What Terminal Is Southwest at LAX? Terminal 1 Gates, Check-In, and the Fastest Way Through

I spent six years working ground ops at LAX, and I still get the same text from friends every few weeks: “Which terminal is Southwest again?” Fair question. LAX has a horseshoe road that turns into a parking lot at the wrong hour and enough construction barriers to make even regulars second-guess themselves.

So here is the short version, then the details that actually save you time.

Quick answer: Southwest flies from LAX Terminal 1

Southwest departs from Terminal 1 at LAX, gates 9–18B, for domestic flights. That is it. Whether you’re headed to Oakland, Denver, or Nashville, you check in, drop bags, and board at Terminal 1.

LAX’s own terminal page confirms it: Southwest checks in at Terminal 1, and the terminal runs gates 9 through 18B. Before you leave the house, it’s worth pulling up live gate and flight status for LAX — gates here move around (more on that below), and the monitor is the only source that’s never out of date. If you want the big picture of how the horseshoe fits together, here’s LAX’s full terminal map and how they connect.

The catch: international Southwest flights don’t leave from Terminal 1

Here’s the part almost nobody tells you, and the reason people end up confused at the wrong gate.

If you’re on a Southwest international flight, you still check in at Terminal 1 — but you don’t depart from there. According to LAX, international Southwest passengers are bused from Terminal 1 over to Terminal B, the Tom Bradley International Terminal (TBIT) West Gates, where the flight actually leaves and arrives.

So: domestic Southwest means start and finish at Terminal 1. International Southwest means check in at Terminal 1, then get shuttled to TBIT. Build in the extra time for that transfer; it is not a 90-second walk. And for what it’s worth, I’ll defend the TBIT more than most people will — it’s a genuinely nice building once you know which exits to use.

Terminal 1 gates and layout

Gates run 9 to 18B. But don’t marry a gate number. During the ongoing construction, LAX permanently renumbered the departure gates and warns of rotating gate closures, so the gate on your boarding pass this morning may not be the gate on the monitor this afternoon. Check the display screens when you get inside. Every time.

The good news is Terminal 1 is not the tired building it used to be. LAX poured close to $980 million into it across two projects. A $507 million modernization finished in 2018 added a consolidated TSA checkpoint at the east end, a new ticketing lobby, and a fully automated checked-baggage system. Then a $477.5 million extension opened in May 2021, adding a 283,000-square-foot building with two new baggage carousels, more ticket counters, and a six-lane TSA checkpoint using Automated Screening Lanes — the kind where several people load bins at once instead of single-file.

Southwest specifically came out ahead in that 2021 expansion. Per Los Angeles World Airports, the airline picked up a third baggage carousel, three more ticket counters, and fourth-floor office space, and its LAX crew base lives in that building. Translation for you: more counters and belts means the check-in crush moves faster than it did a few years ago.

Checking in and getting through security

Southwest recommends arriving at least 2 hours before a domestic flight and at least 3 hours before an international one. At LAX, take that seriously — this is not an airport that rewards optimism.

A few Southwest-specific things worth knowing:

• Online and mobile check-in opens 24 hours before departure — 36 hours if you pay for EarlyBird Check-In. Because Southwest has no assigned seats, your boarding position is set by when you check in. Set an alarm for that 24-hour mark.
• Flying international? You have to verify your passport with an agent or a kiosk at the Southwest ticket counter at least 60 minutes before departure. Don’t cut that one close.

Timing your arrival around LAX’s crowds helps too. The airport flags its heaviest windows as 6:30–9:00 a.m. for domestic flights, plus 11:00 a.m.–2:00 p.m. and 8:00–11:00 p.m. for domestic and international combined. If your flight sits inside one of those blocks, pad your buffer.

Connecting to Terminal 2 (or anywhere else in LAX)

This is my favorite underused fact about Terminal 1. That 2021 extension built a post-security bridge connecting Terminal 1 to Terminal 2 — meaning you can walk between the two without being re-screened. If you’re connecting from a Southwest flight to a carrier in T2, you stay airside. No exit, no second security line.

If you do need to go landside, the walk between Terminal 1 and Terminal 2 is only about 3 to 5 minutes. Anything farther around the horseshoe — say you’re connecting to flying Alaska Airlines out of LAX Terminal 6 — is a longer haul, and you’ll likely leave security and re-enter, so give yourself real time.

Curbside drop-off and picking someone up

Drop-offs happen on the Upper/Departures level. My one insider tip, straight from LAX’s own guidance: drive to the farthest end of the drop-off lane, past the construction barrier. It’s almost always less crowded down there, and you’ll spend less time idling behind the person having a full goodbye ceremony at the curb.

Pickups are different. They happen on the outer curb of the Lower/Arrivals level — not the same lane you dropped from.

And the big one, because it catches everybody: Uber, Lyft, and taxis do not pick up at the curb. You walk or ride to the LAX-it lot next to Terminal 1. From Terminal 1 it’s roughly a 3–8 minute walk, or a free shuttle that comes every 3–5 minutes and takes about 8–15 minutes all in. The one exception is premium rides — Uber Black/Black SUV, Lyft Black/LUX, and limos still meet you at the terminal curb. If you’re deciding how to get out of the airport entirely, I broke down every way to get from LAX into Los Angeles with honest times and costs.

Who else flies out of Terminal 1

If you’re double-checking you’re in the right place, Terminal 1 is also home to Allegiant Air, Cayman Airways, Frontier, JetBlue, Sun Country, and Viva Aerobus. So a Terminal 1 sign with a bunch of budget carriers on it is a good sign you’re where you should be for Southwest.

FAQ

Does Southwest have a lounge at LAX? No. Southwest doesn’t operate lounges anywhere, LAX included. Business Select gets you priority boarding and extra Rapid Rewards points, but no lounge. Third-party lounge options near Terminal 1 are more limited than at some of LAX’s other terminals, so plan to eat or work in the general gate area.

Where’s the pet or service-animal relief area? There’s one beyond security near Gate 13, plus a landside relief area between Terminal 1 and Terminal 2. Handy if you’re traveling with a dog or a working animal and don’t want to re-clear security.

How early should I arrive for a Southwest flight at LAX? At least 2 hours for domestic and 3 hours for international, per Southwest — and lean toward the higher end if you’re flying during one of LAX’s peak windows.

Can I walk from Terminal 1 to Terminal 2? Yes. There’s a post-security bridge between them, so connecting passengers don’t get re-screened. Landside, it’s about a 3–5 minute walk.

That’s the whole map. Terminal 1 for Southwest, gates 9–18B, check the monitors because they move, and remember that “international” is the one word that changes the plan. Safe travels — and give yourself the extra ten minutes. You’ll never regret them at LAX.