Posted: Thu Oct 02, 2008 9:21 am-
Hope some of this helps:
You could fly from Calcutta to Bangkok for $200 return on Air India Express. That info is accurate as of Feb 08 so I'm sure prices have gone up since then.
I'd recommend not going to Vietnam twice. As far as I can remember, my Vietnamese visa cost me nearly $50 so if it's not multiple entry then you'd have to get a new one in Laos. I'd recommend crossing into China through Laos. Beautiful scenery that way, hill tribes, etc. I did the crossing the other way in 2006 and they were building a new highway to the border from Kunming.
I assume Bangkok is the easiest place to get a Chinese visa. If it were me, I'd arrange all my visas before leaving BKK. Saves you some cash and in the case of Cambodia, a lot of waiting at a hot dusty border behind 30 other backpackers applying for a visa on arrival.
I think it would make more sense for you to visit Nepal and Bangladesh while in India. The Indian visa is good for 6 months and is multiple entry, so unless you're sure that you'll cross from Tibet to Nepal, best to do it while you're in the area. I can't say enough good things about Nepal.
And once you're in South East Asia, don't forget about Air Asia. Cheapest way to get to Indonesia, Borneo, Philippines, etc.
Oh yeah, I've flown into Bangkok a handful of times and have never been asked to show proof of onward travel. If you're worried about it, buy a ticket on Air Asia for the cheapest flight out of BKK before you arrive. Maybe you can refund it if you don't use it?