diff --git a/homeassistant/components/opensky/icons.json b/homeassistant/components/opensky/icons.json
new file mode 100644
index 000000000000..763e489c4e75
--- /dev/null
+++ b/homeassistant/components/opensky/icons.json
@@ -0,0 +1,9 @@
+{
+  "entity": {
+    "sensor": {
+      "flights": {
+        "default": "mdi:airplane"
+      }
+    }
+  }
+}
diff --git a/homeassistant/components/opensky/sensor.py b/homeassistant/components/opensky/sensor.py
index 9cae03663574..449f17cefbbb 100644
--- a/homeassistant/components/opensky/sensor.py
+++ b/homeassistant/components/opensky/sensor.py
@@ -38,7 +38,7 @@ class OpenSkySensor(CoordinatorEntity[OpenSkyDataUpdateCoordinator], SensorEntit
     )
     _attr_has_entity_name = True
     _attr_name = None
-    _attr_icon = "mdi:airplane"
+    _attr_translation_key = "flights"
     _attr_native_unit_of_measurement = "flights"
     _attr_state_class = SensorStateClass.MEASUREMENT
 
diff --git a/tests/components/opensky/snapshots/test_sensor.ambr b/tests/components/opensky/snapshots/test_sensor.ambr
index a57b438df672..ab39746a93f0 100644
--- a/tests/components/opensky/snapshots/test_sensor.ambr
+++ b/tests/components/opensky/snapshots/test_sensor.ambr
@@ -4,7 +4,6 @@
     'attributes': ReadOnlyDict({
       'attribution': 'Information provided by the OpenSky Network (https://opensky-network.org)',
       'friendly_name': 'OpenSky',
-      'icon': 'mdi:airplane',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
       'unit_of_measurement': 'flights',
     }),
@@ -20,7 +19,6 @@
     'attributes': ReadOnlyDict({
       'attribution': 'Information provided by the OpenSky Network (https://opensky-network.org)',
       'friendly_name': 'OpenSky',
-      'icon': 'mdi:airplane',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
       'unit_of_measurement': 'flights',
     }),