Southwest Airlines

WN4257San Francisco to Denver

Name: Southwest Airlines WN4257 San Francisco to Denver: on-time record
Creator: TripStow
License: https://tripstow.com/notices

Southwest Airlines flight WN4257 flies from San Francisco (SFO) to Denver (DEN), 1,553 km. Over August 2025 to July 2026 it usually arrives about 13 minutes late: 70% of 157 flights arrived within 15 minutes of schedule and 1.3% were cancelled (US Department of Transportation data).

On-time record, last 12 months

70%

on time (within 15 min)

19%

more than 30 min late

1.3%

cancelled

+13 min

average arrival vs schedule

Every operation of WN4257, August 2025 to July 2026: 157 flights. Source: US Bureau of Transportation Statistics, public domain.

Routes flown as WN4257

San Francisco (SFO) to Denver (DEN)50 flights
San Diego (SAN) to San Jose (SJC)35 flights
Dallas Love Field (DAL) to Kansas City (MCI)28 flights
San Antonio (SAT) to Phoenix Sky Harbor (PHX)15 flights
Tampa (TPA) to Indianapolis (IND)13 flights
Las Vegas (LAS) to New Orleans (MSY)8 flights
Kansas City (MCI) to Austin Bergstrom (AUS)4 flights
Phoenix Sky Harbor (PHX) to Oakland (OAK)4 flights

Other flights from San Francisco to Denver

UA1023 UA1214 UA1217 UA1222 UA1230 UA1233 UA1256 UA1311 UA1315 UA1317 UA1333 UA1374

More about San Francisco (SFO) and Denver (DEN).

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