Seoul to Mexico City (ICN–MEX) — Airlines, Schedules & Connections

South Korean passport holders enter Mexico visa-free for up to 180 days for tourism or business. No fee, no advance application. Passport must be valid for the duration of stay. At immigration, you receive a Forma Migratoria Multiple (FMM) entry card, which can be completed online at inm.gob.mx before arrival or filled out on paper at the airport. The immigration officer determines how many days you get, up to 180. Ask for 180 if that is what you need.

No supporting documents are formally required, but having a return ticket, hotel booking, and proof of funds speeds up the process. Losing your FMM card before departure results in a fine of about MXN 600 (roughly $35) payable at a bank before you can check in for your flight. Take a photo of it. For stays beyond 180 days, you must leave and re-enter or apply for a temporary resident visa at a Mexican Consulate.

No direct flights connect South Korea to Mexico. Route through Los Angeles (LAX), Dallas (DFW), or San Francisco (SFO) to Mexico City (MEX) or Cancun (CUN), with total travel times of 18 to 24 hours. A US transit visa or ESTA is required for connections through the US. Alternatively, connect through Tokyo Narita to MEX on Aeromexico (no US transit needed). Mexico uses the Mexican peso (MXN), trading at roughly 17 MXN per $1. No mandatory vaccinations. Uber works in most Mexican cities and is safer than street taxis.

AREX (Airport Railroad Express) runs two services from Seoul Station: the Direct Train (43 min, ₩11,000, reserved seats) and the All-Stop train (66 min, ₩4,550, unreserved). Both trains serve T1 first, then T2; confirm which terminal your airline uses before boarding.Limousine buses depart from major Seoul neighborhoods and hotels (₩16,000–18,000, 60–90 min depending on traffic). KAL and LIMOUSINE services are reliable. Taxis from central Seoul cost ₩65,000–80,000 and take 60–90 minutes. Deluxe (black) taxis are pricier but English-speaking drivers are more common.

Use only authorized airport taxis (purchase vouchers at official booths inside arrivals; do not take street taxis outside). Rates are zone-based: Centro/Zócalo MXN$180–250, Polanco MXN$250–320, Santa Fe MXN$350–450. Uber is not permitted for airport pickup at T1 (walk to street level at T2 to use Uber).Metrobús Line 4 to Buenavista (Metro hub) takes 30–40 min (MXN$12); a solid budget option. Metro Line 5 serves Terminal Aérea (T1). ADO buses depart from T1 to Puebla, Querétaro, and other cities. A second airport (AIFA, NLU) exists northeast of the city; confirm which airport your flight uses.

High-altitude subtropical climate at 2,240m. Temperatures are mild year-round (7–22°C) with little seasonal variation, no extreme heat or cold. The rainy season (May–October) brings daily afternoon thunderstorms, typically between 3–7pm, which frequently cause delays and can be intense. Hail is possible.

Dry season (November–April) offers the most reliable flying conditions. The airport's elevation means aircraft have reduced performance on hot days. Dense morning smog is common in winter inversions and occasionally reduces visibility. Earthquake risk (significant for Mexico City) has no direct flight impact but is worth knowing.