diff --git a/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/ConsoleAppSamplesValidation.cs b/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/ConsoleAppSamplesValidation.cs
index 7b8fa3a8f9..640d2ce37d 100644
--- a/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/ConsoleAppSamplesValidation.cs
+++ b/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/ConsoleAppSamplesValidation.cs
@@ -30,7 +30,7 @@ protected override void ConfigureAdditionalEnvironmentVariables(ProcessStartInfo
         setEnvVar("REDIS_CONNECTION_STRING", $"localhost:{RedisPort}");
     }
 
-    [Fact]
+    [Fact(Skip = SkipFlakyTimingTest)]
     public async Task SingleAgentSampleValidationAsync()
     {
         using CancellationTokenSource testTimeoutCts = this.CreateTestTimeoutCts();
@@ -69,7 +69,7 @@ await this.RunSampleTestAsync(samplePath, async (process, logs) =>
         });
     }
 
-    [Fact]
+    [Fact(Skip = SkipFlakyTimingTest)]
     public async Task SingleAgentOrchestrationChainingSampleValidationAsync()
     {
         using CancellationTokenSource testTimeoutCts = this.CreateTestTimeoutCts();
@@ -105,7 +105,7 @@ await this.RunSampleTestAsync(samplePath, async (process, logs) =>
         });
     }
 
-    [Fact]
+    [Fact(Skip = SkipFlakyTimingTest)]
     public async Task MultiAgentConcurrencySampleValidationAsync()
     {
         using CancellationTokenSource testTimeoutCts = this.CreateTestTimeoutCts();
@@ -160,7 +160,7 @@ await this.RunSampleTestAsync(samplePath, async (process, logs) =>
         });
     }
 
-    [Fact]
+    [Fact(Skip = SkipFlakyTimingTest)]
     public async Task MultiAgentConditionalSampleValidationAsync()
     {
         using CancellationTokenSource testTimeoutCts = this.CreateTestTimeoutCts();
diff --git a/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/WorkflowConsoleAppSamplesValidation.cs b/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/WorkflowConsoleAppSamplesValidation.cs
index f137e4abd9..708243c853 100644
--- a/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/WorkflowConsoleAppSamplesValidation.cs
+++ b/dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/WorkflowConsoleAppSamplesValidation.cs
@@ -10,6 +10,8 @@ namespace Microsoft.Agents.AI.DurableTask.IntegrationTests;
 [Trait("Category", "SampleValidation")]
 public sealed class WorkflowConsoleAppSamplesValidation(ITestOutputHelper outputHelper) : SamplesValidationBase(outputHelper)
 {
+    private const string SkipFlakyTimingTest = "Flaky: timing-dependent LLM test, see https://github.com/microsoft/agent-framework/issues/4971";
+
     // In CI, `dotnet run` builds samples from scratch and LLM calls add latency, so 60s is not enough.
     private static readonly TimeSpan s_testTimeout = TimeSpan.FromSeconds(180);
 
@@ -505,7 +507,7 @@ await this.RunSampleTestAsync(samplePath, (process, logs) =>
         });
     }
 
-    [Fact]
+    [Fact(Skip = SkipFlakyTimingTest)]
     public async Task WorkflowAndAgentsSampleValidationAsync()
     {
         using CancellationTokenSource testTimeoutCts = this.CreateTestTimeoutCts(s_testTimeout);