If they happen to have another sale on that date in that cabin, perhaps they can make the reasonable guess that inventory was the same. But in general, historical inventory is not stored, so nobody (including DL) knows what inventory was that day.

On a differentially-fared route (most First-marketed routes), there is an obvious floor in the fare differential, although the actual difference could have been more if premium inventory was tighter than Economy inventory. However, DL will not always compensate even that much. They are not trying that hard when they figure it.

IME, they do follow through with the payment although it takes time. You may or may not be happy about the amount.

Update I have just received an email from Delta's refund department. They are going to compensate 331.65 EUR per passenger to my credit card. So this roughly matches my calculation based on EC261. Overall I have to say that DL handled the situation really well. The $500 eCredit + the actual compensation payment were all initiated by DL without me asking for it. Really impressive - especially considered how other airlines are handling similar situations.

My spouse and I had our FCO-JFK flight canceled this past Sunday due to a missing pilot for the JFK-FCO leg. The Delta rep at 1:30 AM ET was very helpful, and we were rebooked to a MXP-JFK flight the following morning. He said to also file for reimbursement for transportation, meals, and the hotel because it was Delta’s fault. We already received a response to our reimbursement request, and I wanted to run it past the knowledgeable folks here:

Hotel at MXP - partial reimbursement less €0.59 (that’s right, all but 59 cents)
Meals - partial reimbursement of €90 (assuming they use a per diem)
Train to MXP - denied in full

Is transportation to an alternate airport outside of Delta’s policy? I remember a past flight where Delta reimbursed a rental car because they rebooked us to a different airport. Maybe arrivals are different than departure airport alternatives?

Update on this. I resubmitted the expenses using the generic customer service form. While they still denied the transportation, they did offer €600 each for EC261 compensation. That more than covered our cost for the train, so we’re satisfied with the result. We didn’t even mention the regulation, Delta offered it proactively along with other compensation for the canceled flight.

Had a lousy experience in ATL tonight where we got a (wonderful) phone agent to list us standby at the last minute for an earlier flight after clearing CBP very quickly. We arrived at the gate about T-17, there were still a few seats available, and we were showing 1 and 2 on the standby list. The very rude GA told us we were "too late" and promptly cleared non-revs into the seats, and when I asked why we didn't get cleared while those lower on the list did he said "I can clear anyone I want" and "it doesn't matter if they're non-revs, they were expecting the seats and it wouldn't be fair to clear you now."

Fired off a quick note to CS naming and shaming the agent and got an email two hours later for 5k miles for each of us - given that we really didn't lose anything I'll happily take it, mostly filed it in hopes that it would get back to that agent/be a retraining opportunity - not only was he wrong, he was just incredibly rude for no reason... a simple "I'm sorry but you're too late" and I probably would have rolled my eyes and headed for the SC.

6k miles for non responsive IFE and no WiFi for 80% of the flight on SEA-CDG (9hrs)

CANCELLED SEA - AMS flight #142 January 3, 2023

Posting for friends who were supposed to be on this flight. Arrived over 2 hours before flight was to leave at 2:30. Flight delayed to 3:30. Flight delayed to 4:30. Flight delayed to 5:30. Flight delayed to 6:30.
Flight finally cancelled at 6:15.

Reason was NO PILOT.

You'd think in 4 hours they would have been able to fly a pilot in from somewhere.

Lost a day of their holiday. Hung out in the airport for 7 hours. Had to rebook hotel, car rental, flight. Serious mental and physical time suck.

They were offered a meal voucher at 5. After flight was cancelled they were offered a hotel in the "area" of the airport but not close. They chose to go home. Asked to be put on the same flight the following day but it was full. Had to take a 5:30 am flight with a 3 hour layover in Minneapolis rather than the nonstop they were originally booked on. Earlier, when they knew where were going to miss their connection KLM flight, they asked if Delta could book them on a later flight but Delta said they could not, even though it was the same PNR.

They were proactively given 15,000 miles. with 6k for no movies, 15,000 doesn't sound like enough? I realize it's a first world problem BUT should they ask for more for the huge inconvenience and it clearly being Delta's 'fault'? Travel these days is not for the faint of heart. Thanks for any advice . . .

On a recent JFK-AMS D1 flight, the flight attendant gave me 5,000 miles merely because they were not stocked with a particular whisky (Whistle Pig) that the menu indicates is only available on select flights to begin with. Completely unnecessary, but I appreciated the gesture.

21K total is very generous compared to what DL has been handing out recently. I would be very happy with that result.

And DL was doing them a favor by giving them a hotel "in the area" rather than close to the airport. I would be very concerned for my safety at any hotels close to the airport. I know DL has put some pax up in hotels in Bellevue in the past - a 20 minute drive is well worth it to be in a clean, safe place.

Received a $25 delta credit (good for 12 months) for non-functioning air vent and no PDB, I'd prefer sky peso's.....at least they won't expire. Anybody else receiving $ credits in lieu of miles?

I recently got 2500 SM for something similar.

ATL-HND no wifi or entertainment on a $12k J ticket. I’m hoping there will be some compensation for this 910am departure all day flight.

Anyone have any past experience?

What would someone get for canceled HNL-JFK paid D1 and rescheduled to Connection in comfort plus? Asking for a friend. (Friend no status)

I was denied pre-boarding in SDQ because I was not in a wheelchair. (back story twisted my ankle pretty bad can't stand for long or put too much weight on it so I tried to pre-board.

I got 8000 miles less than 24 hours after submitting a complaint.

Little back story twisted my ankle the 28th on the 30th and 31st I had a flight RDU > ATL and then ATL > SDQ, at both RDU and ATL I informed gate agents that I needed to preboard, and they said I didn't even have to tell them I just pre-board. The ATL Agent went as far as to say the policy is they aren't even supposed to ask what issue or disability I may have.

However, on my way back from SDQ to JFK last night I attempted to pre-board and was denied because I didn't look disabled according to the GA and was not in a wheelchair and the GA even asked what my disability was. I told her I didn't have to tell her but that I twisted my ankle and she said I'd still have to wait for my zone to be called I was in 1st, so it didn't matter as soon as she denied me 1st was called. But another person wasn't so lucky, and she had an obvious knee brace on.

I shot an email to delta an hour after landing, and I'd say less than 12 hours later a phone call saying that the SDQ policy was incorrect, and they would address it and gave me 8000 miles. I didn't ask for compensation I did ask for a clarification of the policy and if SDQ was incorrect to please inform them of the actual policy so that itse enforced correctly at SDQ.

For those who don't know SDQ is a miracle flight airport, and people who may need preboarding are being denied because they decide not to use a wheelchair.

I suspect anything resembling an Air Carrier Access Act issue is one area where complaints get fast-tracked to ‘resolution’ these days. Delta is pretty careful about anything they might have to report or get reported to the feds.