To save up to 24% on this flight, we recommend booking at least 18 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Helena to Michigan from $195 1-2 weeks out and tickets from $259 for flights departing within the next 72 hours.
Flights from Helena to Michigan lean towards being more expensive in December. Prices are generally better when you fly from Helena to Michigan in April, with the cheapest ticket starting at $35.