Apologies if this has been posted, I could not find any references to this when searching the forum.

In searching flights from SEA-JFK, I see Google Flights listing "Lie Flat seat" for a 737 plane.

Sat May 5th
7:40 AM – 4:10 PM
Seattle (SEA) – New York City (JFK)
Delta 1651 · First Class · Boeing 737
Lie flat seat

https://www.google.com/flights/#sear...;sc=b;a=DL;s=0

Seat map in delta.com does not show the lie flat seats, but it doesn't show it for me for the 757s either for some reason.

I'm curious if there is a interior modification that I am not aware of... I am a bit skeptical on taking a risk to book this particular flight vs. 757 that I know has the seats in some configurations.