Aleksandr Mikhajlov

Sanya Grigoryev

Olga Zabotkina

Katya Tatarinova

Анатолий Адоскин

Valya Zhukov

Евгений Лебедев

Romashov

Boris Belyayev

Sanya in childhood

Lyudmila Bezuglaya

Katya in childhood

Борис Аракелов

Romashka in childhood

Eduard Kuznetsov

Valya in childhood

Inna Kondratyeva

Mariya Vasilyevna

Леонид Галлис

Nikolai Antonovich

Бруно Фрейндлих

Korablyov

Татьяна Пельтцер

Nina Kapitonovna

Yelena Maksimova

aunt Dasha

Nina Drobysheva

Sasha

Михаил Ладыгин

Navigator

Константин Адашевский

professor

Lyudmila Lyulko

Katya's friend

Людмила Макарова

Katya's friend

Борис Коковкин

colonel

Всеволод Кузнецов

pilot (uncredited)

Лидия Федосеева-Шукшина

Zhukov's assistant (uncredited)