This iconic, and expensive, spa offers guests a silica mud mask, fruit juice or alcoholic beverage of choice, along with wet and dry saunas, and of course, the many amazingly milky, blue outdoor thermal pools set beside steaming volcanic backdrops. You can even get a floating massage in a semi private thermal pool there. It is breathtaking! They have a new hotel and a world class restaurant on premises.
The famous Blue Lagoon is located about 20 minutes from the Keflavik airport, 35 from Reykavik. Two buses have pickups starting early morning through the evening. For more information on Blue lagoon tours Click here for bus times
If you go to Iceland, The Blue Lagoon is a must visit. Depending on your enjoyment of spas you may want to slot between 3 to 5 hours to take in its fully beauty as it is a life experience in and of itself. I recommend booking early for early bird pricing. Also, I think it makes sense going directly from the airport, if possible. This way you save time backtracking to the area on a tour of the island, get refreshed from your long flight, and can get to your hotel around a 2 or 3 o’clock check-in if arriving on your first day.