Flight Reliability
DL 5855 · Delta Air Lines
Boston → New York (BOS–LGA)91% of its flights flew this route. The rest (PIT–DTW, JFK–IND) are included in these numbers.
29
Bring Snacks
WanderNerd Reliability Score
- 61%
- Arrive within 15 minutes
- 26 min
- Average arrival delay
- 7.9%
- Cancelled
- 4 min
- Median arrival delay
Based on 303 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
DL 5855 departing between 3–6 PM arrived on time 75% of the time, versus 59% between 6–9 PM.
Sunday scaries are real for this one.
DL 5855 arrived on time 64% of the time on Wednesdays. On Sundays: 55%.
Well behind the BOS–LGA route.
DL 5855 arrived on time 61% of the time, versus 78% across the BOS–LGA route.
Well behind the Delta Air Lines network.
DL 5855 arrived on time 61% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon59%(46 flights)
- Tue62%(47 flights)
- Wed64%(45 flights)
- Thu58%(45 flights)
- Fri64%(45 flights)
- Sat—(4 flights)
- Sun55%(47 flights)
- 3–6 PM75%(24 flights)
- 6–9 PM59%(245 flights)
- 9 PM–12 AM60%(10 flights)
73%
May
Jun 58% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 58% | 26 |
| July 2025 | 55% | 22 |
| August 2025 | 88% | 25 |
| September 2025 | 38% | 24 |
| October 2025 | 50% | 24 |
| November 2025 | 65% | 20 |
| December 2025 | 69% | 16 |
| January 2026 | 68% | 22 |
| February 2026 | 64% | 22 |
| March 2026 | 41% | 22 |
| April 2026 | 58% | 26 |
| May 2026 | 73% | 30 |
- Departures on time
- 56%
- Diverted
- 0%
- Flights flown
- 279
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 303 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.