:08 pm - 8:19 pmDEC-ORD

1h 11mnonstop

$170United Airlines

Find Deal

Sat, Nov 22 - Sat, Nov 29

4:55 pm - 6:04 pmORD-DEC

1h 09mnonstop

9:38 am - 10:53 amDEC-ORD

1h 15mnonstop

$174United Airlines

Find Deal

Fri, Oct 3 - Mon, Oct 6

7:45 am - 8:51 amORD-DEC

1h 06mnonstop

6:55 pm - 8:10 pmDEC-ORD

1h 15mnonstop

$177United Airlines

Find Deal

Sat, Oct 4 - Sun, Oct 5

7:45 am - 8:51 amORD-DEC

1h 06mnonstop

9:38 am - 10:53 amDEC-ORD

1h 15mnonstop

$191United Airlines

Find Deal

Sun, Oct 5 - Thu, Oct 9

7:45 am - 8:51 amORD-DEC

1h 06mnonstop

9:38 am - 10:53 amDEC-ORD

1h 15mnonstop

$241United Airlines

Find Deal

Sun, Oct 5 - Wed, Oct 8

12:25 pm - 8:51 amSTL-DEC

20h 26m1 stop

9:38 am - 3:44 pmDEC-STL

6h 06m1 stop

$434United Airlines

Find Deal

Sat, Oct 4 - Tue, Oct 7

12:25 pm - 6:04 pmSTL-DEC

5h 39m1 stop

6:55 pm - 6:17 pmDEC-STL

23h 22m1 stop

$450United Airlines

Find Deal

Mon, Oct 6 - Fri, Oct 10

United Airlines flights from Illinois to Decatur, Illinois

Our best United Airlines deals on Illinois to Decatur, Illinois flight tickets

United Airlines

Oct 5

ORD4:55 pmChicago O'Hare Intl

1h 09m

DEC6:04 pmDecatur Arpt

Oct 12

DEC6:55 pmDecatur Arpt

1h 15m

ORD8:10 pmChicago O'Hare Intl

$149

Find similar

United Airlines

Oct 25

ORD7:45 amChicago O'Hare Intl

1h 06m

DEC8:51 amDecatur Arpt

Oct 26

DEC7:08 pmDecatur Arpt

1h 11m

ORD8:19 pmChicago O'Hare Intl

$158

Find similar

United Airlines

Oct 9

ORD4:55 pmChicago O'Hare Intl

1h 09m

DEC6:04 pmDecatur Arpt

Oct 12

DEC6:55 pmDecatur Arpt

1h 15m

ORD8:10 pmChicago O'Hare Intl

$159

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Decatur, Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sun 10/5

4:55 pm-6:04 pm

Nonstop1h 09m

Decatur Arpt

Sun 10/12

6:55 pm-8:10 pm

Nonstop1h 15m

$149

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sat 10/25

7:45 am-8:51 am

Nonstop1h 06m

Decatur Arpt

Sun 10/26

7:08 pm-8:19 pm

Nonstop1h 11m

$158

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Thu 10/9

4:55 pm-6:04 pm

Nonstop1h 09m

Decatur Arpt

Sun 10/12

6:55 pm-8:10 pm

Nonstop1h 15m

$159

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sat 11/22

4:50 pm-5:52 pm

Nonstop1h 02m

Decatur Arpt

Sat 11/29

7:08 pm-8:19 pm

Nonstop1h 11m

$170

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Fri 10/3

4:55 pm-6:04 pm

Nonstop1h 09m

Decatur Arpt

Mon 10/6

9:38 am-10:53 am

Nonstop1h 15m

$174

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sat 10/4

7:45 am-8:51 am

Nonstop1h 06m

Decatur Arpt

Sun 10/5

6:55 pm-8:10 pm

Nonstop1h 15m

$177

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sun 10/5

7:45 am-8:51 am

Nonstop1h 06m

Decatur Arpt

Thu 10/9

9:38 am-10:53 am

Nonstop1h 15m

$191

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sun 10/5

7:45 am-8:51 am

Nonstop1h 06m

Decatur Arpt

Wed 10/8

9:38 am-10:53 am

Nonstop1h 15m

$241

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Sat 10/4

12:25 pm-8:51 am

1 stop20h 26m

Decatur Arpt

Tue 10/7

9:38 am-3:44 pm

1 stop6h 06m

$434

St. LouisDecatur

STL - DEC

STLDEC

Lambert-St Louis

Mon 10/6

12:25 pm-6:04 pm

1 stop5h 39m

Decatur Arpt

Fri 10/10

6:55 pm-6:17 pm

1 stop23h 22m

$450

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Decatur, Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Decatur, Illinois?

The cheapest day to depart on your flight to Decatur, Illinois is on a Tuesday when prices can be found for as low as $158. This is often the case because there is less demand to fly during this day of the week. Flights from Illinois to Decatur, Illinois on a Saturday will generally be more expensive and average around $198. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Decatur, Illinois?

In the morning is the cheapest time of day to fly from Illinois to Decatur, Illinois when you can find flight prices for as low as $173. Flying to Decatur, Illinois in the morning is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Decatur, Illinois, so prices are often more expensive at around $198 per ticket.

What is the cheapest Illinois to Decatur Arpt flight route?

Fly from Chicago O'Hare Intl to Decatur Arpt for the best Illinois - Decatur Arpt flight prices

What cabin class options are available on Illinois to Decatur Arpt flights?

There is only 1 cabin class available to choose from on Illinois to Decatur Arpt flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Illinois to Decatur, Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Decatur, Illinois

Fastest flight time	1h 02m
Direct flights	Mon, Fri, Sat and Sun
Airports in Decatur, Illinois	1 airport

The fastest flight from Illinois to Decatur, Illinois takes 1h 02m

Direct flights go from Illinois to Decatur, Illinois on Monday, Friday, Saturday and Sunday. The only airline offering direct flights is United Airlines.

There is 1 airport near Decatur, Illinois: Decatur Arpt (DEC)

Search flight deals

When did momondo last update prices for flights from Illinois to Decatur Arpt Airport?
Prices for flights from Illinois to Decatur Arpt Airport are refreshed on a daily basis.
How old do you have to be to fly from Illinois to Decatur Arpt Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Decatur Arpt Airport.
What documentation or ID do you need to fly to Decatur Arpt Airport?
The required travel and health documents for your Decatur Arpt Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Decatur Arpt Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to Decatur, Illinois?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Decatur, Illinois is Canadair (Bombardier) Regional Jet, representing 41.67% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 16.67%, De Havilland (Bombardier) DHC-8-400 Dash 8Q at 16.67%, and Airbus A220-300 at 8.33%.

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Mattoon

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Why should I use momondo to find a flight deal from Illinois to Decatur?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Decatur. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to Decatur with flexible booking policies on momondo?

Yes. All flights to Decatur from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Decatur?

Once all potential Illinois to Decatur flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Decatur right now. Can momondo alert me if prices change?

Price alerts on flights to Decatur from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.