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

Mobix Labs Signs Definitive Agreement to Acquire Vision Aerial, Accelerating Global Drone Platform for National Security and Aerial Intelligence24.7.2026 14:00:00 EEST | Press release

Mobix Labs, Inc. (Nasdaq: MOBX) today announced that it has signed a definitive agreement to acquire Vision Aerial, Inc., a U.S.-based designer and manufacturer of American-built, National Defense Authorization Act (NDAA)-compliant unmanned aerial systems. The definitive agreement moves the transaction beyond the previously announced letter of intent and represents a major step toward closing an acquisition that would expand Mobix Labs into one of the world’s most important technology growth markets: secure drones, autonomous aerial systems and aerial intelligence for national security, critical infrastructure, energy, public safety, industrial inspection and government operations. Vision Aerial’s customers and end-users include the U.S. Air Force, U.S. Navy, government agencies, energy and utility operators, research institutions and other organizations requiring performance, reliability and trusted supply chains. Its drones support national security and public-safety operations, sear

Enhertu ® Plus Pertuzumab Recommended for Approval in the EU by CHMP as First-Line Treatment for Patients with HER2 Positive Metastatic Breast Cancer24.7.2026 14:00:00 EEST | Press release

Enhertu® (trastuzumab deruxtecan) in combination with pertuzumab has been recommended for approval in the European Union (EU) for the first-line treatment of adult patients with unresectable or metastatic HER2 positive (immunohistochemistry [IHC] 3+ or in-situ hybridization [ISH]+) breast cancer. Enhertu is a specifically engineered HER2 directed DXd antibody drug conjugate (ADC) discovered by Daiichi Sankyo (TSE: 4568) and being jointly developed and commercialized by Daiichi Sankyo and AstraZeneca (LSE/STO/NYSE: AZN). The Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) based its positive opinion on results from theDESTINY-Breast09 phase 3 trialpresented at the 2025 American Society of Clinical Oncology Annual Meeting and subsequently published in The New England Journal of Medicine. The recommendation will now be reviewed by the European Commission, which has the authority to grant marketing authorizations for medicines in the EU. In DESTI

SLB Announces Second-Quarter 2026 Results24.7.2026 13:50:00 EEST | Press release

SLB (NYSE: SLB) today announced results for the second-quarter 2026. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260722694386/en/ The exterior of the SLB headquarters in Houston, Texas. Second-Quarter Results(Stated in millions, except per share amounts)Three Months EndedChangeJun. 30, 2026Mar. 31, 2026Jun. 30, 2025SequentialYear-on-yearRevenue $8,972 $8,721 $8,546 3% 5% Income before taxes - GAAP basis $1,018 $956 $1,285 6% -21% Income before taxes margin - GAAP basis 11.3% 11.0% 15.0% 38 bps -369 bps Net income attributable to SLB - GAAP basis $786 $752 $1,014 5% -22% Diluted EPS - GAAP basis $0.52 $0.50 $0.74 4% -30% Adjusted EBITDA* $1,899 $1,773 $2,051 7% -7% Adjusted EBITDA margin* 21.2% 20.3% 24.0% 83 bps -284 bps Pretax segment operating income* $1,404 $1,321 $1,584 6% -11% Pretax segment operating margin* 15.6% 15.2% 18.5% 49 bps -289 bps Net income attributable to SLB, excluding charges & credits* $833 $783 $1,0

NIQ Expands GenAI Capabilities Across gfknewron, Turning Trusted Intelligence into Decisions Faster24.7.2026 13:30:00 EEST | Press release

NIQ (NYSE: NIQ), a leader in consumer intelligence, today announced the expansion of AI-powered Smart Insights across its gfknewron® platform. By bringing together markets and categories into a single view, gfknewron enables businesses to transform complex market, consumer and supply chain data into clear, actionable intelligence quickly. The latest enhancements help users identify trends, opportunities and performance drivers more quickly, reducing the time required to analyze large datasets and accelerating confident decision-making across teams. As brands and retailers face growing pressure to respond quickly to changing consumer behavior and market dynamics, the ability to unlock meaningful insights from increasingly rich datasets has become a significant competitive advantage. As AI is only as effective as the intelligence behind it, Smart Insights helps businesses realize the full value of NIQ's trusted market intelligence by automatically surfacing the trends, opportunities and

Thales to Strengthen Romania’s Airspace Protection With Twelve Ground Master 200 MM/A Radars24.7.2026 11:05:00 EEST | Press release

In a context of growing collaboration between European nations to bolster collective security, the Romanian General Directorate for Armaments has just signed a landmark agreement with France’s Direction Générale de l’Armement (DGA) to acquire twelve Thales Ground Master 200 Multi-Mission All-in-one (GM200 MM/A) radars. This government-to-government agreement, funded under the European Union’s SAFE programme, underlines the high level of partnership between France and Romania. The first delivery is expected in 2027. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260724603527/en/ The Romanian General Directorate for Armaments and the French Direction Générale de l’Armement (DGA – the French defence procurement agency) have signed an agreement to supply twelve Thales GM200 Multi-Mission All-in-one (GM200MM/A) radars to protect the Romanian airspace. The GM200 MM/A is a combat-proven medium-range 4D AESA radar, already deployed

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