Who flies it
Flights sold as Delta Air Lines, by the airline that operates them.
| Operated by | Flights | On time | Cancelled | Typical arrival |
|---|---|---|---|---|
| Delta Air Lines | 1,039,517 | 80% | 1.7% | −8 min |
| SkyWest | 258,021 | 83% | 1.1% | −10 min |
| Endeavor Air | 252,900 | 74% | 3.7% | −9 min |
| Republic Airways | 103,835 | 74% | 4.7% | −9 min |
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for Delta Air Lines flights: when a flight was late, it was under 45 minutes late 51% of the time. About 1 in 14 flights landed an hour or more late, and 1 in 66 three hours or more; 2.1% were cancelled outright.
- On time or early79%
- 15–30 min late6.3%
- 30–60 min late5.4%
- 1–2 hours late4.1%
- 2–3 hours late1.5%
- 3+ hours late1.5%
- Diverted0.2%
- Cancelled2.1%
Share of all 1,654,272 scheduled flights, past 12 months, by arrival time against schedule.
By departure hour
Month by month
Share of flights on time, by month (hover a point for cancellations)
Why flights were late
Airline (crew, maintenance, ops) 45%Late inbound plane 28%Air traffic & airport (NAS) 21%Severe weather 7%
Most reliable routes
| Route | Flights | On time |
|---|---|---|
| HLN → SLC | 725 | 95% |
| SLC → HLN | 725 | 95% |
| EKO → SLC | 579 | 95% |
| TWF → SLC | 859 | 95% |
| GJT → SLC | 584 | 95% |
| SLC → GJT | 584 | 94% |
| OGG → SEA | 365 | 94% |
| BOI → LAX | 623 | 94% |
| SLC → CDC | 631 | 94% |
| CDC → SLC | 631 | 94% |
| OAK → SLC | 1,074 | 94% |
| SBA → SLC | 1,062 | 93% |
| PSC → SLC | 1,177 | 93% |
| SJC → SLC | 1,586 | 93% |
| ABQ → SLC | 1,149 | 93% |
| SUN → SLC | 1,078 | 93% |
| PIH → SLC | 479 | 93% |
| SLC → LWS | 365 | 93% |
| SGU → SLC | 1,727 | 93% |
| SLC → GTF | 1,072 | 93% |
Least reliable routes
| Route | Flights | On time |
|---|---|---|
| RDU → DCA | 1,002 | 55% |
| IAD → JFK | 713 | 57% |
| LGA → HSV | 384 | 57% |
| LAX → SFO | 2,373 | 60% |
| LGA → CAE | 665 | 61% |
| LGA → LEX | 392 | 61% |
| SLC → SFO | 1,716 | 61% |
| BOS → ORD | 1,319 | 61% |
| CVG → DCA | 998 | 62% |
| MSY → BOS | 372 | 62% |
| LGA → ORD | 2,771 | 62% |
| DCA → LGA | 2,321 | 62% |
| JFK → MCI | 367 | 62% |
| SEA → SFO | 1,749 | 62% |
| LGA → DSM | 459 | 62% |
| MIA → SEA | 366 | 62% |
| JFK → DCA | 1,075 | 62% |
| LGA → CHA | 586 | 62% |
| LGA → CHO | 662 | 63% |
| JFK → DFW | 373 | 64% |
Routes listed have at least 365 Delta Air Lines flights in the past year. Compare all airlines · Method.