How to organize the search for air tickets (approaches, technologies)?

Question

Database design

It would be interesting to know what approaches are used to solve the problems of finding air tickets (grabbing is not of interest).
What kind of databases are used, RDMS or specialized ones, are search engines used (ElasticSearch, Sphinx), algorithmic problem-solutions. Thanks in advance for your reply!

Answer 1

business.skyscanner.net/portal/en-GB/Documentation...

Answer 2

And where are you going to look for it?)) In fact, the services from which you can buy them already provide api for searching and filtering.

Answer 3

I liked how to organize a search on this resource https://amid.kz/
Quite quickly and conveniently. Didn't watch others