If you are meeting a friend or family member at the airport, it's useful to have their flight number. Having their flight number makes it more convenient to track flights and to keep abreast of any delays. The person you are expecting may not have given you the flight number in advance. If you know just a few key facts about the flight, it's easy to look up the flight number online.
Gather any information you have about the flight. This includes the airline, flight time, departure and destination, as well as any connections. The more information you have, the more easily you will be able to find the flight number.
Visit the airline's website. Airline websites will have a flight status or gate and times search tool on their front pages, enabling you to look up a flight number. Input your information into the fields and press "Search."
Look through the list on the next page. The website will usually list the flight number on the left-hand side of the list. In many cases, the website will display more than one flight. Having the exact flight time, as well as information regarding any connections, will help you to pick the right one.