Flight Reliability
DL 2989 · Delta Air Lines
Detroit → Hartford (DTW–BDL)
76
Usually Fine
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 1.4%
- Cancelled
- 6 min early
- Median arrival delay
Based on 357 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 2989 arrived on time 82% of the time on Thursdays and just 66% on Sundays. That gap is worth planning around.
Lagging the DTW–BDL route.
DL 2989 arrived on time 75% of the time, versus 84% across the DTW–BDL route.
A bit behind the Delta Air Lines network.
DL 2989 arrived on time 75% of the time, versus 81% across the Delta Air Lines network.
Trending in the right direction.
DL 2989 arrived on time 85% of the time over the last three months in the data, compared with 65% in the three months before that.
The breakdown
- Mon76%(50 flights)
- Tue72%(50 flights)
- Wed77%(51 flights)
- Thu82%(49 flights)
- Fri76%(49 flights)
- Sat77%(52 flights)
- Sun66%(50 flights)
84%
May
Jun 63% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 27 |
| July 2025 | 62% | 26 |
| August 2025 | 81% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 81% | 31 |
| November 2025 | 68% | 28 |
| December 2025 | 50% | 30 |
| January 2026 | 67% | 30 |
| February 2026 | 77% | 26 |
| March 2026 | 84% | 31 |
| April 2026 | 87% | 30 |
| May 2026 | 84% | 31 |
- Departures on time
- 79%
- Diverted
- 0.3%
- Flights flown
- 351
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 357 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.