If you wish to fly with RusLine, then you would need to book a flight out of Naryan-Mar because the airline does not fly out of Los Angeles. If you still prefer to fly out of Los Angeles, then there are other airlines to choose from, such as Smartavia.
Joshkar-Ola, Moscow Vnukovo, and Tambov are the most popular airports RusLine uses on a routine basis throughout the year.