Active Flights · Blog

#capacity

8 articles tagged #capacity.

Articles

Departures on each weekday of an illustrative route drawn as bars, Friday highlighted, on an Active Flights blog card.

Why counting flights and seats from SSIM is harder than it looks

Weekly frequencies and seats are the first figures anyone wants from a schedule — and the ones most often wrong. The traps behind the numbers, and why they matter.

A ring filled about two-thirds of the way round, labelled 547 of 870 Airbus deliveries, with 323 still to go in the fourth quarter, on an Active Flights blog card.

Q3 2026 aircraft deliveries: Airbus and Boeing vs their targets

Q3 2026 aircraft deliveries: Airbus has 547 jets out the door and needs about 108 a month to hit 870; Boeing delivered 161. What it means for next summer.

A grid of aircraft seats with most of them lit up and 85.1% set large beside it, on an Active Flights blog card.

What Is Airline Load Factor? Why Planes Are So Full Now

Airline load factor is the share of seats an airline fills. How it's calculated, why it hit a record 83.6% in 2025, and what a full plane doesn't tell you.

A tall bar for seats up 2.2% beside a short bar for departures up 0.9%, captioned 2.54 billion seats this winter, on an Active Flights blog card.

Winter 2026/27 schedule: what airlines changed this season

The winter 2026/27 schedule began on 25 October. Seats are up 2.2% worldwide on fewer extra flights: Italy, Brazil and Spain grow, Germany and Russia shrink.

A load-factor gauge filled to 83.8% beside a grid of mostly-occupied seats, on an Active Flights blog card.

The 2026 capacity squeeze: fuller planes, thinner margins, and the pressure on schedule data

Airlines are flying at record load factors on a ~3.9% net margin while new aircraft stay scarce. When every seat counts this much, the schedule is where efficiency is won or lost.

A world map dotted with coordinated-airport markers over a schedule grid, on an Active Flights blog card.

395 coordinated airports: the 2026 slot picture

Nearly 400 airports worldwide restrict who can operate and when in 2026, and around 43% of global departures leave a slot-coordinated field. Here's the 2026 landscape — and why a published schedule and its slot holdings have to agree.

A capacity bar built from seats multiplied by frequency, next to a faded, unavailable distance axis, on an Active Flights blog card.

Reading capacity without distances: the ASM proxy

SSIM carries seats and times but no stage lengths, so you can't compute true available seat-miles from the file alone. Here's what you can honestly measure — and where the proxy ends.

A time-of-day slot strip with allocated and constrained slots beside a Level 3 coordinated-airport badge, on an Active Flights blog card.

Airport slots and the schedule: a plain guide to coordination (WASG basics)

At the world's busiest airports you can't just publish a flight — you need a slot. Here's how slot coordination works, the three airport levels, and why the schedule and the slot book have to agree.

SSIM Toolkit · Desktop app

Download SSIM Toolkit

Enter your email and we'll send you a download link. It works for 24 hours. Free during the Early Access Preview.

By downloading, you'll receive release notes and product updates from Active Flights by email. Unsubscribe any time. See our privacy policy.