How long is the flight from FCO to TRS?

About 1 h 20 min gate to gate, estimated from the distance. Real times depend on winds and the routing.

How much EU261 compensation is a delay on FCO–TRS worth?

FCO → TRS: EU261 €250 (any airline). TRS → FCO: EU261 €250 (any airline). For arriving 3 hours or more late, unless extraordinary circumstances apply.

How much CO2 does a flight from FCO to TRS emit?

About 105 kg CO2e per economy passenger one way, including the extra warming effect of flying high (62 kg without it), using the UK government's 2026 conversion factors.

AirportMiles

Rome (FCO) – Trieste (TRS)

Flights on Google Skyscanner

Distance, flight time and the airlines that fly it, from open data.

Distance: 458 km; 284 mi · 247 nm
Flight time: 1 h 20 min; Estimate from distance
Time difference: none
CO2 per passenger: 105 kg; One way, economy, incl. RF (62 kg CO2 only)
Passengers / year: 312,688; 2024 · +17.4%
Flights / week: 55; Both directions, average
Seats filled: 70%; 444,817 seats a year
Airlines nonstop: —; Not named in this source

Traffic: Eurostat (avia_par_it), reported by the airport in Italy, 2024. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources

Shortest path over the earth's surface (great circle). Real flights bend around weather, winds and airspace.

The way there

Heading from FCO: 12°
Heading from TRS: 193°
Halfway point: 43.82, 12.84
Great-circle km: 458 km (sphere, for EU261)
Clocks: Same time in both

The estimate for a route without real times is 1 h 20 min; how it is worked out is on Sources.

Passengers per month, both directions (2024)Busiest: June 2024: 29,849 passengers

Show as a table

Month	Passengers
Jan 2024	19,962
Feb 2024	22,543
Mar 2024	25,722
Apr 2024	26,822
May 2024	28,115
Jun 2024	29,849
Jul 2024	28,388
Aug 2024	25,055
Sep 2024	27,295
Oct 2024	29,607
Nov 2024	25,015
Dec 2024	24,315

Flights per month, both directions (2024)Busiest: August 2024: 248 flights

Show as a table

Month	Flights
Jan 2024	241
Feb 2024	230
Mar 2024	244
Apr 2024	241
May 2024	246
Jun 2024	240
Jul 2024	242
Aug 2024	248
Sep 2024	236
Oct 2024	246
Nov 2024	228
Dec 2024	237

Delay compensation (EU261 / UK261)

Measured by great-circle distance: 458 km.

FCO Rome → TRS Trieste

EU261€250 for arriving 3 hours or more late.

Covers any airline.

TRS Trieste → FCO Rome

EU261€250 for arriving 3 hours or more late.

Covers any airline.

Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.

Every airport pair between Rome and Trieste

	TRS
FCO	458
CIA	453

Kilometres. Linked numbers have a page of their own. All Rome airports

More routes from FCO

Route	To	Distance	Passengers / year
FCO → MAD	Madrid, Spain	1,334 km	1,977,438
FCO → CTA	Catania, Italy	539 km	1,941,657
FCO → BCN	Barcelona, Spain	850 km	1,706,636
FCO → PMO	Palermo, Italy	409 km	1,671,961
FCO → ORY	Paris, France	1,092 km	1,185,444
FCO → JFK	New York, United States	6,884 km	1,141,515
FCO → LIN	Milan, Italy	470 km	1,054,322
FCO → CDG	Paris, France	1,102 km	965,754
FCO → LGW	London, United Kingdom	1,407 km	923,766
FCO → ATH	Athens, Greece	1,087 km	898,550

More routes from TRS

Route	To	Distance	Passengers / year
TRS → FRA	Frankfurt, Germany	593 km	101,090
TRS → NAP	Naples, Italy	553 km	89,585
TRS → BRI	Bari, Italy	585 km	77,619
TRS → CTA	Catania, Italy	938 km	67,014
TRS → PMO	Palermo, Italy	850 km	66,491
TRS → STN	London, United Kingdom	1,179 km	63,469
TRS → IST	Istanbul, Turkey	1,331 km	60,909
TRS → VLC	Valencia, Spain	1,340 km	48,722
TRS → MLA	Malta, Malta	1,112 km	46,439
TRS → CAG	Cagliari, Italy	815 km	42,086

Questions

Rome (FCO) and Trieste (TRS) are 458 km (284 miles, 247 nautical miles) apart, measured along the shortest path over the earth's surface.