It is best to apply for a Luxembourg Visit Visa 4 to 6 weeks before you plan to travel. You can apply up to 6 months early (9 months for seafarers). Visa processing usually takes 15 to 30 days, but it could take longer if there are many applications or if they need more info from you. Applying early lets you get your paperwork together, set up your appointment, and helps you avoid travel delays.