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Cheap Flights from Denver to Illinois

Popular 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
$128
Cheap Flights from Denver to Illinois - from $128 Round trip from DEN to IL