diff --git a/app/models/train-routes/train-routes.ts b/app/models/train-routes/train-routes.ts
index 514bc986..4269856c 100644
--- a/app/models/train-routes/train-routes.ts
+++ b/app/models/train-routes/train-routes.ts
@@ -88,7 +88,8 @@ export const useTrainRoutesStore = create<TrainRoutesStore>((set, get) => ({
     }
     // We couldn't find routes for the requested date.
     set({ resultType: "not-found", status: "done" })
-    throw new Error("Not found")
+    // "No routes" is an expected UI state, not an exceptional failure.
+    return []
   },
 }))