Flights that have been disrupted by terror concerns over the New Year's holiday:

Wednesday:

— British Airways 223 from London to Washington was detained for several hours at Dulles International Airport as FBI and Homeland Security officials questioned passengers.

— AeroMexico 490 from Mexico City to Los Angeles was canceled.

Thursday:

— AeroMexico 490 from Mexico City to Los Angeles was canceled.

— British Airways 223 from London to Washington was canceled.

— British Airways 222 from Washington to London was canceled.

— Air France 3112, bound for Paris from New York, made an unscheduled landing in Canada so its luggage could be checked.

— British Airways 216 from Washington to London was delayed and passengers re-screened for security reasons before the flight departed.

Friday: 

— British Airways 223 from London to Washington was canceled.

— British Airways 217 from London to Washington was delayed because passengers had to undergo additional screening.

Saturday: 

— British Airways 263 from London to Riyadh, Saudi Arabia, has been canceled.

Sunday: 

— British Airways 262 from Riyadh to London has been canceled.