At the moment, there are zero airlines flying to Dakar. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Dakar.
If you want to broaden your search, look at flights departing from other airports.
Take a look at flight times to see which one works best for you.
If you want to travel in July, it's best to book your flights early, as this is peak season in Dakar. The cheapest month to fly is normally November – try searching three to four months prior to then to get a bargain. You can also search by month, which will reveal the cheapest time of the week to fly.