Finding cheap flights to San Jose often depends on how much flexibility you have around both your dates and departure airport. San José is Costa Rica’s main international gateway, so it can work well as the starting point for a wider trip, but your ideal flight dates may also be shaped by onward travel to the Pacific or Caribbean coasts. Use a flexible-date search to see how fares change across nearby departures, while allowing time for transfers if your itinerary continues beyond the capital.

Demand can be stronger around Christmas, New Year, Easter and UK school holidays, as well as during the drier months that are popular with visitors. Travelling outside these busy periods may offer a wider choice of fares, although Costa Rica’s wetter season can bring heavier rain in some regions, so check how conditions suit your plans. It is also worth comparing departures from London with airports such as Manchester, Birmingham or Edinburgh, but include rail travel, parking and an overnight stay when judging the real saving.

Start monitoring fares well before travelling and compare several booking dates rather than relying on a single search. A slightly longer connection, different return date or a ticket with baggage included may provide better overall value. Always check connection arrangements carefully, particularly where separate tickets are involved.

When comparing flights to San Jose from the UK, start with the airport that is easiest to reach, rather than looking only at the headline fare. London airports may offer the widest choice of connecting itineraries, while travellers from elsewhere in the UK may find that a domestic connection or an overnight stay is needed. Check whether the whole journey is sold on one ticket, how baggage is handled between flights and whether the connection leaves enough time for a change of terminal or airport.

International services for San José generally arrive at Juan Santamaría International Airport, which is in Alajuela, outside the capital rather than in central San José. This makes the final transfer an important part of the comparison: road traffic can affect journey times, and the most convenient option will depend on whether your accommodation is in central San José, Escazú or elsewhere in the metropolitan area. Some searches may also show Liberia as an alternative Costa Rican arrival airport, but it is a long way from San José and is usually unsuitable if the capital is your actual destination. Look closely at the arrival airport, connection arrangements and onward transport before booking.