United now requires headphones. The rest should follow.

On February 27, 2026, United Airlines did something that sounds small and is not. It rewrote its contract of carriage to require headphones for any audio or video played on a personal device, and it put the clause in the section that covers refusal of transport. Not the section about comfort. Not a suggestion in the seat pocket. The section that ends with a passenger being removed from the aircraft.

Southwest already required headphones as a matter of policy. Delta asks. United is the first of the large American carriers to write the rule where the consequences live, and the difference matters more than the wording suggests.

For twenty-four years I worked the aisle, and I can tell you exactly what the old approach produced. A flight attendant would notice the sound, walk to the row, and ask. The passenger would turn the volume down. Ten minutes later it would creep back up, because nothing had actually changed except the volume knob, and because the passenger had correctly understood that the request carried no weight. The crew member had asked a favor. Favors can be declined, and quietly, they often were.

What a written rule does is move the conversation off the flight attendant and onto the airline. That is the whole point. It is the difference between a person asking another person to be considerate, which is awkward and easily brushed off, and a person pointing at a policy, which is not personal at all. The crew member stops being the one imposing a preference. They become the one enforcing a term the passenger already agreed to when they bought the ticket.

Anyone who has done the job will recognize why that matters. The hardest part of asking a passenger to change their behavior has never been the asking. It is the exposure. You are one person, standing in a narrow aisle, with an audience of forty people who can hear every word, asking an adult to stop doing something they clearly want to do. If the rule behind you is vague, you are on your own out there. If it is written down, you are not.

The public was ahead of the airlines on this one, and by a wide margin. In YouGov’s May 2024 survey of more than a thousand American adults, 81 percent said that watching a show without headphones was unacceptable. Eighty-one percent. There is almost nothing else in the survey with that kind of agreement. Getting drunk on a flight sits at 82 percent. Taking a neighbor’s armrest sits at 74. Reclining your seat, which people argue about endlessly, splits the country roughly in half. On headphones, the country is not split. It is very nearly unanimous.

That number is what makes the United clause defensible rather than heavy-handed. A rule that four out of five people already believe in is not an imposition. It is the airline catching up to its own customers. The carriers that have not written it down are not protecting a freedom anybody wants. They are protecting the twenty percent, at the expense of everyone else on board and of the crew who have to manage the consequences.

There is a fair objection, and it deserves an answer. Rules that end in removal invite escalation. Give a crew a clause that permits refusal of transport, and somewhere, eventually, a bad night will turn a minor annoyance into a diverted flight, a police meeting, and a video that goes around the world by lunchtime. That is a real risk and it should not be waved away.

But the risk of the alternative is not zero either, and we have been living with it. The FAA logged more than 1,600 unruly-passenger incidents in 2025. That is down sharply from the 5,973 reported in 2021, which was an extraordinary year by any measure, but it is still roughly double the rate we saw before 2020. A great many of those incidents did not begin with the passenger who was eventually removed. They began with a small friction that nobody had the standing to settle: a noise, a seat, a bag, a word. By the time it becomes an incident, the original cause has usually been forgotten by everyone including the people involved.

Written rules are how you settle small frictions early, while they are still small. The clause is not really about the person watching a video out loud. It is about the person two rows back who is getting quietly angrier, and who will eventually say something, and who will say it badly.

What I would want from the other carriers is not just the clause but the manner of it. Write it down, put it where the consequences are so it carries actual weight, and then say it out loud in a way that treats the passenger as a reasonable adult. The pre-departure announcement is the moment. Not a legalistic recitation. One sentence with a reason attached: headphones for anything with sound, because the cabin shares its air and its quiet, and we would like everyone to get where they are going in a decent mood.

A rule without a reason is only a scolding, and people resist scolding on principle. A rule with a reason is something most people will simply follow, because most people, given the reason, would rather not be the one making everyone else uncomfortable.

The industry spends a great deal of money on the passenger experience. Better screens, better seats, better food, better apps. All of it worth doing. But nothing on that list changes a flight as much as the person in the next seat, and until recently the airlines behaved as if the person in the next seat were weather: something that happens to you, that nobody can be expected to do anything about.

United has just said otherwise. The behavior of the person in the next seat is within the airline’s remit, it is written into the contract, and it has consequences. That is a more consequential statement about the future of flying than most of what gets announced with a press release and a video.

The other carriers should follow, and they should not wait to see how this goes. Four out of five of their customers are already there.