My husband and I plan to fly to Zurich next month standing by on United. We will have carry on luggage only. If we need to use ZED on Swiss Air, KLM,BA ect. do these airlines gate check bags of those standing by for flights. If not, how does one run beween airlines, while traveling only with carry on lugguage? I know that European carriers only allow up to 17 lbs. to be taken as carry ons.

1americanre