Air distance from Guam, USA to Kaunas, Lithuania is 6626.5 Miles (10664.2 Kilometers / 5754.4 Nautical Miles).
Flight duration time from Guam to Kaunas is 13 hrs, 45 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.