Route brief · WAS → SJO
Washington → San José
$316
−38% vs typical
seasonal median $510 · difference $194
Jan 8 '27 – Jan 15 '27 · 7 nights
UnitedNonstop
- Usual monthly lows
- $413–$512
- Board rank
- Stronger than 87%
- Route sample
- 4 observed months
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.
Cached-fare history: across 4 months, Jan is the cheapest for WAS → SJO. Best time to be there: Dec–Apr.
Fares bottom out in January around $316 and peak in November near $559 — a $243 spread across the 4 months we track. The cheapest itinerary we are tracking flies United nonstop and takes about 5 hours outbound, on a 7-night trip. At $316 for 3,297 km each way, that works out to about $48 per 1,000 km flown. That is above the $39 typical of medium-haul fares here. Across the 7 departure cities we track at a similar distance from San José, this fare ranks 2nd — 10% above the $288 from New York. It is also the 3rd cheapest of the 6 routes of similar length we watch out of Washington.
The 2 days we hold a cached fare for
Tap a date → live search
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 Jan · around $316
38% below the $510 typical fare
Cheapest round-trip fare found per month · Washington → San José · cached-price history
Route facts
- Airports
- Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI) ↔ Juan Santamaría (SJO)
- Flight time
- ~5 hours outbound
- Distance
- ~3,297 km each way
- Typical price
- $510 round-trip (seasonal median)
- Airlines on the board
- United
- Itineraries
- Nonstop available
- Best months to visit
- Dec–Apr
WAS → SJO, answered.
Is $316 a good price for Washington to San José?
Yes — the seasonal median for this route is around $510 round-trip. At $316 you're 38% below that, saving about $194, which we rate great for this route.
What is the cheapest month to fly from Washington to San José?
Across 4 months of cached-fare history, Jan comes out cheapest on this route. The best months to actually be in San José are Dec–Apr — when those overlap, that's your window.
How far in advance should I book WAS → 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We do not publish a number for this, because we cannot measure it yet.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. What we can measure is which month is cheap: across 4 months of cached fares, Jan comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Washington to San José?
Yes — the current board includes nonstop fares (United). The outbound leg runs around 5 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 José?
Lock the flight first — then compare stays for Jan 8 '27 – Jan 15 '27 · 7 nights.
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Missed it?
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