diff --git a/changelogs/fragments/12063-flatpak-id-check.yml b/changelogs/fragments/12063-flatpak-id-check.yml
new file mode 100644
index 0000000000..cf79636e7e
--- /dev/null
+++ b/changelogs/fragments/12063-flatpak-id-check.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - flatpak - fix reporting ``changed`` on already present flatpaks with a dash in the last part of the ID (https://github.com/ansible-collections/community.general/issues/12062, https://github.com/ansible-collections/community.general/pull/12063).
diff --git a/plugins/modules/flatpak.py b/plugins/modules/flatpak.py
index fe3659a006..ee2898b653 100644
--- a/plugins/modules/flatpak.py
+++ b/plugins/modules/flatpak.py
@@ -184,6 +184,7 @@ command:
   sample: "/usr/bin/flatpak install --user --nontinteractive flathub org.gnome.Calculator"
 """
 
+from re import match
 from urllib.parse import urlparse
 
 from ansible.module_utils.basic import AnsibleModule
@@ -324,15 +325,7 @@ def _is_flatpak_id(part):
     # https://docs.flatpak.org/en/latest/conventions.html#application-ids
     # Flathub:
     # https://docs.flathub.org/docs/for-app-authors/requirements#application-id
-    if "." not in part:
-        return False
-    sections = part.split(".")
-    if len(sections) < 2:
-        return False
-    domain = sections[0]
-    if not domain.islower():
-        return False
-    return all(section.isalnum() for section in sections[1:])
+    return match(r"^[a-z]{2,}(\.\w+)+\.[\w-]+$", part)
 
 
 def _parse_flatpak_name(name):