The honest answer to when you should fly Cancun to Buenos Aires is mostly about weather and demand at the far end. On three years of daily observations at the arrival airport, Apr, Sep-Nov gives the most comfortable combination of temperature and rainfall in Buenos Aires.
Averages below come from three full years of daily readings at Buenos Aires’s main airport, not from a seasonal generalisation. The warmest month is January (average high 30°C), the coolest is July (average low 6°C), and the wettest is March (170 mm).
| Month | Avg high | Avg low | Rainfall | Wet days | Cancun high |
|---|---|---|---|---|---|
| January | 30°C | 19°C | 50 mm | 7 | 27°C |
| February | 30°C | 20°C | 85 mm | 8 | 27°C |
| March | 26°C | 18°C | 170 mm | 13 | 29°C |
| April good | 22°C | 13°C | 108 mm | 10 | 30°C |
| May | 17°C | 9°C | 80 mm | 5 | 32°C |
| June | 15°C | 7°C | 42 mm | 5 | 31°C |
| July | 15°C | 6°C | 38 mm | 5 | 32°C |
| August | 16°C | 8°C | 119 mm | 7 | 32°C |
| September good | 19°C | 10°C | 57 mm | 4 | 31°C |
| October good | 23°C | 13°C | 70 mm | 8 | 30°C |
| November good | 25°C | 15°C | 125 mm | 9 | 29°C |
| December | 28°C | 17°C | 61 mm | 8 | 27°C |
Climate data: Open-Meteo reanalysis archive.
Buenos Aires runs 2 hours ahead of Cancun. Travelling east is the harder direction to adjust to, so if the trip is short, an early departure that lands in daylight is worth more than a marginally cheaper overnight.
We publish observed fares for this route when we have them, and say nothing when we do not — there is no estimate on this page. What holds regardless of the route:
Midweek departures are consistently cheaper than Friday and Sunday on most routes, because that is where demand sits rather than because of any pricing trick. Where we have observed fares for Cancun–Buenos Aires, the weekday breakdown appears further down this page; where we do not, we leave it out rather than estimate it.
Top-rated tours and experiences in Buenos Aires, ranked by traveller rating. Prices are per person and change with date and group size.
Nightly rates in Buenos Aires for a sample two-night stay for two adults from 29 Sep 2026, cheapest first. Rates move with your dates — check availability for a live quote.
| Airline | Code | Role |
|---|---|---|
| Aerolineas Argentinas | AR | Operates |
