I am flying from Saint Louis to Chicago to JFK then Barcelona all on American Airlines, I am wondering will have to retrieve and recheck my bags in JFK before the international leg of the flight? Any assistance is greatly appreciated.
If all on one PNR no problems at all it will be tagged to BCN. If you have multiple PNRs you need to show them the other and make sure they tag the bags to BCN. Coming back that is not the case (even though they will be tagged all the way through) as you have to retreave your bag and clear US Customs at your first point of entry.