How to get from Sabiha Gokcen Airport (SAW) to Galata Tower in Istanbul?

For the return trip from Galata to Sabiha Gokcen, the same logic applies in reverse: get to Taksim first (metro/funicular), then take the Havabus to the airport.

The most comfortable option is a taxi or private transfer directly from the airport to Galata Tower, with no transfers needed.

Budget option: take the Havabus from Sabiha Gokcen to Taksim Square, then continue by metro or on foot to the tower.

An alternative is combining metro + Marmaray + metro instead of the Havabus.

A scenic but less convenient option is taking a ferry, though it involves a steep uphill walk to the tower from the pier; it's easier to take the funicular up to Istiklal Street and walk down to the tower from there.

For route planning, Google Maps or Moovit work well — different apps may show different routes, so it's worth checking a couple of them.

From Sabiha Gokcen it's possible to take the metro fairly close to Galata Tower directly, without necessarily going via Taksim on the Havabus.