San Antonio to Mexico City Flights (SAT to MEX): Nonstop Airlines, Terminals and Entry Rules

Three airlines fly San Antonio to Mexico City nonstop

As of November 2026, San Antonio International Airport lists three airlines with nonstop service to Mexico City (MEX): Aeromexico, Viva Aerobus and Volaris. The airport shows the route as an active destination rather than a seasonal one, so a winter, spring or summer trip does not depend on a connection. Departure times and the number of flights on a given day change with each schedule period, so check the current timetable with the airline before you build plans around a particular departure.

The three carriers sell different products. Aeromexico is Mexico's full-service flag carrier. Viva Aerobus and Volaris are low-cost airlines that sell a basic seat and charge separately for bags, seat choice and changes. A low headline fare on one of them can end up close to an Aeromexico fare once you add a checked bag, so compare the total for the trip you actually plan to take.

Connecting options

With three nonstop carriers on the route, a connection rarely makes sense for a trip from San Antonio to the capital. One-stop itineraries do show up in searches, through US hubs or other Mexican cities, and they can take several hours longer door to door than a flight of a little over two hours. Book one only if the nonstops are sold out or the timing of a connection fits a meeting or an onward flight better.

If Mexico City is not your final stop, look at San Antonio's other nonstops to Mexico before routing through the capital. The airport also lists nonstop flights to Guadalajara, Monterrey, Leon-Guanajuato, Queretaro, San Luis Potosi and Torreon, and seasonal service to Cancun. Flying straight to one of those cities can save you a transfer at one of the busiest airports in Latin America.

Flight time and time zones

The two airports are roughly 690 miles apart, and a nonstop flight takes around 2 hours and 15 minutes. The return trip is similar. Allow for taxi time at Mexico City, where the runways are often congested at peak hours.

Mexico ended daylight saving time nationwide in October 2022, keeping it only in municipalities on the northern border, so Mexico City now stays on Central Standard Time all year. San Antonio still moves its clocks. From early November to the second Sunday of March the two cities show the same time; while US daylight saving time is in effect, San Antonio is one hour ahead of Mexico City. Departure and arrival times on your booking are always shown in each airport's local time.

Airports and terminals

San Antonio (SAT)

All three airlines on this route check in at Terminal A, according to the airport's airline directory. Volaris advises arriving two and a half to three hours before departure and checking in online. Leave the extra time: document checks for Mexico happen at the counter, and a missing or damaged passport is found there, not at the gate.

Mexico City (MEX)

Mexico City's Benito Juarez International Airport has two terminals that are far apart. On the airport's flight board, Aeromexico flights are listed at Terminal 2, while Viva Aerobus and Volaris flights are listed at Terminal 1. The Aerotren people mover links the two terminals for passengers with a boarding pass, but it has had several maintenance closures during 2026; since August 1, 2026 a Metrobus inter-terminal service also runs between Terminal 1 and Terminal 2 inside the airport, so allow extra time if you have to change terminals. The airport is in the middle of renovation work, so some pick-up points and parking areas have moved; follow the signs on arrival and confirm your terminal in your airline's app on the day.

Entry rules for US citizens

US citizens do not need a visa to visit Mexico for tourism or business stays of up to 180 days without paid work in the country. Bring a valid passport book. Mexico's consular guidance says the passport must be valid for the length of your stay, and immigration officers can ask for supporting documents such as a hotel reservation or a return ticket, so keep those handy.

Arriving by air, you no longer fill in a paper tourist card. Mexico's National Migration Institute (INM) replaced it with the digital Multiple Migration Form (FMMd). At the immigration desk an officer stamps your passport and writes the date by which you must leave, based on the number of days granted; that number is the officer's decision, not an automatic 180. You can then download the FMMd once, during your authorized stay, by scanning the QR code in the immigration area or through the INM services portal. Mexico City's Terminals 1 and 2 also have automated immigration kiosks for adult tourists with electronic passports who meet the conditions for using them. Keep the FMMd available until you leave Mexico.

Getting into Mexico City

The airport sits about 5 miles from downtown, but traffic decides how long the ride takes. Your main choices:

• Authorized taxis: the airport publishes a list of authorized taxi companies. Use one of these rather than accepting a ride offered by someone in the arrivals hall.
• Metrobus Line 4: the airport route links Terminals 1 and 2 with the Centro Historico, the TAPO bus terminal and the Amajac stop on Paseo de la Reforma. As of the airport's February 2026 notice, the renovation moved its stops to Gate 7 in Terminal 1 and Gate 4 in Terminal 2; check the signs, as stops can move again. It runs from early morning until midnight. At Terminal 2, check the sign on the bus: not every Metrobus there goes downtown.
• Metro: Terminal Aerea station on Line 5 sits beside Terminal 1. It is crowded at rush hour and awkward with large bags.
• Ride apps and hotel transfers: agree the pick-up point in advance, because the curb areas at both terminals are long and busy.

Best months to go

Mexico City's official tourism site recommends spring (March to May) and autumn (September to November) as the times to avoid the worst cold and rain. The rainy season runs through the summer months; storms usually last no more than a couple of hours but can flood streets and slow traffic. May tends to be the hottest month. From December to February, nights and early mornings can drop close to freezing, so pack a warm layer even on a winter getaway.

Some dates bring crowds as well as atmosphere. Day of the Dead events now run from mid-October to mid-November, Independence Day falls on September 15 and 16, and December 12 brings pilgrimages to the Basilica of Guadalupe. Jacaranda trees bloom purple from February to early April. During Holy Week the city slows down and traffic eases.

Baggage and fare families

Read what your fare includes before comparing airlines:

• Volaris sells Zero, Flex and Plus fares. Zero covers only a personal item that fits under the seat; carry-on and checked bags cost extra. Flex lets you pick one benefit such as a carry-on, a checked bag or a standard seat. Plus includes a carry-on, a checked bag and unlimited changes.
• Viva Aerobus allows every passenger one free personal item on international flights, such as a purse, briefcase or laptop bag. A carry-on or checked bag depends on the fare bundle or an add-on.
• Aeromexico sells branded fares including Basic, Classic and AM Plus. On Basic, checked bags and seat selection cost extra; AM Plus includes the first checked bag. Conditions vary by route, so read the international terms when you book.

If you know you will check a bag, add it when you buy the ticket rather than at the airport, and compare the bag-inclusive total across all three airlines.

Booking tips

• Compare all three nonstop airlines with bags included. The cheapest seat on screen is not always the cheapest trip.
• Note which Mexico City terminal your airline uses before you book a hotel transfer or ask someone to pick you up.
• Avoid tight same-day onward connections at Mexico City. Arrival delays and the distance between terminals can eat a short layover.
• Book early for Day of the Dead, Christmas and Holy Week, when demand rises on both sides of the border.
• Check the passport expiry date of every traveller before paying, and make sure each name on the booking matches the passport exactly.

Other Way4Fly guides to the capital: Austin to Mexico City flights, Kansas City to Mexico City flights, Nashville to Mexico City flights and every route on our flights to Mexico City page.