Need help booking?
Unpublished phone-only deals available
RML to OPO: distance & flight time
Colombo (Colombo Ratmalana Airport) → Porto (Francisco de Sá Carneiro Airport)
5,834 mi
9,389 km · 5,070 nm
11h 54m
estimated nonstop flight time
-4.5h
time difference · heading northwest
See live RML→OPO fares Phone-only fares on this route — call free
Flight time details
5,834 miles nonstop takes roughly 11h 54m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4.5-hour time set-back when reading arrival times on your ticket.
The two airports
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
- 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 RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 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 RML from OPO?
The flight distance from Colombo (RML) to Porto (OPO) is 5,834 miles (9,389 km, 5,070 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to OPO?
A nonstop flight takes about 11h 54m 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 Colombo and Porto?
Porto is 4.5 hours behind Colombo.
What is the cheapest way to fly from RML to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–OPO that never appear on search engines, with no booking fees.