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Mexico is United Airlines' number-one international market by number of destinations — the airline serves approximately 24 Mexican cities from its US hubs, more than any other country in its worldwide network. This page covers all Mexican phone numbers (including the 24/7 reservations line), seven city ticket offices with WhatsApp contacts, the full list of Mexican destinations, and FAQs for passengers in Mexico.
United Airlines Mexico Phone Numbers
Mexico is the only country where United Airlines' reservations line is available 24 hours a day, 7 days a week on a local toll-free number — reflecting the massive volume of traffic between the two countries.
| Reservations (toll-free) | 55-5283-5500 |
| Alternate toll-free | 55-8877-6778 |
| Hours | 24 hours a day, 7 days a week |
| Group reservations | 55-5283-5555 |
| Group hours | Monday – Friday, 9:00 a.m. – 6:00 p.m. |
Note: Both reservations numbers are toll-free within Mexico. The group reservations line handles bookings for 10 or more passengers travelling together. Service is available in Spanish and English.
United Airlines City Ticket Offices in Mexico
Mexico has the largest network of physical United Airlines ticket offices outside the United States — seven CTOs across the country, all with WhatsApp support for remote assistance. These offices handle ticket purchases, changes, upgrades, and MileagePlus enquiries.
Mexico City — Paseo de la Reforma (Main Office)
| Address | Av. Paseo de la Reforma 250, Planta Baja, Col. Juárez 06600 |
| [email protected] | |
| Hours | Mon–Sat 9:00 a.m.–6:00 p.m.; Sun closed |
| +52 1 55 5279-7671 |
Monterrey
| Address | Centro Comercial Galerías, Local 613, Insurgentes 2500, Col. Vista Hermosa, CP 64230 |
| Phone | 81-8333-3024 |
| Hours | Mon–Sat 11:00 a.m.–7:00 p.m.; Sun closed |
| +52 1 81 8333-3024 |
Guadalajara
| Address | Av. Moctezuma 3515, Local 11-12 Zona F, Astral Plaza, Col. Ciudad del Sol, Zapopan, Jalisco, CP 45050 |
| [email protected] | |
| Hours | Mon–Fri 9:30 a.m.–5:30 p.m.; Sat–Sun closed |
| +52 1 33 1986-5088 |
León, Aguascalientes, Querétaro & San Luis Potosí
United also operates ticket offices in four additional cities in Mexico's Bajío region. All offices are open Monday–Friday 9:30 a.m.–5:30 p.m. and offer WhatsApp support:
| City | Phone | ||
| León | 477-718-5254 | [email protected] | +52 1 477 718-5254 |
| Aguascalientes | 449-996-1100 | [email protected] | +52 1 449 996-1100 |
| Querétaro | 442-220-5960 | [email protected] | +52 1 442 220-5960 |
| San Luis Potosí | 444-817-8617 | [email protected] | +52 1 444 817-8617 |
United Airlines Mexican Destinations
United Airlines and United Express serve approximately 24 destinations across Mexico from multiple US hubs — primarily Houston (IAH), Newark (EWR), Denver (DEN), Chicago (ORD), Los Angeles (LAX), San Francisco (SFO), and Washington Dulles (IAD). This makes Mexico United's largest international market by number of destinations.
| City | Code | Primary US hubs |
| Cancún | CUN | IAH, EWR, DEN, SFO, IAD, LAX, ORD, CLE |
| Mexico City | MEX | IAH, EWR, SFO, IAD, ORD, DEN |
| Los Cabos (San José del Cabo) | SJD | IAH, EWR, DEN, LAX, SFO, ORD |
| Puerto Vallarta | PVR | IAH, DEN, LAX, SFO, ORD |
| Guadalajara | GDL | IAH, EWR, DEN, LAX, SFO, ORD |
| Monterrey | MTY | IAH, DEN |
| Cozumel | CZM | IAH, EWR, DEN |
Additional Mexican destinations served by United include: Acapulco (ACA), Aguascalientes (AGU), Ixtapa/Zihuatanejo (ZIH), León (BJX), Manzanillo (ZLO), Mazatlán (MZT), Mérida (MID), Morelia (MLM), Oaxaca (OAX), Puebla (PBC), Puerto Escondido (PXM), Querétaro (QRO), San Luis Potosí (SLP), Tampico (TAM), Tepic (TPQ), Tulum (TQO), and Veracruz (VER). Availability varies by season and US hub. Houston (IAH) serves the most Mexican destinations due to its geographic proximity and United's 72% market share at the airport.
Other Ways to Contact United Airlines from Mexico
| Customer care form | united.com/en/us/customercare |
| Mexican website (Spanish) | united.com/es/mx |
| X (formerly Twitter) | @united |
| Spanish-language US line | 1-800-426-5561 (24/7, US toll-free) |
| Mailing address (HQ) | United Airlines, Inc. 233 S. Wacker Drive Chicago, IL 60606, United States |
Frequently Asked Questions — United Airlines Mexico
Is the reservations number really available 24/7?
Yes. Both Mexico toll-free numbers (55-5283-5500 and 55-8877-6778) are available 24 hours a day, 7 days a week, including holidays. Mexico is one of the few countries where United offers round-the-clock local phone support. The group reservations line (55-5283-5555) operates on limited hours: Monday–Friday 9:00 a.m.–6:00 p.m.
Is Cancún the busiest United Airlines route from Mexico?
Yes. Houston–Cancún is United's busiest Mexican route by far, with up to seven daily flights operating like a shuttle service. United also flies to Cancún from Newark, Denver, San Francisco, Washington Dulles, Los Angeles, Chicago, and Cleveland — making it the most-connected Mexican city in United's network. Cancún appears three times in United's top five busiest Mexican routes by seat capacity.
Does United Airlines partner with Aeromexico?
No. United Airlines (Star Alliance) and Aeromexico (SkyTeam) belong to competing airline alliances and do not have a codeshare or joint venture agreement. They compete head-to-head on many US–Mexico routes, particularly between Houston and Mexico City. However, passengers can earn MileagePlus miles on other Star Alliance carriers, and United codeshares with select partners for connections beyond Mexico into Central and South America.
Can I pay in Mexican pesos (MXN)?
Yes. When booking on united.com/es/mx (the Mexican Spanish version of the website), fares are displayed in MXN and you can pay with Mexican credit or debit cards. You can also purchase tickets in person at any of the seven city ticket offices across Mexico.
Which US hub has the most Mexico flights?
Houston George Bush Intercontinental (IAH) is United's primary gateway to Mexico, serving the most Mexican destinations and the highest number of daily flights. This is due to Houston's geographic proximity (2–3 hour flights to most Mexican cities) and United's dominant 72% market share at IAH. Newark (EWR) is the second-largest gateway, particularly for East Coast passengers heading to Cancún and Mexico City.
Can I visit the ticket offices without an appointment?
Yes. All seven United ticket offices in Mexico accept walk-in visitors during business hours without an appointment. You can also contact any office in advance via WhatsApp or email to arrange a specific request. Note that each office has slightly different hours — the Mexico City Reforma office is open on Saturdays, while most Bajío offices (León, Aguascalientes, Querétaro, San Luis Potosí) are closed on weekends.
Are there specific holiday closures for the ticket offices?
Yes. Mexican ticket offices observe national holidays and some have additional local closure days. The 24/7 toll-free reservations line (55-5283-5500) remains available on all holidays. For specific office closures, contact the relevant office via WhatsApp before visiting on or near a public holiday.
Related Pages
- United Airlines Corporate Office Headquarters — Address, Email, Phone Number
- United Airlines UK Contact Number & Heathrow Terminal Info
- United Airlines Japan Contact, Narita & Haneda Info
- United Airlines Germany Contact, Frankfurt & Munich Info
- United Airlines Australia Contact & Routes Info
- United Airlines India Contact, Delhi Route & Gurgaon Office
- United Airlines Brazil Contact, Ticket Offices & Routes
- United Airlines Official International Contact Page (united.com)
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