Route brief · BOS → EZE
Boston → Buenos Aires
$907
round-trip · too little price history on this route to compare
Oct 1 – Oct 31 · 30 nights
Frontier Airlines3 stops
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.
Best time to be in Buenos Aires: Oct–Dec · Mar–May. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking makes 3 stops and takes about 16 hours outbound, on a 30-night trip — ticketed under Frontier Airlines, which on a connecting fare need not operate every leg. At $907 for 8,675 km each way, that works out to about $52 per 1,000 km flown. That is above the $44 typical of long-haul fares here. Across the 14 departure cities we track at a similar distance from Buenos Aires, this fare ranks 7th — 2.0× the $465 we hold from Miami. For context, the middle fare among the 21 routes of similar length we watch out of Boston is $810. We have 1 month of cached prices for this route so far — not enough to call a fare cheap or expensive, so we publish the price without a percentage.
The one day we hold a cached fare for
Tap a date → live search
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.
Route facts
- Airports
- Logan (BOS) ↔ Ezeiza (EZE) · Aeroparque (AEP)
- Flight time
- ~16 hours outbound
- Distance
- ~8,675 km each way
- Airlines on the board
- Frontier Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Oct–Dec · Mar–May
BOS → EZE, answered.
How far in advance should I book BOS → 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We do not publish a number for this, because we cannot measure it yet.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. See /guides/what-moves-a-flight-price/ for the levers we can measure.
Are there nonstop flights from Boston to Buenos Aires?
The current cheapest fares involve a connection, ticketed under Frontier 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 August 23). 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 Oct 1 – Oct 31 · 30 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → EZE drop reaches you as soon as we find it.
Follow BOS → EZE