On average, the least expensive day to fly to Castlegar from Canada is on a Saturday. momondo users have found tickets for Saturday departures for as low as 591 C$. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around 804 C$. These prices are subject to change though, so be sure to set up a Price Alert for flights to Castlegar.