Hi Catherine, It’s best to be conservative and not fly when your eyeballs are swollen. When did you have your eyelid surgery? It is strongly recommended that you stay within 30 minutes of the surgery center where you had your procedure done, for at least 5-6 days after the procedure. While chemosis is relatively common after lower blepharoplasty and is treatable with steroid or anti-inflammatory drops and lubrication, it can take a week or two for the lymphatics to work normally again. Since the air inside the cabin of a plane has a humidity level of 10-20% (much lower than a comfortable typical humidity of 30-65%) you can expect to be dehydrated which can cause problems like dry skin and scratchy eyes. Being in a low-humidity environment has another potential problem – you’re at increased risk of catching a respiratory virus like a cold. When the air you breathe is too dry, the mucous in your airway can’t do its job, and viruses or bacteria can enter more freely. Lastly, it would be best to have at least one postoperative visit with your surgeon prior to flying home.