Travel app Expedia will have Apple Watch app ready to use by April 24th launch
According to Expedia, the app will send you notifications about gate changes for your flight, or if there is a delay. Expedia Glance will let you see all your important information at a (ahem) glance. Swipe up from the bottom of the watch dial and scroll left or right to see your Expedia Glance. There you will find the most important and relevant info such as hotel check-in and check-out times, and you can also find out if your room is ready to be occupied.
In addition, the Expedia app on Apple Watch will show you your itineraries for upcoming trips. You can also see detailed information such as flight numbers, departure and arrival times, gate numbers and terminals. Hotel information includes maps, directions and phone numbers.