Originally Posted by sftrvlr

There are some very short routes that are flown by relatively large aircraft:

HKG-CAN (84 miles) on B757s and A320s (China Southern)
BEY-DAM (66 miles) on A320s (Syrian Arab Airlines)
BAH-DMM (54 miles) on A320s (Gulfair)
DAR-ZNZ (46 miles) on B737s (Air Tanzania)

And what I believe is the shortest air route in the world with jet service:
BZV-FIH (17 miles) on B727s (Hewa Bora Airlines)