Holidaymakers jetting off on long-haul flights this summer are being urged to consider a £13 item that could significantly reduce the risk of serious circulatory problems. Compression socks, also known as flight socks, can help prevent deep vein thrombosis (DVT) and leg swelling on journeys lasting four hours or more, according to the NHS.
Why Compression Socks Matter for Long Flights
Long flights often involve limited legroom, restricted movement, and hours spent sitting in the same position. This prolonged inactivity can lead to muscle stiffness, discomfort, and fluid build-up, causing swollen, painful legs. More seriously, it increases the risk of DVT—a blood clot that usually forms in a deep vein in the leg and can be life-threatening if it travels to the lungs.
The NHS advises that Class 1 compression stockings, which exert a pressure of 14-17mmHg at the ankle, are generally sufficient for travel. Boots Flight Socks, providing this level of compression, cost around £13 per pair. Many long-haul travellers swear by them for making journeys safer and more comfortable.
Who Is at Higher Risk of DVT?
If you think you may be at increased risk, speak to your GP before travelling. According to the NHS, you are more likely to develop DVT if you:
- are aged over 60
- are living with overweight or obesity
- smoke
- have had DVT before
- take hormone replacement therapy (HRT)
- take the combined contraceptive pill or use oestrogen-containing contraception, such as the patch or vaginal ring
- have cancer or heart failure
- have varicose veins
- have thrombophilia, a condition that makes your blood clot more easily
- have inflammatory bowel disease or vasculitis
Proper Fitting Is Crucial
The NHS emphasises that compression stockings must be measured and fitted correctly. Ill-fitting stockings could actually increase the risk of DVT, so it is important to seek advice from a pharmacist or another healthcare professional before purchasing them. Boots also advises speaking to a doctor or healthcare professional before using flight socks if you have:
- diabetes
- nerve problems in the legs or feet that reduce sensation
- open leg sores below the knee
- been prescribed compression hosiery
- a blood clot, or a family history of blood clots
- cancer or have undergone treatment for cancer
- certain blood disorders
- heart failure or circulation problems
- recently had surgery, particularly on the hips or knees
- an inherited blood-clotting disorder
According to Boots, flight socks should not be used if you have serious circulatory problems, leg swelling caused by heart problems, or an infection of the leg or phlebitis.
Where to Buy and Final Advice
Flight socks are widely available from pharmacies, airports, and many retailers. If you are unsure whether compression socks are suitable for you, seek advice from your GP or pharmacist before travelling. Taking this simple precaution could make your journey safer and more comfortable.



