Gambling terms, explained straight

Casino & Table Games

Straight flush blackjack

In blackjack, a straight flush is a poker hand of three cards in sequential rank, all of the same suit, used in side bets to determine payouts.

Payout in 21+3
9 to 12
Payout in Flush side bet
30 to 11
Cards used
Player's first two cards plus dealer up card2

Key points

  • A straight flush in blackjack is not a hand total but a poker-pattern result from selected cards in a side bet.
  • In the 21+3 side bet, a straight flush pays 9 to 1, based on the player's two cards and the dealer's up card.2
  • The Flush side bet pays 30 to 1 for a straight flush, using the same three-card combination.1

Where this term is used

Sources

  1. Flush wizardofodds.com Provides the payout for a straight flush in the Flush side bet.
  2. 21 + 3 wizardofodds.com Provides the payout and card combination for a straight flush in 21+3.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.