Flight Reliability
DL 2105 · Delta Air Lines
Kansas City → Seattle (MCI–SEA)
82
Pretty Reliable
WanderNerd Reliability Score
- 85%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.9%
- Cancelled
- 10 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 2105 arrived on time 89% of the time on Tuesdays. On Fridays: 78%.
A bit ahead of the Delta Air Lines network.
DL 2105 arrived on time 85% of the time, versus 81% across the Delta Air Lines network.
Trending in the right direction.
DL 2105 arrived on time 86% of the time over the last three months in the data, compared with 74% in the three months before that.
The breakdown
- Mon88%(51 flights)
- Tue89%(52 flights)
- Wed86%(50 flights)
- Thu82%(51 flights)
- Fri78%(50 flights)
- Sat86%(49 flights)
- Sun86%(51 flights)
83%
May
Jun 90% → May 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 29 |
| July 2025 | 87% | 31 |
| August 2025 | 87% | 31 |
| September 2025 | 93% | 29 |
| October 2025 | 90% | 30 |
| November 2025 | 93% | 29 |
| December 2025 | 63% | 30 |
| January 2026 | 73% | 30 |
| February 2026 | 85% | 27 |
| March 2026 | 86% | 29 |
| April 2026 | 90% | 29 |
| May 2026 | 83% | 30 |
- Departures on time
- 90%
- Diverted
- 0.8%
- Flights flown
- 354
- 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.