WN855 AUS → MIA

Southwest Airlines · Austin, TX to Miami, FL · 36 flights observed, 2026-01-06 to 2026-03-04 · 1,103 mi

This flight runs much more reliably at some times of day than others — 96% on-time departing 9am–12pm vs. 50% departing 3–6pm.

WN855 covers more than one route in the data window — the stats below are for AUS → MIA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
86%
Median delay
-7 min
90th percentile
+21 min
Cancellation rate
3%

How often is WN855 on time?

Across 36 flights on AUS → MIA from 2026-01-06 to 2026-03-04, WN855 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +21 min or later. 3% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time3086%
16-30 min411%
31-60 min13%
61-120 min00%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-011694%-3 min
2026-021681%-3 min
2026-03367%-1 min

Performance by day of week

DayFlightsOn-time
Mon367%
Tue8100%
Wed989%
Thu5100%
Fri683%
SatNo data—
Sun450%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…