I have three trips to the US coming up but all to cities SQ don't serve. Unfortunately, I've found no way to get decent quotes from their website. The moment a connection on a partner airline is added (usually Virgin America), the ticket price shoots up from ~S$3000 to ~S$8000. This is for a JFK-IAD or JFK-BOS flight of only 200 miles. How does this make any sense?! I realise I could book separate tickets myself, which I have done in the past, but that safety net of having an internal transit on the same ticket as the arrival flight is pretty important in the US with immigration being sometimes unpredictable. Am I missing something here?