Three separate incidents caused trouble in the air or at the airports over the weekend.

• A Thomsonfly flight from Cancun, Mexico to Britain was diverted here after a passenger became unruly and allegedly struck flight attendants, authorities said on Sunday. Link.
• Part of a San Francisco International Airport terminal was evacuated for several hours Sunday after a suspicious item was found in a piece of luggage, officials said. Link
• And two planes needed to make emergency landings, a US Airways flight lost and engine and had to land in Philadelphia, and a Delta Song flight had smoke in the cabin and landed in Savannah, Georgia. Link