About 1 in 3 DL 1638 flights from New York arrived 15+ minutes late, diverted or cancelled over the past year (31%); 4.8% were cancelled. The typical flight landed 7 minutes early.
DL 1638: JFK → PBI
Scheduled to leave New York at 4:20 p.m. local time. Over the past year it arrived on time 69% of the time (333 flights), better than other DL flights on the route at that hour (65%). Last seen in the data Jul 31, 2026.
Usually Delta Air Lines's last flight of the day from New York to West Palm Beach (100% of days). Delta Air Lines's last JFK–PBI flight was cancelled 4.8% of the time, against 4.5% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 7:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 48 | 65% |
| Tuesday | 48 | 65% |
| Wednesday | 48 | 79% |
| Thursday | 47 | 74% |
| Friday | 48 | 73% |
| Saturday | 47 | 74% |
| Sunday | 47 | 55% |
Why it was late
All flights JFK → PBI · Connecting off DL 1638? Check the risk
DL 1638: PBI → JFK
Scheduled to leave West Palm Beach at 7:59 p.m. local time. Over the past year it arrived on time 51% of the time (162 flights), worse than other DL flights on the route at that hour (56%). Last seen in the data Jul 31, 2026.
Usually Delta Air Lines's last flight of the day from West Palm Beach to New York (100% of days). Delta Air Lines's last PBI–JFK flight was cancelled 5.1% of the time, against 4.2% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 11:59 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 22 | 55% |
| Tuesday | 22 | 41% |
| Wednesday | 22 | 45% |
| Thursday | 24 | 67% |
| Friday | 24 | 50% |
| Saturday | 24 | 50% |
| Sunday | 24 | 50% |
Why it was late
All flights PBI → JFK · Connecting off DL 1638? Check the risk
Questions
How often is DL 1638 from JFK to PBI late?
Delta Air Lines 1638 from New York, NY to West Palm Beach/Palm Beach, FL arrived 15 or more minutes late, was diverted or was cancelled on 31% of 333 scheduled flights between September 2025 and August 2026. 4.8% were cancelled.
How often is DL 1638 from PBI to JFK late?
Delta Air Lines 1638 from West Palm Beach/Palm Beach, FL to New York, NY arrived 15 or more minutes late, was diverted or was cancelled on 49% of 162 scheduled flights between September 2025 and August 2026. 6.8% 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.