Compression Socks for Flying: Do You Need Them and How to Wear Them

You land after a long flight, try to put your shoes back on and they feel two sizes too small. Swollen ankles and heavy, stiff legs are very common after flying. That is why so many travelers pack compression socks for flying. Here is why your legs swell on planes, who benefits most from compression and how to make your next trip more comfortable.

Why do legs swell on long flights?

When you sit for hours with your knees bent, your calf muscles barely move. Those muscles normally act like a pump, pushing blood back up toward your heart with every step. Without that pumping action, fluid collects in the lower legs and ankles. Low cabin humidity, salty snacks and alcohol can add to the puffiness. The Mayo Clinic notes that sitting for long periods is a common cause of edema (swelling).

How compression socks help when you fly

Compression socks apply gentle, steady pressure to your feet, ankles and calves. That support helps limit the swelling and heavy feeling that builds up while you sit, so your legs feel fresher when you land. MedlinePlus explains how compression stockings are used.

Who benefits most from compression socks for travel?

• Anyone on flights longer than about 4 hours
• People whose ankles usually swell when traveling
• Older adults and people who are less mobile
• Pregnant travelers, with their doctor's okay
• People with varicose veins or tired, achy legs
• Anyone who has recently had surgery or has other clot risks, only after talking to their doctor

Important: if you have had a blood clot before, have a clotting disorder, recent surgery, cancer or other risk factors, talk to your doctor before you fly. They may recommend a specific compression level or other precautions. Seek medical help right away for calf pain, warmth, redness or one-sided leg swelling during or after travel, or sudden shortness of breath.

When to put on compression socks for a flight

Put them on the morning of your trip, before you leave for the airport. Your legs are least swollen in the morning, so the socks go on more easily and work better. Keep them on for the whole journey, then take them off when you reach your destination and can move around.

Choosing the right socks for travel

Our AIR+ Lightweight Bamboo Compression Socks are made for travel: thin, breathable and extra-stretchy. If you prefer a softer, thicker sock, try EASE+ Bamboo Compression Socks. Runners and active travelers sometimes prefer a calf compression sleeve with their own socks.

8 in-flight tips for comfortable legs

1. Choose an aisle seat when you can, so it is easy to get up.
2. Walk the aisle every hour or two when the seatbelt sign is off.
3. Do seated exercises: ankle circles, heel raises and toe raises, 10 at a time.
4. Drink water regularly and go easy on alcohol and salty snacks.
5. Avoid crossing your legs for long periods.
6. Wear loose, comfortable clothing and shoes you can slip off.
7. Keep bags out of your foot space so you can stretch your legs.
8. After landing, take a short walk and put your feet up for a while.

Frequently asked questions

Do I really need compression socks for flying?

Not everyone does, but many travelers find their legs feel noticeably better on long flights. They are especially helpful if your ankles tend to swell.

Can I wear compression socks on short flights?

Yes. They are most helpful on longer flights, but there is no harm in wearing comfortable compression socks on short trips too.

Should I sleep in compression socks on an overnight flight?

Yes, if they feel comfortable, because you are sitting with your legs down. At home, most people don't need them overnight. Read can you sleep in compression socks for more.