It is important that you know how to use your insulin pump. Many people do not get the proper amount of insulin because they are not using their pump correctly. If you do not know what you are doing, do not feel ashamed to ask your doctor or another health professional, for help.
If you have diabetes, it is very important to take great care in managing what you eat. Different foods affect glucose levels differently, and you will need to carefully scrutinize your food choices. Large meals require large insulin injections but smaller meals require smaller insulin injections. It is possible to actively manage glucose levels if you are careful about what you eat.
To make sure your diabetes doesn't cause issues during a long flight, always pack a snack. While some airlines offer free meals, the food can be heavily processed, and you may have to wait a long time to be fed. Bringing your own snack will ensure that your glucose levels stay where they're supposed to be.