When to apply?
You cannot apply more than 3 months prior to your departure date.
However, as slots are limited, it is strongly recommended to make an appointment as early as possible. Applicants should be aware that the visa department is busy all year long, with peak seasons from March to the end of September, and from mid-October to the end of December.
You MUST BOOK your airline ticket but do NOT PURCHASE it until the visa has been approved. At the time of your appointment, you must bring that airline reservation.
Once the visa is approved, the presentation of the flight ticket (with the ticket number clearly referenced) will be required before issuance of the visa.