I know it and love it from France but it’s not well known in the UK.

It’s very common in Greece, in our top ten herbal/medicinal teas.

I've seen it in France and in Polish shops

Though the box in the Polski sklep could have been Hungarian. I can't remember which was the main language on the pack

not extremely common, but definitely a thing in Belgium.

also an important honey plant

We have Linden trees here, confusingly called lime trees. Never heard of Linden tea..
Must check the Polish supermarket. They have more kinds of herb teas than the health food shops.
A wonderful thing in Limerick, both small Polish shops & one big Polonez supermarket with bread, cheese, meats, cakes, teas, pickles etc I've only seen in mainland Europe and M.E. supermarkets (Germany, Slovak etc, not been in Hungary or Poland).

It's a thing here in CH. But I don't really like it too much 😬

Born and raised in the USA. Into herbal medicine. Never heard of linden flower infusion until recently.

I don't see it commercially here in the U.S., but I live across the street from linden trees and see people on bikes come by to collect the flowers.

it’s very much a thing in Kazakhstan

Never heard of it as a tea. What is it like?

not available commercially in the US in usual food venues - you can get bulk dried flowers at well equipped herb shops

We 100% use it here in Germany. Drink it, wrap up warm with the window open and sweat it out.

Here in the US, it's more often called tilia and is popular in the Latino community. I find the tea bags in Hispanic markets and occasionally in the international aisle of regular grocery stores.