✈️ Flight Guide: Newark (EWR) → San Jose (SJO)

In September, peak travel around Labor Day and the US Open can increase traffic, so plan extra time. The quickest options from Manhattan are NJ Transit trains to Newark Liberty International Airport Station (via Northeast Corridor) and the AirTrain connection; public transit often avoids traffic delays. Rideshares, taxis, and private shuttles are convenient but expect longer drive times during holiday weekends—book ahead to secure lower fares.

For international flights from Newark Liberty International Airport (EWR) to San José (SJO), arrive at least 2.5 to 3 hours before departure in September, especially during holiday weekends when security lines lengthen. If you need to check bags or require special assistance, add more buffer time. Doing mobile check-in and using TSA PreCheck can significantly speed up your airport experience.

Yes—airlines such as United Airlines often operate nonstop flights from Newark Liberty International Airport (EWR) to Juan Santamaría International Airport (SJO) year-round, including September. Schedules can change seasonally, so check the airline's official timetable or flight search engines for exact weekly frequencies and departure times. Booking early can help secure nonstop seats and competitive fares.

As of September, most travel-related COVID restrictions have been relaxed, but entry requirements can change—check Costa Rica's official government or tourism websites for the latest vaccination or testing guidance. Also verify airline-specific documentation rules before leaving Newark Liberty International Airport (EWR). Carry digital and printed copies of passports, vaccination cards if required, and travel insurance details.

To find cheap EWR to SJO flights in September, compare fares on meta-search engines, sign up for fare alerts, and be flexible with midweek travel dates—Tuesdays and Wednesdays often yield lower prices. Consider nearby airports (JFK or LGA) for additional options, and book 6–10 weeks in advance for the best chance at discounted fares. Use filters for nonstop vs. connecting flights to balance price and travel time.

Newark Liberty International Airport (EWR) serves the New York metropolitan area, including Manhattan (New York City), Newark, Jersey City, Hoboken, and parts of northern New Jersey; many travelers also use EWR to access Philadelphia and Stamford via ground connections. If you're flying to Costa Rica, you may combine connections from these cities to reach EWR or continue to Juan Santamaría International Airport (SJO).

Upon arrival at Juan Santamaría International Airport (SJO), passengers typically proceed through immigration, collect checked luggage, and pass customs. September is in Costa Rica's rainy season so arrival queues can fluctuate; allow 30–90 minutes depending on flight volume. Have your passport, customs declaration (if required), and hotel reservations ready to streamline the process.

September is part of Costa Rica's green (rainy) season—expect afternoon and evening downpours, high humidity, and lush landscapes around San José and nearby regions. Morning travel is often drier, so plan excursions early in the day. Pack a lightweight rain jacket and quick-dry clothes; road transfers to coastal areas may be slower due to wet conditions.

From Juan Santamaría International Airport (SJO), options include official airport taxis, shared shuttles, private transfers, and local buses to downtown San José and nearby cities like Alajuela, Heredia, and Cartago. Shared shuttles and private transfers are often the most reliable in September's rainy conditions. Confirm shuttle reservations in advance during busy festival dates around Independence Day (mid-September).

Juan Santamaría International Airport (SJO) offers domestic connections via local carriers to destinations like Quepos/Manuel Antonio and smaller airports, though many travelers fly or drive to Liberia (LIR) for Liberia's international gateway to the Guanacaste region. In September, schedules can be reduced due to lower tourist volumes—book domestic connections in advance to secure seats.

Juan Santamaría International Airport (SJO) serves San José and Alajuela directly, and it’s a gateway to popular destinations such as Arenal/La Fortuna, Manuel Antonio, Monteverde, Jacó, Quepos, and the Guanacaste region (via ground transfers or short domestic flights). Travelers often combine SJO arrival with onward travel to Puntarenas, Cartago, or the Caribbean side (Limón) depending on itinerary.

In September, watch for tropical storms in the region—these can produce heavy rainfall and localized flooding that may affect road transfers from Juan Santamaría International Airport (SJO). Check Costa Rica's national meteorological institute and airline notifications before travel. Also note local celebrations around Independence Day (September 15–16) which can increase domestic travel demand and impact shuttle availability.