Cheap flights from Key West, FL to San José, Costa Rica

Flights starting at $133. Choose between Silver Airways, Spirit Airlines, or Copa Airlines to find the best price.

Make your travel wishlist, we'll do the rest
Hidden deals
Effortless booking
Travel hacking

Tips to know when travelling to San José

Mailbox
Receive exclusive deals by email
The most popular airlines for this route are Silver Airways, Spirit Airlines, Copa Airlines, Allegiant Air, and Frontier Airlines. Key West and San José have 91 direct flights per week. When you arrive at San José, consider visiting Parque Nacional Manuel Antonio, and Bosque Nuboso Monteverde.

Check-in for a flight from Key West to San José

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Silver AirwaysSIL3MNoOpens 24 days before flight
Closes 2 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Copa AirlinesCMPCMYes0
0
Allegiant AirAAYG4NoOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight

Weather in San José

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January24°C14°C
February26°C14°C
March26°C15°C
April26°C16°C
May25°C17°C
June24°C17°C
July24°C16°C
August24°C16°C
September24°C16°C
October23°C16°C
November23°C15°C
December23°C15°C
Hottest Month
26°C
March
Coldest month
14°C
January
Sunny days
160
days per year

14 day forecast

Monday
18 Mar
97%
29°C16°C
25 Mar
74%
29°C14°C
Tuesday
19 Mar
89%
30°C14°C
26 Mar
89%
29°C14°C
Wednesday
20 Mar
87%
29°C12°C
27 Mar
71%
29°C15°C
Thursday
21 Mar
85%
29°C14°C
28 Mar
89%
29°C13°C
Friday
22 Mar
81%
30°C13°C
29 Mar
89%
29°C12°C
Saturday
23 Mar
83%
30°C15°C
30 Mar
76%
29°C13°C
Sunday
24 Mar
76%
31°C14°C
31 Mar
83%
29°C14°C

Frequently asked questions

What are the most popular routes to and from Key West?
What are the most popular routes to and from San José?
What airports are near Key West?
What airports are near San José?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Key West and San José?
What is Virtual Interlining and how do I use it?
Which airlines fly between Key West and San José?
When's the best time to travel between Key West and San José?
What flights operate between Key West and San José?
How many airports are there near Key West?
How many airports are there near San José?
What time do nonstop (direct) flights between Key West and San José depart?
What time do nonstop (direct) flights between Key West and San José arrive?
What time do flights between Key West and San José depart?
What time do flights between Key West and San José arrive?
Find the best connection from Key West to San José
Search flights, trains & buses
We hack the system,
you fly for less