Flight DL1655
Delta Air Lines flight DL1655
Looking for DL1655 in the air…
Alerts at this flight's airports
Boston (BOS) to San Francisco (SFO)
Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 64 minutes. It was cancelled 1.8% of the time.
- On-time arrivals
- 66.1%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 64 min
- Flights arriving 15+ minutes late
- Flights tracked
- 337
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 65%
- Airline (crew, maintenance, cleaning) 21%
- Late-arriving aircraft 14%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Francisco (SFO) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 31% of the time, and when it is late the delay averages 70 minutes. It was cancelled 1.8% of the time.
- On-time arrivals
- 69.0%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 70 min
- Flights arriving 15+ minutes late
- Flights tracked
- 171
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 49%
- Airline (crew, maintenance, cleaning) 26%
- Air traffic control & airport 25%
- 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 | 67.4% | 46 |
| October 2025 | 70.8% | 50 |
| November 2025 | 73.2% | 44 |
| December 2025 | 88.9% | 36 |
| January 2026 | 84.0% | 27 |
| February 2026 | 70.4% | 28 |
| March 2026 | 77.4% | 31 |
| April 2026 | 63.0% | 46 |
| May 2026 | 46.4% | 56 |
| June 2026 | 42.0% | 50 |
| July 2026 | 76.6% | 49 |
| August 2026 | 68.9% | 45 |
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