Boeing 787 vs Airbus A350: Which is the Better Long-Haul Plane?

Two of the great long-haul aircraft

The 787 Dreamliner and the A350 XWB are the two dominant new-generation widebodies in service in 2026. Both are composite-fuselage, fuel-efficient, and quiet by historical standards. The differences are subtle but real.

The passenger experience

Cabin width

• 787: 5.49 m (216 in) interior width.
• A350: 5.61 m (221 in) interior width.

The A350 is slightly wider — usually noticeable as more elbow room in 9-abreast economy.

Windows

• 787: Larger windows with electronic dimming (no shades).
• A350: Standard sliding window shades, slightly smaller windows than the 787.

The 787 wins here for passengers who love a view.

Cabin altitude and humidity

Both maintain a lower cabin altitude (~6,000 ft vs the older standard 8,000 ft) and higher humidity. Less jet lag, less dehydration.

Noise

The A350 is generally a few dB quieter in cruise than the 787.

The airline view

Range and capacity

• 787-9: ~7,565 nm range, ~290 seats typical.
• A350-900: ~8,100 nm range, ~315 seats typical.
• A350-1000: ~8,700 nm range, ~360 seats typical.

The A350-1000 stretches the envelope further than any 787 variant.

Fuel efficiency

Roughly comparable. The A350-900 has a slight edge per seat-mile on long routes.

Maintenance

Both aircraft have had teething problems on entry into service; both are now mature platforms.

Which airlines fly which

• 787 strongholds: ANA, JAL, United, American, British Airways.
• A350 strongholds: Cathay Pacific, Singapore Airlines, Qatar, Lufthansa, Delta, Air France.

Which to choose as a passenger

• For a great window seat experience: 787.
• For a quieter, slightly wider cabin: A350.
• For most travelers, the differences are smaller than the carrier's seat configuration — a 787 with 9-abreast economy is much tighter than an A350 with the same.

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