The majority of people who arrive in Tenerife will disembark their plane at the Reina Sofia Tenerife South Airport (TFS).
This is a large International Airport, with all normal facilities of restaurants, cafes, and duty-free shops. There are excellent services provided for wheelchair users and free WiFi should you require it.
In general, the airport runs on a very efficient basis compared to many other large international airports, with not too much delay in getting through security checks, and on arrival, the speed in the collection of luggage is much better than most other airports.
For detailed information regarding Tenerife South Airport, a very useful site to visit is Tenerife Airport Guide. Here you will find a lot of interesting and useful information covering every subject.