Medical Q&As

DVT - short haul flights?

Do frequent short flights i.e. 3 per week for a couple of weeks pose the same danger of DVT as long haul flights?

Short haul flights do not carry the same risk of DVT (deep venous thrombosis) as long haul flights, even if many such flights are taken over a couple of weeks. The prolonged sitting that we associate with long haul flights allows blood to pool in the legs, which can result in clot formation in the deep muscles of the calf. Dehydration may also be a factor in clot formation. With short haul flights the duration of inactivity is not sufficient to allow pooling of blood in the feet to occur.