diff --git a/src/Symfony/Component/Routing/Loader/Configurator/RouteConfigurator.php b/src/Symfony/Component/Routing/Loader/Configurator/RouteConfigurator.php
index d9d441da19a3..26a2e3857e09 100644
--- a/src/Symfony/Component/Routing/Loader/Configurator/RouteConfigurator.php
+++ b/src/Symfony/Component/Routing/Loader/Configurator/RouteConfigurator.php
@@ -42,7 +42,14 @@ public function __construct(RouteCollection $collection, RouteCollection $route,
      */
     final public function host(string|array $host): static
     {
+        $previousRoutes = clone $this->route;
         $this->addHost($this->route, $host);
+        foreach ($previousRoutes as $name => $route) {
+            if (!$this->route->get($name)) {
+                $this->collection->remove($name);
+            }
+        }
+        $this->collection->addCollection($this->route);
 
         return $this;
     }
diff --git a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
index 2518161ae0c9..1e3e3283dcab 100644
--- a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
@@ -135,7 +135,7 @@ protected function parseRoute(RouteCollection $collection, \DOMElement $node, st
             throw new \InvalidArgumentException(sprintf('The <route> element in file "%s" must not have both a "path" attribute and <path> child nodes.', $path));
         }
 
-        $routes = $this->createLocalizedRoute($collection, $id, $paths ?: $node->getAttribute('path'));
+        $routes = $this->createLocalizedRoute(new RouteCollection(), $id, $paths ?: $node->getAttribute('path'));
         $routes->addDefaults($defaults);
         $routes->addRequirements($requirements);
         $routes->addOptions($options);
@@ -146,6 +146,8 @@ protected function parseRoute(RouteCollection $collection, \DOMElement $node, st
         if (null !== $hosts) {
             $this->addHost($routes, $hosts);
         }
+
+        $collection->addCollection($routes);
     }
 
     /**
diff --git a/src/Symfony/Component/Routing/Loader/YamlFileLoader.php b/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
index 9605e9a8772e..09beb7cd5473 100644
--- a/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/YamlFileLoader.php
@@ -157,7 +157,7 @@ protected function parseRoute(RouteCollection $collection, string $name, array $
             $defaults['_stateless'] = $config['stateless'];
         }
 
-        $routes = $this->createLocalizedRoute($collection, $name, $config['path']);
+        $routes = $this->createLocalizedRoute(new RouteCollection(), $name, $config['path']);
         $routes->addDefaults($defaults);
         $routes->addRequirements($requirements);
         $routes->addOptions($options);
@@ -168,6 +168,8 @@ protected function parseRoute(RouteCollection $collection, string $name, array $
         if (isset($config['host'])) {
             $this->addHost($routes, $config['host']);
         }
+
+        $collection->addCollection($routes);
     }
 
     /**
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts-expected-collection.php b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts-expected-collection.php
new file mode 100644
index 000000000000..afff1f0bcdcf
--- /dev/null
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts-expected-collection.php
@@ -0,0 +1,23 @@
+<?php
+
+use Symfony\Component\Config\Resource\FileResource;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+return function (string $format) {
+    $expectedRoutes = new RouteCollection();
+    $expectedRoutes->add('static.en', $route = new Route('/example'));
+    $route->setHost('www.example.com');
+    $route->setRequirement('_locale', 'en');
+    $route->setDefault('_locale', 'en');
+    $route->setDefault('_canonical_route', 'static');
+    $expectedRoutes->add('static.nl', $route = new Route('/example'));
+    $route->setHost('www.example.nl');
+    $route->setRequirement('_locale', 'nl');
+    $route->setDefault('_locale', 'nl');
+    $route->setDefault('_canonical_route', 'static');
+
+    $expectedRoutes->addResource(new FileResource(__DIR__."/route-with-hosts.$format"));
+
+    return $expectedRoutes;
+};
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.php b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.php
new file mode 100644
index 000000000000..44472d77ae17
--- /dev/null
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Symfony\Component\Routing\Loader\Configurator;
+
+return function (RoutingConfigurator $routes) {
+    $routes->add('static', '/example')->host([
+        'nl' => 'www.example.nl',
+        'en' => 'www.example.com',
+    ]);
+};
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.xml b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.xml
new file mode 100644
index 000000000000..f4b16e4d8070
--- /dev/null
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<routes xmlns="http://symfony.com/schema/routing"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://symfony.com/schema/routing
+        https://symfony.com/schema/routing/routing-1.0.xsd">
+    <route id="static" path="/example">
+        <host locale="nl">www.example.nl</host>
+        <host locale="en">www.example.com</host>
+    </route>
+</routes>
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.yml b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.yml
new file mode 100644
index 000000000000..c340f71ff016
--- /dev/null
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/locale_and_host/route-with-hosts.yml
@@ -0,0 +1,6 @@
+---
+static:
+    path: /example
+    host:
+        nl: www.example.nl
+        en: www.example.com
diff --git a/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
index dbe45bcf82ec..2ec8bd04ddac 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/PhpFileLoaderTest.php
@@ -317,6 +317,16 @@ public function testImportingRoutesWithSingleHostInImporter()
         $this->assertEquals($expectedRoutes('php'), $routes);
     }
 
+    public function testAddingRouteWithHosts()
+    {
+        $loader = new PhpFileLoader(new FileLocator([__DIR__.'/../Fixtures/locale_and_host']));
+        $routes = $loader->load('route-with-hosts.php');
+
+        $expectedRoutes = require __DIR__.'/../Fixtures/locale_and_host/route-with-hosts-expected-collection.php';
+
+        $this->assertEquals($expectedRoutes('php'), $routes);
+    }
+
     public function testImportingAliases()
     {
         $loader = new PhpFileLoader(new FileLocator([__DIR__.'/../Fixtures/alias']));
diff --git a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
index 9e42db7a7e6f..83859120e31f 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
@@ -577,6 +577,16 @@ public function testImportingRoutesWithSingleHostsInImporter()
         $this->assertEquals($expectedRoutes('xml'), $routes);
     }
 
+    public function testAddingRouteWithHosts()
+    {
+        $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures/locale_and_host']));
+        $routes = $loader->load('route-with-hosts.xml');
+
+        $expectedRoutes = require __DIR__.'/../Fixtures/locale_and_host/route-with-hosts-expected-collection.php';
+
+        $this->assertEquals($expectedRoutes('xml'), $routes);
+    }
+
     public function testWhenEnv()
     {
         $loader = new XmlFileLoader(new FileLocator([__DIR__.'/../Fixtures']), 'some-env');
diff --git a/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
index 6573fd0138ac..1e34386818e6 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/YamlFileLoaderTest.php
@@ -443,6 +443,16 @@ public function testImportingRoutesWithSingleHostInImporter()
         $this->assertEquals($expectedRoutes('yml'), $routes);
     }
 
+    public function testAddingRouteWithHosts()
+    {
+        $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures/locale_and_host']));
+        $routes = $loader->load('route-with-hosts.yml');
+
+        $expectedRoutes = require __DIR__.'/../Fixtures/locale_and_host/route-with-hosts-expected-collection.php';
+
+        $this->assertEquals($expectedRoutes('yml'), $routes);
+    }
+
     public function testWhenEnv()
     {
         $loader = new YamlFileLoader(new FileLocator([__DIR__.'/../Fixtures']), 'some-env');

<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head>
<title>pFad - Phonifier reborn</title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />
</head>
<body>
<h1>Pfad - The Proxy pFad of &#169; 2024 Garber Painting. All rights reserved.</h1>


<!-- Disclaimer -->
<p>Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.</p>
<br>
<p>Alternative Proxies:</p><p><a href="http://rainy.clevelandohioweatherforecast.com/php-proxy/index.php?q=https://patch-diff.githubusercontent.com/raw/symfony/symfony/pull/59446.diff" target="_blank">Alternative Proxy</a></p><p><a href="http://rainy.clevelandohioweatherforecast.com/pFad/index.php?u=https://patch-diff.githubusercontent.com/raw/symfony/symfony/pull/59446.diff" target="_blank">pFad Proxy</a></p><p><a href="http://rainy.clevelandohioweatherforecast.com/pFad/v3index.php?u=https://patch-diff.githubusercontent.com/raw/symfony/symfony/pull/59446.diff" target="_blank">pFad v3 Proxy</a></p><p><a href="http://rainy.clevelandohioweatherforecast.com/pFad/v4index.php?u=https://patch-diff.githubusercontent.com/raw/symfony/symfony/pull/59446.diff" target="_blank">pFad v4 Proxy</a></p></body>
</html>