Some do and some only rotate. Fold-flat means the earcups pivot through ninety degrees so the headphone lies flat but stays full width — the Sennheiser MOMENTUM 4 Wireless and Bose QuietComfort Ultra both publish this. Fold-in means the yokes also hinge inward so the whole headphone collapses into a compact block, which is what Sony publishes for the WH-1000XM6 and Soundcore for the Space One. The Apple AirPods Max does not fold at all.
Two mechanisms
Fold-flat and fold-in are not the same thing
Fold-flat: the earcups rotate
Each earcup pivots roughly ninety degrees in its yoke so the cups lie in the same plane as the headband. The headphone becomes a flat arc. Its height and depth drop a lot; its width does not change at all, because the headband is still a full-size headband.
This is the right mechanism for a flat space: a laptop sleeve, the back pocket of a backpack, the slot behind a seatback pocket. It is the wrong mechanism for a small cube.
Fold-in: the yokes hinge as well
The cups rotate and the arms fold inward at a second hinge, so the whole thing collapses toward the center of the headband. The result is a compact block roughly the size of a large orange rather than a flat arc the width of your head.
This is the mechanism that genuinely changes whether you take the headphone with you. It is also the one with an extra joint, which is the part that eventually loosens.
Neither: the flagship that does not fold
Apple publishes dimensions for the AirPods Max — 168.6 mm wide, 83.4 mm deep, 187.3 mm high — and a Smart Case weighing 4.74 oz on top of the headphone’s 13.6 oz. It does not fold. That is a design decision rather than an oversight, and it is the single strongest argument against it as a travel headphone.
A headphone that folds flat fits a different bag. A headphone that folds in fits a different trip.
The data
What each manufacturer actually publishes
| Model | Folding, as published | Container supplied | Weight |
|---|---|---|---|
| Sony WH-1000XM6 | Folds into a magnetic-closure case | Case | approx. 254 g |
| Soundcore Space One | Earcups rotate and fold | Travel pouch | 265 g (9.35 oz) |
| Sennheiser MOMENTUM 4 | Fold-flat earcups | Carry case | approx. 293-295 g |
| Bose QuietComfort Ultra | Earcups rotate flat into a compact hard case | Hard case | approx. 264 g as reported |
| Soundcore Space Q45 | Not published | Hard-shell case | approx. 292-295 g |
| Apple AirPods Max | Does not fold | Smart Case, 4.74 oz | 13.6 oz (386.2 g) |
| JBL Tour One M3 | Not published | Not published | 278 g |
Note the column that does not exist: folded dimensions. Not one manufacturer on this site publishes the size of the folded headphone or of its case, which is the only number that would let you check it against the personal item your airline allows. You are left comparing a verb.
Does it matter
How much space folding actually saves
Enough to change behavior, which is the real test. The pattern across this category is consistent:
- A fold-in plus a soft pouch is the smallest arrangement, and it flexes to fill whatever gap is left in the bag. This is the Space One.
- A fold-in plus a fitted hard case is slightly larger but a fixed, predictable shape, and it protects the hinge. This is the Sony.
- A fold-flat plus a hard case is wider than either, because the case has to be as wide as the headband. This is the Bose and the Sennheiser.
- No fold, plus a case that only covers the cups is the largest and the most awkward shape of all. This is the AirPods Max.
If packing is the deciding factor for you, the practical page is how to pack headphones for travel, and the case options themselves are covered in travel headphone cases.
The trade
What a folding hinge costs you
Three things, in order of how often they actually bite:
- Durability. The hinge is the most-moved part of the headphone and it is the part that develops play first. It is also the hardest part to repair. How long noise-cancelling headphones last covers which parts fail in what order.
- Structural stiffness at the extremes. A folding yoke is a weaker yoke, and that shows up at the ends of the adjustment range — relevant if you are buying for a large head.
- Cable routing. Folding headphones with a detachable cable route it past a hinge, and a cable left attached while folded is how a socket gets damaged.
None of those is a reason to avoid folding. They are reasons to fold it properly: cable out, pads facing in, and into the case rather than loose.
If it has to be small
The option that beats every folding headphone
Earbuds. A canceling earbud and its case occupy a fraction of the space of any folded over-ear, and the comparison is set out in full in earbuds vs over-ear for flying. What you give up is battery, a wired fallback for the seatback screen, and the ability to wear it for eight hours without anything in your ear canal. If size is the whole problem, that may still be the right trade — and if it is not, the foldable canceling roundup ranks the over-ears that collapse best.
In short
Key takeaways
- Fold-flat rotates the earcups only; the headband stays full width.
- Fold-in also hinges the yokes inward, collapsing the headphone into a compact block.
- Sony WH-1000XM6 and Soundcore Space One publish a fold-in; Bose and Sennheiser publish fold-flat.
- Apple AirPods Max does not fold, and its Smart Case adds 4.74 oz on top of 13.6 oz.
- No manufacturer publishes folded dimensions, so you cannot check a case against a personal item.
- The hinge is the part that wears out first, which is the only real cost of buying a folding design.
At a glance
Quick picks
Scores are our editorial judgment from published specifications and cited third-party measurements, not our own testing. The rubric is published in full. Tap any row for the full write-up.
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 |  Sony WH-1000XM6The most complete travel headphone on sale: 254 g, 30 rated hours with noise canceling on, and it folds into a case small enough to stop being a decision. | Best true folding headphone | 9.19.1 out of 10, our editorial score | |
| 2 |  Soundcore Space OneA $99.99 list price that buys 40 rated hours with canceling on, LDAC, 40 mm drivers, a folding hinge and an aux cable. The specification sheet at this level is genuinely hard to argue with. | Best folding headphone under $100 | 8.58.5 out of 10, our editorial score | |
| 3 |  Sennheiser MOMENTUM 4 WirelessSennheiser publishes up to 60 hours. That is the difference between charging at the gate and not thinking about a charger for an entire two-week trip. | Best fold-flat, if you only have a slot | 8.88.8 out of 10, our editorial score | |
| 4 |  Bose QuietComfort Ultra Headphones (2nd Gen)The quietest cabin of anything here, and the only over-ear in this group whose box already contains the audio cable a seatback screen needs. | Best fold-flat with a hard case | 9.09.0 out of 10, our editorial score |
#ad Amazon links are affiliate links. No live price is shown anywhere on this site, so every button reads “Check price on Amazon”. How this is funded.
The picks in full
Every pick, in detail
1. Best true folding headphone
Sony WH-1000XM6
The most complete travel headphone on sale: 254 g, 30 rated hours with noise canceling on, and it folds into a case small enough to stop being a decision.
Our editorial score: 9.1 / 10
#ad Live price not shown. How this is funded
Also sold direct by Sony — we earn nothing there, so check both.
The one to buy if folding is the requirement. Sony publishes that the earcups fold into a magnetic-closure case, and this is a full fold-in rather than a rotation: the yokes hinge inward so the headphone becomes a compact block rather than a flat disc of the same width.
Approximately 254 g, the lightest canceling over-ear on this site, up to 30 rated hours with canceling on and 40 with it off, about 3.5 hours to a full charge, Bluetooth 5.3, and SBC, AAC, LDAC and LC3.
The cost of a folding hinge is honest and small: it is one more mechanism to eventually wear out, and it is the part that fails first on any folding headphone after a few years of being shoved into a bag.
What works on a plane
- Folds, which halves the space it takes in a personal item
- 254 g is light for a flagship over-ear, and weight is what you feel at hour four
- LDAC plus LC3 means it is not locked to one phone ecosystem
- 30 rated hours with noise canceling on covers almost any single routing
What does not
- You pay a flagship price for the last increment of noise canceling
- The folding hinge is one more mechanism to eventually wear out
- No airline two-prong adapter in the box
How it scores against the five travel axes
Published specifications
| Spec | Figure | Source |
|---|---|---|
| Weight | Approx. 254 g (9 oz) | Sony Help Guide specifications |
| Battery, NC on | Up to 30 hours | Sony specifications |
| Battery, NC off | Up to 40 hours | Sony specifications |
| Full charge | Approx. 3.5 hours | Sony Help Guide specifications |
| Bluetooth | 5.3 | Sony Help Guide specifications |
| Codecs | SBC, AAC, LDAC, LC3 | Sony Help Guide specifications |
| Wired response | 4 Hz - 40,000 Hz (IEC) | Sony Help Guide specifications |
| Folds | Yes, into a magnetic-closure case | Sony |
2. Best folding headphone under $100
Soundcore Space One
A $99.99 list price that buys 40 rated hours with canceling on, LDAC, 40 mm drivers, a folding hinge and an aux cable. The specification sheet at this level is genuinely hard to argue with.
Our editorial score: 8.5 / 10
#ad Live price not shown. How this is funded
Also sold direct by Soundcore — we earn nothing there, so check both.
$99.99 at the time of writing, and Soundcore publishes it plainly: the earcups rotate and fold. A travel pouch and an aux cable are in the box, and a pouch rather than a hard case is the right pairing for something that genuinely collapses.
265 g (9.35 oz), up to 40 rated hours with canceling on and up to 55 in normal mode, five minutes of charge for four hours, 40 mm drivers and LDAC.
For a reader whose whole requirement is a canceling headphone that disappears into a personal item, this is the cheapest complete answer on the site. It is also the winner of best headphones under $100.
What works on a plane
- 40 rated hours with canceling on, from a headphone listed at $99.99
- LDAC at this price is unusual, and it is the codec Android users actually want
- Folds and ships with an aux cable, so the seatback screen is covered
- 265 g is not heavy, and the pouch means it travels without a hard case
What does not
- The 98 percent noise-reduction claim is marketing, not a published measurement
- A pouch is not a hard case, so it needs care in a crushed bag
- Pads are the first thing that gives at this price, well before the electronics
How it scores against the five travel axes
Published specifications
| Spec | Figure | Source |
|---|---|---|
| List price | $99.99 at the time of writing | Soundcore |
| Battery, ANC on | Up to 40 hours | Soundcore |
| Battery, normal mode | Up to 55 hours | Soundcore |
| Quick charge | 5 minutes for 4 hours | Soundcore |
| Weight | 265 g (9.35 oz) | Soundcore |
| Drivers | 40 mm | Soundcore |
| Codecs | LDAC | Soundcore |
| Folds | Yes, ear cups rotate and fold | Soundcore |
| In the box | Travel pouch and aux cable | Soundcore |
3. Best fold-flat, if you only have a slot
Sennheiser MOMENTUM 4 Wireless
Sennheiser publishes up to 60 hours. That is the difference between charging at the gate and not thinking about a charger for an entire two-week trip.
Our editorial score: 8.8 / 10
#ad Live price not shown. How this is funded
Also sold direct by Sennheiser — we earn nothing there, so check both.
Sennheiser publishes fold-flat earcups, which is the other mechanism: the cups rotate through ninety degrees so the headphone lies flat, but the headband stays at full width. In a laptop sleeve or a flat pocket that is better than a fold-in. In a cube-shaped personal item it is worse.
Up to 60 rated hours of playback — the longest figure on this site — approximately 293 to 295 g, a 42 mm transducer, and a carry case with a 1.2 m 3.5 mm cable.
It is also the most relaxed clamp here, which matters more than fold type on a long flight. If comfort beats packing for you, this is the right buy regardless of the hinge.
What works on a plane
- Up to 60 rated hours, roughly double the flagship norm
- The 1.2 m 3.5 mm cable is in the box, so seatback screens work straight out of the bag
- Fold-flat earcups make the carry case slim rather than deep
- The 42 mm transducer is the most relaxed listen here over a very long session
What does not
- Published measurements consistently place its noise canceling a step behind the Bose
- The case is broad, so it eats width in a personal item even though it is slim
- Fold-flat is not fold-up, so the footprint is larger than the Sony's
How it scores against the five travel axes
Published specifications
| Spec | Figure | Source |
|---|---|---|
| Battery | Up to 60 hours playback | Sennheiser |
| Weight | Approx. 293-295 g | Sennheiser / published reviews |
| Transducer | 42 mm | Sennheiser |
| In the box | Carry case, USB-C cable, 1.2 m 3.5 mm auxiliary cable | Sennheiser |
| Folds | Fold-flat earcups | Sennheiser |
4. Best fold-flat with a hard case
Bose QuietComfort Ultra Headphones (2nd Gen)
The quietest cabin of anything here, and the only over-ear in this group whose box already contains the audio cable a seatback screen needs.
Our editorial score: 9.0 / 10
#ad Live price not shown. How this is funded
Also sold direct by Bose — we earn nothing there, so check both.
Bose publishes that the earcups rotate flat into a compact hard case, which is the same mechanism as the Sennheiser with a different container. The hard case is the point: it protects the hinge and the pads properly, at the cost of being an inflexible shape in a bag.
Up to 30 rated hours with canceling on, 45 with it off, and 23 with Immersive Audio enabled. The box also has a USB-C cable and a 2.5 mm-to-3.5 mm audio cable, which covers the seatback screen.
Bose does not publish a weight in the specifications we could verify; approximately 264 g is the widely reported figure, labeled as reported for that reason.
What works on a plane
- The best low-frequency canceling in this group, which is exactly the band engine drone lives in
- The 2.5 mm-to-3.5 mm cable is in the box, so a seatback screen needs nothing extra
- Compact hard case for a full-size over-ear
- Up to 45 hours with canceling off, if you only want isolation on a train
What does not
- Immersive Audio costs you a third of the battery, dropping to 23 rated hours
- Heavier than the Sony by roughly 10 g, and clamp is firmer out of the box
- The hard case is compact but still rigid, so it will not squash into a full bag
How it scores against the five travel axes
Published specifications
| Spec | Figure | Source |
|---|---|---|
| Battery, ANC on | Up to 30 hours | Bose |
| Battery, ANC off | Up to 45 hours | Bose |
| Battery, Immersive Audio on | Up to 23 hours | Bose |
| Weight | Approx. 264 g (9.3 oz) as reported | Published reviews |
| USB-C audio | 16-bit, 44.1 or 48 kHz lossless input | Bose support |
| In the box | Hard case, USB-C cable, 2.5 mm-to-3.5 mm audio cable | Bose |
| Folds | Earcups rotate flat into a compact hard case | Bose |
Read the full Bose QuietComfort Ultra Headphones (2nd Gen) review
Questions
Common questions
Do noise-cancelling headphones fold flat?
Many do, but in two different ways. Fold-flat rotates the earcups so the headphone lies flat at full width — published by Sennheiser for the MOMENTUM 4 Wireless and by Bose for the QuietComfort Ultra. Fold-in also hinges the arms inward so it collapses into a block — published by Sony for the WH-1000XM6 and Soundcore for the Space One.
Which noise-cancelling headphones fold the smallest?
Of the models here, the Soundcore Space One with its travel pouch, because it folds in and the pouch flexes to fill a gap. The Sony WH-1000XM6 folds just as compactly but into a fitted case, which is a fixed shape.
Do AirPods Max fold?
No. Apple publishes dimensions of 168.6 mm by 83.4 mm by 187.3 mm and a 4.74 oz Smart Case, with no folding mechanism. At 13.6 oz plus the case, it is the least packable canceling headphone on this site.
Are folding headphones less durable?
The hinge is the most-moved part and typically the first to develop play, so yes, there is a real cost. It is small enough that folding is still the right choice for most travelers, and it is reduced a lot by folding the headphone into its case rather than into a bag.
How much space does folding save?
No manufacturer publishes folded dimensions, so there is no honest number to give. What can be said from the published mechanisms is the ranking: fold-in with a soft pouch is smallest, then fold-in with a hard case, then fold-flat with a hard case, then a non-folding design.
Sources
Where these figures come from
- Sony WH-1000XM6 Help Guide specifications (weight, battery, charge time, Bluetooth, codecs)
- Soundcore Space One product page (earcups rotate and fold, list price, weight, battery, LDAC, travel pouch)
- Sennheiser MOMENTUM 4 Wireless product page (fold-flat earcups, 60 hours, weight, transducer, carry case)
- Bose QuietComfort Ultra Headphones (2nd Gen) product page (earcups rotate flat into a hard case, battery, in the box)
- Apple AirPods Max (USB-C) tech specs (dimensions, weight, Smart Case weight)
Read next
Related reading
- Best foldable noise-cancelling headphones
The ranked buying page for the over-ears that collapse best.
- How to pack headphones for travel
What to do once you know which way yours folds.
- Travel headphone cases
The container is half the packed size.
- Earbuds vs over-ear for flying
The option that beats every folding mechanism on size.