diff --git a/AK/FlyString.cpp b/AK/FlyString.cpp
index 3fa7c3e9802..aa870ebba42 100644
--- a/AK/FlyString.cpp
+++ b/AK/FlyString.cpp
@@ -183,6 +183,11 @@ unsigned Traits<FlyString>::hash(FlyString const& fly_string)
     return fly_string.hash();
 }
 
+int FlyString::operator<=>(FlyString const& other) const
+{
+    return bytes_as_string_view().compare(other.bytes_as_string_view());
+}
+
 ErrorOr<void> Formatter<FlyString>::format(FormatBuilder& builder, FlyString const& fly_string)
 {
     return Formatter<StringView>::format(builder, fly_string.bytes_as_string_view());
diff --git a/AK/FlyString.h b/AK/FlyString.h
index 672c6439ca0..7503913f906 100644
--- a/AK/FlyString.h
+++ b/AK/FlyString.h
@@ -50,6 +50,8 @@ public:
     [[nodiscard]] bool operator==(StringView) const;
     [[nodiscard]] bool operator==(char const*) const;
 
+    [[nodiscard]] int operator<=>(FlyString const& other) const;
+
     static void did_destroy_fly_string_data(Badge<Detail::StringData>, StringView);
     [[nodiscard]] uintptr_t data(Badge<String>) const;