Airport stores are unbelievably pricey, so if you don’t feel like paying an arm and a leg for a little bag of trail mix, make sure you visit a regular grocery store before setting foot at the airport.
Stock up on light snacks and bring an empty water bottle or two.
Look Around for Entertainment
Many airports around the world offer some forms of entertainment or attractions for free. Art exhibitions, play areas for kids, and musical performances.
Do your homework and try to find out what kind of freebies your airport has to offer. You might have some walking to do from one attraction to another, but you have some time to burn until your plane leaves anyway.
Consider the Lounge
If you know you'll have many dead hours (or even a day) to spend at the airport, an all-day lounge pass could be your best friend. Most airlines sell those passes for about $50, which may not be that expensive when you learn that Americans spend an average of $141 per person whenever they walk into an airport.
Your airline lounge is located away from the flashy stores and temptations around, making it easier for you to hold on to your cash. Plus, it's comfortable and equipped with food, drinks, and wifi.
No to Screens, Yes to Paper
The blue light emitting from most standard screens often plays unkind games with our ability to fall asleep.
If you are counting on successfully dozing off for at least some of the duration of the flight, focus your other pastime activities on non-screen activities. A book/magazine and some crossword puzzles are a good place to start.
Pack All Chargers
Before you leave the house, double-check (or even triple-check) you packed all of the chargers for your smartphone, iPad, Kindle, or whatever else you're taking with you that needs to be charged.
Those who forget a charger and have to get one at the airport will pay a lot more than it's worth. Now you won't start wandering around the stores, going off-budget before even leaving the country.