Hit the road, Jack: Best Android apps for summer travel and vacation
While the bigwigs like Google Maps or Bing can get you there, Waze is one of the few that actually show you what is happening right now, where to find the cheapest gas in the area, and so on. You can sync your location, destination and ETA with others, so that Christmas family reunion or camping trip gets easier, at least the driving part of it.
Its strongest point are flights, and if you can find a cheaper ticket somewhere else, it will probably be some chartered discount carrier that is under everyone's radar. The excellent Android app is very easy to use with a tailor-made for the purpose UI.
5. R Travel
These off-the-beaten-path travel itineraries could very easily become the vacation of your lifetime, escaping the traditional fancy hotel and overcrowded destinations paradigm, plus you often get to learn amazing things in the process.
It has text-to-speech function to help you with pronunciation, and the Pro edition allows you to carry all dictionaries and voices on your SD card, so you get the same capabilities when you are not connected to the Internet.