Flight Reliability
DL 652 · Delta Air Lines
Seattle → Atlanta (SEA–ATL)92% of its flights flew this route. The rest (DFW–LGA, LGA–DFW) are included in these numbers.
- 81%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 1.6%
- Cancelled
- 3 min early
- Median arrival delay
Based on 380 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
DL 652 departing between 9 PM–12 AM arrived on time 81% of the time, versus 67% between 9 AM–12 PM.
Friday is doing you no favors.
DL 652 arrived on time 91% of the time on Saturdays and just 73% on Fridays. That gap is worth planning around.
Recent months have been rougher.
DL 652 arrived on time 79% of the time over the last three months in the data, compared with 91% in the three months before that.
The breakdown
- Mon83%(53 flights)
- Tue85%(54 flights)
- Wed82%(54 flights)
- Thu74%(54 flights)
- Fri73%(51 flights)
- Sat91%(54 flights)
- Sun77%(53 flights)
- 9 AM–12 PM67%(15 flights)
- 3–6 PM79%(14 flights)
- 9 PM–12 AM81%(344 flights)
Jun 59% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 59% | 29 |
| July 2025 | 52% | 31 |
| August 2025 | 77% | 31 |
| September 2025 | 80% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 93% | 29 |
| December 2025 | 83% | 40 |
| January 2026 | 94% | 35 |
| February 2026 | 96% | 28 |
| March 2026 | 64% | 28 |
| April 2026 | 90% | 30 |
| May 2026 | 84% | 31 |
- Departures on time
- 78%
- Diverted
- 0.3%
- Flights flown
- 373
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 380 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.