I'm in need of the travel bargain experts

[Neoshoegal]

There's a convention in Orlando which we would like to go to, but it's in August which is a pain for 2 reasons: it's the middle of our busiest season for work and it's also an annoyingly expensive and busy time to travel. However, it would be great if we could make the convention, even considering flying economy despite my issues with flying.

So if anyone has any spare time, these are the dates:
Convention is 23-26 August
We can arrive from 21 August to 23 August. We can leave from the 26th after 7 or 8 pm or a day later. Don't have time to stay longer (unless it would save us a ton of money).
We can fly from Manchester, London, ... anywhere in between.

We don't really need a hotel as we'd probably be staying in the convention hotel, however, if a deal with hotel turns out cheaper (I know this sometimes happens), we're ok with that.

Now here's the annoying thing. Due to me having issues with flying, we really would prefer a regular carrier, so no First Choice or Thomas Cook please.
We are willing though to fly to any "nearby" airports, which includes Miami.

And if anyone can find a corker of a business class deal (kind of like the one Wayne got last year), I'll be sending you a load of really great Belgian chocolate!