Are varicose veins dangerous when flying?

Having varicose veins does not automatically mean that flying is dangerous.

Many people with varicose veins travel by plane without developing a serious complication.
However, long-distance travel involves prolonged sitting, and reduced movement can slow venous
blood flow in the legs.

This matters because blood returning from your legs towards your heart relies partly on movement
of the calf muscles. When you walk, the calf muscles repeatedly contract and help move blood
upwards through the venous system.

When you remain seated for several hours, this mechanism becomes less active.

The question is therefore not simply:

“Do I have varicose veins?”

It is also:

“Do I have additional risk factors that could increase my risk during
prolonged travel?”

If you are unsure whether the veins on your legs are varicose veins or another type
of visible vein problem, read our guide to

varicose vein symptoms and causes
.

Why can long flights affect circulation in your legs?

The main issue with long-distance travel is not the aeroplane itself.
It is the prolonged period of restricted movement.

During a long flight, passengers may remain seated for several hours with relatively
little movement of the legs.

Venous stasis — slower or relatively stagnant blood flow — is one of the factors involved
in the formation of venous blood clots.

This is why long journeys by plane are not the only type of travel associated with concerns
about DVT.

Similar issues can occur during long journeys by car, coach or train when a person remains
relatively immobile for several hours.

Travel lasting more than four hours is commonly used in medical guidance when discussing
long-distance travel and blood-clot risk.

Do varicose veins increase your risk of DVT when flying?

Varicose veins and deep vein thrombosis are different conditions.

Varicose veins are enlarged superficial veins, usually caused by abnormal venous function
and reflux.

A deep vein thrombosis (DVT) is a blood clot that develops in a deep vein,
most commonly in the leg.

A DVT becomes particularly dangerous if part of the clot travels to the lungs,
causing a pulmonary embolism (PE).

Varicose veins are recognised as one of a number of factors associated with DVT risk,
but your individual risk cannot be determined simply by looking at the veins on your legs.

Other factors that may increase DVT risk include:

• a previous DVT or pulmonary embolism;
• recent surgery or significant injury;
• limited mobility or prolonged immobility;
• active cancer or recent cancer treatment;
• pregnancy and the postpartum period;
• oestrogen-containing contraception or hormone replacement therapy;
• an inherited or acquired blood-clotting disorder;
• a family history of venous thromboembolism;
• older age;
• obesity;
• certain chronic medical conditions.

Risk becomes more relevant when several factors occur together.

This is why two people with similar-looking varicose veins may receive very different
travel advice based on their medical history.

Who should speak to a doctor before flying?

Most people do not need a specialist consultation simply because they are taking a flight.

However, personalised advice is particularly important if you have varicose veins together
with other medical risk factors.

Consider speaking to a healthcare professional before a long journey if you:

• have previously had a DVT or pulmonary embolism;
• have recently undergone surgery or a medical procedure;
• have recently been significantly immobile;
• have active cancer;
• have a known thrombophilia or clotting disorder;
• are pregnant or recently gave birth;
• have marked leg swelling;
• have unexplained pain in one leg;
• have recently developed significant new vein symptoms;
• are already taking anticoagulant medication;
• have several additional risk factors for thrombosis.

A healthcare professional can assess the complete clinical picture rather than making
a recommendation based on the appearance of your varicose veins alone.

How can you reduce leg discomfort and circulation problems during a flight?

For most travellers, the most practical strategy is to avoid remaining completely
immobile for very long periods.

Simple seated exercises

Even when you cannot leave your seat, small movements can keep your calf muscles active.

You can periodically:

• flex your ankles by pulling your toes towards you;
• point your toes away from you;
• make circles with your ankles;
• raise and lower your heels;
• change the position of your legs regularly.

On long journeys, regular movement is more useful than waiting until your legs already
feel stiff or swollen.

Should you wear compression stockings when flying with varicose veins?

Compression stockings can be useful for some travellers, but they should not be treated
as a universal requirement for everybody with visible varicose veins.

Graduated compression applies the greatest pressure near the ankle and progressively
less pressure higher up the leg.

This can help support venous blood flow and may reduce swelling in selected people.

Who may benefit from compression stockings when flying?

They may be considered particularly when a person has increased risk factors for venous
thrombosis or experiences significant leg swelling during travel.

However, the correct type, pressure and size matter.

A stocking that does not fit correctly may be uncomfortable and may not provide the
intended graduated compression.

If you have significant vascular disease, previous thrombosis, arterial circulation problems,
recent surgery or other relevant medical conditions, ask a healthcare professional which
type of compression is appropriate before buying stockings based solely on an online recommendation.

Can flying make varicose veins worse?

Flying does not necessarily cause permanent progression of varicose veins.

However, prolonged sitting can temporarily make some vein-related symptoms more noticeable.

After a long journey, some people may notice:

• increased ankle or lower-leg swelling;
• a feeling of heaviness in the legs;
• aching or discomfort;
• a sensation of tightness;
• temporary worsening of existing venous symptoms.

These temporary symptoms are not necessarily the same thing as permanent progression
of venous disease.

However, persistent or one-sided swelling, unexplained calf pain, warmth or redness
should not simply be dismissed as “normal after flying”.

Learn more about symptoms that may be associated with vein disease in our guide:

varicose veins symptoms and causes
.

Can you fly after varicose vein treatment?

There is no single universal waiting period that applies to every patient and every
type of varicose vein procedure.

Advice depends on factors including:

• the procedure performed;
• your individual risk of thrombosis;
• how recently treatment was performed;
• whether you have any complications;
• your level of mobility after treatment;
• the duration of the planned flight;
• your previous history of DVT or PE.

Flying after EVLA

Endovenous Laser Ablation, or EVLA, is a minimally invasive treatment used to close
incompetent varicose veins.

Many patients are mobile soon after treatment, but this does not mean that one fixed
flying interval is appropriate for every patient.

Follow the specific travel advice provided by your treating vein specialist.

Flying after foam sclerotherapy

Ultrasound-guided foam sclerotherapy is another treatment used for selected varicose veins.

Travel advice should take into account the extent of treatment, your medical history
and the duration of your planned journey.

Learn more about

foam sclerotherapy for varicose veins
.

Flying after phlebectomy or other vein procedures

Different procedures involve different levels of intervention and recovery.

Do not assume that advice given to someone who had a different vein treatment automatically
applies to you.

For a broader guide to recovery, read:

recovery after varicose vein treatment and surgery
.

What symptoms should you never ignore before or after a flight?

Most leg discomfort after a long journey is not caused by a blood clot.

However, it is important to recognise symptoms that could require urgent assessment.

Possible symptoms of DVT can include:

• new swelling, particularly in one leg;
• unexplained pain or tenderness;
• warmth in the affected area;
• redness or skin discolouration.

Possible symptoms of pulmonary embolism can include:

• sudden or unexplained shortness of breath;
• chest pain, particularly pain that worsens when breathing in;
• rapid or irregular heartbeat;
• coughing, including coughing up blood;
• light-headedness or fainting.

Do not wait for a routine vein appointment if symptoms suggest a possible acute DVT
or pulmonary embolism.

Should you treat varicose veins before a long-haul flight?

Having an upcoming flight does not automatically mean that your varicose veins need treatment.

Varicose vein treatment should be based on your diagnosis, symptoms, clinical findings
and, when appropriate, duplex ultrasound assessment rather than simply the fact that
you are planning to travel.

However, assessment may be worthwhile if you have:

• significant or worsening varicose veins;
• persistent swelling;
• aching, heaviness or discomfort;
• skin pigmentation or eczema around the lower leg;
• recurrent superficial thrombophlebitis;
• previous venous complications;
• concerns about your individual risk before frequent or long-distance travel.

A specialist can determine whether your symptoms are related to underlying venous reflux
and whether treatment is clinically appropriate.

Learn more about

modern varicose vein treatment options
.

Frequently asked questions about flying with varicose veins