One thing not mentioned here is the fact that the booking airline is forwarding your information to US Homeland Security as a ticketed passenger on every one of these flights...ESPECIALLY if you are in transit and checked in. Issues with the airline notwhithstanding, it might be a bad thing to keep showing up in the DHS database as someone that frequently books, but does not complete, travel to a gateway city like SEA. I'm not sure if I would get you flagged on a no-fly list, but I'm not sure it would be worth the risk and subsequent nightmare to get off that list (just google "put on no-fly list in error" if you want to read some scary accounts of people trying to get off the list when they are put on in error).