Almost bankrupt myself doing it but the Costa Rica trip is back on =)

Flying Wednesday instead. Was a bit of a struggle to find any routes that don't have a transfer in "The Land of the Free" but eventually found some with KLM.

I feel a bit dumb for not having checked properly but I've transferred through so many airports around the world and never had to have extra documentation to do so. It just didn't even occur to me I would have a problem in the US.