JFK - John F. Kennedy International Airport (New York City)
NCE - Nice Côte d'Azur Airport (Nice, France)
It's worth noting that while the text mentions NYC as the departure city, it doesn't explicitly mention the airport, so JFK is just a guess. Additionally, while Nice is mentioned as the destination city, the airport code NCE is not explicitly mentioned.
Therefore, the three potential IATA airport codes that could be relevant for this text are:
* JFK
* NCE
If you have any further information or context, please provide it, and I'll be happy to help you further.