From their site: Yahoo! Travel is also launching API access to trip planner data through a REST-like interface. With the Yahoo! Travel Trip Plan APIs you can search for trip plans by Yahoo! ID or by search query, or retrieve a specific trip plan by ID.
The Yahoo! Travel Trip Plan APIs have been designed to operate just like the Yahoo! Search APIs, so if you've already written code for Yahoo! Search you can start using Travel almost immediately with only minor modifications. And just like Yahoo! Search, the Yahoo! Travel APIs support both XML and JSON output.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.