Flights Kostroma — Saint Petersburg is a popular route. The straight-line distance is 653 km. Flight time 1h 16m. Time difference +0h.
The minimum price for the next 3 months — from $79 (15.11.2026). The cheapest dates are highlighted in the calendar above.
The average ticket price — $79, ranging from $79 to $79. Book 1–3 months in advance to get the best deals.