Originally Posted by
WineCountryUA
ETC expiration is book by, travel can be later. FFC expiration is start travel by. So a longer period of usefulness for ETCs
no differences, changes become effective FFCs
I much prefer to save the ETC as they are great for upgrading a fare basis as long as there is enough credit on the ETC. In the old days ETC did not work outside of united metal, but now that they do I much prefer them for the fare basis update as I shared.