Swissair Flight 111 is a regular international flight of Swissair by McDonnell Douglas MD-11 aircraft, on the way from John F. International Airport. Kennedy in New York City, USA arrives at Cointrin International Airport in Geneva, Switzerland. This is also a co-shate flight between Swissair and Delta Air Lines.

On Wednesday, September 2, 1998, the HB-IWF aircraft operating this route crashed into the Atlantic Ocean southwest of Halifax International Airport, right at the mouth of St. Margarets, Nova Scotia The location of the fall is 8 km from the coast, away from the fishing village and the Peggys Cove and Bayswater tourist communities. All 229 people on the plane were killed — the highest number of deaths in McDonnell Douglas MD-11-related aviation accidents and the second highest number of deaths in aviation disasters in Canada, only after Flight 1285 of Arrow Air.