Compare the best FSX add-on aircraft for airliners, turboprops, GA and freeware, plus Steam Edition compatibility and buying checks.
The best FSX add-on aircraft are the PMDG 737 NGX for a systems-heavy jet, Majestic Dash 8 Q400 for turboprop operations, A2A’s Accu-Sim Cessna 172 or Comanche for general aviation, and selected freeware for lighter use. Check boxed-FSX and Steam Edition compatibility before buying or installing any legacy package.
Which FSX add-on aircraft is best for each type of flying?
For most pilots, the right choice is determined by aircraft class and the amount of systems depth they want.
| Type of flying | Recommended aircraft | Why choose it | Main caveat |
|---|---|---|---|
| Boeing jet operations | PMDG 737 NGX | Detailed cockpit procedures, FMC operation and realistic airline workflows | The FSX product is the original 737 NGX, not the later NGXu made for Prepar3D |
| Regional turboprop | Majestic Dash 8 Q400 | Strong flight modelling and distinctive propeller, engine and autopilot procedures | It demands more controller setup and study than a default aircraft |
| Piston general aviation | A2A Cessna 172 Trainer or Comanche 250 with Accu-Sim | Detailed engine behaviour, aircraft condition and hands-on piston flying | Confirm that the specific edition supports FSX rather than only Prepar3D |
| Long-haul freeware | iFly Boeing 747-400 | A virtual cockpit with simulated FMC, TCAS and inertial-reference functions | Older gauges and installers may need careful setup on modern Windows installations |
| Casual superjumbo flying | Airbus A380 Mega Pack | Multiple liveries, a 3D cockpit, sounds and checklists in one package | Choose it for variety rather than the systems fidelity of specialist commercial aircraft |
We would pick the PMDG 737 NGX for methodical airline procedures, the Majestic Q400 for challenging regional operations, and an A2A piston aircraft for realistic general aviation. None is automatically best for everyone: a detailed FMC is wasted if what you really want is low-level cargo flying from short strips.
Should I choose payware or freeware for FSX?
Payware is generally the better choice for deep system simulation, while freeware offers greater variety and lower commitment.
- Choose payware when accurate procedures, substantial manuals, custom avionics and failure simulation are priorities. Because FSX is a legacy platform, verify that the product remains available through a legitimate licence and that activation still supports your system.
- Choose freeware when you want unusual aircraft, several liveries or something less demanding than a study-oriented cockpit. Quality varies, so check for a proper virtual cockpit, working gauges and FSX-specific packaging rather than judging by exterior screenshots alone.
Among our downloadable options, the detailed 747-400 package with FMC and TCAS is the strongest fit for long-haul operations. The multi-livery A380 collection with a 3D cockpit suits pilots who value variety, while the STOL-focused utility aircraft with a working cargo ramp is a better choice for short-field and cargo flying.
For more categories, our category-by-category comparison of free FSX aircraft covers airliners, vintage types, business aircraft and utility flying without repeating the commercial recommendations here.
Will these aircraft work in FSX: Steam Edition?
Many FSX add-on aircraft work in Steam Edition, but compatibility depends on the installer, gauge dependencies and the exact edition of the product.
- Check the named simulator. The documentation must explicitly cover FSX or FSX: Steam Edition. A Prepar3D or Microsoft Flight Simulator edition cannot simply be copied into FSX.
- Confirm required FSX components. Some aircraft depend on Acceleration-era features, additional SimConnect components or supporting runtime libraries. Follow the supplied documentation rather than downloading random replacement DLL files.
- Inspect the installation path. Older installers may look only for boxed FSX in the Windows registry. If manual path selection is offered, point it to the folder containing
fsx.exe, not automatically toSimObjects\Airplanes. - Verify activation and operating-system support. Legacy commercial packages can be excellent but impractical if their installer or licensing system no longer functions on the computer being used.
- Allow for FSX’s memory limit. FSX is a 32-bit application. A complex aircraft combined with dense scenery and large textures can exhaust its available address space, producing an out-of-memory crash even on a PC with ample physical RAM.
A mistake we see constantly is buying a later Prepar3D edition because its product name resembles the old FSX release. Treat each simulator edition as a separate product unless its documentation explicitly says otherwise.
What should I check before choosing an FSX aircraft?
The best aircraft package should match your preferred cockpit, navigation equipment, performance budget and tolerance for reading manuals.
- Cockpit format: confirm that it has the virtual cockpit or 2D panel you expect; an attractive external model does not guarantee either.
- Systems depth: decide whether you need a functional FMC, realistic electrical and hydraulic systems, or only basic autopilot and GPS operation.
- Documentation: complex aircraft should include setup instructions, checklists and operating guidance. Without them, distinguishing a fault from an incorrect procedure becomes difficult.
- Controller requirements: turboprops and older aircraft may use propeller, mixture or condition controls differently from default FSX aeroplanes.
- Computer load: detailed virtual cockpits, large textures and custom gauges affect performance more than a simple exterior model.
If an installed aircraft does not appear, the usual causes are an extra nested folder, a missing aircraft.cfg file or a package placed outside SimObjects\Airplanes. Black or inactive gauges usually point to a missing dependency, blocked gauge module or incompatible edition—not poor flight dynamics or an incorrectly selected livery.