Flight and passenger details To book your flights online, you will need some basic information of the destination you'll be flying to, and your departure and return dates. You will, of course, also need all of your personal details that will appear on your flight ticket.

In most cases, you cannot finalize a flight booking without providing basic passenger details like the legal name (as it appears on a passport) and often a date of birth. Airlines require this information upfront for security screening against "no-fly" lists and to generate the PNR. However, some travel agencies and airlines offer a "Fare Lock" or "Hold My Fare" service, which allows you to reserve a price for 24–72 hours for a small fee without entering all traveler information immediately. In 2026, many Indian airlines, under revised DGCA rules, now offer a 48-hour "cool-off" window after booking, during which you can modify details or cancel for free. While you can't "buy" a seat for a nameless person, these hold systems provide flexibility if you are still waiting for a companion's passport details. It is critical to ensure the name matches the ID exactly, as name changes after the "cool-off" period can incur heavy fees or require a total rebooking.