Visit Seat Guru

• Seat Guru contains seating plans and descriptions of every plane owned by major airlines. Clicking on seats in the economy- and premium-class sections lets you view seat measurements as well as advantages and disadvantages of each location.
  
  

Check Airlines

• Visit individual airline sites to find test descriptions, pictures and virtual tours of their classes. For example, Virgin Atlantic not only provides useful information but allows you to book tickets directly from its site if you find something that you like.
  
  

Call Travel Agents

• Your local travel agent can advise you based not only on her personal travel experience but through those of her clients. If you cannot find one near you, contact the American Society of Travel Agents, which lets you search by zip code on its website.