Probability of every hand (5 cards)
Royal flush 0.000154% · Straight flush 0.00139% · Quads 0.024% · Full house 0.1441% · Flush 0.1965% · Straight 0.3925% · Three of a kind 2.11% · Two pair 4.75% · One pair 42.26% · High card 50.12%. A flush is rarer than a straight, which is exactly why it outranks it — see flush vs straight.