Cheap flights from Islip, NY (ISP) to Costa Rica
Find cheap flights from Islip to Costa Rica with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Islip to Costa Rica
Keep the following information in mind while searching for Islip to Costa Rica flight deals. Data was last updated April 17, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Popular in | December |
Cheapest in | September |
Average price | $569 |
Best time to book a flight from Islip to Costa Rica
Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Islip with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Islip to Costa Rica
What is the cheapest month to book a flight from Islip, New York to Costa Rica?
Currently, September is the cheapest month in which you can book a flight from Islip, New York to Costa Rica (average of $398). Flying from Islip, New York to Costa Rica in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Rainfall in Costa Rica by month
Plan your trip to Costa Rica by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.
Temperature in Costa Rica by month
Plan your trip to Costa Rica by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).