Excellent question! The color codes on Flightradar24 are a key part of interpreting the map. They primarily indicate the age of the position data (how recently the aircraft’s position was updated) and, in some cases, the type of aircraft or data source.

Here’s a breakdown of the main color codes:

1. Aircraft Trail (Tail) Colors - Most Important

This is the color of the line behind the aircraft icon. It indicates how recent the position data is.

• Dark Orange / Amber: Very recent data. This indicates the aircraft’s position was updated less than 60 seconds ago. This is the most reliable real-time data.
• Light Orange / Yellow: Recent data. The position is between 1 to 2 minutes old.
• Light Blue: Older data. The position is between 2 to 5 minutes old.
• Dark Blue: Historical data. The position is more than 5 minutes old. When you see this, you are often looking at a playback of a past flight, not live data.

Simple Rule: Orange = live/near real-time. Blue = delayed/historical.

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2. Aircraft Icon Colors

The color of the airplane icon itself can indicate the type of aircraft or its data source.

• Yellow Icon: The most common. Represents a standard commercial or general aviation aircraft tracked via ADS-B (the primary source).
• Blue Icon: Indicates an aircraft being tracked via MLAT (Multilateration). This is used for aircraft that do not broadcast GPS position (