About 1 in 3 DL 5641 flights from Cleveland arrived 15+ minutes late, diverted or cancelled over the past year (34%); 4.6% were cancelled. The typical flight landed 6 minutes early.
DL 5641: CLE → BOS
Scheduled to leave Cleveland at 3:00 p.m. local time, operated by Republic Airways as YX 5641. Over the past year it arrived on time 66% of the time (304 flights), better than other DL flights on the route at that hour (60%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Cleveland to Boston (100% of days). Delta Air Lines's last CLE–BOS flight was cancelled 4.5% of the time, against 1.7% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:05 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 49 | 63% |
| Tuesday | 50 | 64% |
| Wednesday | 50 | 62% |
| Thursday | 49 | 65% |
| Friday | 48 | 75% |
| Saturday | 13 | — |
| Sunday | 45 | 62% |
Why it was late
All flights CLE → BOS · Connecting off DL 5641? Check the risk
DL 5641: BOS → CLE
Scheduled to leave Boston at 2:55 p.m. local time, operated by Republic Airways as YX 5641. Over the past year it arrived on time 81% of the time (263 flights), in line with other DL flights on the route at that hour (79%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 41 | 83% |
| Tuesday | 41 | 80% |
| Wednesday | 41 | 83% |
| Thursday | 40 | 83% |
| Friday | 39 | 77% |
| Saturday | 21 | 90% |
| Sunday | 40 | 75% |
Why it was late
All flights BOS → CLE · Connecting off DL 5641? Check the risk
Questions
How often is DL 5641 from CLE to BOS late?
Delta Air Lines 5641 from Cleveland, OH to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 34% of 304 scheduled flights between September 2025 and August 2026. 4.6% were cancelled.
How often is DL 5641 from BOS to CLE late?
Delta Air Lines 5641 from Boston, MA to Cleveland, OH arrived 15 or more minutes late, was diverted or was cancelled on 19% of 263 scheduled flights between September 2025 and August 2026. 1.5% 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.