How do I add AI traffic in MSFS 2024?

To add AI traffic in Microsoft Flight Simulator 2024, either enable the simulator’s built-in Real-Time Online or offline AI traffic, or, on PC, install an MSFS 2024-compatible traffic injector plus its model library. Disable other AI sources before injecting traffic, or you will get duplicate aircraft, blocked gates and unnecessary CPU load.

Which MSFS 2024 traffic option should I choose?

Built-in live traffic is the simplest option, while a PC injector offers more control over aircraft models, liveries, schedules and traffic volume.

AI traffic has two separate components: a flight source, which decides where aircraft fly, and a model library, which supplies their types and liveries. A model-matching library by itself does not generate traffic, while an injector without the required library may show generic, incorrect or invisible aircraft.

A conventional external injector is a PC-only workflow because it runs as a separate Windows application. Consoles can use the built-in traffic system and any in-sim product explicitly marked as compatible with that console, but they cannot run a desktop injector.

How do I enable built-in AI traffic?

Enable one built-in traffic source in MSFS 2024 and give live traffic time to populate after loading the flight.

1. Open the traffic settings: Use the Settings search for traffic, as menu organisation and labels can differ between simulator updates and platforms.
2. Select one source: Choose Real-Time Online or Live Traffic for feed-based flights, or choose offline AI for simulator-generated movements. Do not enable both where separate controls are offered.
3. Check online functionality: Live traffic needs the simulator’s online data services to be enabled and working.
4. Set ground aircraft conservatively: A high Ground Aircraft Density can fill stands with parked aircraft that are unrelated to the live feed.
5. Load at a suitable airport: Test at a busy hub and wait several minutes. Live data can be delayed, and a small regional airport may genuinely have little traffic.

If the skies remain empty, use our built-in live-traffic troubleshooting checklist to separate a data-service problem from incorrect traffic or multiplayer settings.

How do I install an MSFS 2024 traffic injector?

An MSFS 2024 AI traffic injector normally requires an external application, a compatible aircraft model library and the built-in AI sources to be disabled.

1. Verify explicit MSFS 2024 support: Do not assume a tool designed for Microsoft Flight Simulator 2020 works correctly in 2024. It may launch or connect while still having incompatible injection, model-matching or flight-plan functions.
2. Install both required components: Some products separate the injector from the model and livery library; others provide them together. The injector creates flights, while the library supplies visible aircraft.
3. Check the package location: If the model library is supplied as an MSFS package, place it in the active MSFS 2024 Community folder, not the MSFS 2020 folder. The package folder inside Community should contain its manifest.json at the package root rather than beneath an extra nested folder.
4. Turn off competing traffic: Disable built-in live and offline AI traffic. Set Ground Aircraft Density to zero or low while testing, and close every other injector.
5. Connect after loading the flight: Unless the injector’s instructions specify otherwise, load fully at an airport stand and then start or connect the application. Confirm that its status shows a simulator connection, usually through SimConnect.
6. Begin with modest limits: Use a small injection radius and conservative airborne and parked-aircraft caps. Test the result before increasing traffic at a large hub.

The external application itself does not belong in Community; only simulator packages such as models and liveries go there. Installer-managed libraries should remain in the location registered by their installer.

Fixing common AI traffic injector problems

Most injector faults come from competing traffic sources, a missing model package, restrictive filters or an injector that has not been updated for MSFS 2024.

Why do I see duplicate or overlapping aircraft?

Duplicate aircraft mean that two sources are creating traffic, or that injected aircraft are sharing stands with scenery-based static models.

• Built-in Real-Time Online traffic is still enabled alongside the injector.
• Offline AI traffic or a second injector is running.
• An ATC utility is injecting its own traffic as well.
• Ground Aircraft Density is filling parking spaces with additional aircraft.
• The airport scenery contains fixed static aircraft that no traffic setting can remove.
• Multiplayer aircraft are appearing in the same area as injected flights.

Disable every traffic source, set ground aircraft to zero and test at a default airport. If parked aircraft remain with traffic disabled, they are part of the airport scenery rather than the injector.

Why is the injector connected but showing no traffic?

A connected status only confirms communication with the simulator; it does not prove that flight data and aircraft models are available.

• Confirm that the injector profile targets MSFS 2024 rather than MSFS 2020.
• Check that the model library is enabled and installed in the active package location.
• Remove restrictive airport, altitude, distance, time or aircraft-type filters.
• Test at a busy airport, since the selected source may have no flights near a quiet field.
• Check whether security software is blocking the injector’s flight-data connection.
• Allow free parking positions; some injectors will not create ground aircraft when every compatible stand is occupied.
• Restart after a simulator update if the injector or its supporting components have also required an update.

How much AI traffic can MSFS 2024 handle?

The practical limit depends mainly on CPU main-thread capacity, airport complexity and the number of aircraft being simulated on the ground and in the air.

• Reduce the injector’s total aircraft cap and injection radius first.
• Lower parked and ground-aircraft counts before removing en-route traffic.
• Reduce departure and arrival rates if taxi queues are blocking runways.
• Disable multiplayer while diagnosing traffic-related stutters.
• Use simpler models only when detailed AI aircraft are causing memory or graphics-related pauses.

Traffic simulation, pathing and ATC can create a CPU bottleneck even when the graphics card has spare capacity. If Developer Mode reports Limited by MainThread at busy airports, work through our main-thread traffic tuning steps before cutting unrelated graphics settings.

Will an AI traffic injector work with ATC and multiplayer?

ATC compatibility depends on whether the injector supplies usable AI flight plans, not merely visible aircraft models.

Default ATC may recognise some injected flights, while other traffic can remain primarily visual. An external ATC utility may require a particular traffic source or include its own injector, so use only the supported combination. Our guide to ATC add-ons and their supported traffic sources explains the compatibility checks that matter.

Multiplayer is separate from AI injection. Other players generally do not receive your locally injected traffic, and multiplayer aircraft are not controlled like AI flights; disable multiplayer if you want a clean, predictable airline-traffic environment.