ROUTE UPDATE: Lufthansa introduced 747-8I between Frankfurt (FRA) and Buenos Aires Ezeiza (EZE) on 26Oct14

Lufthansa flew the 747-8I from Frankfurt (FRA) to Buenos Aires Ezeiza (EZE) a few times earlier in 2014 but officially introduced the aircraft on a daily basis on the route on 26Oct14, the last Sunday of October, the traditional summer/winter schedule changeover date of the international airline industry.

Some interesting facts:

* The 747-8I is the longest-ever passenger-carrying aircraft at 250 ft. 2 inches (76.3m) compared to the A380 at 239 ft (72.73m). 

* Frankfurt (FRA) - Buenos Aires Ezeiza (EZE) is Lufthansa's longest non-stop route.  

* Lufthansa's 747-8I is the only 747 of any version currently flying in Argentina.  

Sources:

http://747-8.lufthansa.com/#/b747/experience

http://www.siscoma.com.ar/online/aviacion/2014/avn141030/avn-141030.html