It’s the shortest regularly scheduled airline route on earth:
Loganair has numerous flights in and out of the Orkneys, but this particular route is the shortest. Schedules and fares are subject to change without notice.
Personal note: I once flew from Tulsa to Oklahoma City, a distance of about 110 miles. Took about sixteen minutes. Then again, this was before all the new methods of inconveniencing air travelers.
(Via Miss Cellania.)