The calculated distance (air line) between Poulton-le-Fylde and Swansea is approximately 158 miles respectively 254 kilometers.
By car or train, the actual journey to Swansea is certainly longer, as only the direct route (as the crow flies) between Poulton-le-Fylde and Swansea has been calculated here.
Air line (approximately)
254 kilometers
137 nautical miles