Delta is really good at right sizing aircrafts for flights, but terrible in notifying its customers. I've had many aircraft swaps on Delta within 1 week of travel, all circumstances with a 757 swap to 737 within 1 week of travel.

Delta does so many itinerary changes that I frequently have to call Delta to confirm the changes 10-20 times on flights booked more than 6 months out. Within 6 month, probably 5-10 times. Sometimes, the only change is the flight number, on other occasions, it's just a time change of about 5 to 15 minutes. I don't know why Delta.com doesn't adapt the nwa.com policy of confirming the schedule changes capabilities online........ why bother the agent when online resources can do this.....

Jiburi