WN3439 MKE → DCA

Southwest Airlines · Milwaukee, WI to Washington, DC · 50 flights observed, 2026-04-07 to 2026-06-03 · 634 mi

This flight's reliability varies a lot by day of week — 75% on-time on Mondays vs. 25% on Sundays.

WN3439 covers more than one route in the data window — the stats below are for MKE → DCA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
55%
Median delay
+14 min
90th percentile
+55 min
Cancellation rate
0%

How often is WN3439 on time?

Across 50 flights on MKE → DCA from 2026-04-07 to 2026-06-03, WN3439 arrived within 15 minutes of schedule 55% of the time. The median arrival delay was +14 min, and the worst 10% of flights arrived +55 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2755%
16-30 min1327%
31-60 min510%
61-120 min36%
2+ hrs12%

Performance by month

MonthFlightsOn-timeAvg delay
2026-042143%+20 min
2026-052560%+17 min
2026-063100%+1 min

Performance by day of week

DayFlightsOn-time
Mon875%
Tue944%
Wed875%
Thu850%
Fri863%
SatNo data—
Sun825%

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