diff --git a/python/pyarrow/_flight.pyx b/python/pyarrow/_flight.pyx
index 3b6e9e5f09f7c..8289215de2e29 100644
--- a/python/pyarrow/_flight.pyx
+++ b/python/pyarrow/_flight.pyx
@@ -1249,6 +1249,8 @@ class AsyncioCall:
 cdef class AsyncioFlightClient:
     """
     A FlightClient with an asyncio-based async interface.
+
+    This interface is EXPERIMENTAL.
     """
 
     cdef: