No need to really update this with new info as it still is valid as of 2017
Never and I mean NEVER buy tickets at the flight desk and travel agents do not work for free, the best way is online if you have a debit/credit card then buy your fare online and save hundreds per ticket.
So I was in a hurry but the delta agent quoted me a fare price to the UK at over $1700 bucks per ticket,gasp I nearly passed out gotta real cold feeling all over I then said I will get back to you on that later.
Yup as if! I went online and bought two tickets on the same flight on the same day to the same place for $300 bucks each that's $600 yup I saved $1100 bucks and never broke a sweat in fact I kinda felt like I just broke there neck by accident,not.
So what would you do, I had $1100 bucks of extra travel money in my pocket, story ended.