It is usually known, that during long-haul flights some measurements must be taken to avoid veins clots. Eg.: stand up and walk once a while or take a antithrombotic shot before flight.

Yet I never heard of similar advice before long-haul bus rides, and they can take even longer (eg. bus from Buenos Aires to Lima takes 3 days).

Are flights more dangerous than bus rides, or are they equally risky?


There are some claims (common but contested) that the lower air pressure (and humidity) in a plane's cabin increases the risk of thrombosis.

Another factor is that buses usually have toilet breaks every couple of hours, which gives everyone an opportunity to stretch their legs - and people are more likely to make use of these opportunities than to do it regularly in a plane because there is more room and they're reminded and encouraged by the bus stopping and lots of others getting off.

Not the answer you're looking for? Browse other questions tagged or ask your own question.