St Louis Lambert (STL): The Complete Layover Guide

STL splits cleanly into two camps: Southwest owns Terminal 2, and almost everyone else flies from Terminal 1. The terminals sit about a mile apart and behave like separate airports.

Terminal 1 is the original 1956 building, the domed hall designed by Minoru Yamasaki that later shaped terminal architecture around the world. It runs two active concourses, A and C, and hosts American, Delta, United and most other carriers serving St. Louis. Terminal 2 is newer, plainer, and entirely Southwest territory: every Southwest departure leaves from Concourse E.

There is no airside connection between the two. None. If your itinerary moves you from a Terminal 1 airline to Southwest or back, you exit security, ride the free shuttle bus, and start screening from scratch on the other side. The shuttle runs 24 hours a day, departing every 8 to 15 minutes from exit 12 at Terminal 1 and exit 10 at Terminal 2, and the ride takes roughly 10 minutes. Add the walk to the curb, the wait, the ride and the new security line, and a terminal change costs 45 to 60 minutes on a normal day. MetroLink also stops at both terminals one station apart, but the shuttle is simpler and free.

Within a single terminal, STL is one of the easier connections in the American Midwest. Concourses are short, signage is clear, and security waits at off peak times often run under 15 minutes. A 60 minute connection on the same airline is rarely a problem here. The same connection across terminals is a gamble we would not take with checked bags.

One quirk worth planning around: wifi is not unlimited. The STL Free WiFi network gives you 60 minutes free per day, after which access is paid, at around 8 dollars per day through the network provider. Download what you need before your first hour runs out, or tether to your phone.

St. Louis is one of the cheaper big city escapes in American aviation: a 2.50 dollar train ride puts the Gateway Arch within reach.

MetroLink's Red Line runs from stations at both Terminal 1 and Terminal 2 to downtown St. Louis in about 30 minutes, with trains roughly every 20 to 30 minutes depending on time of day. The base fare is 2.50 dollars, though the vending machines at the airport sell a 4 dollar two hour pass that covers transfers. Get off around the 8th and Pine or Convention Center stops for downtown, or ride to Laclede's Landing for the closest walk to the Arch grounds.

Our honest math: with the ride, security on return, and a buffer, you need 5 hours or more of layover before leaving the airport makes sense. At 6 hours you can see the Arch, eat real barbecue, and be back at your gate without sweating. A rideshare covers the 13 miles to downtown in about 25 minutes outside rush hour if the train timing does not cooperate. If you are connecting from an international arrival, standard US entry rules apply before you can leave the building; verify before travel.