https://www.flylax.com/inter-terminal-connections

https://www.flylax.com/lax%20new-terminal-maps##






in thr map you can walk within security around the airport

southwest is terminal 1

going out should be fine. I’d say the walk is about 20 minutes. Of course WN gets delays

the return I’d be concerned. I have no idea how efficient having global entry would be in international clearance If you have only 2.5 hrs and the walk takes 20 minutes you could be cutting it close.