Houston Airport (IAH): terminals, flights

George Bush Intercontinental Airport (IATA: IAH, ICAO: KIAH) is a network point for Houston, USA. Our catalogue shows 0 departing routes and 5 arriving, with the airlines, frequencies and lowest peso (MXN) fares listed below.

Airport facts

IAH carries 5 routes and 4 airlines in our catalogue, totalling 92 weekly departures. George Bush Intercontinental Airport (ICAO KIAH) serves Houston, the United States, in the America/Chicago zone (UTC−5 in July). Its coordinates (29.984435, -95.341442) are the basis of every distance on this site.

• IATA: IAH
• ICAO: KIAH
• City: Houston
• Country: USA
• Time zone: America/Chicago
• Coordinates: 29.984435, -95.341442
• Airlines at the airport: 4

Time difference against Mexico City. In July, Houston runs 1 h ahead of the Mexican capital (UTC−5 versus UTC−6). In January the airport operates on UTC−6, so the gap is not constant across the year: daylight saving shifts it. This is the calculation that decides whether a pre-booked ground connection still works.

Coordinates, and why we publish them. 29.984435, -95.341442 is the position from which every great-circle distance on this site is computed, including the ones that set the EU261 compensation band. It is not the distance the aircraft flies — that follows airways and diversions — but the geodesic measure the regulations use. Publishing it lets anyone recompute the figures on these pages.

Airlines at IAH

4 catalogued airlines operate routes to or from IAH: 2 full-service and 2 low-cost, with checked allowance from 0 to 25 kg. Alliances present: SkyTeam, Star Alliance. They cover 5 catalogued routes and 92 weekly departures. The table below lists each operator with its type, alliance and checked allowance.

Carriers in our catalogue operating routes to or from this airport, with type, alliance and economy baggage allowance:

What US DOT does not cover. The United States has no federal delay compensation: the Department of Transportation regulates refunds — your money back when the airline cancels or significantly changes the flight and you decline the alternative — but it does not require a payout for the hours you lost, the way EU261 does. The single federal exception is involuntary denied boarding from oversales, priced under 14 CFR Part 250; that is a different mechanism from delay and is not triggered by a late departure.

Routes to Houston (IAH)

Our catalogue lists 5 routes into IAH, totalling 92 weekly departures and spanning 662 to 1,322 km. The busiest is MEX-IAH at ~42 flights a week; 2 of them carry a cached fare, spread across 1 audience profiles. Every row in this section comes from that same corridor catalogue, not from a live search.

What traffic IAH moves. By audience profile, the routes catalogued here split as: Mexico-US paisano corridor (5). That mix explains the airport’s seasonality: family corridors spike in December and Holy Week, leisure ones follow the holiday calendar, and regional ones stay flatter across the year.

Why some rows have no fare. Of the 5 routes listed, 2 returned a price on the collector’s last pass and the rest show a dash. A dash means the automated query got no result for that pair — not that the route is suspended or expensive. For those pairs the reference price comes from the live search, which queries current inventory.

Connection tips

IAH concentrates 92 catalogued weekly departures across 4 airlines, in the America/Chicago zone. That density is what decides how much slack to leave on a connection: the more of its own services the airline runs here, the more same-day rebooking options exist.

George Bush Intercontinental Airport runs on the America/Chicago time zone; factor the offset from your origin city when planning connections and transfers. The busiest route at IAH is MEX-IAH (~42 flights a week). The lowest fare detected at this airport is $2,677 MXN on the MEX-IAH route. Book 4–8 weeks ahead for the busiest routes to/from Houston; fares climb in December, Holy Week and summer. Each route guide above shows month-by-month seasonality and the lowest peso fare. That window is a general Mexican-market rule of thumb, not a measurement of this route: our series records observed prices, not the lead time at which each ticket was bought.

The cheap connection that loses the checked bag. Two separate tickets are not one itinerary: there is no interline agreement, the bag is not checked through to the final destination, and if the first flight lands late the second airline owes you nothing — it sold a different flight. The apparent saving evaporates the moment you buy a same-day replacement. On a single ticket, rebooking and the bag transfer are the carrier’s problem, not yours.

A US layover needs a visa too. The United States has no visa-free international transit: with a Mexican passport you need a B1/B2 or C-1 visa merely to change planes in Houston, Dallas, Miami or Atlanta, even without leaving the terminal. Every US connection forces you through immigration, bag reclaim, customs and re-check. A US-routed itinerary that looks cheaper can therefore be unusable if your visa has expired or is still in process.

Other airports in USA

12 further the United States airports appear in our catalogue besides IAH, with 45 routes between them. The best-connected is Dallas (DFW) with 10 routes, and the nearest sits ~38 km great-circle from IAH. The 12 distances in this section are measured from each airport’s own coordinates.

Other airports in the same country in our catalogue, with the number of catalogued routes — useful if you need an alternative gateway:

Great-circle distance is not the transfer. The figures in the table are geodesic, computed from each airport’s coordinates; the real journey depends on whether road, rail or a domestic flight exists, and on what they cost. An airport 300 km away can be more accessible than one at 120 km if the first has a direct motorway and the second does not. Use them to rule out, not to plan.

FAQ

The 9 questions on this record are answered from catalogue figures for IAH: routes and weekly frequencies, minimum fares observed by the collector, checked-baggage allowances and the rights regime that applies on each leg. No answer adds data that is not in those sources.

What are the IATA and ICAO codes for Houston airport? The IATA code is IAH and the ICAO code is KIAH. George Bush Intercontinental Airport serves Houston, USA.

Which airlines operate at IAH? Airlines on our catalogued routes at IAH: Aeromexico, United Airlines, Volaris, Southwest Airlines.

How many routes are there from Houston (IAH)? Our catalogue lists 0 departing routes and 5 arriving at IAH — see the tables above.

What time zone is IAH in? IAH operates in the America/Chicago time zone.

How many weekly departures does IAH have in this catalogue? Across the catalogued routes touching IAH we count 92 weekly departures over 4 airlines and 5 routes. That is the coverage relevant to Mexican travellers, not the airport’s full directory.

What is the time difference between Houston and Mexico City? In July, Houston runs 1 h ahead of Mexico City (UTC−5 versus UTC−6). The gap shifts with daylight saving, so recompute it for your exact date before booking transfers.

What is the longest catalogued route at IAH? Catalogued routes at IAH span 662 to 1,322 km great-circle, computed from each airport’s coordinates. That distance drives aircraft type and the applicable compensation band on European sectors.

What is the lowest fare detected at IAH? $2,677 MXN on MEX-IAH, per the collector’s last pass across 2 routes with data at this airport. It is an observed one-way minimum, not a guaranteed price or a bookable offer.

Which airlines are based at IAH? United Airlines run IAH as a base. An airline based here keeps aircraft and crews overnight, so it has more of its own services to rebook a disrupted passenger onto the same day.

Related

• USA airports

Published by FlightsMX Editorial Team. Last verified: May 2026.