Starting October 19, 2026, US airlines can no longer count 10 kinds of delays and cancellations as their own fault in the cause reports they file with the Department of Transportation. Unscheduled maintenance that can't be deferred, the removal of an unruly passenger and cybersecurity attacks are on the list. DOT published the final rule in the Federal Register on September 3, 2026.
The change is in how delays are reported, not in your refund rights. A canceled or significantly delayed flight still gets you a refund under DOT's refund rule. What may shrink is the meal vouchers and hotel rooms airlines promise for delays they caused, and DOT says so in the rule itself. Here's what moved, why it matters at the gate, and what still protects you.
What DOT Changed
Since 2002, reporting airlines have filed monthly reports with DOT's Bureau of Transportation Statistics giving the cause of every cancellation and every delay of 15 minutes or more. Each delay goes in one of five categories: Air Carrier, Extreme Weather, National Aviation System, Security or Late Arriving Aircraft, and cancellations use the same list without Late Arriving Aircraft. The Air Carrier category is for circumstances within the airline's control, and DOT's own technical guidance listed maintenance and the removal of an unruly passenger in it.
The FAA Reauthorization Act of 2024, which became law May 16, 2024, told DOT that 10 specific events "shall not be included within the Air Carrier code." This rule carries that out. It creates a new reporting category, called Section 511(b), for those events only, and rewrites the Air Carrier definition so they can't be reported there. The 10 events are:
- Aircraft cleaning necessitated by the death of a passenger.
- Aircraft damage caused by extreme weather, foreign object debris or sabotage.
- A baggage or cargo loading delay caused by an outage of a bag system not controlled by a carrier or its contractor.
- Cybersecurity attacks, "provided that the air carrier is in compliance with applicable cybersecurity regulations."
- An unexpected shutdown or failure of government systems that directly affects an airline's ability to fly safely.
- Overheated brakes due to a safety incident that required emergency procedures.
- Unscheduled maintenance, including for an airworthiness directive, that shows up outside a scheduled maintenance program and "cannot be deferred or must be addressed before flight."
- An emergency that required medical attention through no fault of the carrier.
- The removal of an unruly passenger.
- An airport closure due to volcanic ash, wind or wind shear.
DOT skipped public comment because the law left it no discretion, and the rule uses the statute's own language. For 2026, 13 airlines report under these rules.
Why It Matters at the Gate
The reports feed more than a statistics table. Airlines' customer service plans promise amenities for delays and cancellations they control, and DOT's Airline Cancellation and Delay Dashboard shows those promises airline by airline. On the dashboard as I read it October 12, every airline in the commitments table promises a meal or meal voucher when a cancellation it caused leaves you waiting 3 hours or more for a new flight.
The rule explains the link. The 2024 law requires the dashboard to explain when a delay or cancellation isn't within the airline's control "consistent with [14 CFR] 234.4," the regulation this rule amends. And DOT's own economic analysis spells out the result: "it is expected that the total value of amenities and compensation currently provided by air carriers to consumers will be reduced under this final rule because of the 10 delineated causes of delay and cancellation that will now be excluded from the Air Carrier category." DOT says it can't estimate how much, because it doesn't see how often these 10 causes happen.
So the practical exposure is a mechanical problem that grounds your plane. Before October 19 that sat in the airline's column; under the new definitions, unscheduled maintenance that "cannot be deferred or must be addressed before flight" moves out of it. DOT's Fly Rights guide already warns that some airlines "may not offer amenities if the delay is caused by bad weather or something else beyond the airline's control."
Your Refund Rights Don't Change
This rule amends Part 234, the reporting regulation, while refunds come from a different one, Part 260, whose trigger is what happened to the flight. Part 260 requires a full refund, including taxes and ancillary fees, for any canceled or significantly delayed or changed flight when you decline the alternative. A significant delay is defined by the clock (3 hours domestic, 6 hours international) and by changes to your airports, connections or cabin. Our guide on what to do when your flight is canceled or delayed walks through claiming it.
Where Your Card Fits In
If airline meal and hotel promises cover fewer delays, the trip delay coverage on the card you paid with does more of the work. Chase describes the Chase Sapphire Reserve benefit this way: "If your common carrier travel is delayed more than 6 hours or requires an overnight stay, you are covered for unreimbursed expenses, such as meals and lodging, up to $500 per covered traveler." The Chase Sapphire Preferred has the same $500 per covered traveler after a delay of more than 12 hours or an overnight stay, and our Sapphire Preferred vs. Reserve comparison sets the two cards' protections side by side. Chase's Reserve page says restrictions, limitations and exclusions apply and points cardmembers to their Guide to Benefits for full coverage details, so read yours before you file.
What to Do Now
Book with a card that carries trip delay coverage, and keep every receipt from the moment a delay starts. When an airline says a delay or cancellation wasn't its fault, ask the staff anyway whether it will pay for meals or a phone call, which is what Fly Rights tells delayed travelers to do. If the flight is canceled or significantly delayed and the alternative doesn't work for you, ask for the refund in writing.
What We Don't Know Yet
The rule takes effect October 19, 2026. DOT says it can't estimate how much less airlines will provide, so check your airline's customer service plan and the dashboard after that date. DOT also has more coming: the same law requires a separate category for delays caused by air traffic control instructions, and a petition from Airlines for America, the airline trade group, asks for further changes. DOT says it plans to handle both in a future rulemaking with public comment.
