Terminal D

Non-United international flights all push from just 12 gates in D

Terminal D at IAH is the foreign-carrier side of the airport, handling most non-United international flights from its compact set of 12 gates. Think Air France, KLM, British Airways and other overseas airlines, then onward connections into United over in C or E. Layout is simple: one main concourse with a central cluster of gates and smaller pockets of seating off to the sides, which tend to stay quieter according to a few Google Maps reviewers.

Plan 1.5–2 hours if you’re connecting from D to C or E

Arrivals into D go through immigration and customs in this terminal, then funnel into the airside system toward Terminals C and E for most United connections. Skytrax reviewers talk about a “decent walk” and say first-timers should target 1.5–2 hours between an international arrival in D and a domestic departure in another terminal. Build the buffer. The walk feels long after a 9–10 hour flight from Europe.

Arrivals feel efficient, but the building itself looks dated

Multiple travelers landing in D call immigration “efficient,” noting they cleared formalities in around 20–30 minutes during off-peak times, even with several widebodies on the ground. The flip side: reviews on Skytrax and Yelp call parts of D “dated” and say it doesn’t match newer U.S. international concourses like those at LAX or JFK. Expect older finishes and lighting, but functional operations.

Bayou City Bar by gate D18 is the main sit-down spot

On the airside concourse, Bayou City Bar near gate D18 carries much of the food load with full bar service and Texas-style plates; think burgers, quesadillas, and local beer. Travelers on Yelp mention using it as a last proper meal before an overnight flight, with entrees often in the $15–$25 range. Seating spills toward the gate area, so it’s easy to keep an eye on boarding at D18.

Yia Yia Mary’s Greek Kitchen and Le Petit Bistro handle quicker bites

For something lighter, Yia Yia Mary’s Greek Kitchen in D has gyros, salads, and hummus plates that tend to move faster than full-service orders at Bayou City. Prices sit around $10–$18 depending on portion size. Le Petit Bistro fills the coffee-and-pastry gap, with espresso, sandwiches, and grab-and-go items handy if you’re dashing to a Schengen-bound Air France or KLM departure.

Centurion Lounge and three airline lounges cluster near D’s long-haul gates

Amex cardholders get the best deal here: the Centurion Lounge in Terminal D sits within easy walking distance of several European departures and opens early for morning banks, often around 5:30–6:00 a.m. Air France Lounge at gate D18, the KLM Crown Lounge, and the British Airways Lounge all serve their respective premium and elite passengers with showers, hot food, and quiet seating. If you have Priority Pass or SkyTeam/oneworld status, check your specific carrier access rules before arrival.

USO Lounge in D serves active military and families

The USO Lounge in Terminal D gives U.S. military members and their families a place to sit, grab a snack, and plug in devices between flights. Regulars mention using it on 3–4 hour holds between overnight international flights and afternoon domestic departures. Bring a valid military ID; it’s stricter than typical airline lounge rules, but once inside, basic drinks and snacks are free.

Duty Free Americas sits at the heart of D’s shopping run

Duty Free Americas anchors the shopping lineup in D, with liquor, perfume, and chocolates often priced better than downtown Houston, especially on 1-liter spirits. Around it, you’ll see Spanish Isles for regional gifts, Desigual for European-style clothing, and Montblanc for pens and small leather goods. Chanel Fragrance & Beauty and MAC Cosmetics near mid-concourse stock full product lines, so last-minute 50 ml perfumes or lipsticks are easy grabs before boarding.

Be Relax and Benefit Cosmetics cover spa and quick-fix grooming

Be Relax near gate D1 offers chair massages and short treatments aimed at 15–30 minute slots before boarding; prices climb quickly, so check the board before you sit down. Benefit Cosmetics at gate D7 leans into brows and fast makeup refreshes, and reviews note quick 10–15 minute services if you’re trying to look more awake before a red-eye to Europe or South America.

Power and quiet spots: head for the windows away from D’s core

Several frequent flyers call out that Terminal D has more power outlets than older IAH concourses, especially along the window seating near outlying gates. If the main central area feels crowded, walk 2–3 gates away from the big long-haul departures and you’ll usually find open seats with plugs. One last tip: if you land hungry in D with a long layover, clear formalities, then head straight to C or E for better food depth, not back to D’s limited late-night options.