Historical on-time performance
San Francisco to Baltimore
2,457 miData through Dec 2025Source: US DOT · BTS
Flights on SFO–BWI arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 846 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time84%Medianon timep9020 minCancel0.5%Flights662
- Southwest AirlinesOn-time67%Medianon timep9040 minCancel0.0%Flights184
Why flights run late
Delay causes
- Airline28%
- Weather0%
- Air traffic (NAS)19%
- Late aircraft53%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SFO → BWI
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 85% on time.
- Mornings85% on time · p90 20 min · 690 flights
- Overnights81% on time · p90 25 min · 1,208 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 81% to 86% on time.
- Saturdays86% on time · p90 20 min · 258 flights
- Mondays85% on time · p90 20 min · 295 flights
- Tuesdays83% on time · p90 30 min · 242 flights
- Sundays81% on time · p90 30 min · 289 flights
- Fridays81% on time · p90 25 min · 286 flights
- Wednesdays81% on time · p90 20 min · 269 flights
- Thursdays81% on time · p90 20 min · 294 flights
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