Back when I lived in Seattle I’d connect at LAX quite a bit, usually from Alaska Airlines onto American Airlines (and then the other way around on my return).
While their partnership is pretty good overall, the transfer process at LAX is a bit of a pain. American flies out of Terminal 4 while Alaska flies out of Terminal 6. There are two ways to get between the terminals:
- Take the airside shuttle between terminals, though the shuttle service is pretty unreliable at times, and the contract workers that operate it are the rudest and most incompetent people that work at LAX
- Exit the terminal, walk along the outside roadway, and then go through security again at the other terminal (which isn’t necessarily that much longer if you have TSA Pre-Check, and you do get more fresh air)
Anyway, it looks like there’s now a third option. There’s a quasi secret underground tunnel between Terminal 5 (Delta) and Terminal 6 (Alaska) that has been open for a long time. However, according to this FlyerTalk thread, a tunnel has now been opened between Terminal 4 (American) and Terminal 5 (Delta).
So this means it’s now possible to walk between Terminals 4 and Terminal 6 at LAX without leaving security, by taking the two connector tunnels. There’s no boarding pass check, so you can freely walk between those terminals using the tunnels.
Is the total travel time quicker than taking the connector bus? Not necessarily, but at least there’s not as much variability, and you don’t have to deal with the rude contract workers. Besides, between flights I like getting a bit of movement, so I appreciate the opportunity to walk.
Be warned that these hallways connecting terminals at LAX are the creepiest hallways ever. They’re straight out of a hospital thriller movie.
Now don’t even get me started on the bus that operates between American’s Terminal 4 and the remote American Eagle terminal… that’s a real disaster.