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FNL to OPO: distance & flight time
Fort Collins (Northern Colorado Regional Airport) → Porto (Francisco de Sá Carneiro Airport)
4,741 mi
7,629 km · 4,119 nm
9h 46m
estimated nonstop flight time
+7h
time difference · heading northeast
See live FNL→OPO fares Phone-only fares on this route — call free
Flight time details
4,741 miles nonstop takes roughly 9h 46m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- FNL — Northern Colorado Regional Airport · Fort Collins, United States
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near FNL
- DEN · Denver International Airport45 mi away
- GXY · Greeley–Weld County Airport20 mi away
- WBU · Boulder Municipal Airport31 mi away
- BJC · Rocky Mountain Metropolitan Airport38 mi away
Near OPO
- BGZ · Braga Municipal Aerodrome26 mi away
- VRL · Vila Real Airport50 mi away
- VSE · Aerodromo Goncalves Lobato (Viseu Airport)55 mi away
- VGO · Vigo Airport68 mi away
Frequently asked questions
How far is FNL from OPO?
The flight distance from Fort Collins (FNL) to Porto (OPO) is 4,741 miles (7,629 km, 4,119 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FNL to OPO?
A nonstop flight takes about 9h 46m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Fort Collins and Porto?
Porto is 7 hours ahead of Fort Collins.
What is the cheapest way to fly from FNL to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FNL–OPO that never appear on search engines, with no booking fees.