Boston to San Jose BOS → SJO
Logan International Airport (BOS) → Juan Santamaria International Airport (SJO)
The cheapest one-way found recently is $221 with United Airlines, 1 Jan 2027, found yesterday.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $230 to $309.
Cheapest one-way found recently
$221
1 Jan 2027 · United Airlines
Logan International Airport (BOS) → Juan Santamaria International Airport (SJO)
Leaves 7:00 a.m. · 16 h 32 min trip
1 stop
found yesterday
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$221 1 Jan 2027found yesterdayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 20 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $172 to $231.
20 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 1 Jan 2027 to 11 Aug 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold one-way fares on 1 other departure date within 3 days of 1 Jan 2027, and it is not cheaper.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 1 Jan 2027 | $221 | United Airlines | Logan International Airport (BOS) → Juan Santamaria International Airport (SJO) | 1 stop | found yesterday | Open this trip |
| 2 Jan 2027 | $379 | United Airlines | Logan International Airport (BOS) → Juan Santamaria International Airport (SJO) | 2 stops | found yesterday | Open this trip |
| 11 Aug 2027 | $238 | American Airlines | Logan International Airport (BOS) → Juan Santamaria International Airport (SJO) | 1 stop | found today | Open this trip |
Which month looks cheapest?
January 2027 is the cheapest month — from $221.
Airlines on the cheapest dates: United Airlines, American Airlines.
Premium cabin fares from Boston to San Jose
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 1 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Boston to San Jose?
One-way
Not enough history yet: in 20 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest one-way found recently is for 1 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work