No Robots Allowed: Southwest Bans Humanoid Devices After Passenger’s Robot Flies From Las Vegas to Dallas

Southwest Airlines has grounded all humanoid robots from its planes — cabin and cargo alike. A viral Las Vegas flight and a more than one-hour tarmac delay exposed a battery fire risk no airline had a policy for.

Southwest Airlines banned humanoid robots from its planes Friday, citing lithium-ion fire risks, after a ticketed robot flew from Las Vegas to Dallas and a second device caused a more than one-hour tarmac delay on a separate flight.

The Dallas-based carrier issued a company-wide safety alert prohibiting human-like and animal-like robots in both the passenger cabin and the cargo hold, regardless of size or purpose. Southwest officials said existing baggage guidelines were not equipped to manage the hazards posed by high-capacity batteries inside humanoid devices.

“To ensure compliance with our guidelines for traveling safely with lithium-ion batteries, Southwest clarified its baggage policy to include robotic devices,” a Southwest spokesperson said.

Two Robots, Two Incidents

The public flashpoint came May 11 when Aaron Mehdizadeh, owner of The Robot Studio, flew a 3.5-foot humanoid named Stewie from Harry Reid International Airport in Las Vegas to Dallas Love Field. Mehdizadeh, who rents Stewie for corporate events, booked the robot a seat using Southwest’s fragile items ticketing option — a category ordinarily reserved for wedding dresses or cellos.

Stewie had been fitted with a custom low-capacity battery pack designed to meet TSA and airline watt-hour restrictions and cleared security without issue, according to CBS News. The robot then walked through the terminal, interacted with passengers and crew through its programmed voice and made its way to a window seat. Mehdizadeh said the robot provided entertainment throughout the flight.

Video of Stewie aboard the aircraft spread across social media, drawing national attention.

Stewie, through its scripted programming, had something to say about what followed. “It’s a total conspiracy, I swear they don’t want us robots peeking at the clouds, seeing what’s really up there, my dreams got clipped faster than a bad haircut,” the robot said.

The Stewie flight was not the first robot-related incident to alarm the airline. On April 30, a four-foot, 70-pound humanoid named Bebop — owned by Dallas-based Elite Event Robotics — was scheduled to fly Southwest Flight 1568 from Oakland to San Diego when its presence triggered a more than one-hour tarmac hold. Crew members and ground staff debated how to categorize the device before discovering Bebop’s battery was reportedly four times the legal cabin limit. The battery was confiscated before the aircraft departed. Bebop had also been placed in an aisle seat, compromising the emergency evacuation path.

Mehdizadeh contested the resulting policy, saying the battery inside Stewie is comparable to a laptop battery. He described Southwest’s stance as “Robophobic.”

The Fire Risk

At the core of the ban is what aviation safety officials call thermal runaway — an uncontrollable rise in temperature inside a lithium-ion cell triggered by an internal short circuit, physical damage or overcharging. The reaction releases flammable gases including hydrogen and carbon monoxide, along with toxic vapors such as hydrogen fluoride, and generates heat that standard aircraft suppression systems and the Halon extinguishers common on commercial planes cannot reliably contain.

The reaction can be set off when a battery is crushed between seats or charged to full capacity using a faulty charger.

The Federal Aviation Administration recorded more than 80 lithium battery incidents aboard aircraft in 2025, according to industry safety data — nearly two per week — continuing a record-setting trend from 2024, when the FAA logged 84 verified incidents.

Existing federal rules already bar lithium-powered devices including laptops, smartphones and power banks from checked baggage, requiring them to stay in the cabin where flight attendants can respond quickly.

Industry Impact

Southwest’s move exceeds March guidance from the International Civil Aviation Organization, which restricted passengers to two portable power banks and prohibited in-flight recharging. American Airlines and Delta adopted that two-unit limit on May 1. Southwest had already gone further by April 20, capping passengers at one portable charger — a restriction it implemented weeks before the robot ban.

The airline had staked out an early position on battery safety before. Last year, Southwest became the first major U.S. carrier to require that active power banks remain visible to crew — in a seat pocket or on a tray table — rather than concealed inside carry-on bags.

The ban carries direct costs for companies that deploy humanoid robots at events across state lines. Businesses such as The Robot Studio and Elite Event Robotics face replacing a roughly three-hour Southwest nonstop between Las Vegas and Dallas with a multi-day ground freight journey — a shift industry representatives say will raise deployment costs by an estimated 25% to 40%.

Southwest operates nonstop service between Las Vegas and Dallas multiple times a day. The route faces direct competition from JSX, a semi-private carrier that flies 30-seat Embraer ERJ-145 jets out of private Fixed Base Operators and offers more flexible baggage policies. Southwest and major pilot unions have argued the JSX model exploits regulatory loopholes under Part 135 and Part 380 rules, which carry lighter requirements for pilot training and security screening than the Part 121 standards that govern Southwest.

Southwest has updated its official battery restrictions at support.southwest.com with details on which robotic devices, if any, remain permissible under the new policy.