diff --git a/src/widgets/krun.cpp b/src/widgets/krun.cpp
--- a/src/widgets/krun.cpp
+++ b/src/widgets/krun.cpp
@@ -46,6 +46,7 @@
 #include <QDBusInterface>
 #include <QDBusReply>
 #include <QHostInfo>
+#include <QDesktopServices>
 
 #include <kiconloader.h>
 #include <kjobuidelegate.h>
@@ -83,8 +84,6 @@
 
 #if HAVE_X11
 #include <kwindowsystem.h>
-#elif defined(Q_OS_WIN)
-#include <QDesktopServices>
 #endif
 #include <qstandardpaths.h>
 
@@ -122,6 +121,13 @@
     return KProtocolInfo::exec(protocol);
 }
 
+static bool checkNeedPortalSupport()
+{
+    return !QStandardPaths::locate(QStandardPaths::RuntimeLocation,
+                                   QLatin1String("flatpak-info")).isEmpty() ||
+            qEnvironmentVariableIsSet("SNAP");
+}
+
 // ---------------------------------------------------------------------------
 
 bool KRun::isExecutableFile(const QUrl &url, const QString &mimetype)
@@ -947,6 +953,14 @@
         return;
     }
 
+    if (d->m_externalBrowserEnabled && checkNeedPortalSupport()) {
+        // use the function from QDesktopServices as it handles portals correctly
+        d->m_bFault = !QDesktopServices::openUrl(d->m_strURL);
+        d->m_bFinished = true;
+        d->startTimer();
+        return;
+    }
+
     if (!d->m_externalBrowser.isEmpty() && d->m_strURL.scheme().startsWith(QLatin1String("http"))) {
         if (d->runExecutable(d->m_externalBrowser)) {
             return;
@@ -1419,7 +1433,8 @@
 
 void KRun::setEnableExternalBrowser(bool b)
 {
-    if (b) {
+    d->m_externalBrowserEnabled = b;
+    if (d->m_externalBrowserEnabled) {
         d->m_externalBrowser = KConfigGroup(KSharedConfig::openConfig(), "General").readEntry("BrowserApplication");
 
         // If a default browser isn't set in kdeglobals, fall back to mimeapps.list
diff --git a/src/widgets/krun_p.h b/src/widgets/krun_p.h
--- a/src/widgets/krun_p.h
+++ b/src/widgets/krun_p.h
@@ -136,6 +136,8 @@
      * This action is invoked from slotTimeout.
      */
     bool m_bCheckPrompt;
+
+    bool m_externalBrowserEnabled;
 };
 
 #endif  // KRUN_P_H