3 to 8 weeks
term doesn't look good at all. Since NYC-LED traffic is highly seasonal, it only makes sense to start the service in summer time. In late autumn and winter there won't be enough passengers on the line. Having the manuals approved in June, the company won't be able to start until late summer (considerable time needed for proving flights, tests etc.) or autumn, missing almost all the sweet summer traffic and making it reasonable to start in 2013. Most likely, the FAA killed a peak season for Baltia this year.
The good news is that St.Petersburg passenger traffic continues to grow in double figures per year. In February, it grew up 20% comparing to 2011.