Are there nonstop flights from Luton (LTN) to San José (SJO)?

No. The fastest connection is via Paris, about 11h 58m of total flying time.

What is the fastest connection from Luton (LTN) to San José (SJO)?

via Paris ≈ 11h 58m, via Amsterdam ≈ 12h 5m, via Madrid ≈ 12h 31m (estimated flying time, excluding layovers).

London Luton Airport (LTN) to Juan Santamaría International Airport (SJO)・8,713 km

No nonstop flights. The fastest connection is via Paris (CDG), about 11h 58m of flying time (layover not included).

None.

4 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.