Flush vs Straight in Poker

If you have ever sat at a Texas Hold'em table and watched a player with four cards of the same suit throw their hand in at the river, only for their opponent to reveal four cards in a row, you know the confusion. It is one of the most common disputes in the game. Which hand takes the pot? The straight or the flush? The answer is definitive and consistent across almost every poker variant: a flush beats a straight. This rule exists because of the mathematical rarity of each hand. A flush is statistically harder to assemble than a straight, so it deserves the higher rank. Understanding this hierarchy is essential for intermediate players who want to stop leaking chips in close showdowns. This guide breaks down the exact rankings, the probability behind them, and how to handle common mistakes at the table.

The Verdict: Flush Beats Straight

In standard poker hand rankings, the order is fixed. From highest to lowest, the major hands are:

A flush consists of any five cards of the same suit, not necessarily in consecutive order. A straight consists of any five cards in consecutive rank, not necessarily of the same suit. Because the flush sits above the straight in this hierarchy, any flush will defeat any straight, regardless of the card values. For example, a flush of 2♥ 3♥ 5♥ 7♥ J♥ will beat a straight of 10♠ J♠ Q♠ K♠ A♠. The Ace-high straight is the highest possible straight, but it still loses to the 2-high flush. This rule applies to Texas Hold'em, Omaha, Seven-Card Stud, and most draw poker games. The only major exception is when the two hands combine into a Straight Flush, which we will cover later. For now, remember the simple rule: if you have five cards of the same suit, and your opponent has five cards in a row, you win.

Why a Flush Outranks a Straight (the Probability Reason)

Poker hand rankings are not arbitrary. They are based on the frequency with which each hand appears in a random five-card deal. The rarer the hand, the higher it ranks. Let's look at the math. In a standard 52-card deck, there are 2,598,960 possible five-card hands. A straight occurs in 10,200 of those combinations. This means a straight appears roughly 0.39% of the time, or about once every 255 hands. A flush occurs in 5,108 of those combinations. This means a flush appears roughly 0.20% of the time, or about once every 500 hands. Because a flush is roughly half as common as a straight, it is the stronger hand. The probability difference is significant. When you hold a flush, you are holding a statistically more unique combination of cards than the player holding a straight. This mathematical reality is why the flush outranks the straight. It is not about which hand looks "nicer" or which has higher card values. It is about raw frequency. The flush is the rarer event, so it commands the higher rank.

Combinatorics Breakdown

To understand why the flush is rarer, consider the combinations. For a straight, you need five consecutive ranks. There are 10 possible straights (A-2-3-4-5 up to 10-J-Q-K-A). For each rank, there are 4 suits. So, 4^5 = 1,024 combinations per straight. 10 straights x 1,024 = 10,240. Subtract the 40 Straight Flushes, and you get 10,200 pure straights. For a flush, you need five cards from the same suit. There are 13 cards in each suit. The number of ways to choose 5 cards from 13 is 13 choose 5, which is 1,287. There are 4 suits, so 1,287 x 4 = 5,148. Subtract the 40 Straight Flushes, and you get 5,108 pure flushes. The numbers speak for themselves. There are exactly twice as many straights as there are flushes. This 2:1 ratio is the foundation of the ranking.

Side-by-Side Hand Examples

Seeing the hands side-by-side helps clarify the rule. Here are three common scenarios where a flush defeats a straight. Example 1: Low Flush vs High Straight Board: 2♥ 5♥ 8♥ J♠ K♠ Player A holds: 3♥ 4♥ (making a 4-high flush: 2♥ 3♥ 4♥ 5♥ 8♥) Player B holds: Q♠ A♠ (making an Ace-high straight: 10♠ J♠ Q♠ K♠ A♠) Result: Player A wins. The flush beats the straight, even though the straight has an Ace and the flush has a 4. Example 2: Ace-High Flush vs King-High Straight Board: 7♥ 9♥ J♥ Q♥ K♣ Player A holds: A♥ 2♥ (making an Ace-high flush: 2♥ 7♥ 9♥ J♥ A♥) Player B holds: 10♠ J♠ (making a King-high straight: 9♥ 10♠ J♠ Q♥ K♣) Result: Player A wins. The Ace-high flush is the strongest possible pure flush, and it still beats the King-high straight. Example 3: Same Suit, No Straight Board: 5♥ 6♥ 8♥ 10♥ Q♣ Player A holds: 7♥ 9♥ (making a Queen-high flush: 5♥ 6♥ 7♥ 8♥ 9♥ 10♥ Q♥ — wait, this is a straight flush. Let's adjust.) Let's use: Board: 5♥ 6♥ 8♥ 10♥ Q♣ Player A holds: 2♥ 3♥ (making a 10-high flush: 2♥ 3♥ 5♥ 6♥ 8♥ 10♥ — best 5: 3♥ 5♥ 6♥ 8♥ 10♥) Player B holds: 9♠ J♠ (making a Jack-high straight: 8♥ 9♠ 10♥ J♠ Q♣) Result: Player A wins. The flush beats the straight. These examples show that card rank within the hand matters less than the hand type itself. The flush is the superior category.

What About a Straight Flush?

The confusion often arises because a Straight Flush combines both hands. A Straight Flush is five consecutive cards of the same suit. It is the second-highest hand in poker, beaten only by the Royal Flush. If you have a Straight Flush, you automatically have both a flush and a straight. In this case, the Straight Flush beats a regular flush and a regular straight. For example: Board: 5♥ 6♥ 7♥ 8♥ 9♠ Player A holds: 4♥ 10♥ (making a 10-high Straight Flush: 4♥ 5♥ 6♥ 7♥ 8♥ 9♥ 10♥ — best 5: 6♥ 7♥ 8♥ 9♥ 10♥) Player B holds: 2♥ 3♥ (making a 9-high flush: 2♥ 3♥ 5♥ 6♥ 7♥ 8♥ 9♥ — best 5: 5♥ 6♥ 7♥ 8♥ 9♥) Result: Player A wins. The Straight Flush beats the Flush. However, if you only have a flush, and your opponent only has a straight, the flush wins. The Straight Flush is a separate, higher category. It is not a "tie-breaker" between a flush and a straight. It is its own hand. It is important to distinguish between a "Flush" and a "Straight Flush". If your five cards are in order and in suit, you have a Straight Flush. If they are in suit but not in order, you have a Flush. If they are in order but not in suit, you have a Straight. The rankings remain: Straight Flush > Flush > Straight.

Common Mistakes at Low Stakes

Even experienced players sometimes mix up the flush and straight, but it is most common at low stakes. Here are the most frequent errors. Mistake 1: Thinking a Straight Beats a Flush Some players believe that because a straight involves consecutive cards, it is "stronger" than a flush, which can have gaps. This is incorrect. The flush is rarer, so it wins. Mistake 2: Comparing High Cards Across Hand Types Players often compare the highest card of the flush to the highest card of the straight. For example, they think an Ace-high straight beats a King-high flush. This is only true if the hands are the same type. When comparing different hand types, the type matters more than the card values. Any flush beats any straight. Mistake 3: Ignoring the Board In Texas Hold'em, players sometimes forget that the board cards count for both players. If the board has four hearts, and Player A has a heart, Player A has a flush. If Player B has four cards in a row using the board, Player B has a straight. The flush still wins. Players often think their own hole cards must be in suit or in order, but the best five-card hand is what matters. Mistake 4: Confusing Omaha Rules In Omaha, players must use exactly two hole cards and three board cards. This can create complex hands. However, the ranking remains the same. A flush beats a straight. The only difference is how the hands are constructed. To avoid these mistakes, always identify the hand type first. Ask yourself: "Do I have five cards of the same suit?" If yes, you have a flush. "Does my opponent have five cards in a row?" If yes, they have a straight. The flush wins. Simple.

Worked Showdown Scenarios

Let's walk through two detailed showdown scenarios to solidify the concept. Scenario 1: The Turn Trap Pre-flop: Player A raises with J♥ Q♥. Player B calls with 10♠ 9♠. Flop: 8♥ K♥ 2♣. Player A has a flush draw. Player B has a gutshot straight draw. Turn: 7♥. Player A now has a flush (2♥ 7♥ 8♥ J♥ Q♥). Player B has a straight draw (needs a 9 or J for a straight, but the J is in Player A's hand, so only 9s work). River: 5♠. Player B misses. Player A shows the flush. Player B shows 10♠ 9♠, claiming a straight (5♠ 7♥ 8♥ 9♠ 10♠). Result: Player A wins. The flush beats the straight. Player B's straight is 10-high. Player A's flush is Queen-high. The flush wins regardless. Scenario 2: The Ace High Confusion Pre-flop: Player A raises with A♥ K♥. Player B calls with A♠ K♠. Flop: 2♥ 5♥ 9♥. Player A has a flush. Player B has a flush draw. Turn: Q♠. Player B now has a straight draw (needs a J or 10). River: J♠. Player B makes a straight (9♥ J♠ Q♠ K♠ A♠). Player A still has a flush (2♥ 5♥ 9♥ K♥ A♥). Result: Player A wins. Player B thinks their Ace-high straight is unbeatable. But Player A's Ace-high flush is stronger. The flush beats the straight. These scenarios highlight the importance of knowing the ranking. In Scenario 1, Player B might have called the turn with a straight draw, but on the river, the flush was already made. In Scenario 2, Player B made their hand on the river, but it was still inferior to Player A's pre-existing flush. Always check the hand type before comparing card values.

Conclusion

Understanding that a flush beats a straight is a fundamental skill in poker. It is based on the mathematical rarity of the hands, with the flush appearing roughly half as often as the straight. This ranking applies to Texas Hold'em, Omaha, and most other poker variants. By memorizing the hand rankings and practicing with side-by-side examples, you can avoid common mistakes and make more confident decisions at the table. For a complete overview of all hand types, review our guide on Poker Hand Rankings. To learn more about building and playing flushes, see Flush in Poker. For strategies involving straights, read Straight in Poker. Understanding the math behind these hands is covered in Poker Hands Probability, and for deeper combinatorics, check Poker Combinations. Finally, for a full refresher on the basics, visit Poker Rules.