Flight DL2121
Delta Air Lines flight DL2121
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Alerts at this flight's airports
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Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
Minneapolis (MSP) to San Diego (SAN)
Historically, this flight arrives 15+ minutes late 18% of the time, and when it is late the delay averages 46 minutes. It was cancelled 0.9% of the time.
- On-time arrivals
- 82.2%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 46 min
- Flights arriving 15+ minutes late
- Flights tracked
- 341
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 46%
- Airline (crew, maintenance, cleaning) 43%
- Extreme weather 8%
- Late-arriving aircraft 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Diego (SAN) to Minneapolis (MSP)
Historically, this flight arrives 15+ minutes late 5% of the time, and when it is late the delay averages 61 minutes. It was cancelled 0.9% of the time.
- On-time arrivals
- 94.8%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 117
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 44%
- Late-arriving aircraft 42%
- Air traffic control & airport 13%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Atlanta (ATL) to Kansas City (MCI)
Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 92 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 92 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 78%
- Air traffic control & airport 18%
- Late-arriving aircraft 4%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Kansas City (MCI) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 17% of the time, and when it is late the delay averages 127 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 127 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 51%
- Airline (crew, maintenance, cleaning) 49%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
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Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 83.3% | 30 |
| October 2025 | 83.9% | 31 |
| November 2025 | 86.7% | 30 |
| December 2025 | 67.7% | 31 |
| January 2026 | 64.5% | 31 |
| February 2026 | 84.4% | 45 |
| March 2026 | 89.2% | 38 |
| April 2026 | 83.3% | 30 |
| May 2026 | 94.6% | 56 |
| June 2026 | 84.7% | 60 |
| July 2026 | 86.7% | 62 |
| August 2026 | 95.2% | 62 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data