The 15-inch MacBook Air M4 takes everything that makes Apple’s smaller Air appealing and stretches it across a much larger display. You get the same fanless M4 architecture, excellent battery life, premium aluminum construction, upgraded 12MP webcam, and strong everyday performance—but with significantly more room for multitasking, spreadsheets, editing, and entertainment.

That larger screen changes the experience more than the specifications might suggest.

The 15-inch Air feels less like an ultraportable and more like a genuine desktop-replacement laptop that happens to be exceptionally thin. At 3.3 pounds and only 0.45 inches thick, it remains surprisingly portable despite its 15.3-inch display.

There is one major consideration in 2026, however: the M4 is no longer the newest MacBook Air. Apple released the M5 MacBook Air in March 2026, meaning the M4 now makes the most sense when you can find it at a substantial discount.

IRONreviews Rating: 9.2/10

Best for: office users, students, writers, programmers, photographers, content creators, travelers who want a larger screen, and anyone who wants MacBook Pro-like screen space without MacBook Pro weight or pricing.

Skip it if: you want the newest Apple hardware, need sustained professional workstation performance, want an OLED or 120Hz display, require lots of built-in ports, or primarily want a gaming laptop.

MacBook Air 15-Inch M4 Specifications

Apple’s M4 configuration combines a 10-core CPU, 10-core GPU, 16-core Neural Engine, hardware-accelerated ray tracing, and 120GB/s of memory bandwidth.

Design: A Large Laptop That Barely Feels Like One

The first thing you notice about the 15-inch MacBook Air is just how thin it is.

A laptop with a 15.3-inch display would traditionally be associated with a relatively thick chassis, substantial weight, cooling vents, and a large charger.

The Air feels completely different.

It measures just 0.45 inches thick and weighs 3.3 pounds, making it one of the more portable large-screen laptops available.

Apple’s aluminum chassis remains exceptionally rigid.

The keyboard deck feels solid, the display hinge is well controlled, and the machine generally feels more expensive than many mainstream Windows laptops.

Laptop Mag also praised its strong construction while noting how unusually thin the machine is for its display size.

Apple offered the M4 Air in:

• Sky Blue
• Midnight
• Starlight
• Silver

Sky Blue was the new colour for the M4 generation.

The design is not new, however.

If you have seen the M2 or M3-generation 15-inch Air, the M4 version looks extremely familiar. There is no dramatic visual redesign and no significant change to the chassis.

But this is one of those situations where Apple arguably did not need to change very much.

The Air already had one of the best large-screen ultraportable designs available.

Design Score: 9.6/10

The 15.3-Inch Display Is the Main Reason to Buy It

The defining feature of this MacBook is its 15.3-inch Liquid Retina display.

It has a native resolution of 2880 × 1864, a pixel density of 224 pixels per inch, up to 500 nits of brightness, support for one billion colours, Wide Color P3, and True Tone.

It is sharp.

It is bright.

And most importantly, it gives you noticeably more working space than the 13-inch Air.

That makes a major difference when working with:

• spreadsheets
• WordPress
• Photoshop
• Lightroom
• coding environments
• multiple browser windows
• research documents
• video timelines
• email alongside another application

The larger display is particularly useful if you frequently work without an external monitor.

Tom’s Guide measured approximately 475 nits of SDR brightness and found strong colour reproduction and accuracy in testing.

Movies also benefit from the extra screen size.

A 15-inch display simply feels considerably more immersive than a 13-inch panel when watching Netflix, YouTube, movies, or sports.

The Biggest Display Weakness: 60Hz

The problem is that this is still a 60Hz LCD.

It does not have:

• OLED
• Mini-LED
• 120Hz ProMotion
• true OLED-level blacks
• the HDR capability of the MacBook Pro

The 15.3-inch panel remains excellent for ordinary productivity, but premium Windows laptops increasingly offer OLED panels with 90Hz or 120Hz refresh rates.

Apple reserves its higher-end display technology for MacBook Pro.

Laptop Mag similarly identified the Air’s display as a bright, attractive LCD rather than cutting-edge panel technology.

For most users this will not be a deal-breaker.

But if you regularly use a 120Hz phone, tablet, gaming monitor, or MacBook Pro, the Air’s scrolling can feel noticeably less fluid.

Display Score: 9.0/10

M4 Performance: Surprisingly Powerful

The M4 chip is the reason this fanless laptop can compete with machines that look considerably more powerful.

The 15-inch version uses Apple’s:

10-core CPU
10-core GPU
16-core Neural Engine
120GB/s unified memory bandwidth

It also includes hardware acceleration for H.264, HEVC, ProRes, ProRes RAW and AV1 decoding.

For normal productivity, the M4 is almost overqualified.

You can comfortably run:

• Chrome with many tabs
• Microsoft Office
• Google Workspace
• WordPress
• Slack
• Teams
• Zoom
• Photoshop
• Lightroom
• Final Cut Pro
• Logic Pro
• coding applications
• moderate video editing

without the laptop feeling slow.

Tom’s Guide reported smooth operation with dozens of Chrome tabs and Slack running simultaneously.

Laptop Mag recorded a Geekbench 6 multi-core score of 14,921 in its testing, showing just how strong the M4’s CPU performance is for a fanless ultraportable.

15-Inch vs 13-Inch M4 Performance

Do not buy the 15-inch version because you expect dramatically higher performance.

The core computing experience is very similar.

The larger model’s advantage is primarily:

screen space

rather than raw speed.

That is actually a good thing.

You are not paying for a slower processor simply because you choose the more portable 13-inch Air, nor do you need the 15-inch model to access the full M4 experience.

The decision between the two should primarily be based on portability versus display size.

Fanless Cooling: Silence Comes With a Tradeoff

Like other MacBook Air models, the M4 Air has no cooling fan.

That means the computer is completely silent.

No fan noise during:

• meetings
• writing
• studying
• web browsing
• video playback
• office work

This is one of the Air’s understated advantages.

Once you become accustomed to a completely silent laptop, returning to a machine with constantly changing fan speeds can feel surprisingly distracting.

However, fanless cooling has limits.

During long, sustained workloads, the processor can eventually reduce performance as heat builds up.

That means the Air is excellent for occasional heavy tasks but not ideal for hours of:

• 3D rendering
• continuous video exports
• complex simulations
• sustained code compilation
• professional 8K editing
• workstation-class workloads

That is where the actively cooled MacBook Pro becomes the better choice.

Performance Score: 9.4/10

16GB RAM Standard Is the Right Starting Point

The M4 generation starts with 16GB of unified memory, with options for 24GB and 32GB.

For most users, 16GB is enough.

It is suitable for:

• office work
• web browsing
• WordPress
• moderate photo editing
• programming
• university work
• multitasking
• light-to-moderate video editing

If you plan to keep the laptop for many years or use professional software heavily, 24GB is worth considering.

32GB makes sense for more specialized workloads such as large development projects, heavy creative multitasking, virtual machines, or local AI workloads.

Remember that unified memory cannot be upgraded after purchase.

Choose carefully.

Storage: 256GB Is Hard to Recommend

The original M4 configuration starts with a 256GB SSD, while Apple offered upgrades to 512GB, 1TB, and 2TB.

256GB is one of the weakest parts of the base configuration.

For simple cloud-based use it can work.

But once you add:

• macOS
• applications
• photos
• music
• videos
• Adobe software
• Final Cut libraries
• downloads
• cached files

the available space can disappear surprisingly quickly.

We recommend at least 512GB.

External SSDs are always an option, but having adequate internal storage makes everyday ownership much easier.

Battery Life: An All-Day Machine

The 15-inch M4 Air contains a 66.5Wh battery.

Apple rates it for up to:

18 hours of video streaming

and

15 hours of wireless web browsing.

Independent testing comes remarkably close.

Laptop Mag recorded approximately 15 hours and 14 minutes of battery life in its testing.

Tom’s Guide reported the same 15-hour-and-14-minute result in its battery test.

For typical office or student use, this means the Air can realistically survive a full working day without constant charging.

That matters even more on a large-screen laptop.

Historically, larger displays often meant noticeably worse endurance. The efficiency of Apple Silicon allows the 15-inch Air to deliver both a large panel and excellent battery life.

Battery Score: 9.6/10

Keyboard: Excellent for Long Work Sessions

Apple’s backlit Magic Keyboard includes full-height function keys, an inverted-T arrow layout, ambient light sensor, and Touch ID.

Typing feels responsive and consistent.

The larger chassis also gives your hands plenty of room, making the 15-inch model especially comfortable for prolonged writing.

Writers, bloggers, programmers, and office users should feel at home quickly.

Touch ID works extremely well for:

• signing in
• approving purchases
• password authentication
• accessing protected information

Trackpad: Still One of the Best

Apple’s Force Touch trackpad remains a standout feature.

It is:

• extremely accurate
• large
• responsive
• consistent across its entire surface

macOS gestures also work exceptionally well with it.

Swiping between desktops, Mission Control, scrolling, zooming, and navigating applications feels natural.

Few Windows laptops match the combination of Apple’s hardware, haptics, and operating-system integration.

Keyboard & Trackpad Score: 9.7/10

12MP Center Stage Webcam

The M4 generation upgraded the Air to a 12MP Center Stage camera with 1080p video recording and Desk View support.

This is an important improvement for anyone who frequently uses:

• Zoom
• Microsoft Teams
• FaceTime
• Google Meet

Center Stage can automatically keep you framed as you move.

Laptop Mag described the upgraded webcam as one of the strongest features of the machine and found that it handled changing lighting conditions well.

For remote work, the camera upgrade arguably matters more than another cosmetic redesign would have.

Webcam Score: 9.4/10

Speakers: One Advantage of Going Bigger

The 15-inch MacBook Air has a six-speaker sound system with force-cancelling woofers, along with Spatial Audio and Dolby Atmos support.

This is an area where the larger chassis pays off.

Audio sounds surprisingly full for such a thin notebook.

Dialogue is clear.

Stereo separation is strong.

Music has respectable bass.

Movies benefit considerably from both the larger display and larger speaker system.

You will still want headphones or dedicated speakers for serious music listening, but the built-in audio is among the stronger systems in the ultraportable category.

Audio Score: 9.2/10

Ports: Apple Could Have Done More

This is probably the biggest hardware complaint.

You get:

• 2 × Thunderbolt 4 / USB-C
• MagSafe 3
• 3.5mm headphone jack

Thunderbolt 4 supports speeds up to 40Gb/s.

There is no:

• USB-A
• HDMI
• SD card reader
• Ethernet

And because the 15-inch chassis is physically larger, the absence of additional ports feels even harder to justify.

Laptop Mag also highlighted the restricted port selection as one of the machine’s main disadvantages.

Many owners will eventually need a USB-C hub or Thunderbolt dock.

MagSafe helps because charging does not consume one of the two USB-C ports.

Still, a third Thunderbolt port or built-in HDMI would have made the 15-inch Air considerably more versatile.

Ports Score: 7.5/10

Two External Monitors

One of the more important M4 improvements is external-display support.

The M4 MacBook Air can run its internal display while simultaneously supporting up to two external displays at up to 6K resolution and 60Hz.

This significantly improves its usefulness as a desktop workstation.

For example, you could run:

15-inch MacBook display + 27-inch monitor + second 27-inch monitor

at the same time.

For programmers, analysts, traders, writers, marketers, designers, and office users, that is a meaningful productivity improvement.

Connectivity

The M4 model supports:

Wi-Fi 6E

and

Bluetooth 5.3.

Those standards remain perfectly capable in 2026.

However, this is another area where the newer M5 model improves things. Apple’s M5 Air introduced Wi-Fi 7 and Bluetooth 6.

For ordinary users, this difference alone should not justify replacing an M4.

Gaming Performance

Gaming on Mac has improved substantially compared with the Intel MacBook era.

The M4 includes:

• a 10-core GPU
• hardware-accelerated ray tracing
• Metal acceleration

and strong overall graphics performance.

Laptop Mag recorded approximately:

44.7 fps in Civilization VI

31 fps in Shadow of the Tomb Raider

19.4 fps in Borderlands 3

at the tested settings.

That demonstrates that gaming is possible.

But the Air is not a gaming laptop.

The bigger problem remains game availability on macOS.

A Windows laptop with a dedicated GeForce RTX GPU is still far better if gaming is one of your main priorities.

Gaming Score: 7.2/10

MacBook Air 15 M4 for Photo Editing

The M4 Air is a very strong machine for photographers.

The combination of:

• P3 colour support
• high-resolution display
• excellent CPU performance
• capable GPU
• fast unified memory
• silent operation

works extremely well with Lightroom and Photoshop.

16GB is adequate for moderate work.

Heavy professional users should consider 24GB or 32GB.

MacBook Air 15 M4 for Video Editing

The M4 includes dedicated media engines for H.264, HEVC, ProRes, and ProRes RAW.

That means Final Cut Pro and other optimized applications can perform extremely well.

Editing:

• 1080p
• 1440p
• standard 4K projects

is completely realistic.

The larger 15.3-inch display is also significantly more pleasant for timeline-based editing than the smaller Air.

For long professional rendering sessions or complicated multi-stream projects, however, MacBook Pro’s active cooling and higher-end chips still make it the better choice.

MacBook Air 15 M4 for Programming

This is an excellent development laptop.

You get:

• Unix-based macOS
• excellent battery life
• fast CPU performance
• strong single-core speed
• silent operation
• large screen
• excellent trackpad
• two-external-monitor support

The 15-inch display is particularly helpful when working with an editor on one side and documentation or browser windows on the other.

For ordinary web development and application development, 16GB should be sufficient.

For Docker-heavy environments, virtual machines, larger builds, or more complex professional workloads, we would choose 24GB or 32GB.

MacBook Air 15 M4 for Students

The 15-inch model is a little less portable than the 13-inch, but it remains light enough for most students.

At only 3.3 pounds, carrying it around campus should not be difficult.

The larger display can be extremely useful for:

• research
• writing essays
• online classes
• reading PDFs
• spreadsheets
• programming
• split-screen multitasking

If maximum portability matters, buy the 13-inch.

If screen space matters more, the 15-inch is worth the extra weight.

MacBook Air 15 M4 vs 13-Inch M4

This is probably the most important comparison.

Choose the 13-inch if you want:

• lower weight
• smaller dimensions
• easier travel
• lower purchase price
• maximum portability

Choose the 15-inch if you want:

• more screen space
• easier multitasking
• bigger video experience
• more comfortable split-screen use
• stronger built-in speaker system

Performance is extremely similar.

The real decision is:

Portability vs screen size.

For users who spend most of their time at a desk without an external monitor, we prefer the 15-inch model.

For frequent travelers, the 13-inch Air wins.

MacBook Air 15 M4 vs MacBook Pro

The Air and Pro serve different buyers.

Choose the MacBook Air 15 M4 if you value:

• low weight
• silent operation
• lower cost
• excellent everyday speed
• large screen
• long battery life

Choose a MacBook Pro if you need:

• sustained heavy performance
• active cooling
• more ports
• HDMI
• SD card reader
• higher-end M-series chips
• 120Hz ProMotion
• superior HDR display technology

For most mainstream users, the Air provides more than enough performance.

Professional workloads are where the Pro earns its extra cost.

MacBook Air M4 vs M5 in 2026

This comparison matters considerably more now.

Apple introduced the M5 MacBook Air on March 3, 2026, with availability beginning March 11.

The M5 model brings several meaningful upgrades, including:

• newer M5 processor
• stronger AI performance
• faster storage
• 512GB standard storage
• Wi-Fi 7
• Bluetooth 6
• storage configurations up to 4TB

Apple’s current Canadian starting price for the 15-inch M5 MacBook Air is CA$1,799.

This creates a simple rule.

Buy the M4 if the discount is significant.

If an M4 model costs substantially less than the equivalent M5, it is still an outstanding laptop.

Buy the M5 if prices are close.

If the difference is small, the M5’s newer processor and especially its 512GB starting storage make it the smarter long-term purchase.

Pros and Cons

What We Like

Large 15.3-inch display

The extra screen space genuinely improves productivity.

Excellent M4 performance

More than enough power for most users.

Extremely thin design

Only 0.45 inches thick.

Surprisingly lightweight

3.3 pounds is excellent for a 15-inch laptop.

16GB RAM standard

A sensible amount for modern computing.

Excellent battery life

Around 15 hours in independent testing.

Completely silent

The fanless design is wonderful for everyday productivity.

Excellent keyboard and trackpad

Still among the best laptop input systems.

Great speakers

The six-speaker system benefits from the larger chassis.

Excellent 12MP webcam

Great for remote workers and students.

Dual external-monitor support

A major improvement for workstation setups.

What We Don’t Like

Only two Thunderbolt ports

A 15-inch chassis has room for more.

No HDMI

You’ll need an adapter.

No SD card reader

Inconvenient for photographers.

60Hz display

Competitors increasingly offer 90Hz and 120Hz.

No OLED

Black levels cannot compete with modern OLED laptops.

256GB base storage

Too small for many users.

Memory and storage aren’t upgradeable

Choose your configuration carefully.

Fanless cooling limits sustained performance

Power users should consider MacBook Pro.

M5 is now available

The M4 only makes sense at the right price.

Best MacBook Air 15 M4 Configuration

For most people, our recommended configuration is:

Apple M4

16GB Unified Memory

512GB SSD

That gives you enough memory for mainstream productivity while fixing the biggest weakness of the 256GB base model.

For more demanding users:

Apple M4

24GB Unified Memory

512GB or 1TB SSD

This is a particularly strong configuration for developers, photographers, and content creators.

Who Should Buy It?

Buy the 15-inch MacBook Air M4 if you:

• want a big MacBook without MacBook Pro weight
• multitask frequently
• use WordPress or productivity applications
• work with spreadsheets
• write extensively
• edit photos
• edit moderate video projects
• program
• attend school or university
• want excellent battery life
• want a completely silent computer
• find an M4 at a strong discount

Don’t buy it if you:

• need the fastest Mac available
• regularly run prolonged professional workloads
• need many ports
• need HDMI and an SD card reader built in
• want 120Hz
• want OLED
• primarily play games
• can buy an M5 for nearly the same price

Is the MacBook Air 15-Inch M4 Still Worth Buying in 2026?

Yes—provided the price is right.

The arrival of the M5 does not suddenly make the M4 obsolete.

The M4 Air is still exceptionally fast for everyday computing.

Its display is sharp.

Battery life is excellent.

Build quality remains outstanding.

The webcam is excellent.

And the 15-inch version offers something the smaller Air cannot: a genuinely spacious workspace without turning into a heavy laptop.

That combination is still difficult to beat.

The M5 is unquestionably the better choice when prices are similar, particularly because the newer model starts with 512GB of storage and introduces newer connectivity.

But discounted M4 inventory could represent considerably better value.

Final Verdict

The 15-inch MacBook Air M4 is essentially the MacBook Air experience with fewer compromises for people who value screen size.

It keeps almost everything that makes the 13-inch Air successful:

• excellent performance
• great battery life
• premium construction
• silent operation
• superb trackpad
• good keyboard
• impressive portability

and adds a significantly more useful 15.3-inch workspace.

The larger display makes multitasking easier, videos more enjoyable, spreadsheets less cramped, photo editing more comfortable, and working without an external monitor significantly more practical.

There are still weaknesses.

Apple should provide more than two Thunderbolt ports on a chassis this large. The 60Hz IPS display is starting to look conservative compared with OLED and high-refresh Windows competitors. The original 256GB storage configuration is difficult to recommend, and the fanless cooling system means serious professionals should still look toward MacBook Pro.

And in 2026, there is the M5 to consider.

But if you find the M4 version at the right clearance, refurbished, or sale price, it remains an outstanding large-screen laptop.

IRONreviews Final Rating: 9.2/10

IRONreviews Verdict

Highly Recommended — especially for anyone who wants MacBook Air portability with substantially more screen space. Buy the M4 when it is meaningfully cheaper than the newer M5 model.