How we source, verify and refuse figures
Every threshold on this site traces to a named regulation or a federal dataset. Every figure carries the date a human last read the source. Where we cannot know something, we leave it blank and tell you why rather than estimating it.
This page exists so you can check us. If you are a reporter or a researcher and something here does not add up, the corrections address is at the bottom and we would rather hear it from you than not.
Where a figure is allowed to come from
Every number on the site is tagged with one of eight kinds of authority. The tag is not decoration: a figure that cannot be given one does not ship.
- Regulation
- quoted from the regulation that sets it
- Carrier contract
- the carrier's own filed Contract of Carriage
- Carrier plan
- the customer service plan the carrier is required to publish
- Carrier published
- a policy page the carrier publishes itself
- Airport operator
- published by the airport itself
- Federal dataset
- a federal statistical release
- Platform published
- the platform's own help or pricing page
- Our allowance
- our own estimate — nobody publishes this figure, and we say so
The last one matters most. Where we have had to supply a figure ourselves — a walking allowance inside a terminal, for instance — it is labelled as ours and kept separate from the airport’s own published time. Our estimate is never folded into somebody else’s number to make it look sourced.
Two different claims, never mixed
“Verified” is doing two unrelated jobs on most websites, so we split it.
Read on a date
A person opened the source and read the figure. That date is shown. It does not mean anyone has looked since.
Checked against the live text
A scheduled job re-reads the regulation and fails if the figure is no longer there. Only the statutory dollar amounts get this.
Carrier policy pages get the first and not the second, because several carriers refuse automated requests outright. Claiming an automated check we cannot perform would be the more comfortable option and the false one.
A hand-read figure gets a warning after 90 days and stops the build at 365 days. A figure nobody has re-read in a year is not a verified figure, so the site refuses to compile rather than keep showing it.
The federal delay data
Delay and cancellation figures come from the US Bureau of Transportation Statistics, which carriers file under 14 CFR part 234. The window currently published here is May 2026. BTS releases about two months in arrears, which is why the most recent weeks are never shown.
- Nothing is published off fewer than 300 flights. Below that the figure is withheld, not rounded to zero.
- Scope is domestic US scheduled service. Mexican and other international carriers do not file here, so they are absent rather than shown as perfect.
- Delay causes are reported as the carriers file them, and we separate the share the airline caused itself from weather and air-traffic control.
- Each month is stored as its own file, so when BTS revises history the change is visible in our own record rather than silently overwriting it.
Why some airports show transfer times and most do not
Transfer minutes appear for 4 airports, because those operators publish the minutes themselves and we can point at the page. Another 37 airports have coverage with no transfer figures at all.
For those, the connection calculator starts empty and asks you how long the transfer takes. Your answer is used for the arithmetic and recorded as yours. The alternative — quietly pre-filling a plausible number — would turn our guess into something that looks like a published fact the moment somebody screenshots it.
What we refuse to calculate
This is the part of a methodology worth reading. Anyone can list their sources; the useful question is what happens when the sources run out.
A dollar amount for denied boarding when we do not know the fare
The rule pays a percentage of what you paid, capped. We show the percentage and the cap, because a percentage of an unknown fare is not a number.
A dollar amount for a delayed-bag fee refund
The rule returns the fee you actually paid, which we have no way of knowing. Naming a figure would be inventing your receipt.
Terminal walk times or minimum connection times at most airports
We publish transfer minutes for 4 airports where the airport operator publishes them itself. For the other 37, you supply the time and we do the arithmetic — your figure is never attributed to a source.
Delay statistics for a route with too few flights
Below 300 flights in the window, the figure is withheld rather than shown as zero. A percentage off a handful of flights describes noise.
The odds that you will miss your connection
We hold no outcome data, so any probability would be a guess wearing a decimal point. We tell you the arithmetic and where it is tight.
One airline's contract text
We hold no copy of United's Contract of Carriage that we can quote accurately, so we quote none of it and say so on the page rather than paraphrasing.
Mexican delay data from US federal sources
The federal dataset covers domestic US scheduled service only. Cross-border operational data would need Mexican sources, which we do not yet hold.
What happens when the law changes
The statutory dollar amounts move with inflation, and a site quoting last year’s cap is worse than one quoting none. A job runs daily against the live text of the regulations and fails if a figure we publish is no longer there. It currently watches the denied-boarding caps of $1,075 and $2,150, and the baggage liability floor of $4,700.
Carrier documents cannot be watched that way, so they get calendar review instead: contract extracts every 90 days, service-plan commitments every six months. Mexican amounts are pegged to the UMA, which is reset each February.
Where a figure we published turns out to have been wrong, the correction is shown on the page it affected rather than quietly edited out.
A worked example
The delayed-bag fee refund is a good illustration, because almost every summary of it online is wrong in the same way.
- The clock is 12 hours on a domestic itinerary, 15 hours on a shorter international one and 30 hours on a longer one. It is the itinerary that decides, not the leg the bag went missing on (14 CFR § 260.2).
- It starts when you got the chance to step off the aircraft at your final destination — not the scheduled arrival — and stops when the bag reaches you or an address you agreed to (14 CFR § 260.5(a)).
- Nothing is owed automatically until a mishandled baggage report is filed (14 CFR § 260.5(b)). Most write-ups omit this, and it is the step that actually decides the outcome.
- The refund is the fee you paid. We do not state an amount, because we do not have your receipt.
All four of those are enforced by tests, so the page and the calculator cannot drift apart from each other or from this description. The clock itself is here.
Who we are, and how we are paid
We are an independent travel assistance service. We are not an airline, not an online travel agency, and not a claims company: we take no percentage of anything you recover, and every tool here is free and needs no account.
Where our agents help with rebooking, that is a paid service and it is a separate decision from reading your rights. The rights content does not change based on whether you call.
Corrections and data requests
If a figure here is out of date or wrong, tell us and we will correct it and say that we did. Reporters and researchers wanting the underlying figures behind any table on the site can ask for them; we would rather be quoted accurately from the source data than paraphrased.
The contact details are in the footer of every page. More about who we are, or see the accountability index for the delay figures described above.