Originally Posted by
PAL62V
If you sneak into first class on a train you are required to pay the difference in your fare. This is enforceable. Why is an aircraft any different?
This isn’t the case (in the UK at least). The very minimum you will have to pay is a Penalty Fare which is £20 or double the First Class single fare to the next station. Whatever is highest. Of course if you wished to continue your journey, you’d then have to purchase a separate ticket to your final destination. In many cases, if the inspector suspects you were trying to avoid paying the fare due, the case will be processed for prosecution.
A penalty fare of double the business class one way fare from SIN to SYD could prove very costly indeed!