INCHEON, South Korea (AP) — Robots will start roaming South Korea's largest airport this summer, helping travelers find their boarding gates and keep its floors clean as the country prepares for its first Winter Olympics game.

Starting this month, Troika, a self-driving robot made by LG Electronics, will rove the Incheon International Airport, telling travelers how long it takes to get to boarding gates and escorting them to their flights. A jumbo cleaning robot will help cleaning staff swab the wide expanses of floors in the airport west of Seoul.

Troika, about the size of a young teen, is eq...