7 Things to Know Before You Pick a Houston Airport
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Houston looks simple on a map. Then you search for flights and see two airport codes, IAH and HOU, with prices that look similar and very different drive times into town. Pick the wrong one and your trip starts with an extra stretch of highway you did not plan for.
Here is how Houston's airports actually work, what each one is good for, and how to choose before you book.
1. Houston has three airports in its system, but you will probably use two
The city's airport system, run by Houston Airports, includes George Bush Intercontinental Airport (IAH), William P. Hobby Airport (HOU) and Ellington Airport (EFD). Together they handled more than 62 million passengers in 2025.
Ellington is the odd one out. According to Houston Airports, it supports military, NASA and general aviation operations, and it is home to the Houston Spaceport, the 10th FAA licensed commercial spaceport in the country. It sits about 15 miles south of downtown. Unless you are visiting for space or aviation reasons, your airline ticket will say IAH or HOU.
The metro area also has smaller general aviation fields. Most visitors never touch them.
2. IAH is the big international gateway
IAH is about 23 miles north of downtown Houston. It served more than 48.7 million passengers in 2025, with 26 passenger airlines offering nonstop service to more than 189 destinations.
That range is the reason to choose it. If you are flying long haul, connecting to Latin America or Europe, or want the widest choice of airlines and schedules, IAH is usually where the options are.
The tradeoff is distance. Twenty three miles north of downtown means more time on the road, and more room for traffic to change your plans. Many travelers handle that stretch with a private car service from IAH so the drive is one less thing to manage after landing.
3. Hobby is smaller, closer and more useful than people expect
Hobby sits on the south side of the city, much nearer to downtown than IAH. It welcomed 13.9 million passengers in 2025, with seven passenger airlines flying nonstop to 81 destinations.
Southwest Airlines has ticketing counters there, and Hobby is not only for domestic trips. Southwest began international service from Hobby on March 7, 2015, with a first flight from Aruba, and Houston Airports confirms that international passengers arriving at Hobby go through Customs and Immigration.
A smaller airport also tends to mean shorter walks and fewer decisions. If your flight lands at Hobby and your hotel or meeting is south or southeast of downtown, it can save you a long drive. For that last leg, a chauffeured ride from Hobby Airport is one option, alongside taxis and rideshare.
4. Know the IAH Subway before you land
IAH is laid out as Terminals A, B, C and a combined D/E. The IAH Subway links them with a two mile underground loop, and it also connects to the Houston Airport Marriott. It runs before security, and a full loop takes about 19 minutes. The train opened in 1981 and carried more than 3.3 million passengers in 2025.
The practical tip: if you land in one terminal and need another, the train is the straightforward way to move between them.
5. International arrivals at IAH follow a set path
International flights at IAH arrive at gates in Terminal D or Terminal E. From there, you walk through secure corridors and sky bridges to Federal Inspection Services, where immigration and passport control take place.
The steps look like this:
Clear immigration with an officer, or at a Global Entry kiosk if you are a member.
Go down to level one and collect your bags.
Show your customs declaration form, or your Global Entry kiosk receipt, at the customs exit.
If your trip ends in Houston, exit into the Meeter/Greeter Lobby on the first floor of the Terminal E International Arrivals Hall. Ground transportation is reachable from there.
If you are connecting internationally, turn right after customs for the recheck counters. You will go through TSA screening again before entering your departure terminal.
Carrying food, plants or other perishables? A CBP Agriculture Specialist is on hand to check them.
6. Your ground transportation options
Houston Airports lists several ways to get in and out of each airport.
At IAH: rideshare apps, shuttles, rental cars and bus routes.
At Hobby: taxis and ride apps, shuttles and buses, rental cars, and limousines and sedans. There is also a cell phone lot for people picking you up, and Houston Airports promotes a METRO route called the 500 HOU Downtown Direct.
Each option makes sense for a different trip. Rideshare is simple for a solo traveler with one bag. Shuttles and buses suit lighter budgets. A pre booked private car is another route many travelers use when they want a set pickup and no app to manage after a long journey. Whichever you pick, plan your timing for Houston traffic, especially for the longer run between IAH and the city.
A parking note: if you are driving yourself, Houston Airports says booking parking ahead can earn a discount of up to 50%, and both IAH and Hobby have EV charging at their ecopark lots. Check lot details on the official Houston Airports website before you leave.
7. Match the airport to your trip
Use this as a quick filter before you book.
Your situation | Better fit | Why |
|---|---|---|
Long haul or international connection | IAH | 26 passenger airlines, nonstop to more than 189 destinations |
Short trip, staying south of downtown | Hobby | On the south side, closer to the city |
Staying north of the city, such as The Woodlands | IAH | Located on the north side |
Heading to Galveston | Hobby | South side of Houston, the same direction as the coast |
Visiting NASA or Houston Spaceport | Ellington | Military, NASA and general aviation field |
The best habit is simple: check the airport code on your ticket first, then check the map. IAH and HOU are on opposite sides of the city, so a mix up can cost you a lot of time.
Quick answers
How many airports are in Houston?
Houston Airports operates three: IAH, Hobby and Ellington. IAH and Hobby are the two you will use for airline travel.
Which Houston airport is closer to downtown?
Hobby. IAH is about 23 miles north of downtown, while Hobby is on the south side of the city and much nearer.
Does Hobby have international flights?
Yes. Southwest began international service there in 2015, and arriving international passengers go through Customs and Immigration at the airport.
Where do I clear customs at IAH?
International flights arrive in Terminal D or E, and you pass through Federal Inspection Services. If you are ending your trip in Houston, you exit into the first floor Meeter/Greeter Lobby of the Terminal E International Arrivals Hall.
Is there a train between terminals at IAH?
Yes. The IAH Subway is a two mile underground loop connecting Terminals A, B, C, D/E and the Houston Airport Marriott, before security.
Zayn M. writes travel and transportation guides covering Houston and Texas. Airport figures come from Houston Airports' official pages.