The BCD Travel Flights Complete Verification Java Sample Code demonstrates how to access the API. Developers can use the endpoint during the payment/check-out process of a flight booking. They can verify payment and confirm the status of a flight reservation.
Flight price tracker Yapta's value proposition sounds a bit like Robin Hood of the travel industry. It will not only track travel prices for you, but to help you get a refund should the price of your reservation fall after you’ve booked it. I wouldn’t be surprised if Yapta can also be used to retrieve kittens from high branches, but that part of the Yapta API isn’t documented yet.