For instance, you might connect in Heathrow on your way to Paris, or in Brussels on your way home from Amsterdam. If you do have a connection in one of these destinations, your flight might also be delayed, cancelled, or otherwise impacted. If your flight is expected to continue as scheduled, you should check in at home directly with your airline on your personal device. That's because the cyberattack affected software at the airports, but not that of individual airlines. At Heathrow in London, which is already among the most stressful airports in Europe, travelers might have to wait in longer queues due to delayed check-in and boarding processes.