The hand you are describing belongs to a different table
A straight flush is a five-card poker hand: five consecutive cards of the same suit, such as the 7, 8, 9, 10 and jack of hearts. It is one of the strongest hands in poker, and poker pay tables list a specific payout for it. Blackjack does not use five-card hands, does not rank suits, and does not pay anything for a straight, a flush, or a straight flush. If you sat down at a blackjack table and asked what a straight flush pays, the dealer would most likely explain that the game does not recognise that hand at all.
The confusion is common because both games are played with cards at a casino table, and many players move between them. But the two games have different objectives, different hand structures, and different payout logic. Understanding what blackjack pays is the first step to playing a round correctly.
What blackjack pays instead
Blackjack is a comparing game between you and the dealer. The objective is to finish with a hand total closer to 21 than the dealer's total, without exceeding 21. A hand is made of two or more cards, and each card contributes a fixed point value: numbered cards count as their face value, face cards count as 10, and an ace counts as either 1 or 11, whichever helps the hand more at that moment. There is no suit ranking, no sequence requirement, and no five-card combination that changes the outcome.
The payouts in blackjack are tied to how the round ends, not to a hand category. The standard outcomes are:
| Outcome | What happens | Typical payout |
|---|---|---|
| Blackjack | Your first two cards total 21 (an ace plus a 10-value card) | Usually 3 to 2, but some tables pay 6 to 5 — always check the table's posted rules |
| Win | Your final total beats the dealer's without exceeding 21 | 1 to 1 |
| Push | Your total equals the dealer's total | Your wager is returned |
| Loss | Your total exceeds 21, or the dealer's total is higher | You lose your wager |
The blackjack payout is the one figure you should check before sitting down. A table that pays 3 to 2 for a natural blackjack returns more to you on that outcome than a table that pays 6 to 5, and this difference is printed on the table felt or on a placard at the table. It is not hidden in fine print.
How a round unfolds
A blackjack round moves through a fixed sequence, and knowing it makes the table far less intimidating. You begin by buying in: you place cash on the table, never into the dealer's hand, and the dealer exchanges it for chips. You then place a wager in the betting circle in front of your seat before any cards are dealt.
The dealer gives each player two cards face up, and takes two cards for themselves — one face up and one face down. Play then moves around the table. On your turn you decide whether to stand with what you have, hit to take another card, double down by placing an additional wager equal to your original bet in exchange for exactly one more card, or split a pair into two separate hands by placing a matching wager. Some tables also offer surrender, which lets you forfeit half your wager and end the hand before playing further, but only when the table rules allow it.
After all players have acted, the dealer reveals the face-down card and follows a fixed rule: the dealer must hit on totals below a stated threshold and stand on totals at or above it. The most common rule is that the dealer stands on all 17s, but some tables require the dealer to hit a soft 17 — a hand containing an ace counted as 11. This rule is printed on the table, and it matters because a dealer who hits soft 17 has more opportunities to improve a weak hand.
Settlement happens after the dealer's hand is complete. Winning bets are paid, losing bets are collected, and pushes are returned. The cards are then cleared and the next round begins.
Where the poker comparison breaks down
The reason a straight flush pays nothing in blackjack is structural, not a quirk of one casino. The two games use different scoring systems. The table below shows the key differences:
| Feature | Blackjack | Poker |
|---|---|---|
| Objective | Reach a total closer to 21 than the dealer without exceeding it | Form the highest-ranking five-card hand, or win the pot by making others fold |
| Hand size | Two or more cards, no fixed maximum | Exactly five cards form the final hand |
| Suits | Irrelevant | Relevant for flushes |
| Sequences | Irrelevant | Relevant for straights |
| Payout basis | Outcome of the round against the dealer | Hand ranking against other players |
Some blackjack side bets do borrow poker-style hand rankings. A side bet such as a pairs or a poker-based progressive wager may pay for combinations like three of a kind, a straight, or a flush made from your cards and the dealer's upcard. But these are separate optional wagers with their own pay tables, their own house edges, and their own rules printed at the table. They do not change the main blackjack hand, and they are not part of the base game.
What you control at the table
Blackjack gives you more decision points than most table games, and each decision changes the expected rate of loss on the hand. Standing, hitting, doubling and splitting are not equally costly in every situation. Published basic-strategy charts exist for exactly this reason: they map the correct play for every combination of your hand and the dealer's upcard.
But those charts derive from a specific rule set. The number of decks in the shoe, whether the dealer stands or hits on soft 17, whether doubling after splitting is allowed, and whether surrender is offered all shift the correct play on certain hands. A chart built for a game where the dealer stands on all 17s will not be perfectly accurate at a table where the dealer hits soft 17. Before relying on any chart, confirm that its assumptions match the rules printed on the table where you are sitting.
No decision removes the house edge. Blackjack is a negative-expectation game: the mathematical advantage on each wager stays with the operator, and no betting pattern, hand selection, or progression changes that. What changes is how quickly you lose on average and how much variance you experience along the way. Choosing tables with better posted rules and playing those rules correctly reduces the expected rate of loss; it does not create a way to win.
Mistakes that cost new players more than they realise
The most common procedural mistake at a blackjack table is not a strategic one — it is touching the cards. In most shoe-dealt games, players are not allowed to touch the cards at all. The dealer handles every card, and a player who reaches for one will be corrected immediately. In handheld games where cards are dealt face down, use one hand only and keep the cards above the table and in view.
A second mistake is signalling unclearly. The dealer reads hand signals, not spoken words, because the cameras above the table record everything and a verbal call can be disputed. A tap on the felt means hit, a wave of the hand means stand, placing chips next to your original wager means double down, and placing a matching wager while holding up two fingers means split. Learn the signals before you play, or ask the dealer to explain them during a quiet moment.
The third mistake is sitting down without reading the table's printed rules. The blackjack payout, the dealer's soft-17 rule, the double-down restrictions, and the side-bet pay tables are all posted at the table. A player who assumes every blackjack table uses the same rules will make decisions against the wrong rule set, and the difference shows up in the long-run expected loss.
FAQ
Does any blackjack side bet pay for a straight flush?
Some optional side bets use poker-style hand rankings and may include a straight flush on their pay table. These side bets are separate wagers with their own rules, their own posted payouts, and their own house edges. The main blackjack hand never pays for a straight flush.
What is the best hand you can have in blackjack?
The strongest hand is a natural blackjack: an ace paired with any 10-value card as your first two cards. It pays at the posted rate, usually 3 to 2 but sometimes 6 to 5, and it wins immediately unless the dealer also has a blackjack, in which case the hand pushes.
Why do some blackjack tables pay 6 to 5 instead of 3 to 2?
The 6 to 5 payout is a table rule chosen by the operator, and it returns less to the player on a natural blackjack than the 3 to 2 payout. The payout is always printed on the table felt or on a placard, so you can check it before placing a wager. The difference is a rule change, not a change to how the game is played.
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