I traveled quite a bit for work on US airlines [I have over 600,000 lifetime miles on United and I didn't join their frequent flier program when I first started traveling, nor did I always have a choice of airline]. Utilizing foreign carriers for travel has been a new experience since I retired and started traveling exclusively for pleasure. My flight from Madrid to Milan was reasonably priced and pleasurable enough. Everything went very smoothly from check-in to baggage claim. I have definitely added Iberia to the list of airlines I will consider for future travel.