Historical on-time performance
Baltimore to Salt Lake City
1,864 miData through May 2026Source: US DOT · BTS
Flights on BWI–SLC arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 686 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time80%Medianon timep9030 minCancel1.0%Flights305
- Southwest AirlinesOn-time72%Medianon timep9045 minCancel1.6%Flights381
Why flights run late
Delay causes
- Airline56%
- Weather2%
- Air traffic (NAS)19%
- Late aircraft23%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline33%
- Weather67%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 9 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BWI → SLC
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 82% on time.
- Mornings82% on time · p90 25 min · 1,541 flights
- Middays75% on time · p90 30 min · 375 flights
- Afternoons68% on time · p90 55 min · 125 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 86% on time.
- Tuesdays86% on time · p90 20 min · 301 flights
- Mondays81% on time · p90 25 min · 308 flights
- Wednesdays80% on time · p90 25 min · 296 flights
- Thursdays80% on time · p90 20 min · 304 flights
- Fridays79% on time · p90 25 min · 305 flights
- Sundays77% on time · p90 40 min · 312 flights
- Saturdays69% on time · p90 50 min · 353 flights
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