The U.S. government has declined to carry out a congressional mandate to set minimum seat sizes on planes.
The Federal Aviation Administration told Congress this summer that it sees no reason to do so. Worse, no one even seemed to notice.
Airline seats are receding like glaciers in a warming climate, shrinking by roughly 1 inch every decade. That’s made flying more dangerous, according to consumer advocates. A full aircraft is harder to evacuate. And medical experts say prolonged, cramped sitting in such conditions can create blood clots. The World Health Organization put the increase at roughly double after four hours in an airline seat.
What happened to the minimum seat size rule?
The finding came in an overlooked report the agency owed lawmakers under the FAA Reauthorization Act of 2024, which ordered a comprehensive study of aircraft evacuation and required it to look specifically at “seat size and passenger seating space and pitch.” The report, issued late this summer, ends with one sentence that ended eight years of argument: “This study did not identify any issues with current evacuation testing and standards; thus, the FAA is not recommending any changes.”
This isn’t the familiar story of a rule stuck in the pipeline. The pipeline is empty this time. The 2024 law required the administrator to start a rulemaking on the recommendations he “considers appropriate,” with a proposed rule due within 90 days of the report. He recommended nothing, so nothing is due.
And this isn’t a complaint about legroom. The question Congress asked was whether you can evacuate an airplane safely.
A rule Congress ordered twice
Section 577 of the 2018 FAA Reauthorization Act told the agency to issue regulations establishing minimum dimensions for passenger seats. The deadline was October 2019.
The FAA had already answered. In a July 2018 letter to the advocacy group FlyersRights, it said it found “no evidence that there is an immediate safety issue necessitating rulemaking at this time,” and pointed to manufacturer evacuation test videos.
FlyersRights petitioned, then sued. The agency opened a public comment docket in August 2022 and collected more than 26,100 comments. In March 2023, the U.S. Court of Appeals for the D.C. Circuit ruled the agency couldn’t be forced to act, because the 2018 statute requires a seat rule only if one is “necessary for the safety of passengers,” and that call belongs to the agency.
Congress tried again in 2024, folding the evacuation study into Section 365 of the reauthorization. The study had to account for passengers of different ages, passengers with disabilities, nonverbal passengers, non-English speakers, carry-on luggage, passenger load and seat size. Two years later, the answer came back the same.
What the agency’s own reviewers found
Here’s the part the report doesn’t dwell on.
The FAA’s conclusion rests on evacuation trials run by its Civil Aerospace Medical Institute, which tested seat pitches of 28, 32 and 34 inches and widths of 16 and 18 inches, and found that varying them didn’t change how long it took to empty the cabin.
In 2025, the National Academies of Sciences, Engineering, and Medicine peer-reviewed that work. The committee, chaired by former astronaut and engineer Nancy Currie-Gregg, concluded the study “provides some potentially useful data but not the information that would be needed for the FAA to determine” whether seat space rules are warranted, citing “technical issues related to the study’s design, experimental setup, and analytic methods.”
It went further. The institute’s claim that current seating wouldn’t impede evacuation for 99% of the U.S. population “is not supported by the design and results of the research project.” The study “does not directly assess how seat width and pitch interact with passenger body size variables.” The test group “skewed young.”
Reanalyzing the existing data, the committee said, “will be insufficient to establish if constrained seat space is immaterial to evacuation performance.”
The FAA’s July 2026 report describes that same review this way: the Academies “found that the methods and procedures were sound, though they identified issues with the study design.”
Both documents are public. They do not say the same thing.
When I asked the FAA about the report and the discrepancy, the agency sent back a curt reply: “The report is our official comment.”
Oh well.
Is there a case for leaving seats alone?
The industry argument is that a federal minimum removes rows, and rows removed are fares raised. Fewer seats on the same airplane means a higher price on every remaining one, and the people squeezed hardest by a fare increase are the people flying in the back.
In other words, the only thing standing between you and a safer cabin is the cost of the economy seats you already paid for.
What happens now
Nothing, unless Congress writes a different kind of law.
It has now issued the same instruction twice and watched the agency decline twice, the second time through a discretion clause lawmakers put in the bill themselves. A third mandate with the same escape clause produces the same result. A mandate with a number in it, the 32 inches of pitch and 20 inches of width consumer groups have asked for, or whatever the record supports, produces a rule.
The people who have pushed hardest for this are still in office. Rep. Steve Cohen, (D-Tenn.), wrote the 2018 SEAT Act and the EVAC Act. Sen. Tammy Duckworth (D-Ill.), who chairs the Senate aviation safety subcommittee, got the evacuation language into the 2024 bill with Sen. Tammy Baldwin (D-Wis.).
“It should not, and it must not, take another tragedy to bring our aircraft evacuation standards up to date,” Duckworth said when the bill passed.
Cohen has been harder on the testing itself. The FAA’s trials, he said, “were run under idealized conditions: no luggage, no children, no elderly passengers, no pets or service animals, and no panic.”
Consumer groups have been saying a version of this for years. “The FAA has looked the other way for decades as the airlines have increasingly prioritized their bottom lines over passenger safety,” said Sally Greenberg, executive director of the National Consumers League, when six organizations asked the agency for a moratorium on further seat room shrinking in 2022.
Paul Hudson, president of FlyersRights, has argued since 2022 that the agency’s reading of the law is upside down: “The FAA’s argument that its general authority to promote aviation safety overrides the clear and specific Congressional mandate to set seat standards is preposterous.”
Meanwhile, the cabin space keeps doing what it has done since the late 1990s. With every cabin “upgrade” the seats seem to move closer together.
If you said yes:
- Congress has ordered it twice, and 26,100 people filed comments asking for it. What makes you think a third time will work?
- The agency’s own peer reviewers say the research behind the refusal can’t answer the question. What research would?
If you said no:
- Do you agree that a federal minimum takes rows off the airplane, and the fare goes up for everyone left on it?
- Does the government have any role in regulating seat size?
My take
I’m about to fly from Dallas to Auckland in economy class, and I’d benefit from a seat that doesn’t raise my risk of a blood clot. I don’t have a problem with having the option to pay more for extra legroom or comfort, but there should be a minimum seat size.
What stays with me is the shape of the government’s answer. The agency didn’t say seats are big enough. It said its study found no problem. But that doesn’t solve the problem.
Your turn
Have you been unable to fit in an airline seat, or sat next to someone who couldn’t? Have you ever been on an airplane that had to be evacuated? Our comments are open.
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