Visit Skyscanner to find the best flight deals https://www.skyscanner.net/

TUI - flights from several UK airports https://www.tui.co.uk/flight/routes

Useful information and things to do:

https://lanzaroteinformation.co.uk/

https://www.lanzaroteguidebook.com/destination/playa-blanca

https://theculturetrip.com/europe/spain/articles/the-top-10-things-to-do-and-see-in-playa-blanca-lanzarote/

https://www.islandquestlanzarote.com/?gclid=EAIaIQobChMI9a2Qif6T5AIVQbTtCh3kuAvhEAAYASAAEgIjYvD_BwE

https://lanzaroteinformation.co.uk/a-quick-guide-to-the-non-resort-places-in-lanzarote/