About 1 in 3 DL 5657 flights from Boston arrived 15+ minutes late, diverted or cancelled over the past year (30%); 1.6% were cancelled. The typical flight landed 6 minutes early.
DL 5657: BOS → JAX
Scheduled to leave Boston at 3:35 p.m. local time, operated by Republic Airways as YX 5657. Over the past year it arrived on time 70% of the time (191 flights), in line with other DL flights on the route at that hour (69%). Last seen in the data Aug 30, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 27 | 70% |
| Tuesday | 27 | 78% |
| Wednesday | 27 | 85% |
| Thursday | 27 | 63% |
| Friday | 27 | 67% |
| Saturday | 28 | 71% |
| Sunday | 28 | 57% |
Why it was late
All flights BOS → JAX · Connecting off DL 5657? Check the risk
DL 5657: JAX → BOS
Scheduled to leave Jacksonville at 7:25 p.m. local time, operated by Republic Airways as YX 5657. Over the past year it arrived on time 67% of the time (161 flights), in line with other DL flights on the route at that hour (67%). Last seen in the data Aug 30, 2026.
Usually Delta Air Lines's last flight of the day from Jacksonville to Boston (100% of days). Delta Air Lines's last JAX–BOS flight was cancelled 1.9% of the time, against 1.3% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:45 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 27 | 74% |
| Tuesday | 27 | 74% |
| Wednesday | 25 | 68% |
| Thursday | 25 | 48% |
| Friday | 27 | 78% |
| Saturday | 3 | — |
| Sunday | 27 | 63% |
Why it was late
All flights JAX → BOS · Connecting off DL 5657? Check the risk
Questions
How often is DL 5657 from BOS to JAX late?
Delta Air Lines 5657 from Boston, MA to Jacksonville, FL arrived 15 or more minutes late, was diverted or was cancelled on 30% of 191 scheduled flights between September 2025 and August 2026. 1.6% were cancelled.
How often is DL 5657 from JAX to BOS late?
Delta Air Lines 5657 from Jacksonville, FL to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 33% of 161 scheduled flights between September 2025 and August 2026. 1.9% 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.