For decades, Icelandair's growth was powered by the Boeing 757-200. But as demand grew on routes like Seattle and New York, they needed more capacity. Rather than moving to a completely new aircraft type, they added the Boeing 767-300ER. The move was brilliant because of one technical detail: the Boeing 757 and Boeing 767 share a common pilot type rating.

One Crew, Two Aircraft

In most airlines, a pilot is certified to fly only one specific aircraft family. If a flight is swapped from a Boeing 737 to a Boeing 787 Dreamliner, the airline must find an entirely different crew. But at Icelandair, a pilot can fly a narrowbody Boeing 757 in the morning and a widebody Boeing 767 in the evening with no additional training. The flight decks are nearly identical, and the handling characteristics are intentionally designed to be similar.

Maximum Hub Flexibility

This commonality gave Icelandair a "superpower" at its Keflavik (KEF) hub. If a 180-seat Boeing 757 flight to New York was oversold, the airline could simply swap in a 260-seat Boeing 767 at the last minute using the exact same pilots. This allowed them to capture extra revenue without the logistical nightmare of crew rescheduling.

While the Boeing 767 offered more seats, the Boeing 757 provided the performance to reach thinner or more distance-constrained airports. Today, Icelandair is transitioning toward an Airbus fleet with the Airbus A321LR, but the Boeing 757/767 commonality remains a legendary example of how technical standardization can drive airline profitability.