Flight DL1203
Delta Air Lines flight DL1203
Looking for DL1203 in the air…
Portland (PDX) to Salt Lake City (SLC)
Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 61 minutes. It was cancelled 3.2% of the time.
- On-time arrivals
- 91.3%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 251
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 78%
- Airline (crew, maintenance, cleaning) 19%
- Air traffic control & airport 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Salt Lake City (SLC) to Portland (PDX)
Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 61 minutes. It was cancelled 3.2% of the time.
- On-time arrivals
- 90.5%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 251
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 90%
- Late-arriving aircraft 8%
- Air traffic control & airport 2%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Miami (MIA) to New York (JFK)
Historically, this flight arrives 15+ minutes late 40% of the time, and when it is late the delay averages 63 minutes. It was cancelled 1.9% of the time.
- On-time arrivals
- 60.4%
- Less than 15 minutes late
- Cancelled
- 1.9%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 108
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 61%
- Air traffic control & airport 23%
- Airline (crew, maintenance, cleaning) 10%
- Extreme weather 5%
- 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 | 66.7% | 30 |
| October 2025 | 61.3% | 31 |
| November 2025 | 57.1% | 28 |
| December 2025 | 71.4% | 37 |
| January 2026 | 86.2% | 60 |
| February 2026 | 92.7% | 56 |
| March 2026 | 90.0% | 62 |
| April 2026 | 89.3% | 60 |
| May 2026 | 90.3% | 62 |
| June 2026 | 87.9% | 60 |
| July 2026 | 93.1% | 62 |
| August 2026 | 98.3% | 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