Route brief · BOS → SJO
Boston → San José
$371
round-trip · too little price history on this route to compare
Nov 16 – Nov 24 · 8 nights
American1 stop
Cached fare — the booking search re-prices live before you pay.
Destination briefSJOSan JoséNobody comes for the capital — they come for two coasts, volcanoes and cloud forest, all within four hours.Best windowDec–AprAirportsJuan Santamaría (SJO)All routes into San JoséWhen this route gets cheap.
Best time to be in San José: Dec–Apr. 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 9 hours outbound, on a 8-night trip — ticketed under American, which on a connecting fare need not operate every leg. At $371 for 3,823 km each way, that works out to about $49 per 1,000 km flown. That is above the $39 typical of medium-haul fares here. Across the 6 departure cities we track at a similar distance from San José, this fare ranks 3rd — 29% above the $288 from New York. It is also the 2nd cheapest of the 6 routes of similar length we watch out of Boston. 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 7 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is unchanged since tracking began on Aug 8 — $407 then versus $407 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 $377, on Nov 14.
- Fri, Nov 13$382
- Sat, Nov 14$377
- Sun, Nov 15$407
- Mon, Nov 16$377
- Tue, Nov 17$416
- Wed, Nov 18$579
- Thu, Nov 19$646
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) ↔ Juan Santamaría (SJO)
- Flight time
- ~9 hours outbound
- Distance
- ~3,823 km each way
- Airlines on the board
- American
- Itineraries
- Connections on current fares
- Best months to visit
- Dec–Apr
BOS → SJO, answered.
How far in advance should I book BOS → San José?
We do not publish a number for this, because we cannot measure it yet.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 San José?
The current cheapest fares involve a connection, ticketed under American. 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 San José?
Lock the flight first — then compare stays for Nov 16 – Nov 24 · 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 → SJO drop reaches you as soon as we find it.
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