Crossword clues for the word: CHECKIN The word CHECKIN has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for CHECKIN Showing 1 to 6 of 6 results Clue(s) "Arrive, officially" Begin a hotel visit It often involves getting a card nowadays Register at a hotel: 2 wds. Register at the hotel Report one's presence.