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Cheap Flights from Denver to Illinois

Did You Know?

The shortest flight from Denver, CO to Illinois is 749 miles.
There are 43 carriers flying into Illinois.
The most popular destination from Denver, CO is Salt Lake International.
There are 613 direct flights from Denver to Illinois.
Minneapolis-St Paul, MN is the most popular connecting city from Denver, CO to Illinois.
There are 104 connecting cities from Denver, CO to Illinois.
The longest flight from Denver, CO to Illinois is 892 miles.
Minneapolis-St Paul, MN has the most direct flights to Illinois.

Cheap Domestic Flights from Denver - DEN

Flights
Airline
Lowest Price
Frontier, Spirit, United, Alaska, Delta, US Airways, American, AirTran
$125
US Airways, American, Delta, United
$364
Delta, Frontier, American
$145
American, Delta, United
$366
American, United
$289
American
$291
Cheap Flights from Denver to Illinois - from $125 Round trip from DEN to IL