We recommend at least 55 minutes for a comfortable connection at Keflavik Nas. The minimum connection time is 40 minutes for schengen flights and 45 minutes for non-schengen flights. Transit between terminals takes up to 20 minutes.

Schengen-to-Schengen: 40 min. Schengen-to-Non-Schengen: 45 min. Non-Schengen-to-Schengen: 45 min. Non-Schengen-to-Non-Schengen: 45 min. These are the shortest layovers airlines will sell at Keflavik Nas.

Keflavik is a single, compact terminal built almost entirely around Icelandair's transatlantic connecting bank, so most passengers walk short, flat distances between gates rather than crossing separate terminals. The challenge isn't distance but the passport/security zone crossings, since Iceland's Schengen membership means many 'international-international' connections (e.g., US to continental Europe) require re-clearing border control. There is no train or shuttle at KEF — the entire terminal is walkable, with the two concourses connected by a central hall of shops and lounges. Passengers transferring between a non-Schengen flight (e.g., North America) and another non-Schengen flight (e.g., UK) or a Schengen flight must pass through passport control and often a security re-screen, which is where most of the connection time is actually spent, not the walk itself.

Still under the 40-minute domestic-domestic MCT and risky given how variable passport control queues can be. See full 30 min guide →

Matches the official MCT for most itineraries but assumes smooth immigration lines and no gate changes. See full 45 min guide →

An hour covers even a slow immigration queue plus a leisurely walk to the far concourse. See full 1 hr guide →

Plenty of buffer for KEF's compact layout, even during a busy transatlantic arrival bank. See full 1¼ hr guide →

Very comfortable, with time to browse duty-free or grab food between flights. See full 1½ hr guide →

Generous connection time; could allow a relaxed meal or lounge visit. See full 2 hr guide →

More than enough, though it starts to feel like a long layover in a fairly small terminal with limited amenities. See full 2½ hr guide →

Ample time, but KEF's shopping and dining options are limited compared to major international hubs. See full 3 hr guide →

Long layover; consider that KEF has few amenities beyond duty-free shops and cafes to fill the time. See full 4 hr guide →