Route brief · MEX → EZE
Mexico City → Buenos Aires
$617
−17% vs typical
seasonal median $740 · difference $123
Sep 28 – Oct 5 · 7 nights
Copa Airlines1 stop
- Usual monthly lows
- $650–$755
- Board rank
- Stronger than 45%
- Route sample
- 5 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefEZEBuenos AiresEuropean bones, Latin hours — and a peso that has made this one of the cheapest big cities to spend a week in.Best windowOct–Dec · Mar–MayAirportsEzeiza (EZE) · Aeroparque (AEP)All routes into Buenos AiresWhen this route gets cheap.
Cached-fare history: across 5 months, Sep is the cheapest for MEX → EZE. Best time to be there: Oct–Dec · Mar–May.
Fares bottom out in September around $617 and peak in December near $902 — a $285 spread across the 5 months we track. The cheapest itinerary we are tracking makes one stop and takes about 11 hours outbound, on a 7-night trip — ticketed under Copa Airlines, which on a connecting fare need not operate every leg. At $617 for 7,399 km each way, that works out to about $42 per 1,000 km flown. That is about the $44 typical of long-haul fares here. Across the 9 departure cities we track at a similar distance from Buenos Aires, this fare ranks 2nd — 33% above the $465 from Miami. It is also the cheapest of the 16 routes of similar length we watch out of Mexico City.
The 7 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 9% higher than when tracking began on Aug 8 — $669 then versus $727 now, across 4 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $641, on Sep 10.
- Mon, Sep 7$668
- Thu, Sep 10$641
- Fri, Sep 11$740
- Sat, Sep 12$727
- Fri, Oct 2$677
- Sat, Oct 10$742
- Mon, Oct 12$729
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cheapest in Sep · around $617
17% below the $740 typical fare
Cheapest round-trip fare found per month · Mexico City → Buenos Aires · cached-price history
Route facts
- Airports
- Benito Juárez (MEX) · Felipe Ángeles (NLU) ↔ Ezeiza (EZE) · Aeroparque (AEP)
- Flight time
- ~11 hours outbound
- Distance
- ~7,399 km each way
- Typical price
- $740 round-trip (seasonal median)
- Airlines on the board
- Copa Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Oct–Dec · Mar–May
MEX → EZE, answered.
Is $617 a good price for Mexico City to Buenos Aires?
Only slightly. The seasonal median is around $740 round-trip and this fare is 17% under it, about $123. We do not call a drop notable until 20%, so this is an ordinary price for the route rather than a reason to hurry.
What is the cheapest month to fly from Mexico City to Buenos Aires?
Across 5 months of cached-fare history, Sep comes out cheapest on this route. The best months to actually be in Buenos Aires are Oct–Dec · Mar–May — when those overlap, that's your window.
How far in advance should I book MEX → Buenos Aires?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 5 months of cached fares, Sep comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Mexico City to Buenos Aires?
The current cheapest fares involve a connection, ticketed under Copa Airlines. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Buenos Aires?
Lock the flight first — then compare stays for Sep 28 – Oct 5 · 7 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next MEX → EZE drop reaches you as soon as we find it.
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