WN1257 BWI → PHX

Southwest Airlines · Baltimore, MD to Phoenix, AZ · 24 flights observed, 2026-04-09 to 2026-06-01 · 1,999 mi

This flight's reliability varies a lot by day of week — 100% on-time on Fridays vs. 63% on Thursdays.

WN1257 covers more than one route in the data window — the stats below are for BWI → PHX, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
83%
Median delay
-9 min
90th percentile
+31 min
Cancellation rate
0%

How often is WN1257 on time?

Across 24 flights on BWI → PHX from 2026-04-09 to 2026-06-01, WN1257 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +31 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2083%
16-30 min14%
31-60 min313%
61-120 min00%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-041070%+10 min
2026-051392%-9 min
2026-061100%-21 min

Performance by day of week

DayFlightsOn-time
Mon888%
TueNo data—
WedNo data—
Thu863%
Fri8100%
SatNo data—
SunNo data—

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