Delta launched service on their new A350s back in Q4 of 2017 and with it came their new “Flagship” cabins: the “Delta One suite” and “Premium Select”. The new cabin is a proper premium economy cabin, similar to what the European or Asian carriers have been offering for years. According to Delta, the seats feature 75% more recline and 8″ more legroom than traditional economy.

Here are a few shots of the Premium Select cabin:

Currently, Delta is operating their 11 A350s on the following routes:

• Detroit-DTW <–> Tokyo-NRT
• Detroit-DTW <–> Seoul-ICN
• Detroit-DTW <–> Beijing-PEK
• Detroit-DTW <–> Shanghai-PVG
• Detroit-DTW <–> Amsterdam-AMS
• Atlanta-ATL <–> Seoul-ICN
• Los Angeles-LAX <–> Shanghai-PVG (starts July 2018)

It’s been a nice feature that when booking the A350 routes in Premium Select, you’ll automatically get First Class on the domestic legs. For example:

But, just as a warning, be careful as this isn’t always the case. When I was researching flights for an upcoming trip, I found that on many of the return trips, the domestic connecting flight booked into “Delta Comfort+”:

I thought that possibly First Class was fully booked but there were plenty of seats:

And, to make it worse, Delta Medallion members aren’t even eligible to upgrade:

I observed this same issue out of other cities as well:

No idea what is causing this, maybe a booking class issue? Or possibly Delta isn’t planning on continuing this offering? Either way, double check before you book!