Definition
An ATC clearance issued to an IFR flight that authorizes the pilot to fly the route exactly as submitted in the filed flight plan, except for the assigned altitude, which ATC will state separately along with any required departure instructions, transponder code, and frequency. It does not include a Standard Instrument Departure (SID) or Standard Terminal Arrival (STAR) procedure unless the SID or STAR was specifically filed.
Plain English
ATC is telling you: 'Fly the route you wrote on your flight plan.' They will still give you your altitude, departure instructions, squawk code, and the next radio frequency separately, but the route itself is approved as you filed it.
Context Anchor
Heard during IFR clearance delivery, usually before departure when ATC gives the pilot the clearance for the flight.
Derivation
“Cleared” comes from the aviation use of being authorized by air traffic control. “Filed” means placed in the official flight plan record. Together, the phrase points to authorization to use the route already submitted, not a new route made up during the clearance.
Why Pilots Care
Confirms the pilot may proceed without any revisions to the planned route or altitudes.
Intuition Check
Do not read “cleared as filed” as “everything I filed is approved exactly as I wrote it.” In FAA use, it mainly means the route is approved; altitude and departure instructions are separate unless ATC states them.
Example Sentence 1
Cessna 12345 is cleared to Denver as filed, climb and maintain 8,000, squawk 4321, departure frequency 124.5.
Example Sentence 2
The pilot continued taxiing after hearing 'cleared as filed' because no route reprogramming was needed.