Airlines can provide information on the times of most meals so you can plan your insulin. It is best to order the standard meal, though this may not supply you with enough carbohydrate if you are on insulin or certain diabetes tablets. Cabin crew are usually able to provide fruit, crackers or rolls.
On long flights, you may require snacks in between meals and at bedtime to prevent blood glucose levels going too low, so try to carry extra starchy carbohydrate foods, such as biscuits, cereal bars or fruit buns, on board the aircraft. For the journey, some people allow their blood glucose to run slightly higher than usual to avoid the inconvenience of hypos. If you are on insulin, monitor your blood glucose levels frequently and be prepared to make changes to your dosage.