UA1400
United Airlines flight 1400 — Seattle (SEA) to Los Angeles (LAX)
On time
79%
Avg delay
~73 min
Cancelled
1.3%
UA1400 is fairly reliable, though delays happen. About 79% of departures arrive on time. When delays happen, the most common cause is late-arriving aircraft.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 58% | 0.0% | 168 min |
| 2026-06 | 48% | 4.2% | 71 min |
| 2026-06 | 53% | 0.0% | 128 min |
| 2026-05 | 73% | 0.0% | 107 min |
| 2026-05 | 43% | 0.0% | 84 min |
| 2026-05 | 74% | 0.0% | 66 min |
| 2026-04 | 90% | 0.0% | 63 min |
| 2026-04 | 76% | 0.0% | 70 min |
| 2026-03 | 75% | 0.0% | 93 min |
| 2026-03 | 74% | 0.0% | 115 min |
| 2026-03 | 50% | 0.0% | 68 min |
| 2026-02 | 71% | 0.0% | 41 min |
Top delay cause
late-arriving aircraft
Based on 2,157 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.