Originally Posted by number_6

I was looking at the schedule (not wanting to buy a ticket yet) and used the reservation link from some QF web site (maybe http://www.qantasusa.com ) and was surprised/pleased to see that the fare code showed up after the flight number (so it appeared as 94S instead of 94). Maybe it was an experiment, but it definitely happened (and I've never seen any airline use that format before, appending the fare code to the flight number).