We always travel with a zipped plastic bag filled with a couple dozen packets of Germ-X wipes (Boxes of 100 packets of Purell wipes avail on Amazon for about $16 for 2 boxes). Other links in on this website share advice or flight attendants, who recommend a thorough cleaning of armrests, tray tables, and seatbelt buckles when you first enter your row. (After you’ve done all that, you’ll want to use a fresh wipe for your hands. I use that second wipe to clean my air vent before discarding.)

WATCH: Here’s The One Thing You Should Never Board a Plane Without