Yes, flight search engines help visualize price increases during events, but believing they "concretize" the local impact is to ignore who really bears the cost.
These platforms only show a transactional part of the trip, not the effect on small merchants or families facing rising food prices.
A big festival here in Senegal, for example, can make transportation unaffordable for residents or even displace street vendors from their usual spots.
The real question is always: who pays the real price of this tourist influx and how is this distribution of costs managed?