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.
Flight prices almost never drop as time gets closer. You have to understand how ticket prices are computed nowadays. Last minute fliers are generally more likely to be business travelers or they have emergencies that they are willing to pay more. Airlines takes advantage of this and price the ticket much higher. I would say for domestic flights, you should try to purchase 2 weeksâ2 months ahead of time and international flights 2â6 months ahead. If you do not wish to monitor the flight prices yourself, you can sign up for a flight deal alert services such as Flight Deals Hound.