I've been looking at flights from Bangkok to the UK for next year. The best I can currently get is Swiss Air. Looking at the trip in reverse I would pay 25% less for flying from UK to Bangkok return. Checking other airlines, for the same, gives me the conclusion that someones making a lot of money. It relates to roughly to 200 Pounds (10,000 Baht) per person on the cheapest seat. How do they justify the difference ?