The Tripian City List Curl Sample Code demonstrates how to interact with the API to access over 200 cities world-wide. Each city has a unique id (city_id) to create trips, trip-related questions, and get quick recommendations.
Have you had to pick someone up from the airport only to end-up doing several laps of the airport because the flight was late? This sort of setback due to arrival delays is one of those modern day inconveniences that FlightCaster and their FlightCaster API hope to eliminate.
Riders on New York City subways are subject to all sorts of sights. For several months, that has included prominent advertisements for the MTA API, the developer program of New York City's transit company. The ad (pictured below) includes the headline, "Our apps are whiz kid certified."