diff --git a/homeassistant/components/opensky/const.py b/homeassistant/components/opensky/const.py
new file mode 100644
index 00000000000..7e511ed7d2c
--- /dev/null
+++ b/homeassistant/components/opensky/const.py
@@ -0,0 +1,15 @@
+"""OpenSky constants."""
+DEFAULT_NAME = "OpenSky"
+DOMAIN = "opensky"
+
+CONF_ALTITUDE = "altitude"
+ATTR_ICAO24 = "icao24"
+ATTR_CALLSIGN = "callsign"
+ATTR_ALTITUDE = "altitude"
+ATTR_ON_GROUND = "on_ground"
+ATTR_SENSOR = "sensor"
+ATTR_STATES = "states"
+DEFAULT_ALTITUDE = 0
+
+EVENT_OPENSKY_ENTRY = f"{DOMAIN}_entry"
+EVENT_OPENSKY_EXIT = f"{DOMAIN}_exit"
diff --git a/homeassistant/components/opensky/sensor.py b/homeassistant/components/opensky/sensor.py
index cdedd0c9620..0616b774951 100644
--- a/homeassistant/components/opensky/sensor.py
+++ b/homeassistant/components/opensky/sensor.py
@@ -21,42 +21,21 @@ import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
-CONF_ALTITUDE = "altitude"
+from .const import (
+    ATTR_ALTITUDE,
+    ATTR_CALLSIGN,
+    ATTR_ICAO24,
+    ATTR_SENSOR,
+    CONF_ALTITUDE,
+    DEFAULT_ALTITUDE,
+    DOMAIN,
+    EVENT_OPENSKY_ENTRY,
+    EVENT_OPENSKY_EXIT,
+)
 
-ATTR_ICAO24 = "icao24"
-ATTR_CALLSIGN = "callsign"
-ATTR_ALTITUDE = "altitude"
-ATTR_ON_GROUND = "on_ground"
-ATTR_SENSOR = "sensor"
-ATTR_STATES = "states"
-
-DOMAIN = "opensky"
-
-DEFAULT_ALTITUDE = 0
-
-EVENT_OPENSKY_ENTRY = f"{DOMAIN}_entry"
-EVENT_OPENSKY_EXIT = f"{DOMAIN}_exit"
 # OpenSky free user has 400 credits, with 4 credits per API call. 100/24 = ~4 requests per hour
 SCAN_INTERVAL = timedelta(minutes=15)
 
-OPENSKY_API_URL = "https://opensky-network.org/api/states/all"
-OPENSKY_API_FIELDS = [
-    ATTR_ICAO24,
-    ATTR_CALLSIGN,
-    "origin_country",
-    "time_position",
-    "time_velocity",
-    ATTR_LONGITUDE,
-    ATTR_LATITUDE,
-    ATTR_ALTITUDE,
-    ATTR_ON_GROUND,
-    "velocity",
-    "heading",
-    "vertical_rate",
-    "sensors",
-]
-
-
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
     {
         vol.Required(CONF_RADIUS): vol.Coerce(float),