Istanbul

Turkish Airlines flies SIN → DXB → JFK in both directions, with a through-ticket back to Istanbul. Economy Basic is hand baggage only; the four fares above it add a checked bag, lounge access or a lie-flat seat.

Turkish Airlines flies LHR → CDG in both directions, with a through-ticket back to Istanbul. Economy Basic is hand baggage only; the four fares above it add a checked bag, lounge access or a lie-flat seat.