Washington DC. America's budget airline Spirit Airlines has shut down. The company has stopped all its operations. The company was in serious financial trouble after going into court protection for the second time. Its situation worsened due to rising jet fuel prices caused by the war with Iran.Although efforts were made at the last moment to reach an agreement with the administration of US President Donald Trump for a rescue package, the company was on the verge of closure after a group of creditors rejected the proposal. Spirit has become the first major American airline to completely shut down due...