Business Class Flights from Los Angeles to San Jose

San José, Costa Rica (SJO) stays mild year‑round, with monthly averages ranging roughly 68.4–71.2°F (20.2–21.8°C), so packing light layers works in any month.

The dry season runs December to April; January averages just 12 mm of rain, while October spikes to about 310 mm — over 25 times as much — making Oct the wettest month.

From May through November, expect frequent afternoon showers; plan outdoor activities for morning hours and keep flexible time for travel days.

If you are rain‑averse, late January or February delivers the best odds of clear skies; for lush scenery and quieter prices, late September or October works if you’re comfortable with heavier rain.

Beach extensions on the Pacific coast tend to be hotter and more humid than the capital, so include breathable clothing and quick‑dry footwear during May–Nov.

For Los Angeles (LAX) to San José, Costa Rica (SJO), the best value lands 60–90 days before departure at 84–85, about 15–16% cheaper than buying on day 1.

Booking extremely early at 150 days averages 95, only 5% cheaper than day 1; waiting for the 8–11 week window captures an extra 10–11% benefit.

Prices begin firming inside 45 days (87) and approach last‑minute levels by 14 days (99), so avoid the final two weeks if you want predictable savings.

BusinessClass.com community members often see midweek dips around 10–12 weeks out; set fare alerts near 100–110 days and be prepared to book on the next drop.

For December travel, target the earlier side of the sweet spot (75–105 days) since seats tighten faster during peak demand.

From Los Angeles (LAX) to San José, Costa Rica (SJO), December shows the highest average price level at 117, about 17% above the year’s average; avoid the last two weeks of the month if your dates are flexible.

October is the cheapest month at 86, roughly 14% below average, with September next at 90; shifting a trip from late August to early October can trim around 7–11 points off typical prices.

Dry-season demand keeps Jan–Mar elevated at 108, 108, and 106; compared with May at 96, that’s a 10–12 point swing that you can turn into savings by targeting shoulder weeks.

Community patterns on BusinessClass.com show premium travelers often slide trips to May or early November, aligning with lower average levels of 96 and 95 while weather stays manageable.

If peak timing is unavoidable, combine midweek departures with a 2–3 month booking lead to offset part of the December–February uplift.