Please call back later buy trimethoprim uk In terms of transatlantic fares, in the irregular but frequent sales offered by BA and Virgin, economy tickets to the Caribbean start at around £500-£600 return, depending on the island. For travel at peak times such as school holiday periods, you may well have to pay several hundred pounds more. Seat-only fares with the charter airlines – Monarch, Thomas Cook and Thomson – can be lower than with the scheduled carriers, particularly for last-minute bookings.