Houston to Cancun Flights (IAH to CUN): Nonstops, Flight Time and Arrival Guide

Nonstops from Houston to Cancun run all day

Houston to Cancun is one of United's busiest leisure routes, and nonstops are the norm. As of recent schedules United flies George Bush Intercontinental to Cancun several times a day, with more frequencies around spring break, summer and the winter holidays.

If you live on the south side of Houston, also check Houston Hobby (HOU): Southwest flies from Hobby to Cancun, and the drive can be shorter. The rest of this guide is about Intercontinental.

One-stop itineraries via Dallas, Atlanta or Mexico City show up in searches, but on a route this short there is rarely a reason to take one unless the nonstops are sold out.

Flight time and distance

The great-circle distance from IAH to CUN is about 810 miles (1,300 km), straight across the Gulf of Mexico. The flight typically takes 2 hours to 2 hours 30 minutes southbound and a similar time northbound, with small differences from the wind. It is short enough that most travellers fly out in the morning and are at the beach by lunchtime.

United's schedule spreads departures through the day, with the earliest flights leaving Houston in the morning and the last ones in the afternoon or evening. Returning flights from Cancun follow a similar pattern, with afternoon departures the most popular, since resort checkout is usually late morning.

Leaving from George Bush Intercontinental

United's international departures from IAH use Terminal E and parts of Terminal C, although flights to Mexico can be assigned to either. Terminals A to E are connected by the Skyway train airside and the Subway walkway landside. Check the departure screens or the airline app on the morning you fly.

For an international flight, arrive at least two to two and a half hours before departure; Cancun flights on Saturday mornings in spring break and summer are among the busiest at IAH. The airport is about 35 km north of downtown Houston, so allow 30 to 45 minutes by car outside rush hour, and more in the morning peak on I-45 or the Hardy Toll Road. Terminal parking and the Ecopark lots with shuttles both fill on holiday weekends.

Arriving in Cancun and getting to your hotel

Cancun International has four passenger terminals. Most US airlines, including United, use Terminal 3 or Terminal 4, and assignments change, so check the airline's notice before you return to the airport. After immigration and customs, where you press a button that randomly selects bags for inspection, you walk through a hall of timeshare and transport sellers. Keep walking until you are outside, where pre-booked drivers wait with signs.

The airport is about 15 km from the Hotel Zone:

• Pre-booked shared or private shuttle: the standard choice. Book it before you fly; 20 to 30 minutes to the Hotel Zone, about 45 minutes to Puerto Morelos and around an hour to Playa del Carmen.
• ADO bus: comfortable coaches from Terminals 2, 3 and 4 to downtown Cancun and to Playa del Carmen and Tulum. Cheap and reliable, though not door-to-door.
• Airport taxis: available outside the terminals at fixed but high fares. City taxis cannot pick up at the airport.
• Rental car: easy if you are heading to Tulum or the cenotes; the main highway south is good.

Many all-inclusive resorts include transfers or offer them at booking, so check that before arranging your own.

When to fly and when to book

The dry season from December to April is the peak: warm, sunny days, low humidity and the highest fares from Houston, especially around Christmas, New Year and spring break in March. Easter week is busy with Mexican travellers as well. Summer is hot and humid but popular with families, so June to August fares stay firm.

Hurricane season runs from June to November, with the highest risk from August to October. Storms do not strike every year, but when one approaches flights are cancelled and resorts may evacuate, so travel insurance matters in those months. Sargassum seaweed can wash onto Caribbean beaches in spring and summer; the calmer north-facing beaches of the Hotel Zone, such as Playa Langosta, are usually less affected than the long east-facing stretch. Late April, May and November often bring good weather and softer fares. Book two to three months ahead for the winter peak and spring break; three to six weeks is often enough at other times.

Entry requirements and documents

As of recent rules, US passport holders can visit Mexico as tourists without a visa, and the officer sets the length of your stay on arrival. A valid passport book is required for air travel; a passport card is not accepted for flights. Cancun uses a digital entry record or a stamp instead of the old paper tourist card; keep any record you receive. The state of Quintana Roo charges a visitor fee known as Visitax, paid online before you leave; check the official state site for whether it applies and how to pay. Rules change, so confirm with the Mexican consulate or the National Migration Institute before you travel.

On the way home, you clear US immigration and customs at IAH, where Global Entry or Mobile Passport Control shortens the queue considerably.

Time zones

Quintana Roo runs on Eastern Standard Time all year and does not observe daylight saving. In summer, while Houston is on Central Daylight Time, Cancun and Houston show the same clock time. In winter, Cancun is one hour ahead of Houston. There is no jet lag to speak of, but the shift catches people out on return day: check your departure time in Cancun local time.

What travellers on this route get wrong

The most common mistake is stopping to talk to the sellers in the arrivals hall, who pose as transport desks and sell timeshare presentations. The second is booking a hurricane-season trip without insurance that covers weather cancellations. The third is miscounting the time difference in winter and arriving at the airport an hour late for the return flight.