United Airlines IAH Terminal +1-888-839-0502 In case you're asking what terminal is united at george bush airport? Terminal C at IAH is indeed quite reliable, based on my several flights with United Airlines. It's spotless, well-stocked with food options for a quick snack or cup of coffee before your trip. The security process also proceeds rather swiftly, particularly with TSA PreCheck. All in all, traveling through United's terminal at IAH is easy. It's undoubtedly one of the best setups available. for more: https://www.terminalfind.com/united-airlines/united-airlines-iah-terminal-george-bush-intercontinental-airport/