The Short Answer
A private Old Town guided walking tour (Hagia Sophia, Blue Mosque, Grand Bazaar) typically runs $48-230 for 1-2 people, depending on whether it's a standard guide or a premium "best of" small-group-turned-private format, and often climbs by roughly $48-70 per added traveller. A private airport layover city tour runs considerably more, $550-800 for 1-2 people, since it includes a longer route and private transport across the city. A private day trip outside Istanbul (Pamukkale by plane, Göbeklitepe) runs into the $700-2,000+ range for the group, reflecting flights or long drives, not just guide time.

Istanbul: Old Town Private Guided Tour with Tram Ride
A real example of standard private guided-tour pricing that steps up per added traveller.
From $48
Full day






