Saratov Airlines (Saravia) suspended flights on the morning of May 30. The final flight was the evening flight from Moscow to Saratov on May 29, departing Domodedovo at 9:41 p.m., according to Travel.ru.
Despite extensive efforts, the company failed to get Rosaviatsiya to lift the restrictions on its air operator certificate, which required it to cease operations after May 30. As a result, Saratov, a city with a population of over a million, is currently left with two flights per day—to Moscow on Aeroflot (assuming Saratov Airlines, which continues to operate the city's airport, continues to operate them).
Aeroflot will likely try to increase the number of flights. The company had been planning a third flight since May 25, but it hasn't launched yet. Meanwhile, tickets for the two remaining flights for this week are practically sold out.
The only remaining economy class ticket for the next three days until June 1st costs 24,386 rubles, with prices on subsequent days slightly lower. Overall, Aeroflot fares on this route for the vast majority of summer flights start at 8,786 rubles (with some flights selling for 7,686 rubles).
Source: travel.ru