What terminal is southwest airlines at jfk which terminal at JFK is used by Southwest Airlines' main operating base is Terminal 4 at John F. Kennedy International Airport. Passengers can choose from an extensive array of attractions and services at one of JFK's major terminals. If you're flying Southwest from JFK, look for specific gates and facilities on the terminal maps and signage. Terminal offers a range of food options, retail boutiques, and lounges to enhance your travel experience. Check your terminal information again closer to the departure date, as terminal allocations are subject to change.