Here ya go - check the wisdom in SQ’s decision to downsize R 12 to 6 - I want 2 R comm tix o/w ZRH-SIN Jun 24 - ZERO availability - check other dates also when just searching for single seat:
At the moment, I'm guessing many travellers are buying up to F and R from business class. Premium cabins on most routes are just full to the brim and fares crazy (SIN-BNE and v.v. being a notable exception).
There is a serious lack of competition for the travel at the moment, into and out of Singapore, with massive recovery in demand from business travellers (into and out of SIN) and leisure travellers (particularly out of SIN).
Going towards US SQ basically have a monopoly on Singapore-US premium travel, with virtually no CX, no BR/CI, and Japanese carriers still operating (very full) reduced services to the US out of Tokyo, and limited services out of SIN.
Eastbound, pre-pandemic EK had 4x daily, this month 7x weekly. QR used to have 3x daily and now 10xweekly. BA used to have daily 777 & A380, now a daily 787 (and QF's A380 is not operating yet to LHR). LX only operating 3x weekly to ZRH instead of daily. LH operating A340's to FRA instead of A380. TG operating 10x weekly between SIN & BKK and these are not timed for onwards connections to Europe. The list goes on. SQ who are operating much closer to normal schedule than before (and more services to the US than pre-pandemic with the addition of SIN-JFK nonstop) certainly seem to be selling most of their seats.
If you look at expert flyer even a month out, there are many flights with zeroes. And if there are seats they are in the F, Z, Y/B (full fare) fare classes. Except for BNE!