FareBot is a Telegram bot you run on your own server. It checks Google Flights for you and sends you a message when a fare drops under your budget. One /explore can be hundreds of searches, so the bot runs 5 at a time (about 430 a minute) and has a scheduler so a big search doesn't block someone else's quick one. Free and open source, runs with Docker, no API key. Limitations: one-way flights only, and it breaks if Google changes its page format until I update the parser. Open to suggestions   submitted by   /u/m4ssivelol [link]   [comments]