Hi - back again. I am trying to book my return flight, and have an option of doing LIS-MAD-DFW. The problem is that the layover in MAD is only 1 hour, and i dont know if that is enough time to make the connecting flight to DFW. I am coming from lisbon so not sure if i will have to do any security or passport control. Also the airline for lis-mad is called Air Nostrum not sure how this airline is. Are they like a low cost carrier like spirit where i have to pay for bags, seats etc? Thanks.