Travelling from most locations, it is best to book your flight to Cartagena during the month of April for the best deal, although there are other times of the year which offer great deals as well.
From most locations, the cheapest day to fly to Cartagena is Monday. Most users found that departing on a Thursday was most expensive.
Typically, cheap prices to Cartagena are most often found for morning flights. Cheap prices are less likely for afternoon flights.