diff --git a/packages/flutter/lib/src/material/search_anchor.dart b/packages/flutter/lib/src/material/search_anchor.dart
index 90187b84bd3..cf7d6c07f16 100644
--- a/packages/flutter/lib/src/material/search_anchor.dart
+++ b/packages/flutter/lib/src/material/search_anchor.dart
@@ -740,6 +740,8 @@ class _ViewContentState extends State<_ViewContent> {
   late Rect _viewRect;
   late final SearchController _controller;
   Iterable<Widget> result = <Widget>[];
+  String? searchValue;
+  Timer? _timer;
 
   @override
   void initState() {
@@ -770,12 +772,23 @@ class _ViewContentState extends State<_ViewContent> {
         _viewRect = Offset.zero & _screenSize!;
       }
     }
-    unawaited(updateSuggestions());
+
+    if (searchValue != _controller.text) {
+      _timer?.cancel();
+      _timer = Timer(Duration.zero, () async {
+        searchValue = _controller.text;
+        result = await widget.suggestionsBuilder(context, _controller);
+        _timer?.cancel();
+        _timer = null;
+      });
+    }
   }
 
   @override
   void dispose() {
     _controller.removeListener(updateSuggestions);
+    _timer?.cancel();
+    _timer = null;
     super.dispose();
   }
 
@@ -793,11 +806,14 @@ class _ViewContentState extends State<_ViewContent> {
   }
 
   Future<void> updateSuggestions() async {
-    final Iterable<Widget> suggestions = await widget.suggestionsBuilder(context, _controller);
-    if (mounted) {
-      setState(() {
-        result = suggestions;
-      });
+    if (searchValue != _controller.text) {
+      searchValue = _controller.text;
+      final Iterable<Widget> suggestions = await widget.suggestionsBuilder(context, _controller);
+      if (mounted) {
+        setState(() {
+          result = suggestions;
+        });
+      }
     }
   }
 
diff --git a/packages/flutter/test/material/search_anchor_test.dart b/packages/flutter/test/material/search_anchor_test.dart
index 4775e858dcd..76ed139616d 100644
--- a/packages/flutter/test/material/search_anchor_test.dart
+++ b/packages/flutter/test/material/search_anchor_test.dart
@@ -3131,6 +3131,104 @@ void main() {
     await tester.pump();
     expect(find.widgetWithIcon(IconButton, Icons.close), findsNothing);
   });
+
+  // This is a regression test for https://github.com/flutter/flutter/issues/139880.
+  testWidgets('suggestionsBuilder with Future is not called twice on layout resize', (WidgetTester tester) async {
+    int suggestionsLoadingCount = 0;
+
+    Future<List<String>> createListData() async {
+      return List<String>.generate(1000, (int index) {
+        return  'Hello World - $index';
+      });
+    }
+
+    await tester.pumpWidget(MaterialApp(
+      home: Scaffold(
+        body: Center(
+          child: SearchAnchor(
+            builder: (BuildContext context, SearchController controller) {
+              return const Icon(Icons.search);
+            },
+            suggestionsBuilder: (BuildContext context, SearchController controller) {
+              return <Widget>[
+                FutureBuilder<List<String>>(
+                  future: createListData(),
+                  builder: (BuildContext context, AsyncSnapshot<List<String>> snapshot) {
+                    if (snapshot.connectionState != ConnectionState.done) {
+                      return const LinearProgressIndicator();
+                    }
+                    final List<String>? result = snapshot.data;
+                    if (result == null) {
+                      return const LinearProgressIndicator();
+                    }
+                    suggestionsLoadingCount++;
+                    return SingleChildScrollView(
+                      child: Column(
+                        children: result.map((String text) {
+                          return ListTile(title: Text(text));
+                        }).toList(),
+                      ),
+                    );
+                  },
+                ),
+              ];
+            },
+          ),
+        ),
+      ),
+    ));
+    await tester.pump();
+    await tester.tap(find.byIcon(Icons.search)); // Open search view.
+    await tester.pumpAndSettle();
+
+    // Simulate the keyboard opening resizing the view.
+    tester.view.viewInsets = const FakeViewPadding(bottom: 500.0);
+    addTearDown(tester.view.reset);
+    await tester.pumpAndSettle();
+
+    expect(suggestionsLoadingCount, 1);
+  });
+
+  // This is a regression test for https://github.com/flutter/flutter/issues/139880.
+  testWidgets('suggestionsBuilder is not called when the search value does not change', (WidgetTester tester) async {
+    int suggestionsBuilderCalledCount = 0;
+
+    await tester.pumpWidget(MaterialApp(
+      home: Scaffold(
+        body: Center(
+          child: SearchAnchor(
+            builder: (BuildContext context, SearchController controller) {
+              return const Icon(Icons.search);
+            },
+            suggestionsBuilder: (BuildContext context, SearchController controller) {
+              suggestionsBuilderCalledCount++;
+              return <Widget>[];
+            },
+          ),
+        ),
+      ),
+    ));
+    await tester.pump();
+    await tester.tap(find.byIcon(Icons.search)); // Open search view.
+    await tester.pumpAndSettle();
+
+    // Simulate the keyboard opening resizing the view.
+    tester.view.viewInsets = const FakeViewPadding(bottom: 500.0);
+    addTearDown(tester.view.reset);
+    // Show the keyboard.
+    await tester.showKeyboard(find.byType(TextField));
+    await tester.pumpAndSettle();
+
+    expect(suggestionsBuilderCalledCount, 2);
+
+    // Remove the viewInset, as if the keyboard were hidden.
+    tester.view.resetViewInsets();
+    // Hide the keyboard.
+    await tester.testTextInput.receiveAction(TextInputAction.done);
+    await tester.pumpAndSettle();
+
+    expect(suggestionsBuilderCalledCount, 2);
+  });
 }
 
 Future<void> checkSearchBarDefaults(WidgetTester tester, ColorScheme colorScheme, Material material) async {