<p>I frequently fly internationally. My strategies include:</p>
<p>Compression socks - makes a big difference with leg cramps, restless legs and swelling. You can buy them without the foot part if you want to wear them with flip-flops or sandals. The footless compression socks are used by bikers and I had to order them out of a catalog. The footed ones can be had at most pharmacies.</p>
<p>Slip-on shoes - If I can, I wear my most comfortable flip-flips. If not, then any other slip-on shoes so I can take them off when I’m seated.</p>
<p>Walking - When not sleeping, I get up and walk once an hour. </p>
<p>A neck pillow - I find these easiest to sleep with because they keep your head from bobbing.</p>
<p>Xanax - I’ve been known to sleep an entire 12 hour flight with the help of xanax.</p>
<p>Toiletries - I think it really helps if you can freshen up a bit before landing. Toothbrush, washing the face, whatever will help you feel less grungy after the flight.</p>