The authorities of the Republic of Poland, after consultations between the President and the Government, are ready to deploy – immediately and free of charge – all their MIG-29 jets to the Ramstein Air Base and place them at the disposal of the Government of the United States of America.
https://www.gov.pl/web/diplomacy/statement-of-the-minister-of-foreign-affairs-of-the-republic-of-poland-in-connection-with-the-statement-by-the-us-secretary-of-state-on-providing-airplanes-to-ukraine