On average, the least expensive day to fly to Perm from United States is on a Monday. momondo users have found tickets for Monday departures for as low as $544. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from United States to Perm on a Saturday will generally be more expensive and average around $1,904. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.