.FLT file extension
To open .FLT files on Windows, right-click the .FLT file and select 'Open with'.
.FLT files are document files that require specific applications to open. Use compatible software for your operating system to access them.
Last updated: March 19, 2026 · Reviewed by Julian Stricker
Open on your device
Choose your operating system for a dedicated step-by-step opening guide.
How to open .FLT files
Use these platform-specific instructions to open .FLT files safely.
Windows
- Right-click the .FLT file and select 'Open with'.
- Choose a compatible application like OpenFlight or a GIS software.
Mac
- Control-click the .FLT file and select 'Open With'.
- Choose an application that supports .FLT files, such as a GIS viewer.
Linux
- Right-click the .FLT file and select 'Open with'.
- Use a compatible Linux application like a GIS tool or viewer.
iOS
- Open the .FLT file in the Files app.
- Use 'Share' to send it to a compatible app if needed.
Android
- Locate the .FLT file in your file manager.
- Open it with a compatible Android app that supports .FLT files.
Security notes
- Always verify the source of the .FLT file before opening.
- Keep your software updated to protect against vulnerabilities.
- Avoid running any embedded scripts unless you trust the source.
Recommended antivirus software
Scan files before opening them. These antivirus tools help protect against malware and viruses.
Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.
NortonNorton 360 delivers comprehensive antivirus protection, VPN, and identity theft monitoring. Scan files for threats before opening to keep your device secure.
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Can't open this file?
These are the most common causes and fixes when .FLT files fail to open.
Common reasons
- FLT file does not open
- File opens with incorrect application
Fix steps
- Ensure a compatible application is installed.
- Check that the file is complete and from a trusted source.
- Try opening the file with another application.
OS-specific troubleshooting
Convert .FLT to other formats
Use conversion tools to change .FLT files into formats your software supports.
What is a .FLT file?
.FLT is a document file format used by specialized applications, often in industries like simulation or geographic information systems. These files can contain complex data structures and are not typically meant for general document viewing.
Background
.FLT files are often associated with applications that handle complex data, such as flight simulation or geographic information systems. The format may include 3D models, simulation data, or other specialized content. While not as common as other document formats, it serves crucial roles in industries requiring detailed and precise data representation. Users may encounter .FLT files when dealing with professional software suites or when exchanging data in specific technical fields.
Common MIME types: text/vnd.ficlab.flt
Further reading
Authoritative resources for more details on the .FLT format.
Common .FLT issues
FLT file does not open
The file may not open if the necessary software is not installed or the file is corrupted.
- Ensure a compatible application is installed.
- Check that the file is complete and from a trusted source.
- Try opening the file with another application.
File opens with incorrect application
The operating system may associate the file with the wrong application.
- Right-click the file and select 'Open with'.
- Choose the correct application and set it as default.
FAQ
Can I convert a file to .FLT by renaming it?
No, renaming does not convert the file. Use a conversion tool instead.
Is it safe to open .FLT files?
Yes, if the file is from a trusted source and opened with reputable software.
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