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SMU Senior Design Project: Southwest Airlines

SMU Senior Design Project: Southwest Airlines. Spring 2010 EMIS 4395-001 . May 2010. Team On-Time Performance. Stacy Moskowitz Brandon Cabello Courtney Guenard. Agenda. What makes them happy? Southwest: The Big Picture Is your line late? Say ‘No’ to late airports! Recommendations.

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SMU Senior Design Project: Southwest Airlines

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  1. SMU Senior Design Project: Southwest Airlines Spring 2010 EMIS 4395-001 May 2010

  2. Team On-Time Performance • Stacy Moskowitz • Brandon Cabello • Courtney Guenard

  3. Agenda • What makes them happy? • Southwest: The Big Picture • Is your line late? • Say ‘No’ to late airports! • Recommendations

  4. WHAT makes them happy?

  5. We partnered with Southwest Airlines optimization group to tackle on-time performance DFW ORD LAX Turn time Turn time • Southwest uses a flight schedule to indicate a whole day’s worth of flying by line • They wanted our assistance to improve their forecast of the on-time performance of entire scheduled line • Historically, on-time performance has been measured by a leg-by-leg basis • Southwest provided our group with historical turn and block time data for all flights from January 2009 Sample: Line Schedule

  6. Southwest: THE BIG PICTURE

  7. Today, Southwest operates 537 aircrafts between 68 cities Image Source: Southwest Airline Systems Map 2008

  8. Based on our data, here we show the top 10 airports by departure On-time performance at these airports is crucial from a customer service and cost perspective Source: Jan 09 Flight Data; Southwest Airlines Analysis by: B Cabello, S Moskowitz, C Guenard

  9. Next, we segmented the data into legs and lines Southwest’s Flights Overview Southwest’s overall count of lines and legs These two segments were analyzed for on-time performance

  10. As a whole, 56% of Southwest’s flights arrive on-time to their destination Southwest’s On-time Performance (by Leg) Southwest’s overall count of on-time and late flights Southwest’s On-time Performance (by Leg) Southwest’s overall on-time and late flights as a % Source: Jan 09 Flight Data; Southwest Airlines Analysis by: B Cabello, S Moskowitz, C Guenard

  11. Here we measured lateness by line (full day’s worth of flying) Southwest’s Lateness Count Southwest’s overall count of on-time and late flights Southwest’s Lateness % Southwest’s overall on-time and late flights a %

  12. After researching lateness, we also measured a lines ability to recover Southwest’s Recovery Performance Southwest’s overall recovery % for all lines

  13. Is your line late?

  14. Our research shows over 3200 lines experience at least one-late leg Southwest’s Lateness Count Southwest’s overall count of on-time and late lines This analysis led us to explore our next area of investigation; airports = delayed departure = on-time arrival resulting in recovery

  15. SAY ‘NO’ TO LATE AIRPORTS

  16. We began this study by counting the number of on-time and late arrivals by airport Count of Late/On-time Arrivals by Airport Probability Late Flights by Airport

  17. Statistical analysis of lateness by airport shows a leftward skew Airport Lateness Frequency Box Plot Airport Lateness Frequency Histogram outliers outliers average

  18. This chart shows the 20 best and worst airports Airports listed in red are one of Southwest’s Top 10 Airports (by volume)

  19. Recommendations

  20. To improve Southwest flight schedules, we would like to make the following recommendations

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