From Longman online dictionary:
Travel (uncountable noun) and travelling are used to mean the general activity of moving from place to place
� Air travel is becoming cheaper.
� Her work involves a lot of travelling.!!
You do not say �a travel �.
Use journey to talk about travelling a long distance or travelling regularly, when the emphasis is on the travelling itself
� a long and difficult journey (NOT travel) through the mountains
� I read during the train journey to work.
� Did you have a good journey? (=Were you comfortable, was the train on time etc?)
A trip is when you go on a short journey, or a journey you do not usually make, and come back again. Use this when the emphasis is on where you are going or why you are going there
� my first trip to the States
� a business trip
� Was it a good trip? (=Did you achieve what you wanted to or have a good time there?)
