I wonder why ORD is consistently at the bottom. Flight ops are down significantly from its peak, and

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Two DL hubs in each "best" list, and four UA hubs in each "worst" list (also a new DL hub -- LGA -- in the worst list for arrivals). Does this speak to the different scheduling practices at each carrier? That is, does DL build more wiggle room into their schedules? Or does it speak to other factors, like airspace congestion, weather conditions, etc?
3. Most notable are the number of UA hub airports that are on the bottom of the list. Is this due to UA not padding schedules as much as other carriers or merger integration issues? I realize some of UA 's hubs suffer from weather ( SFO ) or congestion ( EWR ), but I am surprised to see IAH so low. It is also interesting to note LAX , which is not as heavily dominated by UA , has much better on time performance.
I wonder why ORD is consistently at the bottom. Flight ops are down significantly from its peak, and even with 9L -27R online, it seems like there was really no improvement in the performance of the airfield overall. Maybe 10R-28L will bring a positive change.
Quoting kordcj ( Reply 6 ): I wonder why ORD is consistently at the bottom. Flight ops are down significantly from its peak, and even with 9L -27R online, nevada sports car rental it seems like there was really no improvement in the performance of the airfield overall. Maybe 10R-28L will bring a positive change.
Even with flight nevada sports car rental ops down, bad weather will always create delays and ORD often suffers miserable winter weather not to mention the occasional summer storm. Deicing is generally necessary in winter and almost always dings against on-time departures. MDW also seems to suffer this departure delay issue.
IAH did have to deal with weather issues in 2012, but nothing that I remember that was abnormal from most other summers. nevada sports car rental IAH is set up to run a large number of arrivals/departures however; the airport has to be managed in such a way that during departure back that overlap into arrivals nevada sports car rental landing west either 26L or 26R must be utilized for both arrivals and departures.
The normal operation they use is to segregate the departures from arrivals by departing the 15's or 33's and landing west, or landing east using 8L /R for arrivals and the 15's and 9 for departures. Runway 9 should be used for both landing and departure, but then you back up the 15's while the 9 lander is overlying the centerlines of the 15's.
Most certainly. I use to catch Delta's 10am LGA - ATL a lot. We would close out on time and push back from te gate within nevada sports car rental minutes of 1000 but still won't be rolling on T/O until about 1030 or 1040 due to the taxi time and traffic.
This is an airport thing far more than an airline one. All airlines pad as best they can, trying to optimize efficiency of their fleet and passenger connectivity. nevada sports car rental While some may do more so than others, the different is overwhelmed nevada sports car rental by airport factors by far.
You are correct about runway capacity and weather, but the facility is sometimes responsible for late arrivals. It isn't uncommon at LAX to wait several nevada sports car rental minutes for an alleyway to clear before you can taxi in to the gate. Then you have some gates that are tow in only gates because the alleyway is so tight. Don't get me wrong, LAX is overall a very good set up, and in my opinion the easiest major hub airport to operate at from a pilot standpoint, but there are indeed times that airlines take delays due to the facility.
Quoting nevada sports car rental dartland ( Reply 12 ): This is an airport thing far more than an airline one. All airlines pad as best they can, trying to optimize efficiency of their fleet and passenger connectivity. While some may do more so than others, the different is overwhelmed by airport factors by far. .
I think that largely depends on how much of the airport is controlled by the hub carrier. If 70% of an airport's ops are controlled by one carrier, then that airline's nevada sports car rental ops can have a heavy influence on the airport's total numbers.
With that said, I think there are 4 main factors that will affect the numbers: congestion in the air space surrounding the airport (ie. northeast corridor), weather, airport specific operations, hub carrier's operations (padding schedules).
Quoting HPRamper ( Reply 7 ): Even with flight ops down, bad weather will always create delays and ORD often suffers miserable winter weather not to mention the occasional summer storm. Deicing is generally necessary in winter and almost always dings against on-time departures. MDW also seems to suffer this departure delay issue.
MSP had an extremely mild winter 2011-2012. There was very little snow last winter. March 2012 saw a 3 week string of 70-80 degree nevada sports car rental days in the Upper Midwest and shattered all kinds of records. nevada sports car rental MSP likely nevada sports car rental scored so high since the winter was non-existant, and they also generally don't get as many thunderstorms as parts farther south.
ORD by nature is generally good, but when hit with a stationary or slow-moving line of thunderstorms will grind to a halt. There were a few occasions where this did happen last summer. ORD is so massive in scale its no wonder it falls more middle-of-the-road. nevada sports car rental The delays at ORD are way down from years past. You also have a lot of volume from ORD headed into congested and delay-prone nevada sports car rental East Coast airports.
At school one of my teachers nevada sports car rental is a tower controller at MDW and according to them they take great pride in being able to keep as many arrivals on time as possible, nevada sports car rental and he blames the city mostly for the departures.
Quoting ORDTLV2414 ( Reply 17 ): this isnt really fair because you have cities like Chicago, where weather can shut down the airport nevada sports car rental for days, compared with DFW which has a pretty temperate climate. just saying.
Also a place like DFW and Northern TX in spring and summer gets pummeled by thunderstorms both around the field and in the distance that create all types of ATC difficulties and delays. So place like DFW is not a cake walk either.
Quoting ORDTLV2414 ( Reply 17 ): this isnt really fair because you have cities nevada sports car rental like Chicago, where weather can shut down the airport for days, compared with DFW which has a pretty temperate climate. just saying.
It has nothing to do with the airlines themselves...for the most part. I worked for CO and then UA after the merger process for a while. You have to take in to account nevada sports car rental the amount of congestion nevada sports car rental at these airports on a good day. Throw in the slightest amount of weather even if its only for a period of 30 minutes, and the blank hits the fan. I wont even go into the complexity behind EWR , JFK and LGA airspace issues on a clear skies day haha. 99% of the time mother nature is to blame.
If LAX has an on-time arrival record of about 80%, and SFO is about 70%, it looks like a small difference. But at LAX the delay may be 10-15 minutes caused by ground nevada sports car rental traffic, but sometimes SFO can be measured in hours caused by gate holds due to weather.
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