Chicago for a business conference when I was 28. I felt so dumb - didn’t know how to buckle the seatbelt or lower the tray. What was most memorable about that trip though was that to get to airport I took a different route than my daily commute. And just few blocks from where I was living I saw a tiny home with a for sale sign on it. I viewed and purchased it a week later and lived there for 25 years.
Washington DC, probably around 1978 or 1979. My boyfriend (now husband) was there on a business trip and he wanted me to fly down and spend a few days and we would drive back. I was pretty nervous about it too, but had a great time in DC.