About 1 in 3 DL 863 flights from New York arrived 15+ minutes late, diverted or cancelled over the past year (31%); 2.1% were cancelled. The typical flight landed 2 minutes early.
DL 863: JFK → SLC
Scheduled to leave New York at 6:40 p.m. local time. Over the past year it arrived on time 69% of the time (329 flights), in line with other DL flights on the route at that hour (69%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from New York to Salt Lake City (100% of days). Delta Air Lines's last JFK–SLC flight was cancelled 2.2% of the time, against 1.9% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 49 | 76% |
| Tuesday | 47 | 70% |
| Wednesday | 47 | 70% |
| Thursday | 46 | 67% |
| Friday | 46 | 61% |
| Saturday | 47 | 79% |
| Sunday | 47 | 57% |
Why it was late
All flights JFK → SLC · Connecting off DL 863? Check the risk
Questions
How often is DL 863 from JFK to SLC late?
Delta Air Lines 863 from New York, NY to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 31% of 329 scheduled flights between September 2025 and August 2026. 2.1% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.