Originally Posted by moondog

i've never once seen f discounted, but if you are: 1) hooked up; 2) charming; or 3) tall, you might have a shot at a gratis upgrade.

the baggage allowences are definitely higher (effectively limitless, even). so, if full fare or close to it is all that's on offer, the f ticket might make sense.

i just spot checked all of the segments you mentioned; the first and the last are heavily discounted; the second requires a connection (might want to refine your schedule because connections suck), and the third appears to be discounted by less than 30% on most days (so, if you are dying to experience first class, this might be your best opportunity).