diff --git a/changelogs/current.yaml b/changelogs/current.yaml
index 9ecf0d6e48ce5..89f121276ce2c 100644
--- a/changelogs/current.yaml
+++ b/changelogs/current.yaml
@@ -11,6 +11,9 @@ bug_fixes:
 
 removed_config_or_runtime:
 # *Normally occurs at the end of the* :ref:`deprecation period <deprecated>`
+- area: router
+  change: |
+    Removed ``envoy.reloadable_features.copy_response_code_to_downstream_stream_info`` runtime flag and legacy code paths.
 
 new_features:
 
diff --git a/source/common/router/router.cc b/source/common/router/router.cc
index 0495fac876c34..259420bc9c3e3 100644
--- a/source/common/router/router.cc
+++ b/source/common/router/router.cc
@@ -1655,10 +1655,7 @@ void Filter::onUpstreamHeaders(uint64_t response_code, Http::ResponseHeaderMapPt
   callbacks_->streamInfo().setResponseCodeDetails(
       StreamInfo::ResponseCodeDetails::get().ViaUpstream);
 
-  if (Runtime::runtimeFeatureEnabled(
-          "envoy.reloadable_features.copy_response_code_to_downstream_stream_info")) {
-    callbacks_->streamInfo().setResponseCode(response_code);
-  }
+  callbacks_->streamInfo().setResponseCode(response_code);
 
   // TODO(zuercher): If access to response_headers_to_add (at any level) is ever needed outside
   // Router::Filter we'll need to find a better location for this work. One possibility is to
diff --git a/source/common/runtime/runtime_features.cc b/source/common/runtime/runtime_features.cc
index fe98a4d29a6d0..66fd5a1880bf3 100644
--- a/source/common/runtime/runtime_features.cc
+++ b/source/common/runtime/runtime_features.cc
@@ -34,7 +34,6 @@ RUNTIME_GUARD(envoy_reloadable_features_avoid_zombie_streams);
 RUNTIME_GUARD(envoy_reloadable_features_check_mep_on_first_eject);
 RUNTIME_GUARD(envoy_reloadable_features_conn_pool_delete_when_idle);
 RUNTIME_GUARD(envoy_reloadable_features_convert_legacy_lb_config);
-RUNTIME_GUARD(envoy_reloadable_features_copy_response_code_to_downstream_stream_info);
 RUNTIME_GUARD(envoy_reloadable_features_defer_processing_backedup_streams);
 RUNTIME_GUARD(envoy_reloadable_features_detect_and_raise_rst_tcp_connection);
 RUNTIME_GUARD(envoy_reloadable_features_dfp_mixed_scheme);