About 1 in 8 DL 5845 flights from Boston arrived 15+ minutes late, diverted or cancelled over the past year (13%); 2.6% were cancelled. The typical flight landed 14 minutes early.
DL 5845: BOS → PHL
Scheduled to leave Boston at 6:50 a.m. local time, operated by Republic Airways as YX 5845. Over the past year it arrived on time 87% of the time (345 flights), worse than other DL flights on the route at that hour (90%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 77% |
| Tuesday | 52 | 90% |
| Wednesday | 52 | 94% |
| Thursday | 51 | 90% |
| Friday | 51 | 86% |
| Saturday | 35 | 86% |
| Sunday | 51 | 82% |
Why it was late
All flights BOS → PHL · Connecting off DL 5845? Check the risk
DL 5845: PHL → BOS
Scheduled to leave Philadelphia at 9:30 a.m. local time, operated by Republic Airways as YX 5845. Over the past year it arrived on time 87% of the time (330 flights), in line with other DL flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 52 | 81% |
| Tuesday | 50 | 90% |
| Wednesday | 48 | 90% |
| Thursday | 47 | 87% |
| Friday | 49 | 90% |
| Saturday | 34 | 82% |
| Sunday | 50 | 88% |
Why it was late
All flights PHL → BOS · Connecting off DL 5845? Check the risk
Questions
How often is DL 5845 from BOS to PHL late?
Delta Air Lines 5845 from Boston, MA to Philadelphia, PA arrived 15 or more minutes late, was diverted or was cancelled on 13% of 345 scheduled flights between September 2025 and August 2026. 2.6% were cancelled.
How often is DL 5845 from PHL to BOS late?
Delta Air Lines 5845 from Philadelphia, PA to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 13% of 330 scheduled flights between September 2025 and August 2026. 3.3% 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.