Hmm...The Weather Channel/Weatherbug are my fav weather apps although there are several hundred different weather apps in the store. As some previous posters said, most airlines, and even some hotel chains, have their own apps so you should download whichever one you are most likely to frequent on your travels. I'm partial to the Orbitz app since I use that a lot for booking hotels/flights, etc. There is also a USA Today app (can't remember the exact name of it) but it functioned as your personal travel "assistant" and would keep you updated on flight delays and such. All these are free apps so you can try them out and see if they work for you.