Convenience really depends. At its most convenient, I think rail wins. You could walk to a station and get exactly where you need to go, right into the city cen

Convenience really depends. At its most convenient, I think rail wins. You could walk to a station and get exactly where you need to go, right into the city centre. No limit on luggage size or weight or anything. No long boarding/deboarding procedure. In fact, now I think about it I'm not sure how you could call air travel convenient compared to rail. The only advantage is you can go further and cross oceans and mountains etc.