diff --git a/airflow/providers/sftp/hooks/sftp.py b/airflow/providers/sftp/hooks/sftp.py
index b7e667b915f73..f3d3ee01b31f0 100644
--- a/airflow/providers/sftp/hooks/sftp.py
+++ b/airflow/providers/sftp/hooks/sftp.py
@@ -74,19 +74,18 @@ def get_ui_field_behaviour() -> Dict:
     def __init__(
         self,
         ssh_conn_id: Optional[str] = 'sftp_default',
-        ftp_conn_id: Optional[str] = 'sftp_default',
         *args,
         **kwargs,
     ) -> None:
-
+        ftp_conn_id = kwargs.pop('ftp_conn_id', None)
         if ftp_conn_id:
             warnings.warn(
-                'Parameter `ftp_conn_id` is deprecated.' 'Please use `ssh_conn_id` instead.',
+                'Parameter `ftp_conn_id` is deprecated. Please use `ssh_conn_id` instead.',
                 DeprecationWarning,
                 stacklevel=2,
             )
-            kwargs['ssh_conn_id'] = ftp_conn_id
-        self.ssh_conn_id = ssh_conn_id
+            ssh_conn_id = ftp_conn_id
+        kwargs['ssh_conn_id'] = ssh_conn_id
         super().__init__(*args, **kwargs)
 
         self.conn = None
diff --git a/tests/providers/sftp/hooks/test_sftp.py b/tests/providers/sftp/hooks/test_sftp.py
index 38e0e7328451e..9c63402054a8d 100644
--- a/tests/providers/sftp/hooks/test_sftp.py
+++ b/tests/providers/sftp/hooks/test_sftp.py
@@ -334,6 +334,25 @@ def test_connection_success(self, mock_get_connection):
         assert status is True
         assert msg == 'Connection successfully tested'
 
+    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
+    def test_deprecation_ftp_conn_id(self, mock_get_connection):
+        connection = Connection(conn_id='ftp_default', login='login', host='host')
+        mock_get_connection.return_value = connection
+        # If `ftp_conn_id` is provided, it will be used but would show a deprecation warning.
+        with self.assertWarnsRegex(DeprecationWarning, "Parameter `ftp_conn_id` is deprecated"):
+            assert SFTPHook(ftp_conn_id='ftp_default').ssh_conn_id == 'ftp_default'
+
+        # If both are provided, ftp_conn_id  will be used but would show a deprecation warning.
+        with self.assertWarnsRegex(DeprecationWarning, "Parameter `ftp_conn_id` is deprecated"):
+            assert (
+                SFTPHook(ftp_conn_id='ftp_default', ssh_conn_id='sftp_default').ssh_conn_id == 'ftp_default'
+            )
+
+        # If `ssh_conn_id` is provided, it should use it for ssh_conn_id
+        assert SFTPHook(ssh_conn_id='sftp_default').ssh_conn_id == 'sftp_default'
+        # Default is 'sftp_default
+        assert SFTPHook().ssh_conn_id == 'sftp_default'
+
     def tearDown(self):
         shutil.rmtree(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
         os.remove(os.path.join(TMP_PATH, TMP_FILE_FOR_TESTS))
diff --git a/tests/providers/sftp/hooks/test_sftp_outdated.py b/tests/providers/sftp/hooks/test_sftp_outdated.py
deleted file mode 100644
index 72ba9def200c8..0000000000000
--- a/tests/providers/sftp/hooks/test_sftp_outdated.py
+++ /dev/null
@@ -1,340 +0,0 @@
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-import json
-import os
-import shutil
-import unittest
-from io import StringIO
-from unittest import mock
-
-import paramiko
-import pysftp
-from parameterized import parameterized
-
-from airflow.models import Connection
-from airflow.providers.sftp.hooks.sftp import SFTPHook
-from airflow.utils.session import provide_session
-
-
-def generate_host_key(pkey: paramiko.PKey):
-    key_fh = StringIO()
-    pkey.write_private_key(key_fh)
-    key_fh.seek(0)
-    key_obj = paramiko.RSAKey(file_obj=key_fh)
-    return key_obj.get_base64()
-
-
-TMP_PATH = '/tmp'
-TMP_DIR_FOR_TESTS = 'tests_sftp_hook_dir'
-SUB_DIR = "sub_dir"
-TMP_FILE_FOR_TESTS = 'test_file.txt'
-
-SFTP_CONNECTION_USER = "root"
-
-TEST_PKEY = paramiko.RSAKey.generate(4096)
-TEST_HOST_KEY = generate_host_key(pkey=TEST_PKEY)
-TEST_KEY_FILE = "~/.ssh/id_rsa"
-
-
-class TestSFTPHook(unittest.TestCase):
-    @provide_session
-    def update_connection(self, login, session=None):
-        connection = session.query(Connection).filter(Connection.conn_id == "sftp_default").first()
-        old_login = connection.login
-        connection.login = login
-        session.commit()
-        return old_login
-
-    def setUp(self):
-        self.old_login = self.update_connection(SFTP_CONNECTION_USER)
-        self.hook = SFTPHook(ftp_conn_id='sftp_default')
-        os.makedirs(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, SUB_DIR))
-
-        with open(os.path.join(TMP_PATH, TMP_FILE_FOR_TESTS), 'a') as file:
-            file.write('Test file')
-        with open(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, SUB_DIR, TMP_FILE_FOR_TESTS), 'a') as file:
-            file.write('Test file')
-
-    def test_get_conn(self):
-        output = self.hook.get_conn()
-        assert isinstance(output, pysftp.Connection)
-
-    def test_close_conn(self):
-        self.hook.conn = self.hook.get_conn()
-        assert self.hook.conn is not None
-        self.hook.close_conn()
-        assert self.hook.conn is None
-
-    def test_describe_directory(self):
-        output = self.hook.describe_directory(TMP_PATH)
-        assert TMP_DIR_FOR_TESTS in output
-
-    def test_list_directory(self):
-        output = self.hook.list_directory(path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        assert output == [SUB_DIR]
-
-    def test_create_and_delete_directory(self):
-        new_dir_name = 'new_dir'
-        self.hook.create_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, new_dir_name))
-        output = self.hook.describe_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        assert new_dir_name in output
-        self.hook.delete_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, new_dir_name))
-        output = self.hook.describe_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        assert new_dir_name not in output
-
-    def test_create_and_delete_directories(self):
-        base_dir = "base_dir"
-        sub_dir = "sub_dir"
-        new_dir_path = os.path.join(base_dir, sub_dir)
-        self.hook.create_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, new_dir_path))
-        output = self.hook.describe_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        assert base_dir in output
-        output = self.hook.describe_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, base_dir))
-        assert sub_dir in output
-        self.hook.delete_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, new_dir_path))
-        self.hook.delete_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, base_dir))
-        output = self.hook.describe_directory(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        assert new_dir_path not in output
-        assert base_dir not in output
-
-    def test_store_retrieve_and_delete_file(self):
-        self.hook.store_file(
-            remote_full_path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, TMP_FILE_FOR_TESTS),
-            local_full_path=os.path.join(TMP_PATH, TMP_FILE_FOR_TESTS),
-        )
-        output = self.hook.list_directory(path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        assert output == [SUB_DIR, TMP_FILE_FOR_TESTS]
-        retrieved_file_name = 'retrieved.txt'
-        self.hook.retrieve_file(
-            remote_full_path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, TMP_FILE_FOR_TESTS),
-            local_full_path=os.path.join(TMP_PATH, retrieved_file_name),
-        )
-        assert retrieved_file_name in os.listdir(TMP_PATH)
-        os.remove(os.path.join(TMP_PATH, retrieved_file_name))
-        self.hook.delete_file(path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, TMP_FILE_FOR_TESTS))
-        output = self.hook.list_directory(path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        assert output == [SUB_DIR]
-
-    def test_get_mod_time(self):
-        self.hook.store_file(
-            remote_full_path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, TMP_FILE_FOR_TESTS),
-            local_full_path=os.path.join(TMP_PATH, TMP_FILE_FOR_TESTS),
-        )
-        output = self.hook.get_mod_time(path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, TMP_FILE_FOR_TESTS))
-        assert len(output) == 14
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_no_host_key_check_default(self, get_connection):
-        connection = Connection(login='login', host='host')
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.no_host_key_check is False
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_no_host_key_check_enabled(self, get_connection):
-        connection = Connection(login='login', host='host', extra='{"no_host_key_check": true}')
-
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.no_host_key_check is True
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_no_host_key_check_disabled(self, get_connection):
-        connection = Connection(login='login', host='host', extra='{"no_host_key_check": false}')
-
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.no_host_key_check is False
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_ciphers(self, get_connection):
-        connection = Connection(login='login', host='host', extra='{"ciphers": ["A", "B", "C"]}')
-
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.ciphers == ["A", "B", "C"]
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_no_host_key_check_disabled_for_all_but_true(self, get_connection):
-        connection = Connection(login='login', host='host', extra='{"no_host_key_check": "foo"}')
-
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.no_host_key_check is False
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_no_host_key_check_ignore(self, get_connection):
-        connection = Connection(login='login', host='host', extra='{"ignore_hostkey_verification": true}')
-
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.no_host_key_check is True
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_no_host_key_check_no_ignore(self, get_connection):
-        connection = Connection(login='login', host='host', extra='{"ignore_hostkey_verification": false}')
-
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.no_host_key_check is False
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_host_key_default(self, get_connection):
-        connection = Connection(login='login', host='host')
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.host_key is None
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_host_key(self, get_connection):
-        connection = Connection(
-            login='login',
-            host='host',
-            extra=json.dumps({"host_key": TEST_HOST_KEY}),
-        )
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.host_key.get_base64() == TEST_HOST_KEY
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_host_key_with_type(self, get_connection):
-        connection = Connection(
-            login='login',
-            host='host',
-            extra=json.dumps({"host_key": "ssh-rsa " + TEST_HOST_KEY}),
-        )
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.host_key.get_base64() == TEST_HOST_KEY
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_host_key_with_no_host_key_check(self, get_connection):
-        connection = Connection(login='login', host='host', extra=json.dumps({"host_key": TEST_HOST_KEY}))
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.host_key is not None
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_key_content_as_str(self, get_connection):
-        file_obj = StringIO()
-        TEST_PKEY.write_private_key(file_obj)
-        file_obj.seek(0)
-        key_content_str = file_obj.read()
-
-        connection = Connection(
-            login='login',
-            host='host',
-            extra=json.dumps(
-                {
-                    "private_key": key_content_str,
-                }
-            ),
-        )
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.pkey == TEST_PKEY
-        assert hook.key_file is None
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_key_file(self, get_connection):
-        connection = Connection(
-            login='login',
-            host='host',
-            extra=json.dumps(
-                {
-                    "key_file": TEST_KEY_FILE,
-                }
-            ),
-        )
-        get_connection.return_value = connection
-        hook = SFTPHook()
-        assert hook.key_file == TEST_KEY_FILE
-
-    @parameterized.expand(
-        [
-            (os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS), True),
-            (os.path.join(TMP_PATH, TMP_FILE_FOR_TESTS), True),
-            (os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS + "abc"), False),
-            (os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, "abc"), False),
-        ]
-    )
-    def test_path_exists(self, path, exists):
-        result = self.hook.path_exists(path)
-        assert result == exists
-
-    @parameterized.expand(
-        [
-            ("test/path/file.bin", None, None, True),
-            ("test/path/file.bin", "test", None, True),
-            ("test/path/file.bin", "test/", None, True),
-            ("test/path/file.bin", None, "bin", True),
-            ("test/path/file.bin", "test", "bin", True),
-            ("test/path/file.bin", "test/", "file.bin", True),
-            ("test/path/file.bin", None, "file.bin", True),
-            ("test/path/file.bin", "diff", None, False),
-            ("test/path/file.bin", "test//", None, False),
-            ("test/path/file.bin", None, ".txt", False),
-            ("test/path/file.bin", "diff", ".txt", False),
-        ]
-    )
-    def test_path_match(self, path, prefix, delimiter, match):
-        result = self.hook._is_path_match(path=path, prefix=prefix, delimiter=delimiter)
-        assert result == match
-
-    def test_get_tree_map(self):
-        tree_map = self.hook.get_tree_map(path=os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        files, dirs, unknowns = tree_map
-
-        assert files == [os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, SUB_DIR, TMP_FILE_FOR_TESTS)]
-        assert dirs == [os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS, SUB_DIR)]
-        assert unknowns == []
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_connection_failure(self, mock_get_connection):
-        connection = Connection(
-            login='login',
-            host='host',
-        )
-        mock_get_connection.return_value = connection
-        with mock.patch.object(SFTPHook, 'get_conn') as get_conn:
-            type(get_conn.return_value).pwd = mock.PropertyMock(side_effect=Exception('Connection Error'))
-
-            hook = SFTPHook()
-            status, msg = hook.test_connection()
-        assert status is False
-        assert msg == 'Connection Error'
-
-    @mock.patch('airflow.providers.sftp.hooks.sftp.SFTPHook.get_connection')
-    def test_connection_success(self, mock_get_connection):
-        connection = Connection(
-            login='login',
-            host='host',
-        )
-        mock_get_connection.return_value = connection
-
-        with mock.patch.object(SFTPHook, 'get_conn') as get_conn:
-            get_conn.return_value.pwd = '/home/someuser'
-            hook = SFTPHook()
-            status, msg = hook.test_connection()
-        assert status is True
-        assert msg == 'Connection successfully tested'
-
-    def tearDown(self):
-        shutil.rmtree(os.path.join(TMP_PATH, TMP_DIR_FOR_TESTS))
-        os.remove(os.path.join(TMP_PATH, TMP_FILE_FOR_TESTS))
-        self.update_connection(self.old_login)
