Rome to Seattle flights (FCO–SEA)
FCORome–Fiumicino Leonardo da Vinci International Airport
Italy
Italy
SEASeattle–Tacoma International Airport
United States
United States
Alaska Airlines and Delta Air Lines fly Rome to Seattle (FCO–SEA) nonstop and back, a great-circle distance of 9,130 km (5,670 mi).
- From
- FCO
- Rome
- To
- SEA
- Seattle
- Nonstop
- Yes · 2 airlines
- Airlines
- AS · DL
- Distance
- 9,130 km (5,670 mi)
- Time difference
- Seattle 9 hours behind
- Most flights
- Alaska Airlines
- Time in the air
- 11h 23m · 10h back
- On time (Touchdown Index)
- 75%
- Flights a week
- AS ~4 · DL ~2
- Aircraft seen
- Boeing 787-9 Dreamliner · Airbus A330-900
Network data imported from airport and airline sources:· How we verify
When to fly FCO–SEA
Days in Seattle average 18–28 °C in May, June, July, August and September. Set your watch 9 hours back on landing at SEA.
Rome to Seattle: frequently asked questions
Tracked flights between 6 September and 3 October 2026, from public ADS-B data.
How long is the FCO–SEA flight?
11h 23m wheels-up to wheels-down, the median of 17 tracked flights; SEA–FCO took 10h.
Which airlines fly FCO–SEA direct?
Alaska Airlines and Delta Air Lines.
What is the time difference between Rome and Seattle?
Seattle is 9 hours behind Rome: a FCO departure at noon is 03:00 local time in SEA.
Is FCO–SEA usually on time?
75% of 40 FCO–SEA flights landed within 15 minutes of their usual time; 15% were over an hour late.
How many FCO–SEA flights a week?
Alaska Airlines 4 and Delta Air Lines 2 each way.
What aircraft fly FCO–SEA?
Boeing 787-9 Dreamliner and Airbus A330-900.
Seattle to Rome: the return flight (SEA–FCO)
All 2 airlines also fly SEA–FCO nonstop.
The return takes 10h in the air (median of 27 tracked flights), 83 minutes shorter than FCO–SEA.
Airlines flying FCO–SEA nonstop
| Airline | Usually takes off (FCO time) | Type | Alliance | Notes |
|---|---|---|---|---|
 Alaska Airlines AS | — | full-service | oneworld | Seasonal |
 Delta Air Lines DL | 12:36–14:06 | full-service | SkyTeam | Seasonal |
One-stop alternatives to flying FCO–SEA nonstop
One airline on both legs; check it's sold as one ticket.
- Via Dublin (DUB) with
Aer Lingus: 9,170 km (5,700 mi) flown, almost no further than nonstop. - Via London (LHR) with
British Airways: 9,150 km (5,680 mi) flown, almost no further than nonstop. - Via Paris (CDG) with
Air France: 9,150 km (5,690 mi) flown, almost no further than nonstop. - Via Frankfurt (FRA) with
Condor and Lufthansa: 9,160 km (5,690 mi) flown, almost no further than nonstop. - Via Keflavík (KEF) with
Icelandair: 9,130 km (5,670 mi) flown, almost no further than nonstop.
FCO–SEA route map
More from Rome and Seattle
Other arrivals in United States
Also nonstop from FCO, nearest to SEA first (straight-line distance):
- FCO–SFO: San Francisco · 1,090 km (679 mi) from SEA
- Los Angeles (LAX) airport guide · 1,540 km (955 mi) from SEA
- Denver (DEN) airport guide · 1,650 km (1,020 mi) from SEA
- Minneapolis (MSP) airport guide · 2,240 km (1,390 mi) from SEA
- Dallas (DFW) airport guide · 2,670 km (1,660 mi) from SEA
Explore the airlines’ route maps
Plan your arrival at Seattle–Tacoma International Airport (SEA)
Departure
Rome–Fiumicino Leonardo da Vinci International Airport
Fiumicino (FCO), Rome. In our data, 96 airlines fly nonstop from FCO to 214 destinations.
View FCO airport guide →Arrival
Seattle–Tacoma International Airport
2 ways into Seattle, fastest from 25 min:
- Link light rail (1 Line) 38–40 min · $3
- Taxi or rideshare 25–45 min
Weather in Seattle vs Rome
Seattle is cooler than Rome in every month, by 4–8°C; the biggest gap is in June (22°C against 30°C). In October it averages 16°C in Seattle and 23°C in Rome.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seattle | 9° | 10° | 12° | 15° | 19° | 22° | 25° | 25° | 22° | 16° | 11° | 8° |
| Rome | 13° | 14° | 17° | 20° | 25° | 30° | 33° | 33° | 28° | 23° | 17° | 13° |
Average daily highs. Climate normals from Climate of Seattle and Rome (Wikipedia, CC BY-SA), which cite the national weather services.
Onward from Seattle
Places you can't fly to nonstop from FCO, but can from SEA — for a stopover or a second leg.
Related routes
Sources
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
Flight tracking: adsb.lol community ADS-B data (CC0), 6 September – 3 October 2026. Times are median wheels-up to wheels-down; add taxiing for gate-to-gate.
Report a change — seen something different at the airport or on the airline's site? We re-check and log corrections publicly.