To save on the cost of your flight from Chattanooga to Illinois, book at least 38 days before your planned departure. Booking around this time can save you about 45% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $355 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $457.
Due to multiple factors, expect to potentially pay more when booking in November. For low rates, August can be a great choice for travel to Illinois. Flights to Illinois from Chattanooga in August are about $294 on average during August, but can be found for as low as $147.
When flying from Chattanooga to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
||$92||$347||No cancel fee||N/A|
||$134||$356||No cancel fee||71%|
||$265||$352||No cancel fee||69%|