Originally Posted by ricktoronto

Not so strictly. I have flown back to HKG a couple times on an earlier flight ex-BKK on A D I base fares on the basis I got there quite early and they had a flight leaving earlier, once due to just being amazingly early at BKK and the other the flight was late in from HKG or DEL or wherever and thus hadn't departed, but it was 90 minutes earlier than mine. Their attitude was sure, there are seats, why hang around, go earlier if you want. No fees, no fare rules, nothing.