You can use one of those insulated bottles. Idk if you can travel with it so I would keep it in a cool baby bottle and immediately transfer or you can just buy some at the airport usually they sell milk.
Bring your insulated bag. After security if there's a starbucks there you can just ask them to fill your bag with ice. Or bring ziploc so they will fill that instead.
Probably a cool bag to keep it close fo refrigerated xx