Historical on-time performance
Baltimore to Buffalo
281 miData through May 2026Source: US DOT · BTS
Flights on BWI–BUF arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights
based on 1,730 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time74%Medianon timep9040 minCancel1.7%Flights1,730
Why flights run late
Delay causes
- Airline35%
- Weather3%
- Air traffic (NAS)15%
- Late aircraft46%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather90%
- Air traffic (NAS)10%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 29 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 → BUF
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 — 88% on time.
- Mornings88% on time · p90 15 min · 878 flights
- Middays82% on time · p90 25 min · 1,345 flights
- Afternoons70% on time · p90 40 min · 977 flights
- Evenings62% on time · p90 75 min · 886 flights
- Overnights55% on time · p90 65 min · 1,094 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 75% on time.
- Tuesdays75% on time · p90 35 min · 773 flights
- Wednesdays75% on time · p90 30 min · 776 flights
- Thursdays72% on time · p90 40 min · 776 flights
- Fridays71% on time · p90 45 min · 785 flights
- Mondays70% on time · p90 45 min · 779 flights
- Saturdays69% on time · p90 50 min · 594 flights
- Sundays68% on time · p90 45 min · 697 flights
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