One of the airline's hubs is John F. Kennedy International Airport, or JFK for short. JFK, which was constructed in the 1940s, serves as Delta Airlines' main transatlantic hub. From the airport, Delta offers a large number of flights that connect travellers to their ideal locations. The second Delta International Terminal at JFK is where the airline operates all of its flights. Moreover, Terminal 4 recently had an expansion that consolidated Delta Airlines operations there. The airline's domestic flights run out of terminal 4.