Flight Reliability
DL 4704 · Delta Air Lines
Detroit → Pittsburgh (DTW–PIT)90% of its flights flew this route. The rest (ATL–MOB, MOB–ATL) are included in these numbers.
83
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.3%
- Cancelled
- 7 min early
- Median arrival delay
Based on 77 historical flights. Data through May 2026.
What the data says
Tuesdays have been rough.
DL 4704 arrived on time 100% of the time on Thursdays and just 55% on Tuesdays. That gap is worth planning around.
A bit ahead of the DTW–PIT route.
DL 4704 arrived on time 80% of the time, versus 77% across the DTW–PIT route.
The breakdown
- Mon82%(11 flights)
- Tue55%(11 flights)
- Wed82%(11 flights)
- Thu100%(11 flights)
- Fri—(9 flights)
- Sat92%(13 flights)
- Sun60%(10 flights)
- 6–9 AM79%(68 flights)
- 12–3 PM—(1 flights)
- 3–6 PM—(7 flights)
44%
Dec
Oct 96% → Dec 44% on time
| Month | On-time percentage | Flights |
|---|---|---|
| October 2025 | 96% | 25 |
| November 2025 | 85% | 27 |
| December 2025 | 44% | 16 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 76
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 77 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.