I'm assuming you've heard that Aeroflot is stopping flights to all countries with the exception of Belarus effective March 8th. I understand they've also been removed from the global airline ticketing system. Not sure where you are located but a land border crossing may be your most effective means of travel once you have the visa.
Also, this might be helpful for your current situation (not immigration related but people are posting this across the web so thought I'd share with you in case you haven't seen):
The Russian authorities have restricted access to BBC websites in Russian and English, as well as other international and independent media, accusing them of circulating "false information" about what is happening in Ukraine.
In response, the BBC said "access to accurate, independent information is a fundamental human right which should not be denied to the people of Russia, millions of whom rely on BBC News every week".
Record numbers of people have read the BBC's Russian language news website since the invasion.
To get around the BBC ban in Russia:
download the Psiphon app from the AppStore or Google Play Store
look for the dedicated BBC site on the Tor Browser which can be found using this URL. Note that this URL only works using the Tor Browser or the Onion Browser (on iPhones)
if access to the apps is restricted then send a blank email to
get@psiphon3.com or
gettor@torproject.org. An email will be sent in response with a direct and safe download link
The BBC has also launched two new shortwave frequencies broadcasting World Service English news for four hours a day to Ukraine and parts of Russia:
15735 kHz from 14:00 GMT to 16:00 GMT
5875 kHz from 20:00 GMT to 22:00 GMT