To save up to 16% on this flight, we recommend booking at least 15 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Montana to Des Moines from $152 1-2 weeks out and tickets from $190 for flights departing within the next 72 hours.
Flights from Montana to Des Moines lean towards being more expensive in January. Prices are generally better when you fly from Montana to Des Moines in June, with the cheapest ticket starting at $102.