Air distance from Riga, Latvia to Vientiane, Laos is 4766.4 Miles (7670.7 Kilometers / 4139.1 Nautical Miles).
Flight duration time from Riga to Vientiane is 9 hrs, 53 mins. 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.