Looking for some interesting open-jaw solution from Europe to Central America then have a look on this deal based on British Airways promotion. (With help of their Oneworld partner Iberia). Open-jaw flights on route Spain (Barcelona) to Costa Rica with return from Panama back to UK (cheapest to London or Manchester) are now available already for £291 (€348. Flights on outbound flight are routed via London. Remember you can not skip first leg between Spain and UK. Rest of the itinerary would be voided.. This deal is including all taxes and fees as well as checked luggage.
To book the cheapest British Airways flights available look for travel dates between 4th of April and 15th of June 2017. Based on date of your outbound flight from Europe to Central America. Max stay 1 month. Promotion is running till 4th of January or until sold out..
Booking sample
Travel samples
4. - 21.4.
11. - 23.4.
21.4. - 12.5.
2. - 19.5.
19.5. - 11.6.
9.6. - 8.7.
Booking sample of cheap open-jaw flights Spain to Costa Rica & Panama to UK £291 (€348) here. In this case you woudl depart from Barcelona to San Jose on 21st of April. Your return flight from Panama City back to London would be then on 15th of May 2017.