I recently had some long haul flights (10+ hours) and decided to try out compression socks. My ankles and feet often get swollen after long flights. I don’t follow the tips to avoid that as much as I should, like skipping alcohol and anything salty. I really like that glass of wine before a long flight, it helps me fall asleep!
Compression socks come in lots of different colors and patterns now, and some are “sleeves” that are footless. From the reviews I read, the ones with feet are the best if you experience swelling feet (which I do). I opted for these plain black ones. Rather than pick an outfit that goes with knee-high socks, I took mine in my carry on and just pulled them on for the flight after I was all settled in my seat.

(I actually pulled them on under my pant legs.) I could feel them squeezing my calves but not so tight that it was uncomfortable or even that noticeable. They aren’t too thick or warm. I slipped my shoes on over them when I needed to get up or use the restroom.
So how did they work? I give them a B+. I wore them on a 14 hour flight with no swelling afterwards – but I had a lay flat seat. The true test was on a 10 hour flight where I had an economy seat with limited recline, and still chose to partake in wine and salted peanuts. My feet were a tiny bit swollen after that flight – definitely better than I’ve experienced in the past though, and it went away quickly.
I’m happy with my purchase and will definitely continue to use them.