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Deep Vein Thrombosis

What is it?

Deep Vein Thrombosis (DVT) occurs when a blood clot forms, often in the lower leg, which in some cases can be exacerbated by sitting still for long periods of time. For this reason, DVT is sometimes incorrectly referred to as ‘Economy Class Syndrome’.

Although the risk of developing DVT during even longhaul flights is rare, it can be a serious and sometimes fatal condition and you should consult your doctor before travelling if you have any concerns, especially if you fall into a high risk group.

Who is at risk?

  • Those with a history of thrombosis
  • Pregnant women
  • Women taking an oral contraceptive pill
  • Smokers
  • Obese people
  • Some patients with congestive heart failure
  • People with malignant disease

How can I reduce the risk?

  • Drink plenty of water to avoid dehydration
  • Limit your alcohol and caffeine before and during travel
  • Avoid smoking before travel (all our flights are non-smoking)
  • Follow the exercise video shown on selected flights
  • Wear loose-fitting and comfortable clothes
  • Walk around the cabin at regular intervals
  • Avoid crossing your legs
  • It may be helpful to wear elastic stockings
  • Remember to pack any prescription medication in your hand luggage and take it as prescribed
  • If you are considered particularly at risk, we strongly advise you to seek expert medical advice before flying.


You can also give our Customer Support team a call on 0871 664 0144 (calls cost 10p per minute plus network extras) to talk about options such as seats with extra space to make your flight more comfortable.