The 10kg Check-in Bag costs between €/£10 and €/£25, depending on the route and travel dates selected.  You can add the 10kg Check-in Bag at the time of booking, during check-in, or in your trip extras. Sign into your Active trip and scroll down to your trip extras. Click “Add to Trip” and follow the steps. You can add the bag up to 40 minutes before the scheduled flight departure time on the Ryanair app.