Four to a flush can be a useful video poker draw, but it is not automatically the best hold. In Jacks or Better-style games, four to a flush is often weaker than a paying pair, three of a kind, or four to a royal. Its value depends on the paytable, the exact cards, and whether the draw also has straight or royal-flush potential.
Quick Facts
- Four to a flush means four cards of the same suit.
- You draw one card and need the same suit to complete the flush.
- A standard 52-card deck has 13 cards in each suit.
- After seeing four cards of one suit, 9 unseen cards of that suit remain.
- Four to a flush is not the same as four to a royal.
- Flush pay matters. A 6-for-1 flush is more valuable than a 5-for-1 flush.
- A strategy chart or video poker analyzer is safer than guessing.
Plain Talk
A four-card flush draw looks clean. You only need one more card of the same suit.
That simplicity can be dangerous.
Video poker does not pay for almost making a flush. It pays only if the final hand lands. If you already have a paying pair, three of a kind, or a stronger draw, the flush draw may not be the best play.
Flush value also changes by paytable. In 9/6 Jacks or Better, the flush pays 6 coins for 1. In 8/5 Jacks or Better, the flush pays 5. That one-coin difference affects the value of flush draws and total game RTP.
For a full paytable comparison, the Wizard of Odds Jacks or Better tables show how paytable changes alter expected return.
How It Works
Four to a flush is a one-card draw.
Example:
A♣ 9♣ 6♣ 3♣ K♦
You hold the four clubs and draw one card. There are 47 unseen cards. Nine of those unseen cards are clubs.
So the raw chance to complete the flush is:
| Result | Cards That Help | Unseen Cards | Approximate Chance |
|---|---|---|---|
| Complete flush | 9 | 47 | 19.15% |
| Miss flush | 38 | 47 | 80.85% |
That does not mean the hold has a 19.15% chance to produce value only. Some cards may also create high pairs or other results depending on the exact hand. But the main reason to hold four to a flush is the flush draw itself.
Now compare that with a paying pair.
If the hand is:
J♣ J♦ 9♣ 6♣ 3♣
You may have four clubs if the jack of clubs is part of the flush draw. But the pair of jacks already pays. In many Jacks or Better situations, you keep the paying pair instead of chasing the flush.
Video Poker Hand Example
You are dealt:
A♥ 10♥ 7♥ 4♥ K♣
This is four to a flush. You hold:
A♥ 10♥ 7♥ 4♥
You are drawing one card. Any heart completes the flush. If you hit a heart that creates a higher hand, even better.
Now change the hand:
A♥ K♥ Q♥ 4♥ 9♣
This is still four to a flush, but now it includes A-K-Q of hearts, which is also three to a royal. The best hold may not be all four hearts. Depending on the game and paytable, the royal draw can outrank the ordinary flush draw.
That is why “four to a flush” is not a complete strategy answer. The ranks matter.
From the Casino Side:
Casinos understand that players overvalue simple draws. Four to a flush is easy to see, easy to explain, and emotionally satisfying. The player feels close. The machine does not care.
From a slot-management perspective, the paytable controls how much that flush draw is worth. Reducing the flush payout from 6 to 5 in Jacks or Better lowers the value of flush outcomes and reduces total theoretical return. The player may still think they are playing “Jacks or Better,” but the math is not the same.
Slot technicians and regulators focus on whether the game program, RNG, and paytable operate correctly. Device standards such as GLI-11 Gaming Devices describe testing and gaming-device requirements. Nevada technical standards also address gaming-device control and random-selection integrity through the Nevada Gaming Control Board technical standards.
From the casino’s business side, flush-pay reductions are powerful because flushes occur far more often than royal flushes. Small changes on frequent hands move real money over long coin-in.
Common Mistakes
- Holding four to a flush over a paying pair without checking the strategy.
- Treating weak four-card flushes the same as four to a royal.
- Ignoring whether the flush pays 6, 5, or less.
- Holding three suited junk cards because “a flush is coming.”
- Forgetting that one-card draws miss most of the time.
- Using a strategy chart for the wrong game.
- Thinking a near-miss means the next flush is more likely.
Hard Truth
Four to a flush feels close because your eyes can see it. The paytable only pays when the fifth card actually lands.
FAQ
How many cards complete a four-card flush?
Usually 9 unseen cards complete the flush when you hold four cards of the same suit in a standard 52-card video poker game.
What is the chance of completing a four-card flush?
With one draw card and 47 unseen cards, the raw chance is 9 / 47, or about 19.15%.
Is four to a flush better than a pair?
Not always. A paying pair often beats a weak four-card flush draw in Jacks or Better-style games.
Is four to a flush better than four to a straight?
It depends on the exact ranks and paytable. Flush payouts and straight payouts both matter.
Should I hold four to a royal or four to a flush?
Four to a royal is usually much stronger than an ordinary four-card flush because of the royal flush payout.
Does a lower flush payout change strategy?
Yes. If the flush pays less, flush draws lose value and some borderline decisions can change.
Does this apply to Deuces Wild?
Not directly. Wild-card games have different hand values and strategy priorities.
Deeper Insight
Four to a flush is a good example of why video poker is not slot play. You are making a decision that changes the average return of the hand.
The raw draw probability is easy: 9 suited cards remain out of 47 unseen cards. But the strategy value is not just the chance of making a flush. It is the average payout across every possible final hand. That includes misses, high pairs, straights, flushes, straight flushes, and sometimes royal possibilities.
This is why paytables matter. If the flush payout drops, the expected value of flush draws drops. If the hand also contains royal cards, the royal component can raise its value. Strategy tables at sources such as the Wizard of Odds 9/6 Jacks or Better strategy rank these decisions because intuition is not enough.
Formula / Calculation
Flush Completion Probability = Suited Cards Remaining / Unseen Cards
Flush Completion Probability = 9 / 47 = 19.15%
Expected Value of a Hold = Average return from all possible draws after holding selected cards
RTP = Sum of each hand probability × hand payout
House Edge = 1 - RTP
Formula Explanation in Plain English
The flush draw completes about one time in five. That means it misses about four times in five. Whether it is worth holding depends on how much the flush pays and what you give up by chasing it.
A player who sees only “one card away” misses the bigger question: what is the average value of the hold? The same four-card flush can be correct on one paytable and weaker on another. The same game name can hide different returns.
To understand the full cost, compare the draw with video poker odds, video poker house edge, and the house edge calculator.
Related Reading
For the next draw type, read four to a straight. For stronger royal draws, continue to three to a royal and four to a royal. If you are building the full strategy base, use video poker strategy basics, video poker paytables, and the variance simulator. The video poker guide keeps the whole course in order.