Finding a cheap flight to Africa from the UK is easy if you follow some basic rules. There aren't too many airlines servicing the continent, so flights book up really quickly. A decent airfare to most destinations in Africa, from the UK, should run about $1200-$1400. If you are traveling to Lagos or Accra, your fare should be between $800-$1000.
Here are a few tips to get a cheap flight to Africa and still find a seat:
Book in Advance
This is especially the case for African countries with small tourist industries...
Book your flight at least two months in advance especially if you are planning to travel around Christmas. Flights fill up very quickly because they are relatively limited compared to many other world destinations.