Lufthansa is running a sale from the UK at the moment with some decent options, especially in Premium Economy.
You must book by Sunday night. The travel dates vary but seem very widely available based on a few I checked. You are looking at, in Premium Economy:
- Nairobi £553
- Buenos Aires £676
- Dubai £448
- Singapore £667
In Business Class, deals include:
- Hong Kong £1,820
- Delhi £1,564
- Buenos Aires £1,981
- Rio £1,409
- Johannesburg £1,748
- Tel Aviv £590
All flights are via Frankfurt or Munich.
Your best option to maximise your miles when paying is American Express Preferred Rewards Gold. This offers double points – 2 per £1 – when you when you book flight tickets directly with an airline. Our review of Amex Gold is here.
Details are on the Lufthansa website here.