Delta Adds Seattle – Philadelphia From May 2026

Published at 1400PDT / 2100GMT 22OCT25

Delta in May 2026 plans to add new domestic route at Seattle, where the airline schedules Seattle – Philadelphia nonstop service. The Skyteam member plans to operate 1 daily flight from 07MAY26, with Airbus A321neo.

DL1114 SEA2150 – 0605+1PHL 32Q D
DL2092 PHL0705 – 1004SEA 32Q D

From the same date the airline will also expand frequencies on selected domestic routes:
Seattle – Boston eff 07MAY26 Increase from 3 to 4 daily, A321neo
Seattle – San Jose CA eff 07MAY26 Increase from 4 to 5 daily, Embraer E175