Flight profile · Delta Air Lines
DL831
Seattle (SEA) to Austin (AUS) · scheduled 11:15 AM – 5:50 PM
How DL831 performs
646 operations, 2024-06-07 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 646 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL831 | 78.0% | 1.24% | -7 min | 7.4% | 646 |
| Delta Air Lines on SEA → AUS | 81.2% | 0.68% | -7 min | 6.7% | 2,656 |
| All SEA → AUS flights | 77.6% | 0.65% | -3 min | 5.5% | 6,188 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL831 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| AUS→SEA Austin to Seattle | 2024-07-08 – 2026-06-30 | 322 | 74.4% |
| MCO→BOS Orlando to Boston | 2025-01-06 – 2025-03-08 | 62 | — |
| JFK→LAS New York to Las Vegas | 2024-05-07 – 2024-06-06 | 31 | — |
| SFO→JFK San Francisco to New York | 2024-04-15 – 2024-05-06 | 19 | — |
| MSP→TUS Minneapolis to Tucson | 2024-04-09 – 2024-04-14 | 6 | — |
| TUS→MSP Tucson to Minneapolis | 2024-04-09 – 2024-04-14 | 6 | — |
| MSP→LAX Minneapolis to Los Angeles | 2023-07-01 – 2024-04-08 | 221 | 86.4% |
| PHX→DTW Phoenix to Detroit | 2024-01-08 – 2024-03-09 | 62 | — |
Because the same number has served different journeys, the statistics above describe only the route DL831 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 646 records of DL831 operating SEA → AUS, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.