diff --git a/airflow/providers/amazon/aws/operators/ecs.py b/airflow/providers/amazon/aws/operators/ecs.py
index 5ea364687e1c8..a3c3a13c1a877 100644
--- a/airflow/providers/amazon/aws/operators/ecs.py
+++ b/airflow/providers/amazon/aws/operators/ecs.py
@@ -413,6 +413,7 @@ def _try_reattach_task(self, context):
         )
         if previous_task_arn in running_tasks:
             self.arn = previous_task_arn
+            self.ecs_task_id = self.arn.split("/")[-1]
             self.log.info("Reattaching previously launched task: %s", self.arn)
         else:
             self.log.info("No active previously launched task found to reattach")
diff --git a/tests/providers/amazon/aws/operators/test_ecs.py b/tests/providers/amazon/aws/operators/test_ecs.py
index e5f0bc33d12c4..687c65ab465bd 100644
--- a/tests/providers/amazon/aws/operators/test_ecs.py
+++ b/tests/providers/amazon/aws/operators/test_ecs.py
@@ -207,6 +207,7 @@ def test_execute_without_failures(
         wait_mock.assert_called_once_with()
         check_mock.assert_called_once_with()
         assert self.ecs.arn == 'arn:aws:ecs:us-east-1:012345678910:task/d8c67b3c-ac87-4ffe-a847-4785bc3a8b55'
+        assert self.ecs.ecs_task_id == 'd8c67b3c-ac87-4ffe-a847-4785bc3a8b55'
 
     def test_execute_with_failures(self):
         client_mock = self.aws_hook_mock.return_value.get_conn.return_value
@@ -478,6 +479,7 @@ def test_reattach_successful(
         check_mock.assert_called_once_with()
         xcom_del_mock.assert_called_once()
         assert self.ecs.arn == 'arn:aws:ecs:us-east-1:012345678910:task/d8c67b3c-ac87-4ffe-a847-4785bc3a8b55'
+        assert self.ecs.ecs_task_id == 'd8c67b3c-ac87-4ffe-a847-4785bc3a8b55'
 
     @parameterized.expand(
         [
@@ -526,6 +528,7 @@ def test_reattach_save_task_arn_xcom(
         check_mock.assert_called_once_with()
         xcom_del_mock.assert_called_once()
         assert self.ecs.arn == 'arn:aws:ecs:us-east-1:012345678910:task/d8c67b3c-ac87-4ffe-a847-4785bc3a8b55'
+        assert self.ecs.ecs_task_id == 'd8c67b3c-ac87-4ffe-a847-4785bc3a8b55'
 
     def test_execute_xcom_with_log(self):
         self.ecs.do_xcom_push = True