Passengers wait in front of Delta Air Lines counter at Narita international airport in Narita, east of Tokyo, on Tuesday, August 9, 2016. More than 1,000 people spent the night at the Narita airport because of a computer shutdown that halted Delta Air Lines flights worldwide. Shizuo Kambayashi / AP Photo
Passengers line up at the Delta Air Lines for check-in counter at Narita international airport. Shizuo Kambayashi / AP Photo
A passenger plays a game at Narita international airport. Shizuo Kambayashi / AP Photo
A Delta Air Lines employee (right) gives directions to passengers arriving as they wait in the ticketing area after Delta Air Lines’ computer systems crashed on Monday, grounding flights around the globe, at Hartsfield Jackson Atlanta International Airport in Atlanta, Georgia, US. Tami Chappell / Reuters
Travellers check the Delta departures board at LaGuardia Airport, in the Queens borough of New York City. AFP
Travellers wait in line at the Delta check-in counter at LaGuardia Airport. AFP
A Delta employee helps a traveller near the Delta check-in counter at LaGuardia Airport. AFP
Konstance Woods talks on her cell phone with an agent as she stands in line at the Delta ticketing counter at Washington’s Ronald Reagan Washington National Airport. Her family was trying to get to Raleigh, NC after their Delta flight was delayed. Carolyn Kaster / AP Photo
Delta passengers wait in line at a ticket counter at Newark Liberty International Airport in Newark, NJ. Seth Wenig / AP Photo
Luggage sits on the tarmac by gates at Orlando International Airport. Red Huber / Orlando Sentinel via AP
Passengers wait at Hartsfield Jackson Atlanta International Airport. Branden Camp AP Photo
Abby Nass (left) and Cara Martin (right) wait as part of the mission group Adventures In Missions, to find out if their flight to Guatemala on Delta is on time or cancelled at Hartsfield Jackson Atlanta International Airport in Atlanta. Tami Chappell / Reuters
Passengers stand in line after Delta Air Lines flights resumed on Monday in Salt Lake City. Rick Bowmer / AP Photo
Members of the mission group Adventures In Missions wait to find out if their flight to Guatemala is on time or cancelled. Tami Chappell / Reuters
A computer shutdown that halted Delta Air Lines flights worldwide, leaving passengers stranded in airports. Delta operates 5,000 departures a day and is a member of the SkyTeam alliance alongside airlines including Air France-KLM.