Home World News Airlines are cancelling thousands of flights as Boeing 737 Max delays stretch...NewsWorld NewsAirlines are cancelling thousands of flights as Boeing 737 Max delays stretch on. Now the upcoming holiday travel season is starting to look bleak.July 15, 201958FacebookTwitterPinterestWhatsApp American and United have cancelled Boeing 737 Max flights through November, although recent reports suggest the plane may not return until 2020.Source: Yahoo.com