In general, August is the cheapest month to fly from South Africa to Dakar. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around R8 823. If you’re not able to fly to Dakar in August, then March is your next best option. Flight prices from South Africa to Dakar during March average around R9 100.
In general, most travellers find the cheapest time to book a flight to Dakar is about 49 days prior to their departure date, when tickets on average are R9 622.