To save up to 70% on this flight, we recommend booking at least 52 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Casper to USA from $365 1-2 weeks out and tickets from $503 for flights departing within the next 72 hours.
The best pricing can be found in the month of February. Prices to USA from Casper average $289. You can even find prices in February for less than $289, as users have found deals to USA from as low as $197. The month of December appears to be one of the more expensive times to travel to USA from Casper. Flying in the targeted month can save you up to 36%.