Flight Reliability
DL 537 · Delta Air Lines
Atlanta → Washington (ATL–DCA)
60
A Little Dicey
WanderNerd Reliability Score
- 69%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 3.6%
- Cancelled
- 1 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
DL 537 arrived on time 80% of the time on Tuesdays and just 58% on Fridays. That gap is worth planning around.
Lagging the Delta Air Lines network.
DL 537 arrived on time 69% of the time, versus 81% across the Delta Air Lines network.
Keep a backup plan handy.
DL 537 was cancelled 3.6% of the time. Typical for U.S. flights is around 1–2%.
Recent months have been rougher.
DL 537 arrived on time 63% of the time over the last three months in the data, compared with 72% in the three months before that.
The breakdown
- Mon77%(51 flights)
- Tue80%(51 flights)
- Wed63%(51 flights)
- Thu63%(49 flights)
- Fri58%(50 flights)
- Sat76%(49 flights)
- Sun64%(50 flights)
61%
May
Jun 55% → May 61% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 55% | 29 |
| July 2025 | 54% | 28 |
| August 2025 | 63% | 30 |
| September 2025 | 87% | 30 |
| October 2025 | 97% | 31 |
| November 2025 | 64% | 28 |
| December 2025 | 59% | 29 |
| January 2026 | 82% | 28 |
| February 2026 | 74% | 27 |
| March 2026 | 53% | 30 |
| April 2026 | 73% | 30 |
| May 2026 | 61% | 31 |
- Departures on time
- 74%
- Diverted
- 0%
- Flights flown
- 351
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 364 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.