Airport weather & runway directory
Live METAR/TAF weather, runway crosswinds, frequencies, navaids, FAA charts, and sunrise/sunset with both FAA night windows for 18,969 US facilities. Search by airport name, city, or ICAO / IATA / FAA code. Free, no signup.
Top US hubs
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US airport codes: ICAO, IATA and FAA identifiers
Most airports answer to more than one code, and which one you need depends on who is asking. The three you will meet are not interchangeable, and the difference is the single most common reason a lookup comes back empty.
| Identifier | Looks like | Who uses it | How many US fields have one |
|---|---|---|---|
| ICAO | Four letters, no digits — KLAX, PANC, PHNL | Flight plans, ATC, weather products, charts | 2,594 |
| IATA | Three letters — LAX, ANC, HNL | Tickets, baggage tags, timetables | Airline served fields; for US fields usually the same letters as the FAA LID |
| FAA LID | Three or four characters, usually with a digit — 6LA2, 0MT1, C83 | Everything else in the US system | 16,375 fields have only this |
The trap is the middle case. For a large US airport the ICAO code is simply the IATA code with a K in front, which makes it feel like a rule — but it is a coincidence of how the two systems were assigned, and it stops working the moment you leave the busiest fields. Alaska takes PA and Hawaii takes PH rather than K. And the great majority of American airfields, 16,375 of 18,969, have no ICAO code at all: they are identified only by an FAA location identifier, which is why a four letter guess at a grass strip finds nothing. Every page here accepts whichever code the field actually has.
What is on each airport page
Every one of the 18,969 facilities has its own page, built from the FAA NASR cycle and refreshed against live weather when you open it:
- Live weather — the current METAR and the terminal forecast where the field issues one, decoded, with the flight category. 2,467 US fields report a METAR and 773 issue a TAF.
- Runways — lengths, surfaces, lighting and headings, with the crosswind component worked out against the wind that is actually blowing.
- Frequencies — tower, ground, ATIS and CTAF, grouped by when you need them. Only 723 US airports have a control tower; everywhere else the CTAF is the frequency to have set before you arrive.
- Charts and NOTAMs — the FAA airport diagram and approach plates where they are published, and the active notices, with runway closures called out.
- Sunrise, sunset and the two FAA night windows — the one for logging night time and the one for night currency, which do not start at the same moment.
Finding a field when you do not know the code
The search at the top of this page matches on name, city, ICAO code and FAA identifier across all 18,969 facilities, so "Capozzoli", "Baton Rouge" and "6LA2" all reach the same page. If you would rather browse, the state pages below list every facility in a state grouped by type, which is the better route when you are looking for somewhere to go rather than somewhere specific. To find a field by what it has rather than by what it is called — a paved runway of a given length, fuel, an instrument approach — use nearest airport with….
Where the data comes from
Airport, runway and frequency data comes from the FAA's National Airspace System Resource file, which is published on a 28 day cycle. Weather is live from the National Weather Service Aviation Weather Center, and charts are the FAA's own digital terminal procedures. None of it is a substitute for an official briefing or a current chart — it is a planning aid, and the date this data was built is at the foot of this page.
FAQ
What is the difference between an ICAO code and an IATA code?
An ICAO code is four letters with no digits (KLAX) and is what flight plans, air traffic control, weather products and charts use. An IATA code is three letters (LAX) and is what tickets and baggage tags use. For large US airports the ICAO code is the IATA code with a K in front, but that is a coincidence rather than a rule: Alaska uses PA and Hawaii PH, and 16,375 of the 18,969 US facilities have no ICAO code at all.
Why does my airport code not work?
Most likely you are using a four letter form for a field that has none. Only the larger airports carry an ICAO identifier; smaller fields are identified by an FAA location identifier, which is usually three or four characters with a digit in it, like 6LA2 or C83. Search by the airport or city name instead and the page will show you every code the field actually holds.
How many airports are in this directory?
18,969 US facilities, which is every public and private landing site in the FAA record: airports, heliports, seaplane bases and balloonports. The list on this page shows the 2,603 that are towered, carry an ICAO code or see airline service; the rest are on their state pages and in the search.
Is the weather on these pages live?
Yes. Each airport page reads the current observation and forecast from the Aviation Weather Center when you open it. 2,467 US fields report a METAR and 773 issue a TAF, so a smaller field will show runway, frequency and chart data without a live report of its own.
How often is the airport data updated?
Runway, frequency and navaid data follows the FAA NASR cycle, which is published every 28 days. Charts follow the FAA terminal procedures cycle on the same rhythm. Weather and NOTAMs are live. The build date for the static data is shown at the foot of this page.
Do I need an account?
No. Every airport page, and every tool on this site, works without signing in and without payment. An account only adds things that have to be stored for you, like your personal minimums and your logbook.
18,969 US facilities · data refreshed Sep 18, 2026 from FAA NASR.