Business Wire

Cirium: Radical Shifts in US Flight Schedules This Summer Reveal Why Airlines Need New Planning Tools to Stay Ahead of the Curve

27.10.2021 15:00:00 EEST | Business Wire | Press release

Share

The new DiioTM Schedule Snapshot offering released by Cirium, the aviation analytics firm, reveals how planning by the major US airlines changed over the summer, with 20% of flights being removed from their schedule for September.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20211027005581/en/

To view this piece of content from mms.businesswire.com, please give your consent at the top of this page.

The September flight schedules as published by American Airlines, Delta Air Lines, Southwest, and United Airlines initially in May compared with the revised plan published four months later. (Graphic: Business Wire)

At the start of May 2021, the plan for what carriers would fly in September was more or less in line with pre-pandemic levels in 2019. By the time they came to fly the September schedule, American Airlines, Delta Air Lines, Southwest and United Airlines had significantly cut back their flights.

Airlines are now making major changes to the way they schedule flights—publishing or removing them much closer to the date of departure as they struggle with the uncertainties brought on by the pandemic.

Prior to the pandemic schedules would remain fairly stable over a season, with few changes—positive or negative—as the plan was refined.

Only 3% of flights were removed from the September schedule in 2019 compared with the plan published in May that year.

The new Diio Schedule Snapshot web-based tool enables airlines and airports to track changes to the flights being scheduled at different points in time. It provides much more detail on schedule changes than has been done in the past.

“In today's environment where travel restrictions and vaccination programs are significantly impacting flight schedules, airlines have had to adapt and issue changes to their schedules frequently and much closer to the day of departure. The traditional methods used to analyze demand need to be more dynamic,” said Kevin O’Toole, Chief Strategy Officer at Cirium.

“Using Diio Schedules Snapshot, airlines and airports can understand schedule changes over time, optimize future schedules, build stronger models for planning and revenue management, and optimize yield through trend analysis.”

The analysis of the major US airlines evidences the radical shift in the summer flight schedule and the impact that the pandemic has had on the variance in airline planning year-over-year.

Understanding and comparing changes to the published flight schedule over time as it gets closer to actual departure, enables analysts to stay ahead of the curve, and provides new insights for planning and revenue management.

Reviewing historical data by publication date also provides insights on airline and airport strategies in an uncertain world.

Diio Schedule Snapshot is part of the unrivaled Cirium Diio suite of products for airline planning. The suite includes Diio Mi, SRS AnalyserTM, Cirium Scenario Planner, and Diio Traffic and Fares.

The new tool integrates with Cirium Diio Mi or SRS Analyser and is the first of many more new tools in the Cirium pipeline to help airlines optimize their schedules and find new revenue opportunities.

More information on Diio Schedule Snapshot can be found at https://cirium.com/products/views/diio-schedule-snapshot

-End-

For further information please visit https://www.cirium.com and follow Cirium updates via LinkedIn and Twitter.

About Cirium

Cirium brings together powerful data and analytics to keep the world moving. Delivering insight, built from decades of experience in the sector, enabling travel companies, aircraft manufacturers, airports, airlines and financial institutions, among others, to make logical and informed decisions which shape the future of travel, growing revenues and enhancing customer experiences. Cirium is part of RELX, a global provider of information-based analytics and decision tools for professional and business customers. The shares of RELX PLC are traded on the London, Amsterdam and New York Stock Exchanges using the following ticker symbols: London: REL; Amsterdam: REN; New York: RELX.

To view this piece of content from cts.businesswire.com, please give your consent at the top of this page.

Contact information

For media enquiries please contact:

Mike Arnot, Juliett Alpha via cirium@juliettalpha.com

or the Cirium media team at media@cirium.com

About Business Wire

For more than 50 years, Business Wire has been the global leader in press release distribution and regulatory disclosure.

Subscribe to releases from Business Wire

Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.

Latest releases from Business Wire

iQmetrix to Deliver 2026 Telecom Industry Address and Product Announcements, Unveiling the Next Wave of Intelligent Commerce14.9.2026 20:40:00 EEST | Press release

iQmetrix, the global provider of Intelligent Commerce Operating Systems for telecom, today opened registration for the 2026 Telecom Industry Address and Product Announcements, taking place Wednesday, October 28, 2026. For the first time in the event's history, iQmetrix will run two dedicated virtual sessions: one built specifically for European audiences, alongside its long-running North American event. Both are free to attend. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260914992633/en/ Now in its seventh year, the Industry Address has become the telecom channel's annual checkpoint: an unfiltered read on where the market is heading, delivered by a company that sits at the intersection of telcos, retailers, and the partners who serve them. The 2026 edition draws on a year of research and direct conversations across international markets. "We spend the year listening — to telcos, to retailers, to the partners building alon

The Estée Lauder Companies Announces Partnership with Profound to Expand AI Visibility Across Its Global Brand Portfolio14.9.2026 19:32:00 EEST | Press release

The Estée Lauder Companies Inc. (NYSE: EL) today announced a global strategic partnership with Profound, the category-defining AI marketing platform, advancing its ambition to be prestige beauty’s leader in AI-native discovery. The partnership will provide the company with visibility into how its full portfolio of brands is represented across leading generative AI platforms, as well as opportunities to optimize that representation. This partnership establishes the company as the first in prestige beauty to deploy Profound’s capabilities globally across the company’s full portfolio and operationalize Generative Engine Optimization (GEO) and AI marketing at scale. As consumers increasingly turn to ChatGPT, Gemini, and other AI assistants to discover products, compare recommendations, and seek personalized beauty advice before a purchase, The Estée Lauder Companies is partnering with Profound to define the next era of beauty discovery. This partnership will equip the company with a unifie

AMAALA Yacht Club Opens, Putting the Red Sea on the Global Yachting Map14.9.2026 19:00:00 EEST | Press release

Red Sea Global (RSG), the regenerative tourism developer, has announced that AMAALA Yacht Club has officially begun operations, marking a major milestone in establishing the Saudi Red Sea as a new global destination for luxury yachting, sailing and marine tourism. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260914160771/en/ AMAALA Yacht Club, the new luxury yachting destination on Saudi Arabia’s Red Sea coast. Nestled within AMAALA Marina Village, the AMAALA Yacht Club is now welcoming founding members and visiting yachts to moor and explore the destination. Located approximately 2,000 nautical miles from Monaco, the club provides a new winter destination for the world’s luxury sailing community, which traditionally migrates from the Mediterranean to the Caribbean or Indian Ocean from October. Positioned closer to the Mediterranean than the Caribbean, AMAALA offers an attractive winter cruising hub and a strategic gateway

Behind the Stage Lights: How Students Learned to Trust Their Voices with Doha Debates14.9.2026 16:40:00 EEST | Press release

During high school years in Model United Nations, Dahlia Al-Ansari learned to argue on behalf of a country she was assigned to represent. But when Doha Debates invited her to join a town hall debate in Toronto this July, she faced an unfamiliar challenge: sharing her own beliefs about a timely issue. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260914150232/en/ Students from Qatar, Canada and Mexico during their visit to the University of Toronto as part of the Doha Debates Town Hall experience in Canada. (Photo: AETOSWire) An 18-year-old biological sciences student at Carnegie Mellon University in Qatar, Al-Ansari hadn’t traveled to defend a predetermined position. Instead, she discovered that she was there to think critically, express her own viewpoint and remain open to diverse perspectives. This shift required her to navigate uncharted waters, but “I’m happy that it did,” she says. “It’s showing me the importance of sp

Matt Shafer Joins Golub Capital as Head of Golub Equity Continuation Partners14.9.2026 16:30:00 EEST | Press release

Golub Capital (“the Firm”) today announced the appointment of Matt Shafer as Managing Director and Head of the Firm’s GP-led private equity secondaries strategy, Golub Equity Continuation Partners (“GECP”). In this role, he will be responsible for leading the continued growth and development of the strategy and helping expand the Firm’s equity investment capabilities. Matt will work closely with Greg Cashman, Vice Chair and Co-Head of Golub Capital’s Sponsor Finance practice, to expand Golub Capital’s activity in this growing market. Shafer brings nearly three decades of global experience as an investor, financier and advisor working with private equity firms. He was most recently Head of Capital Solutions and U.S. Private Equity at Northleaf Capital Partners. In this role, Shafer helped lead the firm’s private equity investment activities, including secondaries, co‑investments and structured capital. Prior to Northleaf, he was Partner and Head of Americas Private Equity at Vision Capi

In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.

Visit our pressroom
World GlobeA line styled icon from Orion Icon Library.HiddenA line styled icon from Orion Icon Library.Eye