The cheapest day to depart from United Kingdom to San Juan is on a Tuesday when prices can be found for as low as £691. On the other hand, Thursday is the most expensive day to depart from United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £830.
Flying to San Juan from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £780 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to San Juan is at midday when prices are around £798.