WN1277 MDW → MIA

Southwest Airlines · Chicago, IL to Miami, FL · 33 flights observed, 2026-03-05 to 2026-04-06 · 1,182 mi

This flight's reliability varies a lot by day of week — 80% on-time on Mondays vs. 20% on Sundays.

WN1277 covers more than one route in the data window — the stats below are for MDW → MIA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
61%
Median delay
+14 min
90th percentile
+89 min
Cancellation rate
0%

How often is WN1277 on time?

Across 33 flights on MDW → MIA from 2026-03-05 to 2026-04-06, WN1277 arrived within 15 minutes of schedule 61% of the time. The median arrival delay was +14 min, and the worst 10% of flights arrived +89 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2061%
16-30 min618%
31-60 min26%
61-120 min26%
2+ hrs39%

Performance by month

MonthFlightsOn-timeAvg delay
2026-032759%+41 min
2026-04667%+6 min

Performance by day of week

DayFlightsOn-time
Mon580%
Tue4100%
Wed450%
Thu560%
Fri580%
Sat540%
Sun520%

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