TSA's 2026 Airport Security Shake-Up: The New Gateside PreCheck Bypass and What Full Water Bottles Could Mean for You

September 13, 2026

I landed into Denpasar a few years back at close to 1am, off an overnight flight I'd spent mostly awake thanks to a toddler two rows back who did not believe in sleep. Nobody was waiting for me past security — nobody could be, obviously, since anyone without a boarding pass has been stopped at the door since 2001. I found my transfer, found my hostel, collapsed. It was fine. It's always fine. But there's a specific kind of tired that comes from doing every single arrival and departure completely solo, and it's exactly the kind that makes a small, unglamorous TSA policy update actually worth five minutes of your time.

Two genuinely new things happened with US airport security this month. One is live right now at a specific list of airports. The other is still just a maybe. Here's what actually changed, and what didn't.

What "Gateside by TSA PreCheck" actually is

Gateside launched the week of September 9, 2026, and it is not about your own boarding pass. It's for the person who isn't flying — a partner, a parent, a friend — who wants to walk you to your gate before you fly out, or be standing right there when you land instead of hovering in an arrivals hall wondering which door you'll come through.

To be clear, because a few headlines have muddled this: Gateside does not let you skip your own security screening. If you're the one flying, your existing TSA PreCheck membership already gets you the shorter line. Gateside is specifically for someone without a ticket to get past the checkpoint.

Here's how it actually works:

The escort needs TSA PreCheck membership or a Known Traveler Number (KTN) through a trusted-traveler program like Global Entry.
They apply for free through a login.gov account, submitting their KTN, full name, and date of birth (kids can be added too).
Applications need to go in 1 to 3 days before the airport visit — this is not a same-morning, walk-up option.
Once approved, they go through a standard PreCheck lane like anyone else with that status.

Pro tip: if you've got someone flying with you as far as the gate, or meeting you the second you land, get them to apply the moment your flight dates are locked in — not the night before, when nobody reads the fine print properly.

Which airports actually have it right now

As of this run, Gateside is live at 13 airports, with more planned:

Phoenix Mesa Gateway (AZA)
John Glenn Columbus International (CMH)
Dallas Fort Worth International (DFW)
Detroit Metropolitan Wayne County (DTW)
Wichita Dwight D. Eisenhower National (ICT)
Indianapolis International (IND)
Harry Reid International, Las Vegas (LAS)
Los Angeles International (LAX)
Bill and Hillary Clinton National, Little Rock (LIT)
Will Rogers World, Oklahoma City (OKC)
Eppley Airfield, Omaha (OMA)
San Diego International (SAN)
Salt Lake City International (SLC)

Worth noting for anyone reading this from Australia: DFW and LAX are both on the list, and both are common connection points for AU-to-US routes. If you've got a US-based family member who could use PreCheck to meet you the second you clear a long-haul landing, this is genuinely one of those small things that makes a miserable arrival feel a lot less lonely.

Real talk: none of the big East Coast hubs (JFK, Boston, Newark, Atlanta) are on the list yet, and neither is a single non-US airport, obviously — this is a domestic TSA program, so it only helps if your layover or landing happens to be at one of the 13 airports above.

The water bottle question everyone's actually asking about

The other piece of news getting passed around is that TSA is evaluating letting PreCheck passengers carry full-size water bottles through checkpoints equipped with newer CT scanners, instead of dumping them before security like it's still 2007.

This isn't live anywhere yet. It's a proposal under evaluation, not an announced policy with a start date. Here's the actual state of play:

CT scanners — the same technology that already lets some checkpoints leave laptops in bags — have been rolling out gradually since 2019 and now operate in some capacity at several major hubs, including Atlanta, LAX, JFK, Chicago O'Hare, and Dallas-Fort Worth.
Having the scanner installed at an airport does not mean every checkpoint, or every terminal, is using it the same way. Deployment is genuinely inconsistent, even within one airport.
The core 3-1-1 rule — 3.4oz containers, all fitting in one quart-sized clear bag, one bag per passenger — is still the official standard everywhere in the US as of this writing. Nothing about that has formally changed.

Real talk: I've watched someone get forced to chug an entire $6 bottle of water in the security line because they assumed the newer-looking scanner they spotted meant the rules had already changed for them. They hadn't. Don't gamble a good water bottle — or your contact solution — on a guess about which checkpoint you're standing in. Follow 3-1-1 everywhere until a TSA officer at that specific checkpoint tells you otherwise.

What hasn't changed (yet)

Just to say it plainly, since it's easy to read "CT scanners" and "water bottles" in the same headline and assume the rule's gone:

The 3-1-1 liquid rule is still in force nationwide. Pack accordingly.
Gateside doesn't touch your own screening process at all if you're the one flying.
Nothing here is Australia-specific — this is 100% a US domestic TSA program and proposal, so it only matters for trips that route through or land in the US.

Frequently asked questions

Do I need Gateside if I'm the one flying?
No. Gateside is for a non-traveling companion who wants to meet or see off a flying passenger. Your own screening is unaffected either way.

How do I (or someone meeting me) actually apply?
Through a free login.gov application, submitted 1–3 days before the airport visit, using the applicant's TSA PreCheck/Known Traveler Number. Approval needs to be confirmed before showing up.

Is the full water bottle rule live at any airport yet?
No, not officially anywhere. It's still under evaluation. Keep following 3-1-1 everywhere until you're told otherwise at that specific checkpoint.

Will this expand to more airports, or come to Australia?
TSA says more Gateside airports are planned, though no confirmed list or date exists yet. It's a US-only program either way — nothing here applies to Australian domestic security screening.

Bottom line

One of these is real and working right now at 13 specific airports, and it's genuinely worth 5 minutes of setup if you've got someone who could use it to meet you off a long-haul landing. The other is still just TSA thinking out loud. Pack your liquids like it's 2011 regardless, and if you're headed to Europe instead of through the US, the EU's new biometric border system is the bigger thing actually worth planning around this year.