How we check rates
Every rate on Airport Lot Guide comes from the airport's own published parking page, is restated in our own words, and carries the date we read it. This page says exactly how, so you can judge what to trust.
Where the numbers come from
- On-airport rates: the official parking page of each airport, linked at the bottom of its page under "Sources". We store the values (the hourly step, the daily maximum, the free minutes), not the airport's text or tables, and we write the descriptions ourselves.
- Off-airport prices: the operator's or booking partner's page, checked by hand, with the date shown. They are "from" prices on the day we looked, not quotes.
- Airport list, ranks and passengers: the Federal Aviation Administration's calendar-year 2025 enplanement counts; identifiers and coordinates from the FAA's 28-day NASR data (edition 2026-10-01) and OurAirports.
- Customs waits: U.S. Customs and Border Protection's Airport Wait Times, which we summarise by hour for the 44 airports it reports. We cite CBP as the source and are not affiliated with it.
How often
A job re-reads every official parking page once a week and compares it with the last reading. When the page changes, the rates are extracted again, twice and independently, and the two readings are compared; any disagreement is checked by a person before it is published. Every confirmed change goes on the rate changes page and on the airport's own rate history. A page whose rates have not been re-checked for 45 days says so at the top.
What the calculator does
It applies the airport's published rules to your drop-off and pick-up times: free minutes, the hourly or per-period step, the daily maximum per 24 hours, and a weekly maximum where the airport publishes one. It charges each started period, which is what the gate does. It does not know about taxes added at the gate (we note them beside the rate where the airport states them), online-only discounts, or holiday surcharges. The 1, 3, 7 and 14-day totals are computed by the same code when the page is built.
Our crawler
Our checks identify themselves as AirportLotGuideBot with a link to this page. The crawler reads each site's robots.txt first and obeys it, waits at least three seconds between requests to one host (longer where the site asks), fetches each parking page at most once a week, never fetches booking engines or status APIs, and never reuses any key found in a page. Airports that block automated requests are checked by a person in a browser once a month and marked as such on their page. If you run an airport site and want us to check differently, email hello@airportlotguide.com.
What we don't do
- We don't copy airport text, tables, logos, photos or maps.
- We don't sell parking, and we don't take payment for placement. Off-airport lists are sorted by price, then distance. Where a booking link pays us a commission, it says "affiliate link" beside it (disclosure).
- We don't show live lot status. Where the airport publishes its own display, we link to it.
- We don't estimate security-line waits. There is no public feed, and guesses would be worse than none.
Corrections
Found a rate that is wrong? Tell us the page and what the airport's page says; we check and fix it, and every fix is listed on the corrections log.