Flight DL1553
Delta Air Lines flight DL1553
Looking for DL1553 in the air…
Salt Lake City (SLC) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 48 minutes. It was cancelled 0.3% of the time.
- On-time arrivals
- 78.9%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 48 min
- Flights arriving 15+ minutes late
- Flights tracked
- 324
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 45%
- Air traffic control & airport 31%
- Extreme weather 16%
- Late-arriving aircraft 8%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Salt Lake City (SLC)
Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 65 minutes. It was cancelled 1.2% of the time.
- On-time arrivals
- 79.2%
- Less than 15 minutes late
- Cancelled
- 1.2%
- Of scheduled flights
- Average delay when late
- 65 min
- Flights arriving 15+ minutes late
- Flights tracked
- 253
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 62%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 10%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Minneapolis (MSP) to Memphis (MEM)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 125 minutes. It was cancelled 6.5% of the time.
- On-time arrivals
- 89.7%
- Less than 15 minutes late
- Cancelled
- 6.5%
- Of scheduled flights
- Average delay when late
- 125 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Extreme weather 71%
- Air traffic control & airport 24%
- Airline (crew, maintenance, cleaning) 5%
- Late-arriving aircraft 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 | 81.7% | 60 |
| October 2025 | 73.5% | 34 |
| November 2025 | 93.1% | 29 |
| December 2025 | 81.0% | 42 |
| January 2026 | 80.6% | 62 |
| February 2026 | 82.7% | 56 |
| March 2026 | 90.9% | 35 |
| April 2026 | 87.0% | 46 |
| May 2026 | 87.1% | 62 |
| June 2026 | 72.9% | 60 |
| July 2026 | 83.3% | 60 |
| August 2026 | 53.2% | 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