I'm travelling on an international flight to JFK next sunday, late morning. I need to book an onward connection and will probably do so on JetBlue as it has the best fares and is nonstop so no through checkin or AA lounges (). Question is, how long does it normally take in JFK to clear customs, immigration etc and transfer terminals and so how long do I need to give myself to be 'safe' and not miss the connection? When I've arrived in the US previously, queues at immigration have varied between huge (up to 1hr wait) at Miami, to non-existant at Chicago.