About 1 in 3 DL 1439 flights from Boston arrived 15+ minutes late, diverted or cancelled over the past year (30%); 2.6% were cancelled. The typical flight landed 1 minutes early.
DL 1439: BOS → TPA
Scheduled to leave Boston at 3:40 p.m. local time. Over the past year it arrived on time 70% of the time (345 flights), in line with other DL flights on the route at that hour (71%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 64% |
| Tuesday | 52 | 69% |
| Wednesday | 52 | 88% |
| Thursday | 51 | 75% |
| Friday | 52 | 63% |
| Saturday | 36 | 69% |
| Sunday | 49 | 57% |
Why it was late
All flights BOS → TPA · Connecting off DL 1439? Check the risk
DL 1439: TPA → BOS
Scheduled to leave Tampa at 7:59 p.m. local time. Over the past year it arrived on time 66% of the time (313 flights), in line with other DL flights on the route at that hour (63%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Tampa to Boston (100% of days). Delta Air Lines's last TPA–BOS flight was cancelled 3.3% of the time, against 2.0% 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 | 49 | 57% |
| Tuesday | 48 | 73% |
| Wednesday | 48 | 85% |
| Thursday | 48 | 67% |
| Friday | 47 | 64% |
| Saturday | 27 | 67% |
| Sunday | 46 | 46% |
Why it was late
All flights TPA → BOS · Connecting off DL 1439? Check the risk
Questions
How often is DL 1439 from BOS to TPA late?
Delta Air Lines 1439 from Boston, MA to Tampa, FL arrived 15 or more minutes late, was diverted or was cancelled on 30% of 345 scheduled flights between September 2025 and August 2026. 2.6% were cancelled.
How often is DL 1439 from TPA to BOS late?
Delta Air Lines 1439 from Tampa, FL to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 35% of 313 scheduled flights between September 2025 and August 2026. 3.2% 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.