diff --git a/CHANGELOG.md b/CHANGELOG.md
index a1af07bdd4..fc82139467 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Unreleased
 
+* Feat: Configure idle transaction duration (#705)
 * Fix: `maxRequestBodySize` should be `never` by default when using the FailedRequestClientAdapter directly (#701)
 
 # 6.3.0-beta.2
diff --git a/flutter/lib/src/navigation/sentry_navigator_observer.dart b/flutter/lib/src/navigation/sentry_navigator_observer.dart
index 1d64b6e356..45fba0c277 100644
--- a/flutter/lib/src/navigation/sentry_navigator_observer.dart
+++ b/flutter/lib/src/navigation/sentry_navigator_observer.dart
@@ -41,9 +41,10 @@ typedef AdditionalInfoExtractor = Map<String, dynamic>? Function(
 /// ```
 ///
 /// The option [enableAutoTransactions] is enabled by default. For every new
-/// route a transaction is started. It's automatically finished after 3 seconds
-/// or when all child spans are finished, if those happen to take longer. The
-/// transaction will be set to [Scope.span] if the latter is empty.
+/// route a transaction is started. It's automatically finished after
+/// [autoFinishAfter] duration or when all child spans are finished,
+/// if those happen to take longer. The transaction will be set to [Scope.span]
+/// if the latter is empty.
 ///
 /// Enabling the [setRouteNameAsTransaction] option overrides the current
 /// [Scope.transaction] which will also override the name of the current
@@ -57,17 +58,20 @@ class SentryNavigatorObserver extends RouteObserver<PageRoute<dynamic>> {
   SentryNavigatorObserver({
     Hub? hub,
     bool enableAutoTransactions = true,
+    Duration autoFinishAfter = const Duration(seconds: 3),
     bool setRouteNameAsTransaction = false,
     RouteNameExtractor? routeNameExtractor,
     AdditionalInfoExtractor? additionalInfoProvider,
   })  : _hub = hub ?? HubAdapter(),
         _enableAutoTransactions = enableAutoTransactions,
+        _autoFinishAfter = autoFinishAfter,
         _setRouteNameAsTransaction = setRouteNameAsTransaction,
         _routeNameExtractor = routeNameExtractor,
         _additionalInfoProvider = additionalInfoProvider;
 
   final Hub _hub;
   final bool _enableAutoTransactions;
+  final Duration _autoFinishAfter;
   final bool _setRouteNameAsTransaction;
   final RouteNameExtractor? _routeNameExtractor;
   final AdditionalInfoExtractor? _additionalInfoProvider;
@@ -152,7 +156,7 @@ class SentryNavigatorObserver extends RouteObserver<PageRoute<dynamic>> {
       name,
       'navigation',
       waitForChildren: true,
-      autoFinishAfter: Duration(seconds: 3),
+      autoFinishAfter: _autoFinishAfter,
     );
     if (arguments != null) {
       _transaction?.setData('route_settings_arguments', arguments);
diff --git a/flutter/test/sentry_navigator_observer_test.dart b/flutter/test/sentry_navigator_observer_test.dart
index 6afb05ed49..f9cd92eee9 100644
--- a/flutter/test/sentry_navigator_observer_test.dart
+++ b/flutter/test/sentry_navigator_observer_test.dart
@@ -39,7 +39,10 @@ void main() {
       final hub = _MockHub();
       final span = MockNoOpSentrySpan();
       _whenAnyStart(hub, span);
-      final sut = fixture.getSut(hub: hub);
+      final sut = fixture.getSut(
+        hub: hub,
+        autoFinishAfter: Duration(seconds: 5),
+      );
 
       sut.didPush(currentRoute, null);
 
@@ -47,7 +50,7 @@ void main() {
         'Current Route',
         'navigation',
         waitForChildren: true,
-        autoFinishAfter: Duration(seconds: 3),
+        autoFinishAfter: Duration(seconds: 5),
       ));
 
       hub.configureScope((scope) {
@@ -583,6 +586,7 @@ class Fixture {
   SentryNavigatorObserver getSut({
     required Hub hub,
     bool enableAutoTransactions = true,
+    Duration autoFinishAfter = const Duration(seconds: 3),
     bool setRouteNameAsTransaction = false,
     RouteNameExtractor? routeNameExtractor,
     AdditionalInfoExtractor? additionalInfoProvider,
@@ -590,6 +594,7 @@ class Fixture {
     return SentryNavigatorObserver(
       hub: hub,
       enableAutoTransactions: enableAutoTransactions,
+      autoFinishAfter: autoFinishAfter,
       setRouteNameAsTransaction: setRouteNameAsTransaction,
       routeNameExtractor: routeNameExtractor,
       additionalInfoProvider: additionalInfoProvider,