Why would you want to if your flight leaves at 0710? One hour before (06:10) would be plenty, cut-off is only 30 min before departure. There's not all that much to do in the Budget Terminal after check-in, although you can grab breakfast at tolerable prices (better than on the plane).

As for the rest, Immigration and baggage claim in Singapore usually takes under 15 minutes, although you might want to factor in a little extra as they dig it up from wherever they store unclaimed bags. Taking a taxi isn't worth it unless you have a lot of baggage, as there's a free shuttle bus between T2 and the Budget Terminal, which runs every ten minutes after 4:30 AM according to the official site.

If I was you, I'd snooze happily until 5:30 AM or so, take a quick wake-up shower, and only then mosey over to the BT.

I am doing the opposite: arriving on Tiger (from Clark) and then departing on UA about 12 hours later. Will there be any trouble getting from the Budget Terminal and through to Terminal 1 airside so that I can stay at the Transit hotel?

Hi MillionMileDriven and welcome. Although I have not used the new Budget Terminal in SIN, basis my reading of the official site posted above by jpatokal, it seems there should be no problem for you to transit from that terminal to Terminal 1 via Terminal 2 depending on your time of arrival(?). Please also consult the internet site of the SIN airport for details on transfer times.

Good luck.

You won't get a UA BP until counters open ~3hrs before the flight so you won't be able to go airside. For 12 hours, get into town and book a hotel.

Thanks for the idea to check the official airport site. I found the answer on their Transit FAQ page. Looks like I will need to get a room in town

http://www.changiairport.com/changi/...nsit_faqs.html