Megatop is the man for SQ data.

I'll toss in anecdotal tidbits. I flew SQ to SIN a few months ago and connected in SIN to one of the discount airlines in Asia now flying for my hop to BKK. The discounters are now an option to look into. It improved my arrival time in BKK with fewer hours layover in SIN.

A few heads up items. Layovers are common enroute BKK regardless of routing. They can be 5-6 hrs . There is a transit hotel at SIN and Taipei and I think Narita near the gates. For about $25 you can get a standard, conventional hotel room with TV for 5 hrs, catch some sleep, a shower and relax. This matters a lot because you will arrive at SIN about 24 hrs since your last shower and you may not have slept, either. If the LAX departure was 1 AM you have not slept in 48 hrs.

The LAX departures do tend to be 1 AM. It depends on when you want to get to BKK. If you are comfortable arriving at BKK at 11 PM there are other options. But I like to get to BKK with enough hours of sunlight left to arrange alternate hotels there if previous arrangements fall apart (in a country where I don't have the language). Also, if you arrive at the airport at 11 PM you may be 2 AM before you get to a hotel, and if BKK is a stopover to Phuket or Pattaya or Hua Hin you are then sleeping in a bed at full nightly rate for maybe only 6 hrs before heading out to your REAL final stop.

Point being, 1 AM in LAX is 2 AM in SLC or 3-4 AM elsewhere in the US. The SQ FAs serve food almost immediately after takeoff because that's the right schedule in SIN. Their food is superb, but it's worthless if you can't stay awake to eat it. It's 1 AM for your body and there you are trying to eat dinner. This is a problem.

But put all that aside for a moment. No question the SQ experience far surpasses anything Delta has even dreamed of. It's an experience worth having.