Believing that flight search engines reveal the true nature of local events is a market dogma of laziness. These tools are just price calculators that ignore the real human impact of a festival, such as when the local market becomes unaffordable for residents, or traffic makes life impossible.
They only show a price increase for tourists, not the stress of a family that can no longer afford their weekly basket.
A major sporting event in London does not just raise hotel prices; it can also paralyze public transport used by people to work, a detail Skyscanner will never show.
The cliché of the tool that "materializes" the impact is an illusion that prevents us from seeing the real social consequences.