Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 4956 · Seattle (SEA) → Austin (AUS)
Sold by Southwest. Still flying: 48 of the last 56 days (Mon, Tue, Wed, Thu, Fri, Sun).
Arrives on time40%within 15 minutes, of 50 flights
Cancelled0.0%of scheduled flights
An hour or more late8%of flights that operated
When late, on average56 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Austin is 2 h ahead of Seattle).
- Leaves SEA
- 13:30
- Arrives AUS
- 19:40
- Flight time
- 4h 10m
- Days flown, last 8 weeks
- 48 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at SEA
All flights leaving Seattle (SEA) at 1–2 pm, wherever they’re going: 78% left within 15 minutes and 0.7% were cancelled (11,020 flights in the year). Other Southwest flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.