The travel and hotel search engine Hipmunk has updated its iPhone and Android apps with calendar integration from iCal, Google Calendar and Microsoft Outlook. This means when you're searching for flights and hotels you can do so with your daily calendar right in front of you.
Your calendar is integrated right underneath the search results so you can see what flights might interfere with your schedule. The hotel search also gets a boost and if your appointments have addresses attached to them the app will show you the closest hotel. It's a small, but handy feature that helps you plan everything a little smoother. The webapp updated with Google Calendar integration last year, but this expands it further. Hipmunk is a free download for iOS and Android.