Air distance from Riga, Latvia to Porto, Portugal is 1794.5 Miles (2887.9 Kilometers / 1558.3 Nautical Miles).
3 hrs, 43 mins is the flight duration between Riga and Porto. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.