About 1 in 7 DL 5805 flights from Boston arrived 15+ minutes late, diverted or cancelled over the past year (15%); 0.0% were cancelled. The typical flight landed 12 minutes early.
DL 5805: BOS → PHL
Scheduled to leave Boston at 10:50 a.m. local time, operated by Republic Airways as YX 5805. Over the past year it arrived on time 85% of the time (191 flights), in line with other DL flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 33 | 82% |
| Tuesday | 33 | 85% |
| Wednesday | 33 | 91% |
| Thursday | 34 | 79% |
| Friday | 33 | 79% |
| Saturday | 22 | 100% |
| Sunday | 3 | — |
Why it was late
All flights BOS → PHL · Connecting off DL 5805? Check the risk
DL 5805: PHL → BOS
Scheduled to leave Philadelphia at 1:10 p.m. local time, operated by Republic Airways as YX 5805. Over the past year it arrived on time 68% of the time (190 flights), in line with other DL flights on the route at that hour (70%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 33 | 64% |
| Tuesday | 33 | 64% |
| Wednesday | 33 | 76% |
| Thursday | 33 | 64% |
| Friday | 34 | 62% |
| Saturday | 21 | 90% |
| Sunday | 3 | — |
Why it was late
All flights PHL → BOS · Connecting off DL 5805? Check the risk
Questions
How often is DL 5805 from BOS to PHL late?
Delta Air Lines 5805 from Boston, MA to Philadelphia, PA arrived 15 or more minutes late, was diverted or was cancelled on 15% of 191 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is DL 5805 from PHL to BOS late?
Delta Air Lines 5805 from Philadelphia, PA to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 32% of 190 scheduled flights between September 2025 and August 2026. 1.6% 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.