Apple
MacBook Air 15" (M3)
Laptops
$1,299List price
Explore this product Your shortlist, side by side
MacBook Air 15" (M3) vs MacBook Air 13" (M3)
Find the differences that matter for your next decision.
Apple
MacBook Air 13" (M3)
Laptops
$1,099List price
Explore this product What matters most to you?
Start with all rankable specifications, or focus on a particular use.
Your starting point
Tied overall. MacBook Air 13" (M3) is cheaper.
- The 4 rankable overall specs split 2 to 2.
- Saves $200 at list price.
How we reached this
We compare the published specifications relevant to your priority. Each rankable specification counts once; your selected requirements can rule a product out. This is a guide to the numbers, not a laboratory performance score.
The trade-off to know
MacBook Air 13" (M3): Supports only up to two external displays with lid closed
Look at the differences ↓Refine your requirements
Your other devices
What would rule one out?
Side by side
The differences, in detail.
Start with the key specs, then explore as much as you need.
| What you’re comparing | MacBook Air 15" (M3) | MacBook Air 13" (M3) |
|---|---|---|
| SizeDisplay | 15.3 inches | 13.6 inches |
| PanelDisplay | Liquid Retina IPS LED | Liquid Retina IPS LED |
| ProcessorPerformance | Apple M3 (8-core CPU) | Apple M3 (8-core CPU, 10-core GPU, 16-core Neural Engine) |
| MemoryPerformance | 16GB unified | 16 GB unified memory |
| Claimed battery lifeBattery | Up to 18 hours Apple TV app movie playback | Up to 18 hours Apple TV app / 15 hours wireless web |
Showing 5 of 29 specifications. Missing values stay unlisted. About the sources
Both sides of the decision
What you gain. What you give up.
MacBook Air 15" (M3)
Reasons to choose it
- Completely fanless silent operation
- Slim 11.5mm aluminum design with massive battery life
- Vibrant Liquid Retina display with dual external monitor support
Worth considering
- Display limited to 60Hz without ProMotion
- Base model memory and storage are soldered and non-upgradable
MacBook Air 13" (M3)
Reasons to choose it
- Exceptional battery life (up to 18 hours)
- Fanless completely silent operation
- Compact lightweight design (2.7 lb)
Worth considering
- Supports only up to two external displays with lid closed
- Base model starts at 256GB storage
Beyond the spec sheet
Living with your choice.
Explore the ownership details available for this pair.
Is the newer model worth it?
Apple sibling models compared across generations.
Our recommendation: Compare the spec differences below to see if the price premium justifies the newer model's additions.
What three years could cost
MacBook Air 15" (M3)
3-Year Estimated Total$1,299
MacBook Air 13" (M3)
3-Year Estimated Total$1,124
Commuter Portability & Lap Comfort Check
Real-world travel weight including chargers, bag fit, and lap thermals.
Backpack Sleeve Compatibility
MacBook Air 15" (M3)
Standard laptop bag sleeve
MacBook Air 13" (M3)
Ultra-thin 0.44 in profile; slips into any bag sleeve
Lap Ergonomics & Vent Placement
MacBook Air 15" (M3)
Standard hinge exhaust
MacBook Air 13" (M3)
Fanless zero-noise design; stays comfortably cool on lap
Total Travel Weight (Chassis + Charger)
MacBook Air 15" (M3)
Standard carry weight
MacBook Air 13" (M3)
2.70 lb laptop + 35W dual charger = ~3.2 lb total carry
Know what’s behind the comparison
Published specs. Visible sources.
Clinchmark compares manufacturer specifications and other published information. We have not independently lab-tested these products. Editorial assessments and unknown values are identified in the specification details.
Catalog snapshot: September 1, 2026. Prices, availability, and provider terms can change.
Still weighing it up?
Which is cheaper, the MacBook Air 15" (M3) or the MacBook Air 13" (M3)?
MacBook Air 13" (M3) costs $200 less at list price.
What is the biggest catch with the MacBook Air 15" (M3) or MacBook Air 13" (M3)?
Both has this deal-breaker: no touchscreen. No pen or touch input for marking up PDFs or sketching.
Which is better for travel, the MacBook Air 15" (M3) or the MacBook Air 13" (M3)?
For travel, buy the MacBook Air 13" (M3). Leads 2 of 2 rankable travel specs. Weight: 2.7 lb vs 3.3 lb
What cannot be compared from spec sheets?
Of the 29 specs tracked here, 25 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.