DVT and travel: staying safe on long flights
Long hours sitting still can raise the risk of a clot in the leg. A few simple habits make a real difference, and our pharmacist is happy to talk it through before you fly.
Deep vein thrombosis, or DVT, is a blood clot that forms in one of the deeper veins, usually in the leg. Sitting still for a long time, such as on a long-haul flight or a lengthy coach or car journey, can make a clot a little more likely because the blood in your legs moves more slowly. For most healthy travellers the overall risk stays low, but it's worth knowing how to keep it that way.
The good news is that the steps that help are straightforward and cost almost nothing. If you're flying from Manchester soon and want to feel prepared, pop in to see us at Davyhulme Pharmacy in Urmston and we'll give you honest, practical advice tailored to your journey and your health.
What raises the risk on a long journey
The main thing is time spent sitting still, which is why long-haul flights of roughly four hours or more get the attention. Some people carry a slightly higher background risk too: a previous DVT or clot in the family, recent surgery or a leg injury, being pregnant or having recently given birth, certain hormone treatments including some contraception, being very overweight, or having a condition such as cancer or a clotting problem. If any of these apply to you, it doesn't mean you can't travel. It simply means it's worth a quick chat so you know which precautions matter most for you.
Simple things that genuinely help
Keep your lower legs moving. Flex and circle your ankles, wiggle your toes and, when the seatbelt sign allows, get up and walk the aisle every hour or so. Choosing an aisle seat can make this easier. Drink water regularly and go easy on alcohol and lots of coffee, as staying hydrated keeps the blood flowing more freely. Try not to cross your legs for long stretches, and avoid taking anything to make you sleep through the whole flight, since you'll move less.
Compression stockings and our advice
Properly fitted flight compression stockings gently squeeze the lower leg to help blood return to the heart, and many travellers find them reassuring on long trips. Getting the right size and fit matters, so it's worth asking before you buy. If you have higher-risk factors, our pharmacist can assess your situation in a short consultation and explain your options. Where it's clinically suitable, additional preventative measures or medication may be available, and if anything points to needing a GP or hospital review we'll tell you plainly.
Frequently asked questions
Risk is mainly linked to long periods of sitting still, and journeys of around four hours or more are usually the ones to think about. That includes long flights, but also long coach, train or car trips. The longer you're seated without moving, the more the simple precautions matter.
Most healthy travellers manage well with movement and good hydration alone. Compression stockings are an extra option that many people find reassuring, especially on very long flights or if you have higher-risk factors. The key is a proper fit, so do ask us before buying a pair.
Typical signs are pain, swelling, warmth or tenderness in one leg, often the calf, sometimes with skin that looks red or discoloured. If you notice these during or after travel, seek medical advice promptly. If you become breathless or have chest pain, treat it as an emergency and call 999.
Yes. Come in to Davyhulme Pharmacy in Urmston and our pharmacist will go through your journey and any health factors, explain the precautions that suit you, and help with compression stockings. Where it's clinically appropriate, we can discuss further preventative options too.
This information is grounded in NHS and TravelHealthPro (NaTHNaC) guidance and is for general information — not a substitute for a personal consultation. Your travel consultation is carried out by our pharmacist.
Flying long-haul soon?
Call us on 0161 748 3016 or drop into Davyhulme Pharmacy in Urmston for friendly, no-fuss advice on travelling safely.