Route brief · BOS → RIO
Boston → Rio de Janeiro
$439
round-trip · too little price history on this route to compare
Nov 27 – Dec 5 · 8 nights
Copa Airlines1 stop
Cached fare — the booking search re-prices live before you pay.
Destination briefRIORio de JaneiroBeaches with mountains growing out of them. Fares south swing hard — we catch the dips.Best windowApr–Jun · Sep–OctAirportsGaleão (GIG) · Santos Dumont (SDU)All routes into Rio de JaneiroWhen this route gets cheap.
Best time to be in Rio de Janeiro: Apr–Jun · Sep–Oct. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking makes one stop and takes about 13 hours outbound, on a 8-night trip — ticketed under Copa Airlines, which on a connecting fare need not operate every leg. At $439 for 7,802 km each way, that works out to about $28 per 1,000 km flown. That is well under the $44 that long-haul fares on this board typically run. Of the 23 departure cities we track at a similar distance from Rio de Janeiro, this is the cheapest right now — 7% under the next one, Chicago. That puts it in the cheaper half of the 26 routes of similar length we watch out of Boston, where the middle fare is $739. We have 2 months 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 3 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 4% higher than when tracking began on Aug 8 — $603 then versus $625 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 $439, on Nov 27.
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) ↔ Galeão (GIG) · Santos Dumont (SDU)
- Flight time
- ~13 hours outbound
- Distance
- ~7,802 km each way
- Airlines on the board
- Copa Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Apr–Jun · Sep–Oct
BOS → RIO, answered.
How far in advance should I book BOS → Rio de Janeiro?
We do not publish a number for this, because we cannot measure it yet.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 Rio de Janeiro?
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 Rio de Janeiro?
Lock the flight first — then compare stays for Nov 27 – Dec 5 · 8 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next BOS → RIO drop reaches you as soon as we find it.
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