U.S. Department Of Transportation Finally Says Goodbye To Beloved Airline Years After Its Final San Francisco Flight

Currently, American Airlines, Delta Air Lines, United Airlines, and Southwest Airlines are regarded as the Big Four. However, we are starting to see some bold moves from other airlines. Take WestJet, for example. The commercial carrier made an "unidentified order" alongside Boeing . It turned out to be the most significant order in Canada, boosting WestJet's network, while putting its plane among the elite for the average age at just 10 years old.

Although we are starting to see a shift among other airlines, several North American companies have ended operations in recent years. As it turns out, the Department of Transportation took years to finalize its departures.

Here's a closer look at which airlines the Department of Transportation finally ceased operations with. One airline in pa