Being based in southwest Ohio, I often find I have to purchase positioning flights in order to take advantage of a good fare. Last week we were in Santiago, and took advantage of a good MIA-SCL fare on LAN. That meant positioning from CLE to MIA on AA. The outbound was fine, but on the return the SCL-MIA flight was delayed for 3 hours. Since we had a 2.5 hour connection in MIA, I knew that we would misconnect. I knew we were not protected since it was two separate tickets. I called AA anyway from SCL (what did we do without Skype), and true enough, they said a misconnect would mean reissuing with change fees, making the ticket essentially worthless. Worst, due to a recent snowstorm in CLE the next available was over 36 hours after arriving in MIA. I called LAN and was told LAN would not protect us either (I didn't expect them to). Since we absolutely had to be back that day, we ended up purchasing new one-way tickets from MIA to CLE on CO ($750 per person, ouch!). Luckily we bought it while waiting in SCL because by the time we arrived in MIA the flights were sold out. So, 2 questions: 1) Has anyone encountered a situation where a positioning flight was going to result in a misconnect, and the airlines protected you regardless? This did happen to me once in BKK, where a late BR flight caused a misconnect to PG. BR protected us with PG and even met us at the gate and escorted us to the PG desk for a no-fee re-issue. This could just be an Asia thing, were customer service is usually much better than Stateside. 2) Any tips to avoid this situation? I'm thinking in the future at least 5 hour transit time between positioning flights.