Flight Reliability
DL 5709 · Delta Air Lines
New York → Washington (LGA–DCA)
47
Bring Snacks
WanderNerd Reliability Score
- 61%
- Arrive within 15 minutes
- 20 min
- Average arrival delay
- 4.3%
- Cancelled
- 4 min
- Median arrival delay
Based on 349 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
DL 5709 arrived on time 88% of the time on Saturdays and just 49% on Fridays. That gap is worth planning around.
Lagging the LGA–DCA route.
DL 5709 arrived on time 61% of the time, versus 69% across the LGA–DCA route.
Well behind the Delta Air Lines network.
DL 5709 arrived on time 61% of the time, versus 81% across the Delta Air Lines network.
Keep a backup plan handy.
DL 5709 was cancelled 4.3% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon59%(46 flights)
- Tue54%(48 flights)
- Wed58%(50 flights)
- Thu64%(44 flights)
- Fri49%(49 flights)
- Sat88%(49 flights)
- Sun58%(48 flights)
- 12–3 PM61%(332 flights)
- 3–6 PM—(2 flights)
65%
May
Jun 54% → May 65% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 54% | 28 |
| July 2025 | 62% | 29 |
| August 2025 | 73% | 30 |
| September 2025 | 77% | 30 |
| October 2025 | 73% | 30 |
| November 2025 | 31% | 29 |
| December 2025 | 42% | 19 |
| January 2026 | 68% | 25 |
| February 2026 | 54% | 26 |
| March 2026 | 48% | 27 |
| April 2026 | 80% | 30 |
| May 2026 | 65% | 31 |
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 334
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 349 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.