It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
The best pricing can be found in the month of October. Prices to Seattle from Casper average $433. You can even find prices in October for less than $433, as users have found deals to Seattle from as low as $206. The month of June appears to be one of the more expensive times to travel to Seattle from Casper. Flying in the targeted month can save you up to 53%.
It’s typically best to fly out from Casper to Seattle in the afternoon. Doing so could potentially save you 27% on the flight price compared to flying at noon, which is usually more expensive.