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Pec deck alternatives: what to do when the fly machine is taken or missing

Published October 23, 2026

The best pec deck alternative is the cable fly, because cables keep tension on your chest through the whole arc just like the machine. With dumbbells, do a flat dumbbell fly, or a floor fly if your shoulders complain. At home with no weights, a band chest fly copies the motion, and archer push-ups load your chest harder than any fly you can improvise.

What a pec deck fly alternative has to replace

Chest isolation on a fixed path

Pec Deck Fly

Chest

The pec deck swings your arms together on a fixed arc, so your chest does the work with no balance and no pressing. It is the movement every swap below is trying to replace.

How to do it

  1. Set the seat so your upper arms are level with your shoulders when your forearms rest on the pads.
  2. Sit tall with your back on the pad, elbows bent to about 90 degrees, forearms against the pads and hands on the handles.
  3. Drive your elbows forward and together until the pads nearly meet in front of your chest.
  4. Let the pads swing back slowly until your elbows are level with your shoulders, then repeat.

Cues

  • Push with your elbows, not your hands
  • Squeeze for a second
  • Chest up, shoulders down

Common mistakes

  • Letting the weight drag your elbows behind your shoulders: stop the return when they line up with your shoulders.
  • Hunching forward to close the pads: sit tall and use less weight.

Swap for: Cable Fly, Dumbbell Chest Fly, Machine Chest Press

The pec deck brings your arms together in front of you, which is the main job of your chest. Your triceps barely help, so your chest takes the whole set, and the machine keeps tension on it even when your hands meet in the middle.

A good replacement keeps that across-the-body sweep with your elbows fixed and lets you control the stretch.

Cables and machines

With a cable station free, you can copy the pec deck almost exactly. Set the pulleys for the part of your chest you want, and keep your elbow angle fixed so it stays a fly.

Closest swap in the gym

Cable Fly

Chest

Cables keep tension on your chest through the whole arc, the way the pec deck does, and your arms move freely instead of on a fixed path. Use it whenever the pec deck is taken.

How to do it

  1. Set both pulleys at the lowest notch and take a handle in each hand.
  2. Stand in the middle with your feet about shoulder width and knees soft, arms low and slightly behind your hips, elbows softly bent.
  3. Sweep both handles forward and up in a wide arc until they meet in front of your chest.
  4. Lower them back down and out along the same arc until your chest is stretched, then repeat.

Cues

  • Scoop up and in
  • Elbow bend never changes
  • Shoulders down, chest up

Common mistakes

  • Bending and straightening the elbows, which turns it into a press: lock the angle and move only at the shoulder.
  • Leaning back to heave the handles up: stand tall and take a plate off the stack.
Build a session with Cable Fly

Cable swap with your back supported

Flat-Bench Cable Fly

Chest

Lying on a bench takes balance out of the cable fly, so it is the cable version closest to sitting in the pec deck. Pick it if standing flys feel unstable or your lower back tires.

How to do it

  1. Pull a flat bench into the middle of the cable station and set both pulleys at the bottom.
  2. Grab both handles, lie back with feet flat, and start with your arms open level with your chest, palms up and elbows soft.
  3. Sweep both handles up until they nearly touch above your chest.
  4. Lower them back out to the sides with control until your hands are level with the bench, then repeat.

Cues

  • Arms open like wings
  • Handles meet over your chest
  • Shoulder blades pinned to the bench

Common mistakes

  • Lowering your hands below the bench: stop at bench level, where the stretch is already deep.
  • Clanking the handles together at the top: stop an inch apart so the cables keep pulling.
Build a session with Flat-Bench Cable Fly

Cable swap for the lower chest

High-to-Low Cable Fly

Chest

The pulleys start high, so your arms sweep down and together. It trains the same squeeze as the pec deck with more work on the lower part of your chest.

How to do it

  1. Set both pulleys at the top, take a handle in each hand and step forward to the middle with one foot ahead.
  2. Lean your torso slightly forward and let your arms open out and up, elbows soft, until your chest is stretched.
  3. Sweep the handles down and together in a big arc until they meet in front of your hips.
  4. Pause for a second, then let the cables pull your arms back open along the same path.

Cues

  • Hug a wide tree
  • Hands finish at belt height
  • Same elbow bend all set

Common mistakes

  • Bending the elbows more as you pull, which makes it a press: fix the elbow angle and lighten the stack.
  • Letting the stack slam between reps: stop the return when your hands are in line with your shoulders.
Build a session with High-to-Low Cable Fly

One arm at a time on one pulley

Single-Arm Cable Fly

Chest

Only one cable needed, so it works when the crossover is half taken, and each side has to pull its own weight. Expect lighter loads than the two-arm fly.

How to do it

  1. Set one pulley at about chest height and stand beside the tower, feet a little wider than your shoulders.
  2. Sit your hips back, bend your knees and tip your chest forward, resting your free hand on your knee.
  3. Take the handle in the hand nearest the pulley, arm reaching wide toward it, elbow slightly bent.
  4. Sweep the handle across in a wide arc until it is in front of the opposite side of your chest.
  5. Let it travel back slowly to the stretch, finish your reps, then switch sides.

Cues

  • Free hand on your knee
  • Move only at the shoulder
  • Reach past the middle

Common mistakes

  • Twisting your torso to pull the handle across: keep your hips and shoulders still and use less weight.
  • Letting the cable yank your arm back: open as slowly as you close.
Build a session with Single-Arm Cable Fly

Heavier machine swap

Machine Chest Press

Chest

A press loads your chest harder than any fly and needs no balance, but it adds your triceps. Pick it when you care more about pressing heavy than about the squeeze.

How to do it

  1. Raise or lower the seat until the handles line up with the middle of your chest, then sit with your back on the pad.
  2. Take the handles with straight wrists and your shoulder blades pressed back.
  3. Push forward until your arms are nearly straight.
  4. Return slowly until your hands are level with your chest, then press again.

Cues

  • Handles at mid-chest
  • Back stays on the pad
  • Slow on the way back

Common mistakes

  • Seat too high, so your shoulders take over: lower it until the handles meet your mid-chest.
  • Stopping the handles short of your chest: let them come all the way back each rep.
Build a session with Machine Chest Press

Dumbbells

Dumbbell flys are heaviest at the bottom and nearly weightless at the top, the opposite of the machine. Use lighter weights than on the pec deck and control the stretch.

RIRLift's swap with dumbbells

Dumbbell Chest Fly

Chest

The same arc as the pec deck, lying on a bench with a dumbbell in each hand. The load is heaviest at the bottom stretch and light at the top, so go lighter than your pec deck weight. This is what RIRLift puts in the pec deck's place with dumbbells or a home gym.

How to do it

  1. Lie on a flat bench with the dumbbells pressed up over your chest, palms facing each other.
  2. Bend your elbows slightly and keep that angle fixed for the whole set.
  3. Open your arms in a wide arc until you feel a deep stretch across your chest.
  4. Bring the weights back up along the same arc, as if hugging a big barrel, stopping a few inches apart.

Cues

  • Fixed elbows, moving shoulders
  • Wide arc down, hug up
  • Stretch, don't strain

Common mistakes

  • Bending the elbows more on the way down, which turns the fly into a press: go lighter and lock the elbow angle.
  • Going so deep your shoulders roll forward off the pad: stop where your chest is stretched and your shoulder blades still touch the bench.
Build a session with Dumbbell Chest Fly

Dumbbell fly for the upper chest

Incline Dumbbell Fly

Chest

The same fly on a low incline shifts more of the work to your upper chest. Use it when the pec deck was your only upper-chest isolation.

How to do it

  1. Set the bench to a low incline and lie back with the dumbbells over your upper chest.
  2. Turn your palms to face each other and soften your elbows.
  3. Lower the weights out and down until your chest is fully stretched.
  4. Bring them back up and in along the same arc, pausing at the top without clanking them.

Cues

  • Low incline, same arc
  • Lead with your elbows
  • Slow the bottom inch

Common mistakes

  • Using your flat-fly weight: the incline is weaker, so start lighter.
  • Arching your lower back high off the pad: keep your hips and ribs down.
Build a session with Incline Dumbbell Fly

Shoulder-friendly dumbbell fly

Dumbbell Floor Fly

Chest

The floor stops your arms before the deepest stretch, which spares the front of your shoulders. Pick it if regular flys or cables bother your shoulder.

How to do it

  1. Lie on the floor with your knees bent and both dumbbells up over your chest, palms facing each other.
  2. Bend your elbows a little and keep that angle fixed.
  3. Open your arms out to the sides until your upper arms just touch the floor.
  4. Sweep them back up to meet over your chest along the same curve.

Cues

  • Open like a book
  • Elbows stay slightly bent
  • Light touch on the floor

Common mistakes

  • Bending the elbows more each rep until it becomes a press: lighten the dumbbells.
  • Resting your arms on the floor between reps: touch down and come straight back up.
Build a session with Dumbbell Floor Fly

Dumbbell squeeze without the stretch

Dumbbell Hex Press

Chest

Pressing two dumbbells together keeps your chest squeezing the whole set, a lot like holding the pec deck closed. It trains in a range most people find kind on the shoulders.

How to do it

  1. Lie on a flat bench holding two dumbbells pressed together over your chest, palms facing each other.
  2. Squeeze them into each other hard enough that they stay touching every rep.
  3. Lower the pair to the middle of your chest with your elbows tucked.
  4. Press back to straight arms while keeping the squeeze.

Cues

  • Crush the dumbbells together
  • Elbows along the ribs
  • Slow down, drive up

Common mistakes

  • Letting the dumbbells drift apart at the bottom: that is where the squeeze stops working, so go lighter.
  • Lowering toward your neck: the handles belong at the middle of your breastbone.
Build a session with Dumbbell Hex Press

Bands, straps and bodyweight

At home, a band or suspension trainer gives you the fly motion, and push-ups give you the load.

Pec deck motion with a band at home

Single-Arm Band Chest Fly

Chest

A band anchored in a door gives you the same across-the-body sweep with no weights, and it pulls hardest where your hand crosses your chest. Do one arm at a time.

How to do it

  1. Anchor a band at chest height in a door or around a post, take the handle in one hand and stand with your back to the anchor.
  2. Step forward until the band is taut with your arm open wide and slightly bent.
  3. Sweep your hand across until it is in front of the middle of your chest.
  4. Let the band pull your arm back open slowly, finish your reps, then switch arms.

Cues

  • Reach across your body
  • Fixed elbow angle
  • Slow on the way back

Common mistakes

  • Standing so close the band goes slack at the stretch: step forward until it pulls the whole way.
  • Turning your torso to finish: brace and move only the arm.
Build a session with Single-Arm Band Chest Fly

Bodyweight fly on straps

TRX Chest Fly

Chest

Leaning into suspension straps turns the fly into a bodyweight exercise. Walk your feet back to make it harder, which lets it scale for most people.

How to do it

  1. Set the straps to about waist height, hold the handles and face away from the anchor.
  2. Lean forward with your arms straight out in front until your weight hangs on the handles, body in a straight line.
  3. Let your arms open out to the sides, elbows slightly bent, so your chest lowers between them.
  4. Squeeze your arms back together to return to the start. Walk your feet back to make it harder.

Cues

  • Body straight like a plank
  • Arms open into a wide T
  • Start with a small lean

Common mistakes

  • Leaning too far on your first sets: the angle gets hard fast, so start nearly upright.
  • Hips sagging as your arms open: brace your stomach and squeeze your glutes.
Build a session with TRX Chest Fly

Hardest push-up with no equipment

Archer Push-Up

Chest

With no gear, a press does more for your chest than any fly you can improvise, and the archer push-up loads one side at a time so it stays hard.

How to do it

  1. Set your hands about twice shoulder width apart in a plank, fingers turned slightly out.
  2. Lower toward your right hand, bending the right elbow while the left arm stays straight.
  3. Bring your chest close to your right hand, then press back to the middle.
  4. Repeat to the left and keep alternating, or finish one side first.

Cues

  • Bent arm does the work
  • Straight arm only balances
  • Hips stay square

Common mistakes

  • Bending both arms equally, which makes it a wide push-up: keep the helping arm straight.
  • Twisting your hips toward the floor: hold the plank level as you shift.
Build a session with Archer Push-Up

Example sessions without the pec deck fly

Session 1

Gym, pec deck taken or missing

Open in the session builder
  • Workouts2× a week
  • Working sets20 a week
  • Per workout~25 min
  • EquipmentChest Press, Cable Crossover, Flat Bench

You train in a gym with a cable station and a chest press machine, but no free pec deck.

The machine chest press does the heavy work first, the flat-bench cable fly replaces the pec deck at the same reps, and a high-to-low cable fly finishes the lower chest. 10 working sets.

Chest
ExerciseSets × repsRIRRest
Machine Chest Press1 warm-up set first 4 × 8–12 2 2 min
Flat-Bench Cable Fly 3 × 10–15 1 75 s
High-to-Low Cable Fly 3 × 12–15 1 1 min
How to run it
Once or twice a week on your chest day, at least two days apart.
How to progress
When every set reaches the top of its range at the RIR shown, add the smallest weight jump on the stack next session and start again at the bottom of the range.
Open in the session builder

Session 2

Home, dumbbells and a bench

Open in the session builder
  • Workouts2× a week
  • Working sets20 a week
  • Per workout~20 min
  • EquipmentDumbbells, Flat Bench, Incline Bench

You have adjustable dumbbells and an adjustable bench, and nothing with cables.

A hex press warms your chest up under load, the flat dumbbell fly takes the pec deck's place, and an incline fly covers the upper chest. Dumbbell flys get heavy fast at the bottom, so the reps stay moderate and the rest short. 10 working sets.

Chest
ExerciseSets × repsRIRRest
Dumbbell Hex Press1 warm-up set first 3 × 8–12 2 90 s
Dumbbell Chest Fly 4 × 10–15 1 75 s
Incline Dumbbell Fly 3 × 12–15 1 1 min
How to run it
Twice a week on non-consecutive days. Lower every fly for two seconds.
How to progress
Add reps first. When every fly set reaches 15, move up one dumbbell size and drop back to 10 reps.
Open in the session builder

Session 3

Home, bands or straps only

Open in the session builder
  • Workouts3× a week
  • Working sets30 a week
  • Per workout~25 min
  • EquipmentSuspension Trainer, Resistance Bands

You train at home with a resistance band, a door anchor or suspension straps, and your bodyweight.

Archer push-ups give your chest real load, the suspension fly copies the pec deck's arc with your bodyweight, and the band fly finishes with high reps one arm at a time. 10 working sets.

Chest
ExerciseSets × repsRIRRest
Archer Push-UpSets are per side. 4 × 5–8 2 90 s
TRX Chest Fly 3 × 8–15 1 75 s
Single-Arm Band Chest FlySets are per arm. 3 × 15–20 1 45 s
How to run it
Two or three times a week. Take each set to about one rep short of failure, because band and bodyweight work only gets hard near the end.
How to progress
Add reps until you reach the top of each range, then make it harder: hands wider on the archers, feet further back on the straps, a thicker band or a bigger step away from the anchor.
Open in the session builder

Make it fit you

Questions

What is a good substitute for a pec deck?

The cable fly is the closest, because cables keep tension on your chest through the whole arc. A flat dumbbell fly works if you only have dumbbells and a bench.

How do you do a pec deck without a machine?

Lie on a bench and do a dumbbell fly, or stand between two low cables and sweep the handles together. At home, a band anchored in a door at chest height gives you the same motion one arm at a time.

Can I replace a pec deck with a chest press?

Yes, for building your chest. A chest press loads your chest harder, but it adds your triceps and loses some of the squeeze, so keep a fly in the session if you like that part.

What are some alternatives to pec deck flyes using dumbbells?

The flat dumbbell fly, the incline dumbbell fly for upper chest, the floor fly if your shoulders complain, and the hex press (also called the squeeze press), which keeps your chest working by pressing two dumbbells together.

Are pec decks necessary?

No. Any exercise that brings your arms together under load trains the same muscle, and presses train it too. The pec deck is just an easy way to push your chest close to failure.

Is the pec deck the same as a reverse pec deck?

No. The reverse pec deck faces the other way and trains your rear shoulders and upper back, so these chest swaps do not replace it.