Many countries already have pandemic preparedness plans in place and most will start with closing all ports, stopping travel etc.
Unfortunately, given the time of 2-10 days that you can be infecting other people before you show any symptoms, it will be way too late to try and stop it spreading that way.
In answer to the original question:
SARS was a puppy compared to H5N1 and it's pandemic potential. If we have a H5N1 pandemic expect to see a lot of pilots (and others) sitting around twiddling their thumbs.