Flights from Ontario to Trieste (ONT → TRS)

ONT
Ontario
Ontario International Airport, USA
TRS
Trieste
Trieste, Italy
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No direct or convenient 1-stop flights found between Ontario and Trieste. Try exploring routes from each airport individually.

Frequently asked questions

Are there direct flights from Ontario to Trieste? Currently, there are no direct flights from ONT to TRS. You may need to connect through another airport.

Related guides for this route

Sibling pages from across Flightmaps — fares, visa rules, country aggregations, and per-airline routes for Ontario → Trieste.

Cheap flights from Ontario to Trieste Cheapest month to fly to Trieste Flights from USA Flights to Italy Visa-free with USA passport All airports in Italy

Try a nearby airport to Ontario

Flights to Trieste (TRS) from other airports within 350 km of Ontario. Often unlocks cheaper fares or better times.

SNA → TRS 48 km from ONT Santa Ana → Trieste USA · 48 destinations LGB → TRS 57 km from ONT Long Beach → Trieste USA · 18 destinations BUR → TRS 71 km from ONT Burbank → Trieste USA · 31 destinations LAX → TRS 75 km from ONT Los Angeles → Trieste USA · 181 destinations VNY → TRS 84 km from ONT Los Angeles → Trieste USA · 9 destinations

Or try a nearby airport to Trieste

Flights from Ontario (ONT) to other airports within 350 km of Trieste.

ONT → LJU 88 km from TRS Ontario → Ljubljana Slovenia · 29 destinations ONT → VCE 96 km from TRS Ontario → Venice Italy · 95 destinations ONT → TSF 101 km from TRS Ontario → Venice Italy · 45 destinations ONT → RJK 108 km from TRS Ontario → Rijeka Croatia · 20 destinations ONT → PUY 109 km from TRS Ontario → Pula Croatia · 34 destinations

Other flights from Ontario (ONT)

Atlanta (ATL) Austin (AUS) Baltimore (BWI) Boise (BOI) Charlotte (CLT) Chicago (MDW) Chicago (ORD) Dallas (DAL) All 31 destinations →

Other flights from Trieste (TRS)

Barcelona (BCN) Bari (BRI) Berlin (BER) Brindisi (BDS) Brussels (CRL) Cagliari (CAG) Catania (CTA) Dublin (DUB) All 27 destinations →