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Answers to the most common questions about airport codes, operators, live flight tracking, and how this site organizes the data.
The IATA code is the three-letter code used on tickets and baggage tags (LAX, LHR, JFK). The ICAO code is a four-letter code used by air traffic control and flight planning (KLAX, EGLL, KJFK). IATA codes are assigned by the International Air Transport Association and are consumer-facing; ICAO codes come from the International Civil Aviation Organization and follow a regional-prefix system. Every scheduled airport has both; airports without commercial traffic sometimes have only an ICAO code.
Open that airport's page — for example /airports/lax — and you'll see every carrier with scheduled departures, ranked by flight count, plus the routes they operate. The list updates as schedules change. For real-time operators taking off right now, FlightRadar24's airport view is the best complement.
When a city has more than one airport, each gets its own IATA code (JFK vs LGA vs EWR for New York), and the metropolitan area gets a separate aggregate code (NYC) used by booking systems to search all three at once. The aggregate code never appears on a boarding pass. Similar patterns exist for London (LON: LHR/LGW/STN/LCY/LTN/SEN), Tokyo (TYO: HND/NRT), and Paris (PAR: CDG/ORY/BVA).
We follow OurAirports' size classification: large_airport is typically a major scheduled-service airport with international traffic, medium_airport covers regional hubs with regular commercial flights, and small_airport covers general aviation or limited scheduled service. The tiering isn't based purely on passenger count — some mid-sized airports with strong international connections qualify as large.
Yes, each airport page links out to FlightRadar24's live view, which shows every aircraft currently on approach, at the gate, or taxiing. For scheduled flights (not just live traffic), the airline's own website typically has the richest flight-status data.
The airport index and sitemap currently surface the largest commercial airports worldwide. Smaller or less-trafficked airports still have pages accessible by direct URL (/airports/xxx) but aren't prioritized for search engine indexing until they have enough unique content to be useful on their own.
Airline operator lists on each airport page refresh when new departure data is ingested — typically within a few days of schedule changes. For long-term route additions or closures announced by airlines, the data reflects the current published schedule rather than real-time operations.
By passenger volume, Hartsfield-Jackson Atlanta International (ATL) has traditionally been the busiest, trading the top spot with Beijing Capital (PEK), Dubai International (DXB), and Tokyo Haneda (HND) depending on year and methodology. By land area, King Fahd International (DMM) in Saudi Arabia is the largest; by terminal size, Dubai Terminal 3 is the single largest airport terminal in the world.
Try AirportQ for the route-map game, or AirlineQ if you want the classic airline-clue airport puzzle. Both are good ways to learn airport networks.