Probably these are the nearest thermals to the airport of Munich and to Munich itself. The thermal complex Aquariush Swimming Pool & Sauna is situated in 17 minutes drive from the airport and in 19 minutes drive from the Olympic park of the city. In spite of the vicinity of the capital of Bavaria this is a full thermal complex with pools, saunas, a fitness center, though, its size is smaller than the sizes of the other complexes in this section. The water to the pools is supplied from a well 2 km depth, the sulfur thermal waters are especially recommended for the restoration of the musculoskeletal system.
Unfortunately, the website offers the prices only for 2018, but I think they did not change much, add 1-2 euros.
By the public transport: you can get to the thermals by bus 219, the headway is 20 minutes. The bus 219 runs between the stations S-Bahnhof Unterschleißheim (S1) – Lohhof Süd - Garching Hochbrück (U). The stop Haltstelle Sportpark is situated in 70 metres from the thermal complex.
The Residence Munich (Residenz München)