diff --git a/cloud/deployment/fromfile/fromfile.go b/cloud/deployment/fromfile/fromfile.go
index ffe35f039..230b9d67f 100644
--- a/cloud/deployment/fromfile/fromfile.go
+++ b/cloud/deployment/fromfile/fromfile.go
@@ -24,6 +24,7 @@ var (
 	errInvalidEmail                   = errors.New("invalid email")
 	errCannotUpdateExistingDeployment = errors.New("already exists")
 	errNotFound                       = errors.New("does not exist")
+	errNotPermitted                   = errors.New("is not permitted")
 )
 
 const (
@@ -209,6 +210,11 @@ func getCreateOrUpdateInput(deploymentFromFile *inspect.FormattedDeployment, clu
 			WorkerQueues: listQueues,
 		}
 	case updateAction:
+		// check if cluster is being changed
+		if clusterID != existingDeployment.Cluster.ID {
+			return astro.CreateDeploymentInput{}, astro.UpdateDeploymentInput{},
+				fmt.Errorf("changing an existing deployment's cluster %w", errNotPermitted)
+		}
 		updateInput = astro.UpdateDeploymentInput{
 			ID:               existingDeployment.ID,
 			ClusterID:        clusterID,
diff --git a/cloud/deployment/fromfile/fromfile_test.go b/cloud/deployment/fromfile/fromfile_test.go
index 2a5b4e3a9..6ff6e857c 100644
--- a/cloud/deployment/fromfile/fromfile_test.go
+++ b/cloud/deployment/fromfile/fromfile_test.go
@@ -1792,6 +1792,22 @@ deployment:
 				ID:          "test-deployment-id",
 				Label:       "test-deployment-label",
 				Description: "description",
+				Cluster: astro.Cluster{
+					ID:   "test-cluster-id",
+					Name: "test-cluster",
+					NodePools: []astro.NodePool{
+						{
+							ID:               "test-pool-id",
+							IsDefault:        false,
+							NodeInstanceType: "test-worker-1",
+						},
+						{
+							ID:               "test-pool-id-2",
+							IsDefault:        false,
+							NodeInstanceType: "test-worker-2",
+						},
+					},
+				},
 			}
 			updatedDeployment := astro.Deployment{
 				ID:          "test-deployment-id",
@@ -1952,6 +1968,22 @@ deployment:
 				ID:          "test-deployment-id",
 				Label:       "test-deployment-label",
 				Description: "description",
+				Cluster: astro.Cluster{
+					ID:   "test-cluster-id",
+					Name: "test-cluster",
+					NodePools: []astro.NodePool{
+						{
+							ID:               "test-pool-id",
+							IsDefault:        false,
+							NodeInstanceType: "test-worker-1",
+						},
+						{
+							ID:               "test-pool-id-2",
+							IsDefault:        false,
+							NodeInstanceType: "test-worker-2",
+						},
+					},
+				},
 			}
 			updatedDeployment := astro.Deployment{
 				ID:          "test-deployment-id",
@@ -2291,6 +2323,22 @@ deployment:
 				ID:          "test-deployment-id",
 				Label:       "test-deployment-label",
 				Description: "description",
+				Cluster: astro.Cluster{
+					ID:   "test-cluster-id",
+					Name: "test-cluster",
+					NodePools: []astro.NodePool{
+						{
+							ID:               "test-pool-id",
+							IsDefault:        false,
+							NodeInstanceType: "test-worker-1",
+						},
+						{
+							ID:               "test-pool-id-2",
+							IsDefault:        false,
+							NodeInstanceType: "test-worker-2",
+						},
+					},
+				},
 			}
 			orgID = "test-org-id"
 			mockWorkerQueueDefaultOptions = astro.WorkerQueueDefaultOptions{
@@ -2777,6 +2825,32 @@ func TestGetCreateOrUpdateInput(t *testing.T) {
 			assert.Equal(t, expectedUpdateDeploymentInput, actualUpdateInput)
 			mockClient.AssertExpectations(t)
 		})
+		t.Run("returns an error if the cluster is being changed", func(t *testing.T) {
+			deploymentID = "test-deployment-id"
+			deploymentFromFile = inspect.FormattedDeployment{}
+			expectedUpdateDeploymentInput = astro.UpdateDeploymentInput{}
+			deploymentFromFile.Deployment.Configuration.ClusterName = "test-cluster-1"
+			deploymentFromFile.Deployment.Configuration.Name = "test-deployment-modified"
+			deploymentFromFile.Deployment.Configuration.Description = "test-description"
+			deploymentFromFile.Deployment.Configuration.RunTimeVersion = "test-runtime-v"
+			deploymentFromFile.Deployment.Configuration.SchedulerAU = 4
+			deploymentFromFile.Deployment.Configuration.SchedulerCount = 2
+			existingDeployment := astro.Deployment{
+				ID:    deploymentID,
+				Label: "test-deployment",
+				Cluster: astro.Cluster{
+					ID: "test-cluster-id",
+				},
+			}
+
+			expectedUpdateDeploymentInput = astro.UpdateDeploymentInput{}
+			mockClient := new(astro_mocks.Client)
+			_, actualUpdateInput, err = getCreateOrUpdateInput(&deploymentFromFile, "diff-cluster", workspaceID, "update", &existingDeployment, nil, mockClient)
+			assert.ErrorIs(t, err, errNotPermitted)
+			assert.ErrorContains(t, err, "changing an existing deployment's cluster is not permitted")
+			assert.Equal(t, expectedUpdateDeploymentInput, actualUpdateInput)
+			mockClient.AssertExpectations(t)
+		})
 		t.Run("returns correct update deployment input when multiple queues are requested", func(t *testing.T) {
 			deploymentID = "test-deployment-id"
 			deploymentFromFile = inspect.FormattedDeployment{}
diff --git a/cmd/cloud/deployment.go b/cmd/cloud/deployment.go
index 1c838a0ed..21bddc42a 100644
--- a/cmd/cloud/deployment.go
+++ b/cmd/cloud/deployment.go
@@ -331,6 +331,9 @@ func deploymentUpdate(cmd *cobra.Command, args []string, out io.Writer) error {
 		return errors.Wrap(err, "failed to find a valid workspace")
 	}
 
+	// Silence Usage as we have now validated command input
+	cmd.SilenceUsage = true
+
 	// request is to update from a file
 	if inputFile != "" {
 		requestedFlags := cmd.Flags().NFlag()
@@ -344,9 +347,6 @@ func deploymentUpdate(cmd *cobra.Command, args []string, out io.Writer) error {
 		return errors.New("Invalid --dag-deploy value)")
 	}
 
-	// Silence Usage as we have now validated command input
-	cmd.SilenceUsage = true
-
 	// Get release name from args, if passed
 	if len(args) > 0 {
 		deploymentID = args[0]
diff --git a/cmd/cloud/deployment_test.go b/cmd/cloud/deployment_test.go
index 48b03361e..70be7b250 100644
--- a/cmd/cloud/deployment_test.go
+++ b/cmd/cloud/deployment_test.go
@@ -11,6 +11,7 @@ import (
 	airflowversions "github.com/astronomer/astro-cli/airflow_versions"
 	astro "github.com/astronomer/astro-cli/astro-client"
 	astro_mocks "github.com/astronomer/astro-cli/astro-client/mocks"
+	"github.com/astronomer/astro-cli/config"
 	"github.com/astronomer/astro-cli/pkg/fileutil"
 	testUtil "github.com/astronomer/astro-cli/pkg/testing"
 
@@ -315,6 +316,20 @@ func TestDeploymentUpdate(t *testing.T) {
 	_, err = execDeploymentCmd(cmdArgs...)
 	assert.Error(t, err)
 
+	t.Run("returns an error when getting workspace fails", func(t *testing.T) {
+		testUtil.InitTestConfig(testUtil.CloudPlatform)
+		ctx, err := config.GetCurrentContext()
+		assert.NoError(t, err)
+		ctx.Workspace = ""
+		err = ctx.SetContext()
+		assert.NoError(t, err)
+		defer testUtil.InitTestConfig(testUtil.CloudPlatform)
+		expectedOut := "Usage:\n"
+		cmdArgs := []string{"update", "-n", "doesnotexist"}
+		resp, err := execDeploymentCmd(cmdArgs...)
+		assert.ErrorContains(t, err, "failed to find a valid workspace")
+		assert.Contains(t, resp, expectedOut)
+	})
 	t.Run("updates a deployment from file", func(t *testing.T) {
 		orgID := "test-org-id"
 		filePath := "./test-deployment.yaml"
@@ -385,8 +400,9 @@ deployment:
 			},
 		}
 		updatedDeployment := astro.Deployment{
-			ID:    "test-deployment-id",
-			Label: "test-deployment-label",
+			ID:      "test-deployment-id",
+			Label:   "test-deployment-label",
+			Cluster: astro.Cluster{ID: "test-cluster-id", Name: "test-cluster"},
 		}
 		mockWorkerQueueDefaultOptions := astro.WorkerQueueDefaultOptions{
 			MinWorkerCount: astro.WorkerQueueOption{