Originally Posted by
cphflyer_EB
I have flown SCL-MEX several times in the last couple of years and have always been upgraded, even though I am "just" Black. Same goes for SCL-MAD and most other routes.
For me it is mostly SCL-AEP, SCL-GIG and SCL-GRU where the upg does not result. And mostly not because of Black Signature UPG requests, but because prem eco is completely sold out.
I can echo that experience. As far as I can judge it, even lower tiers occasionally benefit from longhaul upgrades. I used to score upgrades as a Gold and Platinum on flights to Europe or Mexico.
Of course, the Y+ cabin is particularly tiny and hence fills up easily.
"Competition" on the shorter sectors in Y+ and C also tends to be higher, because
a) this is LATAM's home market with higher "elite density" and
b) these flights are a good opportunity to burn your companion vouchers (6 don't get you too far, when travelling longhaul with a family), especially when operated with the 787 (yes, I know LATAM's C is not state-of-the-art, but I still like it).