Are there nonstop flights from Milan (LIN) to Ronchi dei Legionari/Trieste (TRS)?

Yes. Aeroitalia fly this route. Flight time is about 53m.

What is the fastest connection from Milan (LIN) to Ronchi dei Legionari/Trieste (TRS)?

via Rome ≈ 2h 5m, via Frankfurt am Main ≈ 2h 18m, via Olbia ≈ 2h 21m (estimated flying time, excluding layovers).

Milano Linate Airport (LIN) to Trieste Airport (TRS)・328 km

Nonstop flights available (1 airline). Flight time about 53m. Nonstop return flights also operate.

3 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.