Southwest Airlines is the most reliable airline on the BWI to BUF route with a 74% on-time rate. Based on 6,161 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BWI to BUF
Baltimore to Buffalo — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines74%
BWI to BUF Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 74% | 1.4% | 52m | 6,161 |
Route Overview
74%
Overall On-Time
52m
Avg Delay
1.4%
Cancel Rate
6,161
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.