You should arrive at Emirates Airlines LHR Terminal at least 3 hours before your flight. This gives you enough time for check-in, security, immigration, and reaching your gate without stress. Emirates check-in counters usually close 60 minutes before departure, so arriving early is important. If you're flying Business or First Class, you can also enjoy the Emirates Lounge at Emirates Airlines LHR Terminal before boarding. Early arrival ensures a smooth and hassle-free travel experience.