TRS is a unique code, commonly called an IATA code, used in the aviation industry to identify airports. This code, along with many others, are defined by IATA (International Air Transport Association). A TRS flight refers to a flight to Trieste Ronchi dei Legionari Airport.
Trieste Ronchi dei Legionari (TRS), located 29.3 km from the city centre, is the airport you fly into when you book flights to Trieste.
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