Southwest Airlines
WN4251San Francisco to Denver
Southwest Airlines flight WN4251 flies from San Francisco (SFO) to Denver (DEN), 1,553 km. Over August 2025 to July 2026 it usually arrives about 14 minutes late: 70% of 227 flights arrived within 15 minutes of schedule and 0.9% were cancelled (US Department of Transportation data).
On-time record, last 12 months
70%
on time (within 15 min)
20%
more than 30 min late
0.9%
cancelled
+14 min
average arrival vs schedule
Every operation of WN4251, August 2025 to July 2026: 227 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as WN4251
- San Francisco (SFO) to Denver (DEN)60 flights
- Denver (DEN) to Little Rock (LIT)58 flights
- Seattle Tacoma (SEA) to Dallas Love Field (DAL)57 flights
- San Diego (SAN) to San Jose (SJC)33 flights
- Tampa (TPA) to Baltimore (BWI)17 flights
- Chicago Midway (MDW) to Fort Lauderdale Hollywood (FLL)1 flights
- Dallas Love Field (DAL) to Pensacola (PNS)1 flights
Other flights from San Francisco to Denver
More about San Francisco (SFO) and Denver (DEN).
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