What is another word for flash from the past?
Pronunciation: [flˈaʃ fɹʌmðə pˈast] (IPA) 
A "flash from the past" is a term used to describe a sudden and poignant memory from an earlier time. Synonyms for this phrase might include "nostalgic recollection," "retrospective moment," or "sentimental flashback." Other similar phrases that could be used interchangeably might include "memory lane moment," "throwback occurrence," or "reminiscent reflection." No matter how it is described, the experience of a "flash from the past" can often be a meaningful and emotional moment, allowing one to connect with a simpler time and reminisce about cherished memories.
