Air Canada has temporarily suspended all service to India due to the closure of Pakistani airspace The company confirmed the suspension in a statement on Wednesday morning. A flight en route to Delhi from Toronto turned back while over the Atlantic Ocean. It is due to return to Toronto this afternoon. Pakistan and India are on high-alert after India launched an attack on Pakistani extremists earlier in the week. Pakistan says it shot down two Indian warplanes after they crossed the boundary between the two nuclear-armed rivals in the disputed territory of Kashmir on Wednesday.