Humble sits in northeast Harris County about 20 miles north of downtown Houston along the US-59 and I-69 corridor, one of the closest suburbs to George Bush Intercontinental Airport at only 7 to 9 road miles. Read more about Tucson to Phoenix shuttle. Texas Shuttle runs private door-to-door service from any Humble address to IAH, downtown Houston, the Galleria, the Texas Medical Center, and Hobby Airport, 24 hours a day, 7 days a week, Get an instant quote. This guide covers mileage, airport choice, fares, and pickups.