I always counted 50 minutes from midtown to JFK, taking the E train to Jamaica station and the air train. But I think GP's point is that it could be done in 20

I always counted 50 minutes from midtown to JFK, taking the E train to Jamaica station and the air train. But I think GP's point is that it could be done in 20 minutes. The A train is a subway, it's nowhere near the speed of the Heathrow Express.