You can secure a Lufthansa Premium Economy seat in several ways. The most direct method is to select it during the initial booking process on Lufthansa's website. If you have already booked an Economy ticket, you can often upgrade through the "My Bookings" section up to 24 hours before departure for a fixed fee. Lufthansa also offers a "bid for upgrade" system where you can submit an offer of what you are willing to pay; if accepted, you are notified 24–36 hours before the flight. Additionally, members of the Miles & More program can use their accumulated miles or "eVouchers" to upgrade. If there are seats left on the day of travel, you can sometimes purchase an upgrade at a discounted rate at the check-in counter or the boarding gate. Note that upgrading to Premium Economy gives you a more spacious seat and better meals, but usually follows the original ticket's baggage rules.