Some Russians are rushing to leave the country after President Vladimir Putin ordered a partial mobilization of reservists for military operations in Ukraine.
One of their destinations is the former Soviet republic of Armenia where Russians can travel without a visa. Armenia is also a member of the Russian-led military alliance.
A Russian man and his son arrived at an airport in the Armenian capital of Yerevan on Wednesday.
The son said this is an unscheduled visit. He said he is 17 years old, and he hasn't got a letter from the recruitment office yet.
He said he left the country as he thinks he could be drafted because he is studying online.
His father said they didn't panic because they had imagined a scenario like this. He said the tickets didn't cost too much as he was quick, and he and his son got through the border without any problems.
On the website of Turkish Airlines as of 11 a.m. on Thursday, Moscow time, direct flights from the Russian capital to Istanbul were fully booked until Tuesday. The airline operates five flights a day between the two cities.
Turkey is a popular destination for Russian nationals as they do not need a visa for a short-term visit.
Western nations have already stopped allowing international flights from Russia to land at their airports.