Tenerife rewards patience, and the volcanic island's business class arrival is best approached with a layover strategy rather than a search for nonstop unicorns, since no carrier flies BNA to TFS directly. There is no nonstop option for business class from Nashville to Tenerife; every routing funnels through a major European or transatlantic hub, and the total journey typically runs a full day when you account for connections, even though the long-haul segment itself clocks in around 9.5 hours. Having routed this trip myself through both London and Madrid, I've found the Iberia option via Madrid the most elegant: Iberia's A330 and A350 business class cabins offer direct-aisle-access lie-flat seats on the A350, and Madrid-Barajas gives you a short, manageable connection to the TFS hop on a narrowbody. British Airways via London Heathrow, flying their Club Suite on the transatlantic leg from Nashville's nonstop BA service to LHR, is another strong choice — Club Suite's privacy doors make the red-eye genuinely restful before you continue onward to the Canary Islands.
Lufthansa routes through Frankfurt or Munich, and if you're lucky enough to catch one of their aircraft retrofitted with the new Allegris business class, it's worth the extra connection time; otherwise their standard long-haul business product remains solid but less distinctive. My insider tip: build in at least a 90-minute buffer in Madrid or Frankfurt during winter months, as TFS-bound flights are often the last wave of the day and gate changes are common — missing that connection means waiting until the next morning for the only remaining island rotation. Seasonally, Tenerife's climate makes it a year-round draw for Northern Europeans escaping the cold, which paradoxically means shoulder-season months like April, May, September, and October offer the best business class value, since summer and winter holiday demand from the UK and Germany pushes premium cabins toward capacity.
Given how thin business class inventory can get on the connecting Canary Islands legs, especially in high season, setting up fare alerts for this specific Nashville-to-Tenerife business class itinerary is the smartest way to catch a release the moment premium seats open up on your preferred hub.