**What Terminal at LGA Is Southwest? Complete Guide** If you are planning to fly with Southwest Airlines from LaGuardia Airport (LGA), one of the first things you may want to know is, what terminal at LGA is Southwest? Southwest Airlines operates from Terminal B at LaGuardia Airport. Knowing the correct terminal before arriving can help you save time and make your airport experience easier, especially if you are traveling with checked baggage or during a busy period. For travelers wondering **[what terminal at LGA is Southwest](https://aerocounter.com/southwest-airlines/lga-terminal-laguardia-airport/)**, Terminal B is the main location to remember. Southwest passengers can use the terminal for check-in, baggage services, security screening, and access to their departure gates. Since airport operations can occasionally change, it is still a good idea to check your Southwest flight information before leaving for the airport. When you arrive at Terminal B, you can complete the Southwest check-in process and drop off any checked luggage. Passengers can also check in online or through the Southwest mobile app before arriving at LaGuardia. Online check-in can make the airport process more convenient because you may be able to proceed directly to baggage drop-off or security, depending on your travel needs.