Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Hawaii to Rapid City as you normally would.
The best pricing can be found in the month of July. Prices to Rapid City from Hawaii average $835. You can even find prices in July for less than $835, as users have found deals to Rapid City from as low as $580. The month of September appears to be one of the more expensive times to travel to Rapid City from Hawaii. Flying in the targeted month can save you up to 119%.