diff --git a/dev/breeze/src/airflow_breeze/commands/testing_commands.py b/dev/breeze/src/airflow_breeze/commands/testing_commands.py
index ec672cd2a02d4..52d178d71bbde 100644
--- a/dev/breeze/src/airflow_breeze/commands/testing_commands.py
+++ b/dev/breeze/src/airflow_breeze/commands/testing_commands.py
@@ -1471,11 +1471,13 @@ def ui_e2e_tests(
     from pathlib import Path
 
     from airflow_breeze.utils.console import get_console
-    from airflow_breeze.utils.run_utils import run_command
+    from airflow_breeze.utils.run_utils import check_pnpm_installed, run_command
     from airflow_breeze.utils.shared_options import get_dry_run, get_verbose
 
     perform_environment_checks()
 
+    check_pnpm_installed()
+
     airflow_root = Path(__file__).resolve().parents[5]
     ui_dir = airflow_root / "airflow-core" / "src" / "airflow" / "ui"
 
diff --git a/dev/breeze/src/airflow_breeze/utils/run_utils.py b/dev/breeze/src/airflow_breeze/utils/run_utils.py
index 8c34f1e8a16f5..7a5374f3466db 100644
--- a/dev/breeze/src/airflow_breeze/utils/run_utils.py
+++ b/dev/breeze/src/airflow_breeze/utils/run_utils.py
@@ -260,6 +260,42 @@ def assert_prek_installed():
         sys.exit(1)
 
 
+def check_pnpm_installed():
+    """
+    Check if pnpm is installed and install it if npm is available.
+    """
+    if shutil.which("pnpm"):
+        return
+
+    get_console().print("[warning]pnpm is not installed. Installing pnpm...[/]")
+
+    # Check if npm is available (required to install pnpm)
+    if not shutil.which("npm"):
+        get_console().print("[error]npm is not installed. Please install Node.js and npm first.[/]")
+        get_console().print("[warning]Visit: https://nodejs.org/[/]")
+        sys.exit(1)
+
+    try:
+        get_console().print("[info]Installing pnpm using npm...[/]")
+        result = run_command(
+            ["npm", "install", "-g", "pnpm"],
+            no_output_dump_on_exception=True,
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+        if result.returncode == 0:
+            get_console().print("[success]pnpm has been installed successfully![/]")
+        else:
+            get_console().print(f"[error]Failed to install pnpm: {result.stderr}[/]")
+            get_console().print("[warning]Please install pnpm manually: https://pnpm.io/installation[/]")
+            sys.exit(1)
+    except Exception as e:
+        get_console().print(f"[error]Failed to install pnpm: {e}[/]")
+        get_console().print("[warning]Please install pnpm manually: https://pnpm.io/installation[/]")
+        sys.exit(1)
+
+
 def get_filesystem_type(filepath: str):
     """
     Determine the type of filesystem used - we might want to use different parameters if tmpfs is used.