Plane advice

Hi there. My LO will be almost 5 months when we board the plane. I will be formula because he's on special formula. Does any one have any tips about formula feeding on a plane. The flight is about 6-7 hours. How did they manage the formula, or boiled water. Did they make pre prepared bottles. Any tips would be greatly appreciated. I'm a FTM and very anxious about flying for the first time with him especially formula feeding. Also any tips about flying with LO is great too. Thank you