Go through your results for flights to Arica in Chile with Netflights. Although Air France usually has the best prices, it's best to double check what's available for your travel dates.
Flexible on dates? Conducting your search by month allows you to compare prices to Arica throughout the year. Accommodation prices will also be higher at this time of year.
But if you're struggling to find flights to Arica that work for you, try looking at other airports in Chile.
Looking at a few different departure airports will give you even more choice. See what you can find. And remember, it's best to book your flights in advance wherever possible.