Historical on-time performance
Baltimore to Salt Lake City
1,865 miData through Dec 2025Source: US DOT · BTS
Flights on BWI–SLC arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 683 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Delta Air LinesOn-time82%Medianon timep9030 minCancel0.3%Flights305
- Southwest AirlinesOn-time76%Medianon timep9040 minCancel0.5%Flights378
Why flights run late
Delay causes
- Airline58%
- Weather2%
- Air traffic (NAS)20%
- Late aircraft20%
- Security1%
Most delay minutes here are attributed to Airline.
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 (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 84% on time.
- Mornings84% on time · p90 20 min · 1,463 flights
- Middays75% on time · p90 35 min · 342 flights
- Afternoons66% on time · p90 60 min · 127 flights · limited
- Evenings64% on time · p90 55 min · 58 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 87% on time.
- Tuesdays87% on time · p90 15 min · 280 flights
- Mondays84% on time · p90 20 min · 284 flights
- Wednesdays82% on time · p90 20 min · 276 flights
- Thursdays81% on time · p90 20 min · 277 flights
- Fridays81% on time · p90 25 min · 277 flights
- Sundays78% on time · p90 45 min · 298 flights
- Saturdays69% on time · p90 55 min · 335 flights
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