First departures hit around early-morning KEF arrivals, straight to Blue Lagoon
Reykjavik Excursions Blue Lagoon Bus runs dedicated shuttles between Keflavik International Airport (KEF Terminal 1) and the Blue Lagoon spa, skipping downtown Reykjavik. It’s built around flight banks, with morning and afternoon departures timed to common arrivals. Tickets usually bundle a one-way transfer for roughly the same ballpark as other KEF–Lagoon shuttles, but you still need a separate Blue Lagoon admission booking with a timed entry slot.
You don’t buy from a KEF kiosk; you book online through the Blue Lagoon website or Reykjavik Excursions ahead of time and get a specific bus time in your confirmation email. One Reddit user said, “you can book a shuttle through the blue lagoon website directly” and another: “I used them without any issues,” which lines up with most light-review chatter. Seats are limited per departure, so treat it like a timed connection, not a walk-up city bus.
Pickup is curbside at Keflavik Terminal 1, outside the arrivals hall, with buses signed for the Blue Lagoon, Reykjavik, or both. The ride runs about 20–25 minutes to the spa parking lot, depending on wind and traffic on Route 41. Bags go under the bus like a normal coach, and you bring your hand luggage inside; there’s no separate luggage fee. From the Lagoon, you can route onward to Reykjavik or back to KEF on later scheduled buses if you book those legs in advance.
Regulars on Reddit slot this bus in alongside Destination Blue Lagoon, Airport Direct, and plain taxis as one of several KEF–Lagoon options. One commenter even said “I’d book Destination Blue Lagoon,” which tells you people actively compare these services rather than treating Reykjavik Excursions as the default. If your schedule is tight around a long-haul arrival or a same-day onward flight, factor in that this is still a shared shuttle, not a private car.
The main worry you see online is reliability: one poster said they’d grab a taxi and demand a refund if the shuttle no-shows. That’s an edge case, but it’s enough that some travelers keep the taxi rank outside KEF arrivals as a backup, even if a bus ticket is already paid. Taxis on this route are significantly more expensive, but they cut out waiting for fixed departure times entirely.
Practical tip: lock your spa entry for at least 90–120 minutes after scheduled landing at KEF, then book the matching Reykjavik Excursions Blue Lagoon Bus departure so immigration, bags, and any small delay don’t wreck the plan.