I have a flight very early in the morning from Keflavik and I'm considering spending the day before at the Blue Lagoon, which is very close to the airport, until closing time, which is around 11 p.m., and then take the bus (or other means) to the airport.
I asked at the tourist information center in Reykjavik and I was told that the last bus from the Blue Lagoon to Keflavik is at 10 p.m. but judging from the official Blue Lagoon site the last bus is at 2:30 p.m.!
Are there buses operated from other companies with different scheduele? If not, how can I reach the airport otherwise?