At 41000 ft cabin altitude is 6100 ft for some aircraft, particularly the Boeing 787 Dreamliner, a cruising altitude of 41,000 ft can result in a cabin altitude of 6,100 ft, as this airline's newer aircraft are designed to maintain a lower cabin pressure for increased passenger comfort and well-being. Modern commercial aircraft typically maintain their cabin altitude between 6,000 and 8,000 ft above sea level, providing enough oxygen to breathe easily without requiring supplemental oxygen. | Avi