I am going to Germany from NYC next week, and I am ending my trip in Dresden in early December on a weekday morning. My flight from Frankfurt departs that afternoon at 3PM.

Currently I have a high-speed train (first class) booked departing at 6AM on the day which arrives at Frankfurt Airport at 11AM. This gives me about 2.5 hours of realistic buffer.

Should I worry about further delays / cancellations or is the train generally reliable? The cheapest Lufthansa ticket from Dresden to Frankfurt that morning is about 100 EUR which I would be willing to purchase (and forfeit as a sunk insurance cost if I manage to get on my train within a reasonable time) if it means significantly better peace of mind. The flight back is BA in CE / F via London.

Thanks all!