London to Cancún (LHR–CUN) — Airlines, Schedules & Connections

British passport holders enter Mexico visa-free for up to 180 days. No fee, no advance application. Passport must be valid for the duration of the stay. On the aircraft or at the border, you receive a Forma Migratoria Multiple (FMM) card. The digital version is available at inm.gob.mx and can be completed before arrival.

Do not lose the FMM slip. You must return it when leaving Mexico. A replacement costs roughly MXN 600 (about $35) and involves a trip to an INM (immigration) office. Immigration officers sometimes stamp fewer than 180 days; if you need the full allowance, politely request it at the counter. No supporting documents are required beyond a valid passport.

Direct flights from London Heathrow to Mexico City (MEX) run about 11 hours 30 minutes on British Airways and Aeromexico. The Mexican peso (MXN) trades at roughly 17 MXN per $1. ATMs give better rates than exchange bureaus; avoid airport booths. No vaccination requirements for UK arrivals. Mexico City sits at 2,240m elevation, so altitude effects (headache, fatigue) hit some people on day one. Tap water is not drinkable; buy garrafones (20L jugs) or bottled water.

Heathrow Express runs from London Paddington to T5 and T2/T3 in 15–21 minutes (£37 single, cheaper booked online or via the Heathrow app). Elizabeth line (Crossrail) is a lower-cost alternative; Paddington to T5 in 34 minutes from £13.50 with an Oyster/contactless cap of £14.90. The Elizabeth line also serves central London stations including Bond Street, Farringdon, and Liverpool Street.London Underground Piccadilly line serves all terminals (T2/T3/T4/T5) from central London in 40–60 minutes (£6 with Oyster). Taxis (black cabs) from central London cost £55–90 depending on traffic. Coach services from Victoria Coach Station (National Express) cost from £10 booked in advance.

Authorised airport taxis operate from a voucher desk inside each terminal. Fares to the Hotel Zone run MXN 350–550 (USD $17–28) and to downtown Cancún MXN 200–300. Purchase tickets inside before exiting to avoid touts. ADO buses depart from outside Terminal 2 to downtown Cancún for MXN 102 and continue to Playa del Carmen and Tulum.The Tren Maya connects Terminal 4 to Playa del Carmen, Tulum, and the broader Yucatán Peninsula. Car rental desks are located in all terminals; driving is straightforward on Highway 307.

Tropical climate with two distinct seasons. Dry season (December–April) brings warm, sunny weather at 25–32°C with low humidity, the peak tourist season and most reliable flying conditions. Wet season (May–November) is hot, humid, and prone to heavy afternoon downpours; thunderstorms can cause short ground delays.

Hurricane season runs June through November, peaking in September–October. Major storms (e.g., Wilma 2005, Zeta 2020) can close the airport for 12–48 hours. Monitor forecasts carefully from August through October. September is statistically the highest-risk month.