My flight to MCI-ATL is currently delayed over 5 hours due to mechanical but no cancellation (good job Delta). Luckily I got the last F seat on the last flight of the night which gets in a couple hours earlier. Unfortunately, I missed my connection to ORF but I got a seat on the first flight tomorrow morning which will get me in early enough for my client meeting. Delta staff handled everything perfectly (but I do have to get a hotel voucher in ATL so we'll see how that goes).

Add another flight not cancelled. Kudos!

Another example...not being critical...DL 663 from Monday eve 5/20 ATL-TUL delayed by massive convective activity now airborne Tues AM 5/21 over 10 hours late.

Given all the weather waivers we had this winter, I find this hard to believe.

Bob H

Just as a case-in-point on whether padding schedules is "reasonable" - take DL1429 from ATL->SJC this morning. Due to unseasonably strong jetstream over the West Coast today and a line of thunderstorms across the Great Plains, the plane pushed on time (well, a minute late, but close enough), didn't have an abnormally long taxi (14 minutes), and landed nearly half an hour late simply because of weather. This is why flights are padded .

I just wanted to leave this FlightAware cancellation list here in light of the weather in the Northeast today.

American Cancellations: 435 - 12% of total scheduled mainline flights
Southwest Cancellations: 427 - 9% of total scheduled mainline flights
United Cancellations: 42 - 1% of total scheduled mainline flights
Delta Cancellations: 3 - .1% of total scheduled mainline flights

Mind you, don't ask about anyone's regional airlines (including Delta's). It's ugly.

AA and WN have it bad but they also had bad weather in Dallas so for yesterday I might give them a pass (but not overall).

Yes, I know there was bad weather in Dallas - including a 2-hour groundstop. Still, to put that 435 (now 437) number in perspective, American only does 520 mainline flights out of DFW on a regular early summer Wednesday. Admittedly you can double-count a bit (each departure is also an arrival), but still, that's an insane number of cancellations.

When adjusting for departures at ATL vs. DFW, the mainline cancellation numbers are higher than Delta got even during its famous April 2017 meltdown (admittedly that dragged on for a couple of days so a bit worse). And yet no one blinks an eye - on American, it's just accepted that they may cancel (non-proactively) 10% of flights the due to some bad WX.

It is days per year, and how soon in the year they hit that mark. The person you quoted makes perfect sense in how the answered who they quoted. It is 100 year to date, not 100 in a row.

I didn't get it at first either then I read the article.

That said, Delta has racked up some pretty impressive no-cancellation streaks (asterisks about "12 hour delayed" flights aside). Some fortuitous weather patterns, some really good luck, and I am sure some very costly decisions they wouldn't normally make to keep the streak alive put Delta at over 35 consecutive days of no mainline cancellations back in November of 2017. A true almost six-sigma-like statistical anomaly, I don't know if we'll ever see that again. That said, since 2017, Delta has done a good job of lowering the number of regional cancellations - "brand perfect" days were less of a focus back then.

The effort placed forth in preventing the cancellation of DL1096 (SEA to KOA) and DL 2845 (KOA to SEA) was unheard of, it took a 757 ferry flight from LAX so that they can run the flight 11pm that day. Originally, the flight was scheduled for 4pm ish departure. Id think most airlines would simply cancel.

Jiburi

You know as well as I do that there are significantly different contexts between these two threads and the circumstances associated with them.

I'm not sure how else to phrase it, but Delta didn't have 100 days in a row of no cancellations. That is what I was trying to clarify for the person I was responding to. You are correct though, if an airline operates for let's say at least a year they will hopefully have at least 100 cancel free days. The Delta press release was announcing how quickly they reached that number. Hopefully this helps clears up your "HUH?".

You'd hope, but American sure as heck doesn't manage 100 no-cancel days a year. I don't think United does either, but they're probably close.

Interestingly, Delta says they are at 31 consecutive days with no cancellations as of Wednesday: https://news.delta.com/delta-flew-mo...e-cancellation. Maybe they'll break the 37 day record from 2017 after all. The cancellations I referenced above on Wednesday were diversions and 99XX flights which they don't count as cancellations.