You can readily identify an e-Passport, because it has a unique international symbol on the cover. Electronic System for Travel Authorization (ESTA) ESTA is an automated system that determines the eligibility of visitors to travel to the United States under the Visa Waiver Program (VWP). Authorization via ESTA does not determine whether a traveler is admissible to the United States.
Two to three weeks before the flight date, the price quotes start increasing. This is the time when business travelers start booking. While price drops are still possible, a chance of a price increase is much higher if you wait to book within this time period.
The Falling Cost of Flying. After adjusting for inflation and adding in baggage and change fees, domestic airfares excluding taxes have risen 16 percent since 2005, but they are still 39 percent lower than they were in 1980. Average domestic roundtrip airfare, in 2013 dollars.