Thank you! I still have no idea how you managed to find that information - instead of using the 'online' Fare Product calculator, did you download the program instead?

Wow.....that price is high! I think it would work out much cheaper just to fly directly to Singapore from JFK....

(Actually the SQ flight goes to Frankfurt, as does Lufthansa from EWR ..perhaps I could break the journey there and somehow meet my spouse in London or Zurich). Decisions, decisions...