https://www.transfermarkt.com/-frontier-provide-does-frontier-give-refunds-for-cancelled-flights-/thread/forum/696/thread_id/31262/page/1#anchor_31740
https://www.transfermarkt.com/-frontier-provide-does-frontier-give-refunds-for-cancelled-flights-/thread/forum/696/thread_id/31262/page/1#anchor_31740