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

Vertex to Acquire Crinetics Pharmaceuticals6.7.2026 23:04:00 EEST | Press release

Vertex Pharmaceuticals Incorporated (Nasdaq: VRTX) and Crinetics Pharmaceuticals, Inc. (Nasdaq: CRNX), a global pharmaceutical company focused on the discovery, development and commercialization of novel therapeutics for endocrine diseases, today announced that the companies have entered into a definitive agreement under which Vertex will acquire Crinetics for $85.00 per share in cash, for a total equity value of approximately $10.0 billion, or approximately $8.8 billion net of estimated cash acquired. The transaction was unanimously approved by both the Vertex and Crinetics Boards of Directors and is anticipated to close in the third quarter of 2026. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260706876183/en/ Crinetics’ marketed medicine, PALSONIFY® (paltusotine), received approval from the U.S. Food and Drug Administration (FDA) in September 2025. PALSONIFY was recently approved by the European Medicines Agency (EMA) a

Ciauru Wins the Second Edition of the Reply AI Music Contest, the International Competition Dedicated to Experimentation Across AI, Music and Live Performance6.7.2026 21:30:00 EEST | Press release

The second edition of the Reply AI Music Contest, the international competition created by Reply to explore new forms of expression combining artificial intelligence, music and live performance, concluded with the announcement of the winner on the Nova Stage powered by Reply during Kappa FuturFestival. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260706007611/en/ The second edition of the Reply AI Music Contest, the international competition created by Reply to explore new forms of expression combining artificial intelligence, music and live performance, concluded with the announcement of the winner on the Nova Stage powered by Reply during Kappa FuturFestival First place went to Ciauru, the stage name of Simone Privitera, an Italian multi-platinum DJ and producer who integrates artificial intelligence tools into a musical practice rooted in the contemporary electronic scene. With a career that has seen him collaborate wit

Rimini Street to Report Second Quarter 2026 Financial Results on July 30, 20266.7.2026 16:00:00 EEST | Press release

Rimini Street, Inc. (Nasdaq: RMNI), the Software Support and Agentic AI ERP Company™ and the leading third-party support provider for Oracle, SAP and VMware software, today announced it will report earnings after market close on July 30, 2026. The company will host a conference call and webcast on that date to discuss the second quarter 2026 results and the second half 2026 outlook at 5:00 p.m. Eastern / 2:00 p.m. Pacific time. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260706560476/en/ Rimini Street to Report Second Quarter 2026 Financial Results on July 30, 2026 A live webcast of the event will be available on Rimini Street’s Investor Relations site via the Rimini Street IR events link and directly via the webcast link. Dial-in participants can access the conference by dialing 1-800-836-8184. A replay of the webcast will be available for one year following the event. About Rimini Street, Inc. Rimini Street, Inc. (Nasda

Orion and Shilpa Medicare Expand Partnership to Develop and Supply Nivolumab Biosimilar for Europe6.7.2026 16:00:00 EEST | Press release

Shilpa Medicare Limited announced that its wholly owned subsidiary, Shilpa Biologicals Private Limited, has entered into a co-development and supply agreement with Orion Corporation for intravenous (IV) nivolumab biosimilar referencing one of the world’s most widely used cancer immunotherapies to widen patient access across Europe. Nivolumab helped usher in the era of immuno-oncology, transforming the outlook for patients with cancers such as melanoma and lung cancer. As the originator approaches loss of exclusivity in Europe, this partnership aims to put a high-quality, EU-GMP-manufactured nivolumab biosimilar within reach of more patients, reducing healthcare burden. In 2025, Nivolumab recorded sales of approximately USD4.1 billion (Source: IQVIA/IMS) Europe — underscoring the scale of the opportunity. Under the agreement, Orion will hold the exclusive rights to register, market, distribute and sell the nivolumab biosimilar across Europe. Shilpa Biologicals will lead product developm

No-Loss Trading Platform UpsideOnly Surpasses 100,000 Users Within Weeks of Launch6.7.2026 15:48:00 EEST | Press release

Perpetuals.com Ltd (Nasdaq: PDC), today announced that UpsideOnly, its risk-free trading and market prediction platform, has seen a surge in new user sign-ups, surpassing the important milestone of 100,000 traders within weeks of its launch on May 19. UpsideOnly lets users make predictions about where global equity, commodity, forex, and crypto markets are heading without ever placing a real trade themselves. Perpetuals uses its own capital to trade on the strongest signals identified by its proprietary AI. If those trades win, Perpetuals shares the profits with the users who helped generate the signal. If the trade doesn’t make money, users lose nothing. Reaching 100,000 users so quickly after launching is a reflection of the enormous demand for a platform that flips the traditional retail trading model on its head, with early platform data showing strong engagement across asset classes, geographies and user activity: Users from more than 180 different countries $38.4 billion in cumul

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