Need help booking?
Unpublished phone-only deals available
OPO to KNF: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Marham (RAF Marham)
898 mi
1,446 km · 781 nm
2h 25m
estimated nonstop flight time
Same time
time difference · heading northeast
See live OPO→KNF fares Phone-only fares on this route — call free
Flight time details
898 miles nonstop takes roughly 2h 25m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- KNF — RAF Marham · Marham, United Kingdom
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 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
Near KNF
- LKZ · RAF Lakenheath17 mi away
- MHZ · RAF Mildenhall20 mi away
- BEQ · RAF Honington23 mi away
- NWI · Norwich International Airport31 mi away
Frequently asked questions
How far is OPO from KNF?
The flight distance from Porto (OPO) to Marham (KNF) is 898 miles (1,446 km, 781 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to KNF?
A nonstop flight takes about 2h 25m 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 cheapest way to fly from OPO to KNF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–KNF that never appear on search engines, with no booking fees.