diff --git a/src/BusProNet/Model/Travel.php b/src/BusProNet/Model/Travel.php
index f793f06..a9f632a 100644
--- a/src/BusProNet/Model/Travel.php
+++ b/src/BusProNet/Model/Travel.php
@@ -74,18 +74,30 @@ class Travel
     {
         $group = (array) $group;
 
-        return array_filter($this->additionalServices, function (Service $service) use ($group, $availableOnly) {
+        $services = array_filter($this->additionalServices, function (Service $service) use ($group, $availableOnly) {
             return in_array($service->subType, $group) && (false === $availableOnly || $service->available > 0);
         });
+
+        usort($services, function (Service $a, Service $b) {
+            return $a->label <=> $b->label;
+        });
+
+        return $services;
     }
 
     public function getTransportationServicesByDirection(string $direction, bool $availableOnly = true): array
     {
-        return array_filter($this->transportationServices, function (Service $service) use ($direction, $availableOnly) {
+        $services = array_filter($this->transportationServices, function (Service $service) use ($direction, $availableOnly) {
             return $direction === $service->direction
                 && $service->price >= 0
                 && (false === $availableOnly || $service->available > 0);
         });
+
+        usort($services, function (Service $a, Service $b) {
+            return $a->subType <=> $b->subType;
+        });
+
+        return $services;
     }
 
     public function getIncludedServices(): array