Route brief · MIA → SJU
Miami → San Juan
$187
−24% vs typical
seasonal median $245 · difference $58
Sep 4 – Sep 6 · 2 nights
Frontier AirlinesNonstop
- Usual monthly lows
- $115–$307
- Board rank
- Stronger than 66%
- Route sample
- 5 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefSJUSan 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)All routes into San JuanWhen this route gets cheap.
Cached-fare history: across 5 months, Sep is the cheapest for MIA → SJU. Best time to be there: Dec–Apr.
Fares bottom out in September around $111 and peak in March near $474 — a $363 spread across the 5 months we track. The cheapest itinerary we are tracking flies Frontier Airlines nonstop and takes about 3 hours outbound, on a 2-night trip. At $187 for 1,661 km each way, that works out to about $56 per 1,000 km flown. That is above the $41 typical of short-haul fares here. That puts it in the cheaper half of the 9 routes of similar length we watch out of Miami, where the middle fare is $187.
The 6 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 12% lower than when tracking began on Aug 8 — $176 then versus $154 now, across 7 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 $99, on Sep 25.
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.
Cheapest in Sep · around $111
55% below the $245 typical fare
Cheapest round-trip fare found per month · Miami → San Juan · cached-price history
Route facts
- Airports
- Miami (MIA) · Fort Lauderdale (FLL) ↔ Luis Muñoz Marín (SJU)
- Flight time
- ~3 hours outbound
- Distance
- ~1,661 km each way
- Typical price
- $245 round-trip (seasonal median)
- Airlines on the board
- Frontier Airlines
- Itineraries
- Nonstop available
- Best months to visit
- Dec–Apr
MIA → SJU, answered.
Is $187 a good price for Miami to San Juan?
Yes — the seasonal median for this route is around $245 round-trip. At $187 you're 24% below that, saving about $58, which we rate good for this route.
What is the cheapest month to fly from Miami to San Juan?
Across 5 months of cached-fare history, Sep comes out cheapest on this route. The best months to actually be in San Juan are Dec–Apr — when those overlap, that's your window.
How far in advance should I book MIA → 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. What we can measure is which month is cheap: across 5 months of cached fares, Sep comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Miami to San Juan?
Yes — the current board includes nonstop fares (Frontier Airlines). The outbound leg runs around 3 hours.
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 Juan?
Lock the flight first — then compare stays for Sep 4 – Sep 6 · 2 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next MIA → SJU drop reaches you as soon as we find it.
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