I am writing to alert travelers that I was denied boarding on an SAS flight from San Francisco to Copenhagen several weeks ago. I am a frequent traveler on this airline (have a second home in Sweden near the Danish border), and have always liked their services. However, when I got to the counter to check in, I was denied boarding on the flight. The reason was that my passport expires in mid-May (My trip was March 2-22nd). I would have renewed the passport upon my return. The U.S. and international sites say that 3+ months is "recommended" beyond the return date, but the sites do not say "required." Also, I found many of my savy colleagues were unaware of this ruling, and obviously so was I. SAS will not refund my ticket. Is there anything I could have done, or can do at this point? To be clear, the airline reps had no advice for me nor suggestions on how to quickly renew my passport nor find a new flight. Thanks.