First-class air travel. You may have to show the agent the foreign ticket. Carry your medical history. Fold a one-page summary of health data into your passport. Don't buy travel insurance at airports.
Coverage is much more expensive and rates vary from city to city.
It indicates that the travel agent has only requested a seat, and wait-listing status is a possibility. Avoid consuming the food and drink offered on airplanes. Alcohol, nuts, soft drinks, and other foods that have empty calories can cause a swing from high to low blood sugar. You go from feeling great to feeling tired, cramped, and headachy. Alcohol has more punch during an airplane flight than on the ground.