To save on the cost of your flight from Montana to Chicago, book at least 20 days before your planned departure. Booking around this time can save you about 48% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $213 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $293.
August can be a great time to fly to Chicago from Montana with a flight ticket averaging about $182. Cheapflights users have found deals in the month of August for as cheap as $64. The most expensive prices can be found in the month of December.
The chart below displays the airlines Cheapflights users traveling from Montana to Chicago choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
||$130||$253||No cancel fee||62%|
||$139||$328||No cancel fee||75%|
||$150||$404||No cancel fee||71%|
||$164||$431||No cancel fee||69%|
||$142||$465||No cancel fee||N/A|