First of all, always bring some snacks with you for the flight. For those who are fortunate enough to be traveling on first class Tokyo flights or Manila flights in business class, the on board food options will be wonderful. However, for the many people who are traveling in economy class, airplane food can be underwhelming with very few options. It can really make your flight more enjoyable to have a few items with you so that you can eat them in addition to your airplane meal, or even skip the meal provided to you if it isn't something that you'll enjoy. You will also save money by packing a few snacks for the trip and avoiding expensive airport food purchases.
Be certain that you have all of your luggage with you! There are countless stories of people who arrive at the airport late and rush from their car without realizing that one of their bags is still in the trunk. This is an awful realization to have once it's too late, so be sure to double check your car to ensure that you have all of your belongings with you before you enter the airport.
Another essential thing to think about is when your passport will be expiring. Many countries won't allow you to visit without at least 6 months before your passport expiry date, so be absolutely certain that you have this leeway. Don't get stuck begging for entry access at security as you may very well be turned back and miss your flight. It's well worth being careful that your passport doesn't expire for at least 6 months after your departure date.
Lastly, make sure that your luggage is tagged appropriately. You should have some sort of contact information on there, such as your email address or phone number, even if you plan to carry it on the airplane. You never know when your bags can be misplaced and many travelers who lose their bags will have them returned as long as this information is there. Remember that regardless of whether you are booked on Manila flights, Paris flights, Tokyo flights or flights to any other destination, taking the care to follow these steps will help you to avoid some of these common problems during your trip.