CGI - Super Hero FLYING SEQUENCE

We need CGI sequences for a short film. The film involves a super hero who in one scene is shown taking off, flying through the sky and landing. I need this sequence to look as realistic as possible. And most importantly need to know from you - what we need to capture 'in camera'. Do we need to shoot on green screen? Do we need to shoot at location or in studio to achieve the correct transitions? Please only bid for this if you can give a detailed description on how you would carry out this work and more importantly what we need to shoot. Our shooting dates are very soon - so please let us know if you can do this job ASAP. Please provide examples of work.