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FRI to OPO: distance & flight time
Fort Riley (Marshall Army Air Field) → Porto (Francisco de Sá Carneiro Airport)
4,437 mi
7,141 km · 3,856 nm
9h 10m
estimated nonstop flight time
+6h
time difference · heading northeast
See live FRI→OPO fares Phone-only fares on this route — call free
Flight time details
4,437 miles nonstop takes roughly 9h 10m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- FRI — Marshall Army Air Field · Fort Riley, 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 FRI
- MHK · Manhattan Regional Airport8 mi away
- SLN · Salina Municipal Airport51 mi away
- EMP · Emporia Municipal Airport59 mi away
- FOE · Topeka Regional Airport - Forbes Field60 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 FRI from OPO?
The flight distance from Fort Riley (FRI) to Porto (OPO) is 4,437 miles (7,141 km, 3,856 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FRI to OPO?
A nonstop flight takes about 9h 10m 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 Riley and Porto?
Porto is 6 hours ahead of Fort Riley.
What is the cheapest way to fly from FRI to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FRI–OPO that never appear on search engines, with no booking fees.