Blog 

Long flights are hard on your legs. The right compression socks for flying can make the difference between landing refreshed and landing with swollen, aching ankles. Here's everything you need to know — plus the flight socks we'd recommend.

Why your legs struggle on long flights

When you sit still for hours at a time — exactly what a long-haul flight forces you to do — blood flow in your lower legs slows down. Gravity pulls fluid toward your feet and ankles, your calf muscles stop doing their usual "pumping" job, and the result is the all-too-familiar swelling, heaviness and discomfort that sets in somewhere over the ocean.

For most people this is just uncomfortable. But prolonged immobility on flights is also linked to a small increased risk of deep vein thrombosis (DVT) — a blood clot that forms in the deep veins of the leg. That's why circulation socks have become a travel essential for frequent flyers, not just a comfort item.

Do compression socks help on flights?

Yes. Graduated compression socks are designed to be tightest at the ankle and gradually looser up the calf. This gentle, structured pressure helps push blood back up toward the heart instead of letting it pool around your feet. The benefits on a long flight are practical and noticeable:

Better circulation — supporting healthy blood flow when you can't get up and walk around

Less swelling — reducing the puffy ankles and tight-shoe feeling on landing

Lower DVT risk — improved flow helps reduce the chance of travel-related clots

Less fatigue — your legs feel lighter and less achy after you arrive

If you want flight socks that tick every box above without the medical-grade price tag, these are our top picks from the 360 Relief range — all knee-high, all graduated 15-20 mmHg, and all designed with long flights in mind.

1. 360 Relief Flight Compression Socks — best all-rounder

Our most popular travel sock and a genuine traveller favourite. These knee-high flight socks deliver graduated 15-20 mmHg support, are made from a lightweight, breathable, sweat-absorbing blend, and come with a reusable mesh wash bag that doubles as suitcase organisation. Comfortable enough to keep on for the whole journey, supportive enough that your ankles thank you on landing. Ideal for women and men.

2. 360 Relief Copper Compression Socks — best for odour control

Same trusted graduated compression, with copper-infused fabric for extra freshness on those back-to-back long-haul days. A smart pick if you're connecting through multiple flights or heading straight from the airport to a meeting.

3. 360 Relief Open-Toe Compression Stockings — best for warm climates

Prefer your toes free, or flying somewhere hot? These open-toe graduated compression stockings give you the same circulation support with a bit more breathability — popular with travellers, nurses, and during pregnancy.

How to wear flight socks (get the most from them)

Put them on before you leave for the airport — before any swelling starts, ideally first thing in the morning.

Smooth out any wrinkles so the compression stays even along your leg.

Stay hydrated and move when you can — flex your ankles, and take a short walk down the aisle every couple of hours. The socks do the heavy lifting, but a little movement helps.

Keep them on until you land (and a little after, on really long journeys) for the full benefit.

Who should wear compression socks for flying?

Flight socks aren't just for medical needs. They're worth packing if you are:

Taking any flight over 4 hours

Pregnant and travelling

Prone to swollen ankles, varicose veins or heavy legs

A frequent flyer, cabin crew member, or business traveller

If you have a diagnosed circulatory condition, a history of DVT, or you're pregnant, it's always worth a quick chat with your doctor about the right compression level before you fly.

What to look for in flight socks

Not all compression socks are equal. Here's what actually matters when you're choosing socks for flying:

Compression level (mmHg). For travel and everyday flying, 15-20 mmHg is the sweet spot — firm enough to support circulation, gentle enough to wear comfortably for a 10-hour flight. Higher medical-grade levels (20-30 mmHg and above) are usually only needed on a doctor's advice.

Graduated compression. The pressure should be strongest at the ankle and ease off up the leg. This is what makes graduated compression socks work — flat, even pressure simply doesn't move blood the same way.

Knee-high length. For flights, knee-high socks give you proper calf coverage where circulation support matters most.

Breathable, moisture-wicking fabric. You'll be wearing these for hours in a dry cabin. A lightweight, sweat-absorbing, anti-slip blend keeps feet dry and comfortable and helps prevent odour and blisters.

The right fit. Measure the widest part of your calf to get your size right. Too small and they're a battle to put on; too large and you lose the compression that makes them work.

Best compression socks for flying

If you want flight socks that tick every box above without the medical-grade price tag, these are our top picks from the 360 Relief range — all knee-high, all graduated 15-20 mmHg, and all designed with long flights in mind.

1. 360 Relief Flight Compression Socks — best all-rounder

Our most popular travel sock and a genuine traveller favourite. These knee-high flight socks deliver graduated 15-20 mmHg support, are made from a lightweight, breathable, sweat-absorbing blend, and come with a reusable mesh wash bag that doubles as suitcase organisation. Comfortable enough to keep on for the whole journey, supportive enough that your ankles thank you on landing. Ideal for women and men.

2. 360 Relief Copper Compression Socks — best for odour control

Same trusted graduated compression, with copper-infused fabric for extra freshness on those back-to-back long-haul days. A smart pick if you're connecting through multiple flights or heading straight from the airport to a meeting.

3. 360 Relief Open-Toe Compression Stockings — best for warm climates

Prefer your toes free, or flying somewhere hot? These open-toe graduated compression stockings give you the same circulation support with a bit more breathability — popular with travellers, nurses, and during pregnancy.

How to wear flight socks (get the most from them)

Put them on before you leave for the airport — before any swelling starts, ideally first thing in the morning.

Smooth out any wrinkles so the compression stays even along your leg.

Stay hydrated and move when you can — flex your ankles, and take a short walk down the aisle every couple of hours. The socks do the heavy lifting, but a little movement helps.

Keep them on until you land (and a little after, on really long journeys) for the full benefit.

Who should wear compression socks for flying?

Flight socks aren't just for medical needs. They're worth packing if you are:

Taking any flight over 4 hours

Pregnant and travelling

Prone to swollen ankles, varicose veins or heavy legs

A frequent flyer, cabin crew member, or business traveller

Recovering from surgery or have a history of clots (check with your doctor first)

Frequently asked questions

Are flight socks and compression socks the same thing?

Essentially, yes. "Flight socks" is just the everyday name for graduated compression socks worn for travel. Look for 15-20 mmHg graduated compression and you've got the right product.

When should I put my flight socks on?

Ideally before you leave home, when your legs are least swollen. Keep them on for the whole flight.

Can I wear compression socks on a short flight?

You can, and there's no harm in it — but the biggest benefits show up on flights over four hours, where you're sitting still the longest.

What compression level do I need for flying?

For most travellers, 15-20 mmHg is ideal. Only go higher if a healthcare professional has advised it.

Can I reuse and wash them?

Yes. Hand wash or use a gentle machine cycle in cool water (a mesh wash bag protects them), and avoid tumble drying so they keep their stretch and support.

Ready for your next flight?

Don't let achy, swollen legs ruin the first day of your trip. A good pair of compression socks for flying is one of the cheapest, easiest upgrades you can make to long-haul travel — and 360 Relief flight socks give you trusted, graduated support that's comfortable from take-off to touchdown.

Shop the full flight socks range at 360relief.co.uk