Quoting a380787 (Reply 45): Just because it's not Spanish speaking doesn't make it non-core. Not counting the oddball CA tag flight, there's 4x daily GRU-MAD versus only 2x daily GRU-LIS (TAM doesn't even bother serving GRU-LIS, so that tells you the Portuguese linkage is not the biggest determining factor) |
It doesn't make any sense. In MAD, Cathay passengers will be able to connect to IB and LATAM's MAD-GRU which must be at least two daily.
Quoting a380787 (Reply 45): Just because it's not Spanish speaking doesn't make it non-core. Not counting the oddball CA tag flight, there's 4x daily GRU-MAD versus only 2x daily GRU-LIS (TAM doesn't even bother serving GRU-LIS, so that tells you the Portuguese linkage is not the biggest determining factor) |
TAM does not serve any Portuguese destination. As for MAD-GRU... that is a very competitive route already with four carriers (Air China, Iberia, LATAM and Air Europa). Air China heavily discountes that flight... kind of a backpacker flight to LATAM

Add to that the Brazilian economy is somehow in the verge of economic collapse (Brazil is with Russia and Ukraine the country with a major economic contraction in the last year) and that during the Brazilian boom, GRU (which depends largely on Brazilian domestic demand and business, contrary to GIG that can rely on international tourism) has got a lot of service (Emirates, Etihad, Qatar, Etiophian) which has improved massively the Asia-Brazil connectivity. I cannot think a worst time to start a heavily business-oriented route to GRU.
In any case, by reading all the comments people here (as I expected is focusing heavily on the Asia-LATAM traffic). I see it more like Spain-HKG-Asia/Australia. Madrid gets up to 5 daily ME3 flights (plus Turkish, Pegasus, RJ, Air China, Korean, etc) so demand to Asia is there.
One of the key factors (that no one has mentioned) with this flight will be connectivity with mainland China from Spain. MAD has only one Chinese destination (PEK with Air China) which is not very practical for many destinations (and some people would avoid CA). European and ME3 carriers have a limited network of secondary cities (even if growing). Cathay and Dragonair will connect MAD one-stop with basically every medium Chinese city. I see that route could be very useful for the Chinese diaspora in Spain (heavily concentrated around Madrid), Chinese tourism to Spain and the fast-growing number of Chinese that have 2nd residences in Spain or just invest in the country (the same way they do in Canada or Australia).