Users have found that booking a flight from Illinois to Missoula at least 35 days early can save you up to 46% on average compared to booking a flight this week. If booking 35 days before your flight isn’t an option for you, users have found flights from Illinois to Missoula for as little as $219 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $262 for flights departing within the next 3 days.
August can be a great time to fly to Missoula from Illinois with a flight ticket averaging about $213. Cheapflights users have found deals in the month of August for as cheap as $88. The most expensive prices can be found in the month of December.