Originally Posted by
PHLbuddy
My mom lives in Florida (land of the snowbirds). Her friends are less likely to buy round trip tickets. They often buy one-way because they are unsure of their return date, or perhaps they will drive a car back north, etc. As such, this increases their likelihood. In addition, many are naive to frequent flyer programs, or fly tickets on different carriers. Both of these factors play into SSSS.
Are one way tickets still an SSSS trigger? A few years ago, I constructed a round trip out of two separate one way tickets on different airlines (which were not in the same alliance) because it was much cheaper that way than any other round trip that fit the schedule. No SSSS in either direction.
Another time, I did a similar thing because I could use a one way award ticket on one airline, but another airline offered a more convenient and cheaper return flight. No SSSS in either direction.