To save up to 27% on this flight, we recommend booking at least 31 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 $251 1-2 weeks out and tickets from $293 for flights departing within the next 72 hours.
Flights from Helena to Michigan lean towards being more expensive in March. Prices are generally better when you fly from Helena to Michigan in September, with the cheapest ticket starting at $146.