The P.11 was a considerable export success. During October 1933, deliveries of Polish-built P.11bs to Romania commenced. From 1936, Romanian aircraft manufacturer Industria Aeronautică Română (IAR) constructed a further 95 aircraft under the designation of IAR P.11f, powered by the Romanian-built IAR 9Krse engine. A dedicated export model of the P.11, which was designated as the PZL P.24, was developed during the late 1930s. Reportedly, Greece, Portugal, Yugoslavia, Turkey and Republican Spain were at one point interested in procuring the P.11; these eventually resulted in several nations, including Bulgaria, Greece and Turkey purchased the P.24 instead.