ExceptionalNonstop · 1.5h
SFO to LASUnited States
Las Vegas
$61
usually $155
−61%
Most monthly lows $130–$295. Cheaper than every other month on record (5).
Flights · SFO → SJU
San Francisco to San Juan
Best fare, round trip
$348
Too little price history on this route to compare — the fare is shown as found.
Found
- Depart
- Sun 10 Jan
- Return
- Sun 17 Jan
- Stay
- 7 nights
- Flight
- 1 stop · 8h
- Airline
JetBlue
Cached fare — the booking search re-prices live before you pay.
Puerto RicoSan JuanFive centuries of old town on a Caribbean island that takes US dollars and needs no passport from the States.Best windowDec–AprAirportsLuis Muñoz Marín (SJU)Every route into San JuanFare seasonality
When this route gets cheap.
The cheapest itinerary we are tracking makes one stop and takes about 8 hours outbound, on a 7-night trip — ticketed under JetBlue, which on a connecting fare need not operate every leg. At $348 for 5,829 km each way, that works out to about $30 per 1,000 km flown. That is below the $43 per 1,000 km typical of medium-haul fares here. Across the 10 departure cities we track at a similar distance from San Juan, this fare ranks 2nd — 56% above the $223 from Los Angeles. It is also the 2nd cheapest of the 8 routes of similar length we watch out of San Francisco. 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. Fare history here is still too short to name a cheap season. The best time to be in San Juan: Dec–Apr.
The one day we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 31% lower than when tracking began on 8 Aug — $504 then versus $348 now, across 10 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 $348, on 10 Jan '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.
Cached fares · checked 17 Oct 2026
We are still collecting this route's months — 1 month of cached prices so far, too few to chart.
Route facts
- Airports
- SFO · Oakland (OAK) · San José (SJC) ↔ Luis Muñoz Marín (SJU)
- Flight time
- ≈8 hours outbound
- Distance
- ≈5,829 km each way
- Airlines on the board
- JetBlue
- Itineraries
- Connections on current fares
- Best months to visit
- Dec–Apr
Good to know
SF → SJU, answered.
How far in advance should I book SF → San Juan?
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. Our guide Why flight prices change covers the levers we can measure.
Are there nonstop flights from San Francisco to San Juan?
The current cheapest fares involve a connection, ticketed under JetBlue. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on 17 October). 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 Juan?
Lock the flight first — then compare stays for 10–17 Jan '27 · 7 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next SF → SJU drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
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