Lets average some ticket prices and seats for a flight in 1 month off
their site, Actual figures...
EY = $580 C = $2084 and F = $4084 ALL in $ SGD
Their seating config is 399 EY, 60 C class and 12 F Class
399 x $580 = $231,420
60 x $2084 = $125,040
12 x $4084 = $49,008
Total = 405,468.00 SGD = $2,175,643.41 HKD
Now divide that by 2 = $1,087,821.2 HKD per sector which is over $140,000 USD per sector.
Are you suggesting they are losing or making NO money? Even if the flight went 70% full they are still taking $98,000 USD per sector. Are SQ's overall operating costs per sector higher than that?
By the way these are prices quoted off their website
Some may argue that travel agents get discounts and that not all tickets are sold at the internet prices. Fair argument but even if a full flight after discounts generated 70% of the revenue the website would generate you're still looking at approx $100,000 USD per sector.