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
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/
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.
View source version on businesswire.com: https://www.businesswire.com/news/home/20211027005581/en/
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
Humanoids Dominate the Headlines, but Specialized Physical AI Captures Value in $18 Billion Market, Arthur D. Little’s Blue Shift Finds3.9.2026 13:07:00 EEST | Press release
Arthur D. Little’s (ADL) Blue Shift, its forward-looking institute exploring the impact of emerging technologies on business and society, today published I, Robot. Despite the hype around humanoid robots, this report finds they are still immature, compared to other areas of physical AI (autonomous and versatile robots that can perceive, decide, and act in the physical world). ADL analysis shows that humanoid robots only account for $2-3 billion of today’s overall $18 billion physical AI market. Many demonstrations are pre-programmed, remotely operated or even totally AI-generated. The study highlights that specialized physical AI offers the real opportunity for innovation and value in the short-to-medium term, and that businesses should take action now. The overall market could reach $60-$100 billion by 2030, thanks to drivers including labor shortages, shifting work preferences, increasing needs for operational resilience and productivity pressures. Countries and regions are competing
LITEON Announces Strategic Investment in Liquid Cooling Technology Company DCX3.9.2026 13:05:00 EEST | Press release
LITEON Technology (2301.TW) today announced a strategic investment in DCX POLSKA Sp. z o.o. (“DCX Liquid Cooling Systems”), a Warsaw, Poland-based provider of advanced liquid cooling systems for AI and High-Performance Computing (HPC) data centers. Upon closing of the transaction, LITEON will hold approximately 25% equity ownership in DCX Liquid Cooling Systems with a total transaction value of approximately US$176 million. The investment brings together DCX's deep expertise in liquid cooling technologies, including coolant distribution units (CDUs), facility coolant distribution units (FDUs), cold plates and immersion cooling systems, with LITEON's strengths in AI server power management, rack-level power delivery and 800VDC power architectures. Together, the two companies are positioned to deliver highly integrated power and thermal management solutions for the rapidly evolving AI infrastructure and next-generation high-density computing market. This press release features multimedia
The Untold Story ‘NEW YORK IN MONCLER’3.9.2026 13:00:00 EEST | Press release
The untold story of New York in Moncler began when snow met concrete. What could have melted instead endured, forging a love built on pioneering moments and strengthened with every chapter. They found each other, again and again. Decades later, their story is finally ready to be shared. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260903671495/en/ NEW YORK IN MONCLER MIDTOWN MOUNTAINS Revealed through one of the largest open-air public exhibitions the city has ever seen, New York in Monclerunveils the peak moments that capture the bond between New York and Moncler, transforming communal spaces across the city into a powerful retrospective gallery from September 9-13. New York in Moncleris a very public display of affection;large-scale photographs will showcase unforgettable experiences born from more than twenty years of close collaboration and cultural exchange. Unfolding in a city-wide takeover, the exhibition culminates
Chiesi Advances Its Carbon Minimal Inhaler Journey as European Submissions for Its Single Inhaler Triple Therapy (SITT) and ICS/LABA Combination Next-Generation Propellant pMDIs Are Validated3.9.2026 12:00:00 EEST | Press release
Chiesi Group, an international research-focused biopharmaceutical company and certified B Corp, today announces a further step in its Carbon Minimal Inhaler (CMI) journey with the validation of regulatory submissions in Europe for its SITT and ICS/LABA pMDIs. The start of regulatory assessment in Europe marks a significant step towards Chiesi’s transition to carbon minimal pMDIs across its respiratory portfolio, combining innovation with responsibility. This supports the Company’s broader ambition to reduce the environmental impact of respiratory care, while enabling a seamless transition for patients and healthcare professionals. In July 2026, the UK Medicines and Healthcare products Regulatory Agency (MHRA) approved Chiesi’s beclometasone pMDIs formulated with HFA-152a, marking the first UK approval of this next-generation propellant in a pressurised metered-dose inhaler. Chiesi’s pMDIs are transitioning to HFA-152a, a next-generation propellant classified as non-PFAS* and with low-G
Belkin Expands SoundForm Audio Lineup at IFA 2026, Bringing ANC and Everyday Listening Features to More Accessible Price Points3.9.2026 11:00:00 EEST | Press release
Belkin, a global leader in consumer electronics for over 40 years, today expanded its SoundForm by Belkin audio portfolio with three new products at IFA 2026: SoundForm Isolate, SoundForm Dot and SoundForm Play. The lineup brings features like active noise cancellation (ANC), long battery life and Bluetooth Multipoint connectivity to more accessible price points, with options designed for immersive listening, everyday value and older kids. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260903967750/en/ Belkin SoundForm Isolate Buds ANC worn in-ear Leading the new audio range, SoundForm Isolate combines Belkin's most powerful noise cancellation with a secure wing-tip fit, designed for listeners who want greater focus and immersion. SoundForm Dot brings ANC to a more compact and accessible form factor, with both ANC and non-ANC options for everyday listening. Rounding out the lineup, SoundForm Play is designed for kids ages 5
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
