Get a travel medical insurance for any health problems or emergency incidents during the travel. Hospitalization and other medical expenses can be costly in your travel destination.
Research about the place of your destination, check the climate. Bring appropriate and comfortable clothes based from the climate condition of the place.
Bring basic medicines you do not know when you will need one.
Make sure that all have enough sleep and rest before the flight date. Travel abroad can take long hours and fatigue.
Provide a relative or close friend about your itinerary, contact details, and other pertinent information while on trip so you can be contacted in case of emergency back home.