What a flight number is, why the callsign on a tracking map can look different, and which tool answers which question: live position, flight status or what is flying over you.
By AeroGaze · November 7, 2026 · 5 min read
To track a specific flight, start with its flight number (for example BA117) and the date. Airline apps and airport boards give the official status, and flight-number search on a live tracking map shows where the aircraft is. Live maps use the ICAO callsign (BAW117), which can differ from the ticket. AeroGaze does not search by flight number: it shows the aircraft nearest to you.
"Track a flight" can mean three different things: where is a particular plane right now, is my flight on time, or what is that plane over my house. They need different tools, and mixing them up is why searches often go nowhere. This page explains the codes involved, which tool answers which question, and what AeroGaze does and does not do. AeroGaze is an independent site and does not search by flight number.
Your booking shows a flight number such as BA117 or KL1001. By the usual airline convention that is a two-character airline code (IATA) followed by up to four digits.
A live tracking map is fed by the aircraft's own ADS-B broadcast, which carries a callsign instead. Callsigns normally start with a three-letter airline designator (ICAO), so BA117 usually appears as BAW117. Some airlines use a callsign that does not mirror the flight number at all, and a few rotate them, so a search for the number on your ticket can find nothing even though the aircraft is in the air.
Two more identifiers help. The registration (for example PH-BXA) is painted on the aircraft and is tied to one airframe. The ICAO 24-bit address, shown as six hex digits, is the code the transponder broadcasts. A flight number can be flown by different aircraft on different days, so the registration is the better key if you are following one specific plane.
Is my flight on time, which gate, has it been cancelled: use the airline's app or website, or the airport's arrivals and departures board. They hold the schedule and gate data that radio broadcasts do not.
Where is flight X right now: use a flight-number search on a live tracking map. Flightradar24 and FlightAware are the well-known ones; we are not affiliated with either. Type the flight number or the callsign, and if one does not work try the other.
What is the plane over me right now: that is the question AeroGaze's live tracker answers. It takes your location and shows the nearest aircraft, with the airline, type and route where those are known.
Is the airport itself disrupted: AeroGaze's airport status page shows live weather and flight category for the airports it covers, which is often the first sign that departures will run late.
1. Find the flight number and the date on your booking or boarding pass. The same number can run daily, so the date matters.
2. Check the airline app or the airport board for the official status, gate and times.
3. Open a live tracking map and search the flight number. If nothing comes up, search the three-letter callsign form (BAW117 instead of BA117), or the registration if you know it.
4. If the flight does not show, check the departure time. Tracking maps normally only show an aircraft once it is airborne and broadcasting, and some flights are listed only when they are close to departure.
5. Expect gaps. ADS-B is received by ground stations, so coverage thins out over oceans and remote regions, and some aircraft are not shown on public maps at all.
AeroGaze does not look up a flight by number or callsign. Its tracker works from where you are and shows the aircraft nearest to you. The data comes from a community feed of ADS-B receivers, and the airline and route are matched from separate public databases, so for some flights we show an aircraft without a route. We would rather say that than guess.
Where it helps with the "where is that plane" question: if you are outside and a flight is overhead, the tracker shows its callsign, and you can share a link to that exact aircraft. If you want to know when and where a flight lands, use the airline or a flight-number search first, then use the flight-time page for a rough duration between two cities.
This page explains conventions rather than quoting data: the IATA flight number and ICAO callsign formats, the ADS-B broadcast and its receiver coverage, and how the tracker works on this site. Flightradar24 and FlightAware are third-party services named only as examples; check their own pages for what each covers. Airlines and airports hold the authoritative status for a flight.
Flight number: Airline code + digits, e.g. BA117 (IATA)
Callsign on live maps: Three-letter code + digits, e.g. BAW117 (ICAO)
Registration: Painted on the aircraft, e.g. PH-BXA
Official status and gate: Airline app or airport board
Search by flight number: Flightradar24, FlightAware (third parties)
Nearest aircraft to you: AeroGaze live tracker
Checked: 7 November 2026
Yes, on a live tracking map that supports flight-number search, once the aircraft is airborne and broadcasting. If the number finds nothing, try the callsign form with the three-letter airline code (BAW117 for BA117).
Tickets use the two-character IATA airline code, while air traffic control and ADS-B use a callsign that usually starts with the three-letter ICAO code. Some airlines also use callsigns that do not mirror the flight number, so searching only the ticket number can miss the flight.
No. AeroGaze shows the aircraft nearest to your location, and you can share a link to one. It does not search the whole sky by flight number or callsign.
It may not have taken off yet, may be outside receiver coverage (oceans and remote areas), or may not be shown on public maps. Check the airline app for the official status.
No. Tracking shows where the aircraft is from its own broadcast. Status (scheduled times, gate, delay, cancellation) comes from the airline and the airport, so use those for anything you need to act on.